diff --git a/app/src/main/java/org/linphone/activities/assistant/fragments/CountryPickerFragment.kt b/app/src/main/java/org/linphone/activities/assistant/fragments/CountryPickerFragment.kt
index 9f7f10024..2e3d4dc72 100644
--- a/app/src/main/java/org/linphone/activities/assistant/fragments/CountryPickerFragment.kt
+++ b/app/src/main/java/org/linphone/activities/assistant/fragments/CountryPickerFragment.kt
@@ -29,7 +29,7 @@ import org.linphone.activities.assistant.adapters.CountryPickerAdapter
 import org.linphone.core.DialPlan
 import org.linphone.databinding.AssistantCountryPickerFragmentBinding
 
-class CountryPickerFragment() : DialogFragment() {
+class CountryPickerFragment : DialogFragment() {
     private var _binding: AssistantCountryPickerFragmentBinding? = null
     private val binding get() = _binding!!
     private lateinit var adapter: CountryPickerAdapter
diff --git a/app/src/main/java/org/linphone/activities/assistant/fragments/PhoneAccountValidationFragment.kt b/app/src/main/java/org/linphone/activities/assistant/fragments/PhoneAccountValidationFragment.kt
index 28732a224..edcf18210 100644
--- a/app/src/main/java/org/linphone/activities/assistant/fragments/PhoneAccountValidationFragment.kt
+++ b/app/src/main/java/org/linphone/activities/assistant/fragments/PhoneAccountValidationFragment.kt
@@ -34,6 +34,7 @@ import org.linphone.activities.assistant.viewmodels.PhoneAccountValidationViewMo
 import org.linphone.activities.assistant.viewmodels.SharedAssistantViewModel
 import org.linphone.activities.navigateToAccountSettings
 import org.linphone.activities.navigateToEchoCancellerCalibration
+import org.linphone.compatibility.Compatibility
 import org.linphone.core.tools.Log
 import org.linphone.databinding.AssistantPhoneAccountValidationFragmentBinding
 
@@ -113,7 +114,7 @@ class PhoneAccountValidationFragment : GenericFragment<AssistantPhoneAccountVali
                         "[Assistant] [Phone Account Validation] Found 4 digits as primary clip in clipboard, using it and clear it"
                     )
                     viewModel.code.value = clip
-                    clipboard.clearPrimaryClip()
+                    Compatibility.clearClipboard(clipboard)
                 }
             }
         }
diff --git a/app/src/main/java/org/linphone/activities/assistant/viewmodels/AbstractPhoneViewModel.kt b/app/src/main/java/org/linphone/activities/assistant/viewmodels/AbstractPhoneViewModel.kt
index aa7dd4a75..f17515b04 100644
--- a/app/src/main/java/org/linphone/activities/assistant/viewmodels/AbstractPhoneViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/assistant/viewmodels/AbstractPhoneViewModel.kt
@@ -21,7 +21,6 @@
 package org.linphone.activities.assistant.viewmodels
 
 import androidx.lifecycle.MutableLiveData
-import kotlinx.coroutines.*
 import org.linphone.activities.assistant.fragments.CountryPickerFragment
 import org.linphone.core.AccountCreator
 import org.linphone.core.DialPlan
diff --git a/app/src/main/java/org/linphone/activities/main/chat/data/ChatMessageContentData.kt b/app/src/main/java/org/linphone/activities/main/chat/data/ChatMessageContentData.kt
index 2ef13258b..eb028b38a 100644
--- a/app/src/main/java/org/linphone/activities/main/chat/data/ChatMessageContentData.kt
+++ b/app/src/main/java/org/linphone/activities/main/chat/data/ChatMessageContentData.kt
@@ -83,7 +83,6 @@ class ChatMessageContentData(
     val conferenceDate = MutableLiveData<String>()
     val conferenceTime = MutableLiveData<String>()
     val conferenceDuration = MutableLiveData<String>()
-    var conferenceAddress = MutableLiveData<String>()
     val showDuration = MutableLiveData<Boolean>()
 
     val isAlone: Boolean
@@ -107,6 +106,8 @@ class ChatMessageContentData(
         stopVoiceRecording()
     }
 
+    private var conferenceAddress: String? = null
+
     private fun getContent(): Content {
         return chatMessage.contents[contentIndex]
     }
@@ -342,9 +343,9 @@ class ChatMessageContentData(
         val conferenceInfo = Factory.instance().createConferenceInfoFromIcalendarContent(content)
         val conferenceUri = conferenceInfo?.uri?.asStringUriOnly()
         if (conferenceInfo != null && conferenceUri != null) {
-            conferenceAddress.value = conferenceUri!!
+            conferenceAddress = conferenceUri!!
             Log.i(
-                "[Content] Created conference info from ICS with address ${conferenceAddress.value}"
+                "[Content] Created conference info from ICS with address $conferenceAddress"
             )
             conferenceSubject.value = conferenceInfo.subject
             conferenceDescription.value = conferenceInfo.description
@@ -407,7 +408,7 @@ class ChatMessageContentData(
     }
 
     fun callConferenceAddress() {
-        val address = conferenceAddress.value
+        val address = conferenceAddress
         if (address == null) {
             Log.e("[Content] Can't call null conference address!")
             return
diff --git a/app/src/main/java/org/linphone/activities/main/chat/fragments/DetailChatRoomFragment.kt b/app/src/main/java/org/linphone/activities/main/chat/fragments/DetailChatRoomFragment.kt
index 45e0d1b02..060dc4413 100644
--- a/app/src/main/java/org/linphone/activities/main/chat/fragments/DetailChatRoomFragment.kt
+++ b/app/src/main/java/org/linphone/activities/main/chat/fragments/DetailChatRoomFragment.kt
@@ -469,7 +469,7 @@ class DetailChatRoomFragment : MasterFragment<ChatRoomDetailFragmentBinding, Cha
                 } else {
                     if (path.isEmpty()) {
                         val name = content.name
-                        if (name != null && name.isNotEmpty()) {
+                        if (!name.isNullOrEmpty()) {
                             val file = FileUtils.getFileStoragePath(name)
                             FileUtils.writeIntoFile(content.buffer, file)
                             path = file.absolutePath
@@ -834,7 +834,7 @@ class DetailChatRoomFragment : MasterFragment<ChatRoomDetailFragmentBinding, Cha
             if (_adapter != null) {
                 try {
                     adapter.registerAdapterDataObserver(observer)
-                } catch (ise: IllegalStateException) {}
+                } catch (_: IllegalStateException) {}
             }
 
             // Wait for items to be displayed
@@ -859,7 +859,7 @@ class DetailChatRoomFragment : MasterFragment<ChatRoomDetailFragmentBinding, Cha
         if (_adapter != null) {
             try {
                 adapter.unregisterAdapterDataObserver(observer)
-            } catch (ise: IllegalStateException) {}
+            } catch (_: IllegalStateException) {}
         }
 
         // Conversation isn't visible anymore, any new message received in it will trigger a notification
diff --git a/app/src/main/java/org/linphone/activities/main/dialer/viewmodels/DialerViewModel.kt b/app/src/main/java/org/linphone/activities/main/dialer/viewmodels/DialerViewModel.kt
index 4f3997043..b931023d3 100644
--- a/app/src/main/java/org/linphone/activities/main/dialer/viewmodels/DialerViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/dialer/viewmodels/DialerViewModel.kt
@@ -134,7 +134,7 @@ class DialerViewModel : LogsUploadViewModel() {
         ) {
             if (result == VersionUpdateCheckResult.NewVersionAvailable) {
                 Log.i("[Dialer] Update available, version [$version], url [$url]")
-                if (url != null && url.isNotEmpty()) {
+                if (!url.isNullOrEmpty()) {
                     updateAvailableEvent.value = Event(url)
                 }
             }
diff --git a/app/src/main/java/org/linphone/activities/main/files/viewmodels/AudioFileViewModel.kt b/app/src/main/java/org/linphone/activities/main/files/viewmodels/AudioFileViewModel.kt
index a196bd76e..33e83b7d9 100644
--- a/app/src/main/java/org/linphone/activities/main/files/viewmodels/AudioFileViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/files/viewmodels/AudioFileViewModel.kt
@@ -72,7 +72,7 @@ class AudioFileViewModel(content: Content) : FileViewerViewModel(content), Media
     override fun getCurrentPosition(): Int {
         try {
             return mediaPlayer.currentPosition
-        } catch (ise: IllegalStateException) {}
+        } catch (_: IllegalStateException) {}
         return 0
     }
 
diff --git a/app/src/main/java/org/linphone/activities/main/fragments/SecureFragment.kt b/app/src/main/java/org/linphone/activities/main/fragments/SecureFragment.kt
index bb84d2359..7cc660755 100644
--- a/app/src/main/java/org/linphone/activities/main/fragments/SecureFragment.kt
+++ b/app/src/main/java/org/linphone/activities/main/fragments/SecureFragment.kt
@@ -50,7 +50,7 @@ abstract class SecureFragment<T : ViewDataBinding> : GenericFragment<T>() {
 
     override fun onResume() {
         if (isSecure) {
-            enableSecureMode(isSecure)
+            enableSecureMode(true)
         } else {
             // This is a workaround to prevent a small blink showing the previous secured screen
             lifecycleScope.launch {
diff --git a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/AccountSettingsViewModel.kt b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/AccountSettingsViewModel.kt
index ca4d3904d..edbdffe06 100644
--- a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/AccountSettingsViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/AccountSettingsViewModel.kt
@@ -289,7 +289,7 @@ class AccountSettingsViewModel(val account: Account) : GenericSettingsViewModel(
                 account.params = params
                 transportIndex.value = account.params.transport.toInt()
             } else {
-                Log.e("[Account Settings] Couldn't parse address: $address")
+                Log.e("[Account Settings] Couldn't parse address: $newValue")
             }
         }
     }
diff --git a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/AudioSettingsViewModel.kt b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/AudioSettingsViewModel.kt
index 192106b83..9e7bc11ce 100644
--- a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/AudioSettingsViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/AudioSettingsViewModel.kt
@@ -141,7 +141,7 @@ class AudioSettingsViewModel : GenericSettingsViewModel() {
         override fun onTextValueChanged(newValue: String) {
             try {
                 core.micGainDb = newValue.toFloat()
-            } catch (nfe: NumberFormatException) {
+            } catch (_: NumberFormatException) {
             }
         }
     }
@@ -151,7 +151,7 @@ class AudioSettingsViewModel : GenericSettingsViewModel() {
         override fun onTextValueChanged(newValue: String) {
             try {
                 core.playbackGainDb = newValue.toFloat()
-            } catch (nfe: NumberFormatException) {
+            } catch (_: NumberFormatException) {
             }
         }
     }
diff --git a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/CallSettingsViewModel.kt b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/CallSettingsViewModel.kt
index 42eab7990..45fb318f1 100644
--- a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/CallSettingsViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/CallSettingsViewModel.kt
@@ -97,7 +97,7 @@ class CallSettingsViewModel : GenericSettingsViewModel() {
                     Log.w("[Call Settings] Disabling Telecom Manager auto-enable")
                     prefs.manuallyDisabledTelecomManager = true
                 }
-                prefs.useTelecomManager = newValue
+                prefs.useTelecomManager = false
             }
         }
     }
@@ -169,7 +169,7 @@ class CallSettingsViewModel : GenericSettingsViewModel() {
         override fun onTextValueChanged(newValue: String) {
             try {
                 prefs.autoAnswerDelay = newValue.toInt()
-            } catch (nfe: NumberFormatException) {
+            } catch (_: NumberFormatException) {
             }
         }
     }
@@ -179,7 +179,7 @@ class CallSettingsViewModel : GenericSettingsViewModel() {
         override fun onTextValueChanged(newValue: String) {
             try {
                 core.incTimeout = newValue.toInt()
-            } catch (nfe: NumberFormatException) {
+            } catch (_: NumberFormatException) {
             }
         }
     }
diff --git a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/ChatSettingsViewModel.kt b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/ChatSettingsViewModel.kt
index e7a563ad0..d926b7b45 100644
--- a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/ChatSettingsViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/ChatSettingsViewModel.kt
@@ -61,7 +61,7 @@ class ChatSettingsViewModel : GenericSettingsViewModel() {
                 val maxSize = newValue.toInt()
                 core.maxSizeForAutoDownloadIncomingFiles = maxSize
                 updateAutoDownloadIndexFromMaxSize(maxSize)
-            } catch (nfe: NumberFormatException) {
+            } catch (_: NumberFormatException) {
             }
         }
     }
diff --git a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/ContactsSettingsViewModel.kt b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/ContactsSettingsViewModel.kt
index 0806ab461..68847e3fb 100644
--- a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/ContactsSettingsViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/ContactsSettingsViewModel.kt
@@ -77,12 +77,12 @@ class ContactsSettingsViewModel : GenericSettingsViewModel() {
         override fun onBoolValueChanged(newValue: Boolean) {
             if (newValue) {
                 if (PermissionHelper.get().hasWriteContactsPermission()) {
-                    prefs.storePresenceInNativeContact = newValue
+                    prefs.storePresenceInNativeContact = true
                 } else {
                     askWriteContactsPermissionForPresenceStorageEvent.value = Event(true)
                 }
             } else {
-                prefs.storePresenceInNativeContact = newValue
+                prefs.storePresenceInNativeContact = false
             }
         }
     }
diff --git a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/NetworkSettingsViewModel.kt b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/NetworkSettingsViewModel.kt
index c282b006e..057997971 100644
--- a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/NetworkSettingsViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/NetworkSettingsViewModel.kt
@@ -52,7 +52,7 @@ class NetworkSettingsViewModel : GenericSettingsViewModel() {
             try {
                 val port = newValue.toInt()
                 setTransportPort(port)
-            } catch (nfe: NumberFormatException) {
+            } catch (_: NumberFormatException) {
             }
         }
     }
diff --git a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/TunnelSettingsViewModel.kt b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/TunnelSettingsViewModel.kt
index 3822fe5fa..8bdcf2110 100644
--- a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/TunnelSettingsViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/TunnelSettingsViewModel.kt
@@ -43,7 +43,7 @@ class TunnelSettingsViewModel : GenericSettingsViewModel() {
                 val config = getTunnelConfig()
                 config.port = newValue.toInt()
                 updateTunnelConfig(config)
-            } catch (nfe: NumberFormatException) {
+            } catch (_: NumberFormatException) {
             }
         }
     }
@@ -72,7 +72,7 @@ class TunnelSettingsViewModel : GenericSettingsViewModel() {
                 val config = getTunnelConfig()
                 config.port2 = newValue.toInt()
                 updateTunnelConfig(config)
-            } catch (nfe: NumberFormatException) {
+            } catch (_: NumberFormatException) {
             }
         }
     }
diff --git a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/VideoSettingsViewModel.kt b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/VideoSettingsViewModel.kt
index 68278a2da..21ca33c22 100644
--- a/app/src/main/java/org/linphone/activities/main/settings/viewmodels/VideoSettingsViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/settings/viewmodels/VideoSettingsViewModel.kt
@@ -106,7 +106,7 @@ class VideoSettingsViewModel : GenericSettingsViewModel() {
             try {
                 core.downloadBandwidth = newValue.toInt()
                 core.uploadBandwidth = newValue.toInt()
-            } catch (nfe: NumberFormatException) {
+            } catch (_: NumberFormatException) {
             }
         }
     }
diff --git a/app/src/main/java/org/linphone/activities/main/viewmodels/ListTopBarViewModel.kt b/app/src/main/java/org/linphone/activities/main/viewmodels/ListTopBarViewModel.kt
index c8980f75d..0c0ffc090 100644
--- a/app/src/main/java/org/linphone/activities/main/viewmodels/ListTopBarViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/viewmodels/ListTopBarViewModel.kt
@@ -63,7 +63,7 @@ class ListTopBarViewModel : ViewModel() {
         val list = arrayListOf<Int>()
 
         selectedItems.value = list
-        isSelectionNotEmpty.value = list.isNotEmpty()
+        isSelectionNotEmpty.value = false
     }
 
     fun onToggleSelect(position: Int) {
diff --git a/app/src/main/java/org/linphone/activities/voip/viewmodels/ControlsViewModel.kt b/app/src/main/java/org/linphone/activities/voip/viewmodels/ControlsViewModel.kt
index 13b0f999c..f3d1cc9fd 100644
--- a/app/src/main/java/org/linphone/activities/voip/viewmodels/ControlsViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/voip/viewmodels/ControlsViewModel.kt
@@ -536,7 +536,7 @@ class ControlsViewModel : ViewModel() {
 
         isVideoEnabled.value = enabled
         showTakeSnapshotButton.value = enabled && corePreferences.showScreenshotButton
-        var isVideoBeingSent = if (coreContext.core.currentCall?.conference != null) {
+        val isVideoBeingSent = if (coreContext.core.currentCall?.conference != null) {
             val videoDirection = coreContext.core.currentCall?.currentParams?.videoDirection
             videoDirection == MediaDirection.SendRecv || videoDirection == MediaDirection.SendOnly
         } else {
diff --git a/app/src/main/java/org/linphone/compatibility/Api28Compatibility.kt b/app/src/main/java/org/linphone/compatibility/Api28Compatibility.kt
new file mode 100644
index 000000000..cccd52d54
--- /dev/null
+++ b/app/src/main/java/org/linphone/compatibility/Api28Compatibility.kt
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2010-2023 Belledonne Communications SARL.
+ *
+ * This file is part of linphone-android
+ * (see https://www.linphone.org).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.linphone.compatibility
+
+import android.annotation.TargetApi
+import android.content.ClipboardManager
+
+@TargetApi(28)
+class Api28Compatibility {
+    companion object {
+        fun clearClipboard(clipboard: ClipboardManager) {
+            clipboard.clearPrimaryClip()
+        }
+    }
+}
diff --git a/app/src/main/java/org/linphone/compatibility/Compatibility.kt b/app/src/main/java/org/linphone/compatibility/Compatibility.kt
index 846f0af4a..e7d940694 100644
--- a/app/src/main/java/org/linphone/compatibility/Compatibility.kt
+++ b/app/src/main/java/org/linphone/compatibility/Compatibility.kt
@@ -23,6 +23,7 @@ import android.app.Activity
 import android.app.Notification
 import android.app.PendingIntent
 import android.app.Service
+import android.content.ClipboardManager
 import android.content.Context
 import android.content.Intent
 import android.graphics.Bitmap
@@ -455,5 +456,11 @@ class Compatibility {
             }
             return false
         }
+
+        fun clearClipboard(clipboard: ClipboardManager) {
+            if (Version.sdkAboveOrEqual(Version.API28_PIE_90)) {
+                Api28Compatibility.clearClipboard(clipboard)
+            }
+        }
     }
 }
diff --git a/app/src/main/java/org/linphone/contact/ContactDataInterface.kt b/app/src/main/java/org/linphone/contact/ContactDataInterface.kt
index fe4e1ac1b..2d346e305 100644
--- a/app/src/main/java/org/linphone/contact/ContactDataInterface.kt
+++ b/app/src/main/java/org/linphone/contact/ContactDataInterface.kt
@@ -88,7 +88,7 @@ abstract class GenericContactViewModel(private val sipAddress: Address) : Messag
         contactLookup()
     }
 
-    protected fun contactLookup() {
+    private fun contactLookup() {
         displayName.value = LinphoneUtils.getDisplayName(sipAddress)
         val friend = coreContext.contactsManager.findContactByAddress(sipAddress)
         if (friend != null) {
diff --git a/app/src/main/java/org/linphone/contact/ContactsManager.kt b/app/src/main/java/org/linphone/contact/ContactsManager.kt
index ec6be7aea..ecb27618c 100644
--- a/app/src/main/java/org/linphone/contact/ContactsManager.kt
+++ b/app/src/main/java/org/linphone/contact/ContactsManager.kt
@@ -410,10 +410,12 @@ fun Friend.getPictureUri(thumbnailPreferred: Boolean = false): Uri? {
                 // Check that the URI points to a real file
                 val contentResolver = coreContext.context.contentResolver
                 try {
-                    if (contentResolver.openAssetFileDescriptor(pictureUri, "r") != null) {
+                    val fd = contentResolver.openAssetFileDescriptor(pictureUri, "r")
+                    if (fd != null) {
+                        fd.close()
                         return pictureUri
                     }
-                } catch (ioe: IOException) { }
+                } catch (_: IOException) { }
             }
 
             // Fallback to thumbnail if high res picture isn't available
@@ -421,11 +423,11 @@ fun Friend.getPictureUri(thumbnailPreferred: Boolean = false): Uri? {
                 lookupUri,
                 ContactsContract.Contacts.Photo.CONTENT_DIRECTORY
             )
-        } catch (e: Exception) { }
+        } catch (_: Exception) { }
     } else if (photo != null) {
         try {
             return Uri.parse(photo)
-        } catch (e: Exception) { }
+        } catch (_: Exception) { }
     }
     return null
 }
diff --git a/app/src/main/java/org/linphone/utils/DataBindingUtils.kt b/app/src/main/java/org/linphone/utils/DataBindingUtils.kt
index 46d499e77..74a58cdd0 100644
--- a/app/src/main/java/org/linphone/utils/DataBindingUtils.kt
+++ b/app/src/main/java/org/linphone/utils/DataBindingUtils.kt
@@ -598,7 +598,7 @@ fun addPrefixEditTextValidation(editText: EditText, enabled: Boolean) {
 
         @SuppressLint("SetTextI18n")
         override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
-            if (s == null || s.isEmpty() || !s.startsWith("+")) {
+            if (s.isNullOrEmpty() || !s.startsWith("+")) {
                 editText.setText("+$s")
             }
         }
diff --git a/app/src/main/java/org/linphone/utils/LinphoneUtils.kt b/app/src/main/java/org/linphone/utils/LinphoneUtils.kt
index 1d4f47857..47c095644 100644
--- a/app/src/main/java/org/linphone/utils/LinphoneUtils.kt
+++ b/app/src/main/java/org/linphone/utils/LinphoneUtils.kt
@@ -51,7 +51,7 @@ class LinphoneUtils {
                 }
                 val localDisplayName = account?.params?.identityAddress?.displayName
                 // Do not return an empty local display name
-                if (localDisplayName != null && localDisplayName.isNotEmpty()) {
+                if (!localDisplayName.isNullOrEmpty()) {
                     return localDisplayName
                 }
             }
@@ -179,7 +179,7 @@ class LinphoneUtils {
         fun deleteFilesAttachedToChatMessage(chatMessage: ChatMessage) {
             for (content in chatMessage.contents) {
                 val filePath = content.filePath
-                if (filePath != null && filePath.isNotEmpty()) {
+                if (!filePath.isNullOrEmpty()) {
                     Log.i("[Linphone Utils] Deleting file $filePath")
                     FileUtils.deleteFile(filePath)
                 }
diff --git a/app/src/main/res/layout/assistant_country_picker_cell.xml b/app/src/main/res/layout/assistant_country_picker_cell.xml
index 27a648efd..ccc3d74d9 100644
--- a/app/src/main/res/layout/assistant_country_picker_cell.xml
+++ b/app/src/main/res/layout/assistant_country_picker_cell.xml
@@ -4,8 +4,7 @@
     android:layout_height="40dp"
     android:layout_gravity="center"
     android:orientation="horizontal"
-    android:padding="5dp"
-    android:background="?attr/backgroundColor">
+    android:padding="5dp">
 
     <TextView
         android:id="@+id/country_name"
diff --git a/app/src/main/res/layout/chat_message_attachment_cell.xml b/app/src/main/res/layout/chat_message_attachment_cell.xml
index e56fd6740..9482eea7a 100644
--- a/app/src/main/res/layout/chat_message_attachment_cell.xml
+++ b/app/src/main/res/layout/chat_message_attachment_cell.xml
@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
-<layout xmlns:android="http://schemas.android.com/apk/res/android">
+<layout xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:android="http://schemas.android.com/apk/res/android">
 
     <data>
         <import type="android.view.View"/>
@@ -46,8 +48,8 @@
             android:gravity="center"
             android:textAlignment="center"
             android:drawablePadding="5dp"
-            android:drawableTop="@drawable/file_video"
-            android:text="@{data.fileName, default=`test.mkv`}"/>
+            android:text="@{data.fileName, default=`test.mkv`}"
+            app:drawableTopCompat="@drawable/file_video" />
 
         <ImageView
             android:visibility="@{data.video ? View.VISIBLE : View.GONE, default=gone}"
@@ -73,9 +75,10 @@
             android:gravity="center"
             android:textAlignment="center"
             android:drawablePadding="5dp"
-            android:drawableTop="@{data.pdf ? @drawable/file_pdf : (data.audio ? @drawable/file_audio : @drawable/file), default=@drawable/file}"
             android:visibility="@{data.image || data.video ? View.GONE : View.VISIBLE, default=gone}"
-            android:text="@{data.fileName, default=`test.txt`}"/>
+            android:text="@{data.fileName, default=`test.txt`}"
+            android:drawableTop="@{data.pdf ? @drawable/file_pdf : (data.audio ? @drawable/file_audio : @drawable/file), default=@drawable/file}"
+            tools:ignore="UseCompatTextViewDrawableXml" />
 
         <ImageView
             android:onClick="@{() -> data.delete()}"
diff --git a/app/src/main/res/layout/chat_message_downloadable_file_content_cell.xml b/app/src/main/res/layout/chat_message_downloadable_file_content_cell.xml
index a27282c62..75d3b3fac 100644
--- a/app/src/main/res/layout/chat_message_downloadable_file_content_cell.xml
+++ b/app/src/main/res/layout/chat_message_downloadable_file_content_cell.xml
@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
-<layout xmlns:android="http://schemas.android.com/apk/res/android">
+<layout xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:android="http://schemas.android.com/apk/res/android">
 
     <data>
         <import type="android.view.View" />
@@ -29,7 +31,6 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_margin="5dp"
-            android:drawableTop="@{data.video ? @drawable/file_video : (data.image ? @drawable/file_picture : (data.pdf ? @drawable/file_pdf : (data.audio ? @drawable/file_audio : (data.voiceRecording ? @drawable/audio_recording_reply_preview_default : @drawable/file)))), default=@drawable/file}"
             android:drawablePadding="5dp"
             android:ellipsize="middle"
             android:gravity="center"
@@ -37,7 +38,9 @@
             android:onLongClick="@{longClickListener}"
             android:singleLine="true"
             android:text="@{data.fileName, default=`test.pdf`}"
-            android:textAlignment="center" />
+            android:textAlignment="center"
+            android:drawableTop="@{data.video ? @drawable/file_video : (data.image ? @drawable/file_picture : (data.pdf ? @drawable/file_pdf : (data.audio ? @drawable/file_audio : (data.voiceRecording ? @drawable/audio_recording_reply_preview_default : @drawable/file)))), default=@drawable/file}"
+            tools:ignore="UseCompatTextViewDrawableXml" />
 
         <TextView
             style="@style/chat_file_attachment_font"
diff --git a/app/src/main/res/layout/chat_message_generic_file_content_cell.xml b/app/src/main/res/layout/chat_message_generic_file_content_cell.xml
index 40cc8f018..e52d2d9e6 100644
--- a/app/src/main/res/layout/chat_message_generic_file_content_cell.xml
+++ b/app/src/main/res/layout/chat_message_generic_file_content_cell.xml
@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
-<layout xmlns:android="http://schemas.android.com/apk/res/android">
+<layout xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:android="http://schemas.android.com/apk/res/android">
 
     <data>
         <import type="android.view.View" />
@@ -29,7 +31,6 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_margin="5dp"
-            android:drawableTop="@{data.video ? @drawable/file_video : (data.image ? @drawable/file_picture : (data.pdf ? @drawable/file_pdf : (data.audio ? @drawable/file_audio : (data.voiceRecording ? @drawable/audio_recording_reply_preview_default : @drawable/file)))), default=@drawable/file}"
             android:drawablePadding="5dp"
             android:ellipsize="middle"
             android:gravity="center"
@@ -37,7 +38,9 @@
             android:onLongClick="@{longClickListener}"
             android:singleLine="true"
             android:text="@{data.fileName, default=`test.pdf`}"
-            android:textAlignment="center" />
+            android:textAlignment="center"
+            android:drawableTop="@{data.video ? @drawable/file_video : (data.image ? @drawable/file_picture : (data.pdf ? @drawable/file_pdf : (data.audio ? @drawable/file_audio : (data.voiceRecording ? @drawable/audio_recording_reply_preview_default : @drawable/file)))), default=@drawable/file}"
+            tools:ignore="UseCompatTextViewDrawableXml" />
 
     </RelativeLayout>
 
diff --git a/app/src/main/res/layout/chat_message_list_cell.xml b/app/src/main/res/layout/chat_message_list_cell.xml
index 71b7d4b89..1892c571a 100644
--- a/app/src/main/res/layout/chat_message_list_cell.xml
+++ b/app/src/main/res/layout/chat_message_list_cell.xml
@@ -85,7 +85,8 @@
             android:background="@drawable/led_background"
             android:padding="2dp"
             app:presenceIcon="@{data.presenceStatus}"
-            android:visibility="@{data.chatMessage.outgoing || selectionListViewModel.isEditionEnabled || data.hideAvatar || data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}" />
+            android:visibility="@{data.chatMessage.outgoing || selectionListViewModel.isEditionEnabled || data.hideAvatar || data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
+            tools:ignore="ContentDescription" />
 
         <LinearLayout
             android:id="@+id/background"
diff --git a/app/src/main/res/layout/chat_room_creation_fragment.xml b/app/src/main/res/layout/chat_room_creation_fragment.xml
index 7f43d485b..9eb6ac052 100644
--- a/app/src/main/res/layout/chat_room_creation_fragment.xml
+++ b/app/src/main/res/layout/chat_room_creation_fragment.xml
@@ -163,6 +163,7 @@
             android:layout_alignRight="@id/searchBar"
             android:layout_alignBottom="@id/searchBar"
             android:onClick="@{() -> viewModel.clearFilter()}"
+            android:contentDescription="@string/content_description_clear_field"
             android:src="@drawable/field_clean" />
 
         <View
diff --git a/app/src/main/res/layout/chat_room_devices_group_cell.xml b/app/src/main/res/layout/chat_room_devices_group_cell.xml
index 71a80364d..3934d0b58 100644
--- a/app/src/main/res/layout/chat_room_devices_group_cell.xml
+++ b/app/src/main/res/layout/chat_room_devices_group_cell.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <data>
         <import type="android.view.View"/>
@@ -49,7 +50,8 @@
                     android:background="@drawable/led_background"
                     android:padding="@dimen/contact_presence_badge_padding"
                     app:presenceIcon="@{data.presenceStatus}"
-                    android:visibility="@{data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}" />
+                    android:visibility="@{data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
+                    tools:ignore="ContentDescription" />
 
                 <ImageView
                     android:layout_width="20dp"
diff --git a/app/src/main/res/layout/chat_room_group_info_participant_cell.xml b/app/src/main/res/layout/chat_room_group_info_participant_cell.xml
index e41cadccb..6b833ec55 100644
--- a/app/src/main/res/layout/chat_room_group_info_participant_cell.xml
+++ b/app/src/main/res/layout/chat_room_group_info_participant_cell.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <data>
         <import type="android.view.View"/>
@@ -50,7 +51,8 @@
                 android:background="@drawable/led_background"
                 android:padding="@dimen/contact_presence_badge_padding"
                 android:visibility="@{data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
-                app:presenceIcon="@{data.presenceStatus}" />
+                app:presenceIcon="@{data.presenceStatus}"
+                tools:ignore="ContentDescription" />
 
             <ImageView
                 android:layout_width="20dp"
diff --git a/app/src/main/res/layout/chat_room_imdn_participant_cell.xml b/app/src/main/res/layout/chat_room_imdn_participant_cell.xml
index e034f374c..2a69b1b88 100644
--- a/app/src/main/res/layout/chat_room_imdn_participant_cell.xml
+++ b/app/src/main/res/layout/chat_room_imdn_participant_cell.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <data>
         <import type="android.view.View"/>
@@ -37,7 +38,8 @@
             android:background="@drawable/led_background"
             android:padding="@dimen/contact_presence_badge_padding"
             app:presenceIcon="@{data.presenceStatus}"
-            android:visibility="@{data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}" />
+            android:visibility="@{data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
+            tools:ignore="ContentDescription" />
 
         <TextView
             android:id="@+id/time"
diff --git a/app/src/main/res/layout/chat_room_list_cell.xml b/app/src/main/res/layout/chat_room_list_cell.xml
index 1a9928e28..d65cd2572 100644
--- a/app/src/main/res/layout/chat_room_list_cell.xml
+++ b/app/src/main/res/layout/chat_room_list_cell.xml
@@ -62,7 +62,8 @@
             app:presenceIcon="@{data.presenceStatus}"
             android:visibility="@{data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
             app:layout_constraintStart_toStartOf="@id/avatar"
-            app:layout_constraintBottom_toBottomOf="@id/avatar"/>
+            app:layout_constraintBottom_toBottomOf="@id/avatar"
+            tools:ignore="ContentDescription"/>
 
         <ImageView
             android:id="@+id/securityLevel"
diff --git a/app/src/main/res/layout/chat_room_sending.xml b/app/src/main/res/layout/chat_room_sending.xml
index 0d88333c4..72dc5d5b2 100644
--- a/app/src/main/res/layout/chat_room_sending.xml
+++ b/app/src/main/res/layout/chat_room_sending.xml
@@ -205,6 +205,7 @@
             android:paddingTop="@dimen/chat_message_sending_icons_margin"
             android:paddingBottom="@dimen/chat_message_sending_icons_margin"
             android:src="@drawable/emoji"
+            android:contentDescription="@string/content_description_emoji_picker"
             android:selected="@{chatSendingViewModel.isEmojiPickerOpen}"
             android:visibility="@{chatSendingViewModel.isEmojiPickerVisible ? View.VISIBLE : View.GONE}"
             app:layout_constraintHeight_max="@dimen/chat_message_sending_icons_size"
diff --git a/app/src/main/res/layout/conference_scheduling_participants_list_fragment.xml b/app/src/main/res/layout/conference_scheduling_participants_list_fragment.xml
index 6d652b704..888f00baf 100644
--- a/app/src/main/res/layout/conference_scheduling_participants_list_fragment.xml
+++ b/app/src/main/res/layout/conference_scheduling_participants_list_fragment.xml
@@ -79,6 +79,7 @@
                 android:layout_alignRight="@id/searchBar"
                 android:layout_alignBottom="@id/searchBar"
                 android:onClick="@{() -> viewModel.clearFilter()}"
+                android:contentDescription="@string/content_description_clear_field"
                 android:src="@drawable/field_clean" />
 
         </RelativeLayout>
diff --git a/app/src/main/res/layout/conference_scheduling_summary_fragment.xml b/app/src/main/res/layout/conference_scheduling_summary_fragment.xml
index 3a62d3abf..2e6fc3da4 100644
--- a/app/src/main/res/layout/conference_scheduling_summary_fragment.xml
+++ b/app/src/main/res/layout/conference_scheduling_summary_fragment.xml
@@ -102,6 +102,7 @@
                             android:layout_marginTop="5dp"
                             android:layout_marginStart="5dp"
                             android:layout_marginEnd="5dp"
+                            android:inputType="textEmailSubject"
                             style="@style/conference_scheduling_font"
                             android:background="?attr/voipFormDisabledFieldBackgroundColor"
                             android:text="@{viewModel.subject}"
@@ -252,6 +253,7 @@
                                 android:gravity="top"
                                 android:minLines="3"
                                 android:maxLines="5"
+                                android:inputType="textMultiLine"
                                 style="@style/conference_scheduling_font"
                                 android:background="?attr/voipFormDisabledFieldBackgroundColor"
                                 android:hint="@string/conference_schedule_description_hint"
diff --git a/app/src/main/res/layout/contact_detail_fragment.xml b/app/src/main/res/layout/contact_detail_fragment.xml
index 002a24103..fe3f75ee4 100644
--- a/app/src/main/res/layout/contact_detail_fragment.xml
+++ b/app/src/main/res/layout/contact_detail_fragment.xml
@@ -105,7 +105,8 @@
                         android:background="@drawable/led_background"
                         android:padding="@dimen/contact_presence_big_badge_padding"
                         app:presenceIcon="@{viewModel.presenceStatus}"
-                        android:visibility="@{viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}" />
+                        android:visibility="@{viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
+                        tools:ignore="ContentDescription" />
 
                 </RelativeLayout>
 
diff --git a/app/src/main/res/layout/contact_list_cell.xml b/app/src/main/res/layout/contact_list_cell.xml
index 731a4afa5..33cb88757 100644
--- a/app/src/main/res/layout/contact_list_cell.xml
+++ b/app/src/main/res/layout/contact_list_cell.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <data>
         <import type="android.view.View"/>
@@ -54,7 +55,8 @@
             android:background="@drawable/led_background"
             android:padding="@dimen/contact_presence_badge_padding"
             app:presenceIcon="@{viewModel.presenceStatus}"
-            android:visibility="@{viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}" />
+            android:visibility="@{viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
+            tools:ignore="ContentDescription" />
 
         <LinearLayout
             android:id="@+id/right"
diff --git a/app/src/main/res/layout/contact_selection_cell.xml b/app/src/main/res/layout/contact_selection_cell.xml
index bef54f3a6..7b9c69e78 100644
--- a/app/src/main/res/layout/contact_selection_cell.xml
+++ b/app/src/main/res/layout/contact_selection_cell.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <data>
         <import type="android.view.View"/>
@@ -52,7 +53,8 @@
                     android:background="@drawable/led_background"
                     android:padding="@dimen/contact_presence_badge_padding"
                     app:presenceIcon="@{data.presenceStatus}"
-                    android:visibility="@{data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}" />
+                    android:visibility="@{data.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
+                    tools:ignore="ContentDescription" />
 
                 <ImageView
                     android:visibility="@{data.hasLimeX3DHCapability ? View.VISIBLE : View.GONE, default=gone}"
diff --git a/app/src/main/res/layout/empty_fragment.xml b/app/src/main/res/layout/empty_fragment.xml
index 2c5d8a485..d829e291c 100644
--- a/app/src/main/res/layout/empty_fragment.xml
+++ b/app/src/main/res/layout/empty_fragment.xml
@@ -2,7 +2,6 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:background="?attr/backgroundColor">
+    android:layout_height="match_parent">
 
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/history_detail_fragment.xml b/app/src/main/res/layout/history_detail_fragment.xml
index 280854a97..ff74d4bcb 100644
--- a/app/src/main/res/layout/history_detail_fragment.xml
+++ b/app/src/main/res/layout/history_detail_fragment.xml
@@ -107,7 +107,8 @@
                         android:background="@drawable/led_background"
                         android:padding="@dimen/contact_presence_big_badge_padding"
                         app:presenceIcon="@{viewModel.presenceStatus}"
-                        android:visibility="@{viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}" />
+                        android:visibility="@{viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
+                        bind:ignore="ContentDescription" />
 
                 </RelativeLayout>
 
diff --git a/app/src/main/res/layout/history_list_cell.xml b/app/src/main/res/layout/history_list_cell.xml
index d25b0318b..fef2934ac 100644
--- a/app/src/main/res/layout/history_list_cell.xml
+++ b/app/src/main/res/layout/history_list_cell.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <data>
 
@@ -103,7 +104,8 @@
                 android:background="@drawable/led_background"
                 android:padding="@dimen/contact_presence_badge_padding"
                 app:presenceIcon="@{viewModel.presenceStatus}"
-                android:visibility="@{viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}" />
+                android:visibility="@{viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
+                tools:ignore="ContentDescription" />
 
             <ImageView
                 android:id="@+id/icon"
diff --git a/app/src/main/res/layout/recording_list_cell.xml b/app/src/main/res/layout/recording_list_cell.xml
index d0d13a014..26f26cb2b 100644
--- a/app/src/main/res/layout/recording_list_cell.xml
+++ b/app/src/main/res/layout/recording_list_cell.xml
@@ -63,6 +63,7 @@
             android:padding="5dp"
             android:onClick="@{() -> data.export()}"
             android:src="@drawable/icon_share"
+            android:contentDescription="@string/content_description_recording_export"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintTop_toTopOf="parent"
             app:layout_constraintEnd_toStartOf="@id/delete" />
diff --git a/app/src/main/res/layout/side_menu_fragment.xml b/app/src/main/res/layout/side_menu_fragment.xml
index 528031725..ead22be46 100644
--- a/app/src/main/res/layout/side_menu_fragment.xml
+++ b/app/src/main/res/layout/side_menu_fragment.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <data>
         <import type="android.view.View"/>
@@ -81,7 +82,8 @@
                 android:background="@drawable/led_background"
                 android:padding="@dimen/contact_presence_badge_padding"
                 app:presenceIcon="@{viewModel.presenceStatus}"
-                android:visibility="@{!viewModel.defaultAccountFound || viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}" />
+                android:visibility="@{!viewModel.defaultAccountFound || viewModel.presenceStatus == ConsolidatedPresence.Offline ? View.GONE : View.VISIBLE, default=gone}"
+                tools:ignore="ContentDescription" />
 
             <LinearLayout
                 android:layout_width="wrap_content"
diff --git a/app/src/main/res/layout/voip_call_incoming_fragment.xml b/app/src/main/res/layout/voip_call_incoming_fragment.xml
index 1663180ac..d8093d47c 100644
--- a/app/src/main/res/layout/voip_call_incoming_fragment.xml
+++ b/app/src/main/res/layout/voip_call_incoming_fragment.xml
@@ -120,6 +120,7 @@
             android:layout_width="0dp"
             android:layout_height="0dp"
             android:src="@drawable/icon_video_conf_incoming"
+            android:contentDescription="@null"
             app:layout_constraintBottom_toTopOf="@id/participants_count"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintHeight_max="120dp"
diff --git a/app/src/main/res/values-cs/strings.xml b/app/src/main/res/values-cs/strings.xml
index 583bf047e..7c4e37f6d 100644
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@@ -2,7 +2,7 @@
 <!DOCTYPE resources [
 <!ENTITY appName "Linphone">
 ]>
-<resources xmlns:tools="http://schemas.android.com/tools">
+<resources xmlns:tools="http://schemas.android.com/tools" tools:ignore="MissingQuantity">
     <string name="content_description_copy_conference_address">Kopírovat adresu schůzky</string>
     <string name="call_settings_auto_start_title">Okamžité zahájení volání</string>
     <string name="call_settings_auto_start_summary">Volání se spustí automaticky, pokud je spuštěno z jiné aplikace</string>
@@ -107,7 +107,7 @@
     <string name="sip_address">SIP adresa</string>
     <string name="sip_addresses">SIP adresy</string>
     <string name="cancel">Zrušit</string>
-    <plurals name="days">
+    <plurals name="days" tools:ignore="MissingQuantity">
         <item quantity="one">den</item>
         <item quantity="few">dny</item>
         <item quantity="other">dní</item>
@@ -670,7 +670,7 @@
     <string name="chat_room_ephemeral_message_disabled">Zakázáno</string>
     <string name="chat_room_ephemeral_message_one_hour">1 hodina</string>
     <string name="chat_room_ephemeral_message_one_week">1 týden</string>
-    <plurals name="chat_room_remote_composing">
+    <plurals name="chat_room_remote_composing" tools:ignore="MissingQuantity">
         <item quantity="one">%s píše…</item>
         <item quantity="few">%s píší…</item>
         <item quantity="other">%s píše…</item>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 40f6a45c0..0bda6c139 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -788,4 +788,5 @@
     <string name="dialog_authentication_required_title">Authentification requise</string>
     <string name="dialog_authentication_required_message">La connexion a échouée car l\'authentification est manquante ou invalide pour le compte\n%s.\n\nVous pouvez fournir le mot de passe à nouveau ou vérifier la configuration de votre compte dans les paramètres.</string>
     <string name="dialog_authentication_required_change_password_label">Confirmer</string>
+    <string name="content_description_emoji_picker">Change la visibilité du selectionneur d\'emoji</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 1da9bf070..fdb67c706 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -2,7 +2,7 @@
 <!DOCTYPE resources [
 <!ENTITY appName "Linphone">
 ]>
-<resources xmlns:tools="http://schemas.android.com/tools">
+<resources xmlns:tools="http://schemas.android.com/tools" tools:ignore="UnusedQuantity">
     <string name="transport">传输</string>
     <string name="transport_udp">UDP 用户数据报协议</string>
     <string name="transport_tls">TLS安全传输层协议</string>
@@ -351,9 +351,6 @@
     <string name="contact_editor_write_permission_denied">写入联系人权限被拒绝，无法编辑联系人</string>
     <string name="contact_delete_one_dialog">您要删除这个联系人吗？\n它也将会从您的设备通讯录中删除</string>
     <string name="contact_delete_many_dialog">您确定要删除这些联系人吗？\n他们将会从您的设备通讯录中删除</string>
-    <plurals name="history_delete_dialog">
-        <item quantity="other">\@string/history_delete_one_dialog</item>
-    </plurals>
     <string name="contact_new_choose_sync_account">选择保存联系人的位置</string>
     <string name="contact_local_sync_account">本地存储</string>
     <string name="dialer_address_bar_hint">输入电话号码或地址</string>
@@ -503,17 +500,11 @@
     <string name="chat_message_forward_confirmation_dialog">是否要在此聊天室转发信息？</string>
     <string name="chat_room_ephemeral_fragment_title">短暂信息</string>
     <string name="chat_room_creation_failed_snack">群组创建失败</string>
-    <plurals name="chat_room_delete_dialog">
-        <item quantity="other">\@string/chat_room_delete_one_dialog</item>
-    </plurals>
     <string name="call_video_update_requested_dialog">对方要求启用视讯</string>
     <string name="assistant_phone_number_link_info_content">\n如果将您的帐户关联您的电话号码，您的朋友们可以更容易的找到你。\n\n您在通讯录里可以查看谁在使用&appName;，他们也同样可以通过&appName;联系您。\n</string>
     <string name="assistant_login_desc">请输入您的用户名与密码和您的SIP域名</string>
     <string name="assistant_validate_account_1">您的帐户已经创建。请检查邮件以驗證您的帐户：</string>
     <string name="call_stats_video_resolution_received">接收视频分辨率：</string>
-    <plurals name="contact_delete_dialog">
-        <item quantity="other">\@string/contact_delete_one_dialog</item>
-    </plurals>
     <string name="chat_settings_mark_as_read_notif_dismissal_title">撤消通知后标记为已读</string>
     <string name="advanced_settings_send_debug_logs_title">发送日志</string>
     <string name="advanced_settings_reset_debug_logs_title">重启日志</string>
@@ -549,7 +540,7 @@
     <string name="chat_room_sending_message_hint">信息</string>
     <string name="chat_message_voice_recording_hold_to_record">按住按钮录制语音信息</string>
     <string name="chat_message_voice_recording_playback_low_volume">您的媒体音量很低，您可能需要提高音量</string>
-    <plurals name="chat_room_unread_messages_event">
+    <plurals name="chat_room_unread_messages_event" tools:ignore="UnusedQuantity">
         <item quantity="one">%1$d 未读消息</item>
         <item quantity="other">%1$d 未读消息</item>
     </plurals>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index d3492c188..a0366f19d 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -541,7 +541,6 @@
     <string name="content_descripton_scroll_to_bottom">滑動到畫面底部或第一則未讀訊息</string>
     <string name="content_description_copy_conference_address">複製會議地址</string>
     <string name="content_description_toggle_conference_info_details">切換顯示會議詳細資訊</string>
-    <string name="chat_event_ephemeral_enabled">您已開啟「閱後即焚」訊息</string>
     <string name="chat_settings_use_in_app_file_viewer_title">總是在此程式中開啟</string>
     <string name="chat_settings_use_in_app_file_viewer_summary">還是可以匯出到第三方應用程式</string>
     <string name="chat_settings_auto_download_voice_recordings">自動下載收到的錄音檔</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 9637f0a94..4cea5f544 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -920,4 +920,5 @@
     <string name="content_description_presence_online">User is online</string>
     <string name="content_description_presence_offline">User is offline</string>
     <string name="content_description_presence_do_not_disturb">User is asking not to be disturbed</string>
+    <string name="content_description_emoji_picker">Toggle emoji picker visibility</string>
 </resources>
diff --git a/app/src/main/res/xml/locales_config.xml b/app/src/main/res/xml/locales_config.xml
index 01b6e9ff2..7f67f3994 100644
--- a/app/src/main/res/xml/locales_config.xml
+++ b/app/src/main/res/xml/locales_config.xml
@@ -11,6 +11,7 @@
     <locale android:name="he"/>
     <locale android:name="hu"/>
     <locale android:name="it"/>
+    <locale android:name="ja"/>
     <locale android:name="ka"/>
     <locale android:name="nl"/>
     <locale android:name="pt"/>