diff --git a/app/src/main/kotlin/com/tutpro/baresip/SettingsScreen.kt b/app/src/main/kotlin/com/tutpro/baresip/SettingsScreen.kt
index 9641be34..a880c228 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/SettingsScreen.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/SettingsScreen.kt
@@ -1031,6 +1031,11 @@ private fun SettingsContent(
                                 )
                         }
                         else {
+                            try {
+                                dialerRoleRequest.launch(Intent(Settings.ACTION_MANAGE_DEFAULT_APPS_SETTINGS))
+                            } catch (e: ActivityNotFoundException) {
+                                Log.e(TAG, "ActivityNotFound exception: ${e.message}")
+                            }
                             BaresipService.instance?.addMobileUserAgent()
                             restart = true
                         }
@@ -1100,6 +1105,7 @@ private fun SettingsContent(
             ) { _ ->
                 val isHeld = roleManager.isRoleHeld(RoleManager.ROLE_SMS)
                 viewModel.defaultMessaging.value = isHeld
+                restart = true
             }
             Switch(
                 checked = defaultMessaging,