diff --git a/app/src/main/java/org/linphone/ui/assistant/viewmodel/AccountLoginViewModel.kt b/app/src/main/java/org/linphone/ui/assistant/viewmodel/AccountLoginViewModel.kt
index 67b93e15b..e46f44142 100644
--- a/app/src/main/java/org/linphone/ui/assistant/viewmodel/AccountLoginViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/assistant/viewmodel/AccountLoginViewModel.kt
@@ -181,6 +181,16 @@ open class AccountLoginViewModel
                 return@postOnCoreThread
             }
 
+            val accounts = core.accountList
+            val found = accounts.find {
+                it.params.identityAddress?.weakEqual(identityAddress) == true
+            }
+            if (found != null) {
+                Log.w("$TAG An account with the same identity address [${identityAddress.asStringUriOnly()}] already exists, do not add it again!")
+                showRedToast(R.string.assistant_account_login_already_connected_error, R.drawable.warning_circle)
+                return@postOnCoreThread
+            }
+
             val user = identityAddress.username
             if (user == null) {
                 Log.e(
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 e1676881f..ac2c57db8 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
@@ -203,6 +203,16 @@ class ThirdPartySipAccountLoginViewModel
                 return@postOnCoreThread
             }
 
+            val accounts = core.accountList
+            val found = accounts.find {
+                it.params.identityAddress?.weakEqual(identityAddress) == true
+            }
+            if (found != null) {
+                Log.w("$TAG An account with the same identity address [${identityAddress.asStringUriOnly()}] already exists, do not add it again!")
+                showRedToast(R.string.assistant_account_login_already_connected_error, R.drawable.warning_circle)
+                return@postOnCoreThread
+            }
+
             newlyCreatedAuthInfo = Factory.instance().createAuthInfo(
                 user,
                 userId,
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 0693326d7..f0724223e 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -106,6 +106,7 @@
     <string name="assistant_login_using_single_sign_on">Single sign on</string>
     <string name="assistant_login_cant_parse_address_toast">Adresse SIP invalide</string>
     <string name="assistant_login_address_without_username_toast">L\'adresse SIP ne contient pas de nom d\'utilisateur !</string>
+    <string name="assistant_account_login_already_connected_error">Le compte est déjà connecté</string>
     <string name="assistant_no_account_yet">Pas encore de compte ?</string>
     <string name="assistant_account_register">Créer un compte</string>
     <string name="assistant_account_creation_sms_confirmation_title">Confirmez votre numéro</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index cfc3398f7..a4087876d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -145,6 +145,7 @@
     <string name="assistant_login_using_single_sign_on">Single sign on</string>
     <string name="assistant_login_cant_parse_address_toast">SIP address is invalid!</string>
     <string name="assistant_login_address_without_username_toast">SIP address doesn\'t contains a username!</string>
+    <string name="assistant_account_login_already_connected_error">Account already exists</string>
     <string name="assistant_no_account_yet">No account yet?</string>
     <string name="assistant_account_register">Register</string>
     <string name="assistant_account_creation_sms_confirmation_title">Confirm your phone number</string>