A. 1. Check if the app has permission to run in the background by going to Settings > Apps > Tawasal SuperApp > Permissions and enabling necessary permissions. 2. Ensure that 'Do Not Disturb' mode is not enabled, which may restrict notifications from other apps during calls.
B. 1. Try using a different calling method, such as a third-party app that allows multitasking during calls. 2. Restart your phone to refresh the system and app functionalities.