diff --git a/app/src/main/java/com/nextcloud/talk/jobs/ContactAddressBookWorker.kt b/app/src/main/java/com/nextcloud/talk/jobs/ContactAddressBookWorker.kt
index b05258c45..c55949eec 100644
--- a/app/src/main/java/com/nextcloud/talk/jobs/ContactAddressBookWorker.kt
+++ b/app/src/main/java/com/nextcloud/talk/jobs/ContactAddressBookWorker.kt
@@ -32,6 +32,7 @@ import android.net.Uri
 import android.os.RemoteException
 import android.provider.ContactsContract
 import android.util.Log
+import android.widget.Toast
 import androidx.core.content.ContextCompat
 import androidx.core.os.ConfigurationCompat
 import androidx.work.Data
@@ -143,9 +144,22 @@ class ContactAddressBookWorker(val context: Context, workerParameters: WorkerPar
                     }
 
                     override fun onNext(foundContacts: ContactsByNumberOverall) {
-                        val contactsWithAssociatedPhoneNumbers = foundContacts.ocs!!.map
-                        deleteLinkedAccounts(contactsWithAssociatedPhoneNumbers)
-                        createLinkedAccounts(contactsWithAssociatedPhoneNumbers)
+                        when (foundContacts.ocs?.meta?.statusCode) {
+                            HTTP_CODE_TOO_MANY_REQUESTS -> {
+                                Toast.makeText(
+                                    context,
+                                    context.resources.getString(
+                                        R.string.nc_settings_phone_book_integration_phone_number_dialog_429
+                                    ),
+                                    Toast.LENGTH_SHORT
+                                ).show()
+                            }
+                            else -> {
+                                val contactsWithAssociatedPhoneNumbers = foundContacts.ocs!!.map
+                                deleteLinkedAccounts(contactsWithAssociatedPhoneNumbers)
+                                createLinkedAccounts(contactsWithAssociatedPhoneNumbers)
+                            }
+                        }
                     }
 
                     override fun onError(e: Throwable) {
@@ -449,6 +463,7 @@ class ContactAddressBookWorker(val context: Context, workerParameters: WorkerPar
         const val REQUEST_PERMISSION = 231
         const val KEY_FORCE = "KEY_FORCE"
         const val DELETE_ALL = "DELETE_ALL"
+        private const val HTTP_CODE_TOO_MANY_REQUESTS: Int = 429
 
         fun run(context: Context) {
             if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_CONTACTS) ==
diff --git a/app/src/main/java/com/nextcloud/talk/settings/SettingsActivity.kt b/app/src/main/java/com/nextcloud/talk/settings/SettingsActivity.kt
index acf24792b..f6cff3197 100644
--- a/app/src/main/java/com/nextcloud/talk/settings/SettingsActivity.kt
+++ b/app/src/main/java/com/nextcloud/talk/settings/SettingsActivity.kt
@@ -1079,21 +1079,23 @@ class SettingsActivity : BaseActivity() {
                 }
 
                 override fun onNext(genericOverall: GenericOverall) {
-                    val statusCode = genericOverall.ocs?.meta?.statusCode
-                    if (statusCode == HTTP_CODE) {
-                        dialog.dismiss()
-                        Snackbar.make(
-                            binding.root,
-                            context.resources.getString(
-                                R.string.nc_settings_phone_book_integration_phone_number_dialog_success
-                            ),
-                            Snackbar.LENGTH_LONG
-                        ).show()
-                    } else {
-                        textInputLayout.helperText = context.resources.getString(
-                            R.string.nc_settings_phone_book_integration_phone_number_dialog_invalid
-                        )
-                        Log.d(TAG, "failed to set phoneNumber. statusCode=$statusCode")
+                    when (val statusCode = genericOverall.ocs?.meta?.statusCode) {
+                        HTTP_CODE_OK -> {
+                            dialog.dismiss()
+                            Snackbar.make(
+                                binding.root,
+                                context.resources.getString(
+                                    R.string.nc_settings_phone_book_integration_phone_number_dialog_success
+                                ),
+                                Snackbar.LENGTH_LONG
+                            ).show()
+                        }
+                        else -> {
+                            textInputLayout.helperText = context.resources.getString(
+                                R.string.nc_settings_phone_book_integration_phone_number_dialog_invalid
+                            )
+                            Log.d(TAG, "failed to set phoneNumber. statusCode=$statusCode")
+                        }
                     }
                 }
 
@@ -1181,7 +1183,7 @@ class SettingsActivity : BaseActivity() {
         private const val START_DELAY: Long = 5000
         private const val DISABLED_ALPHA: Float = 0.38f
         private const val ENABLED_ALPHA: Float = 1.0f
-        private const val HTTP_CODE: Int = 200
+        private const val HTTP_CODE_OK: Int = 200
         private const val PHONE_NUMBER_SIDE_PADDING: Int = 50
     }
 }
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index dca3644d0..50dc06158 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -706,5 +706,6 @@ How to translate with transifex:
     <string name="custom">Custom</string>
     <string name="set">Set</string>
     <string name="calendar">Calendar</string>
+    <string name="nc_settings_phone_book_integration_phone_number_dialog_429">Error 429 Too Many Requests</string>
 
 </resources>