diff --git a/app/src/main/java/org/linphone/ui/assistant/viewmodel/ThirdPartySipAccountLoginViewModel.kt b/app/src/main/java/org/linphone/ui/assistant/viewmodel/ThirdPartySipAccountLoginViewModel.kt
index d3442b06c..b5813bf6d 100644
--- a/app/src/main/java/org/linphone/ui/assistant/viewmodel/ThirdPartySipAccountLoginViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/assistant/viewmodel/ThirdPartySipAccountLoginViewModel.kt
@@ -47,6 +47,8 @@ class ThirdPartySipAccountLoginViewModel @UiThread constructor() : GenericViewMo
 
     val username = MutableLiveData<String>()
 
+    val authId = MutableLiveData<String>()
+
     val password = MutableLiveData<String>()
 
     val domain = MutableLiveData<String>()
@@ -151,6 +153,7 @@ class ThirdPartySipAccountLoginViewModel @UiThread constructor() : GenericViewMo
             // Allow to enter SIP identity instead of simply username
             // in case identity domain doesn't match proxy domain
             val user = username.value.orEmpty().trim()
+            val userId = authId.value.orEmpty().trim()
             val identity = if (user.startsWith("sip:")) {
                 if (user.contains("@")) {
                     user
@@ -168,7 +171,7 @@ class ThirdPartySipAccountLoginViewModel @UiThread constructor() : GenericViewMo
 
             newlyCreatedAuthInfo = Factory.instance().createAuthInfo(
                 user,
-                null,
+                userId,
                 password.value.orEmpty().trim(),
                 null,
                 null,
diff --git a/app/src/main/res/layout/assistant_third_party_sip_account_login_fragment.xml b/app/src/main/res/layout/assistant_third_party_sip_account_login_fragment.xml
index cccacca15..23929507c 100644
--- a/app/src/main/res/layout/assistant_third_party_sip_account_login_fragment.xml
+++ b/app/src/main/res/layout/assistant_third_party_sip_account_login_fragment.xml
@@ -94,6 +94,38 @@
                 app:layout_constraintStart_toStartOf="parent"
                 app:layout_constraintEnd_toEndOf="parent"/>
 
+            <androidx.appcompat.widget.AppCompatTextView
+                android:id="@+id/authentication_id_label"
+                style="@style/header_style"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:layout_marginStart="16dp"
+                android:layout_marginEnd="16dp"
+                android:text="@string/authentication_id"
+                app:layout_constraintTop_toBottomOf="@id/username"
+                app:layout_constraintStart_toStartOf="@id/authentication_id"/>
+
+            <androidx.appcompat.widget.AppCompatEditText
+                style="@style/default_text_style"
+                android:id="@+id/authentication_id"
+                android:layout_width="0dp"
+                android:layout_height="50dp"
+                android:layout_marginStart="16dp"
+                android:layout_marginEnd="16dp"
+                android:paddingStart="20dp"
+                android:paddingEnd="20dp"
+                android:text="@={viewModel.authId}"
+                android:textSize="14sp"
+                android:textColor="?attr/color_main2_600"
+                android:background="@drawable/edit_text_background"
+                android:inputType="text"
+                android:hint="@string/authentication_id"
+                app:layout_constraintWidth_max="@dimen/text_input_max_width"
+                app:layout_constraintTop_toBottomOf="@id/authentication_id_label"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"/>
+
             <androidx.appcompat.widget.AppCompatTextView
                 android:id="@+id/password_label"
                 style="@style/header_style"
@@ -103,7 +135,7 @@
                 android:layout_marginEnd="16dp"
                 android:layout_marginTop="16dp"
                 android:text="@string/password"
-                app:layout_constraintTop_toBottomOf="@id/username"
+                app:layout_constraintTop_toBottomOf="@id/authentication_id"
                 app:layout_constraintStart_toStartOf="@id/password"/>
 
             <androidx.appcompat.widget.AppCompatEditText
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 7fb0f548a..5250c2bb1 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -11,6 +11,7 @@
     <string name="sip_address_display_name">Nom d\'affichage</string>
     <string name="sip_address_domain">Domaine</string>
     <string name="username">Nom d\'utilisateur</string>
+    <string name="authentication_id">Identifiant de connexion (si différent)</string>
     <string name="password">Mot de passe</string>
     <string name="phone_number">Numéro de téléphone</string>
     <string name="or">ou</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 48ed77db0..6b6bcb588 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -47,6 +47,7 @@
     <string name="sip_address_display_name">Display name</string>
     <string name="sip_address_domain">Domain</string>
     <string name="username">Username</string>
+    <string name="authentication_id">Authentication ID (if different)</string>
     <string name="password">Password</string>
     <string name="phone_number">Phone number</string>
     <string name="or">or</string>