Why can't I receive a notification when there is an incoming call/ message?
Cause of the problem:
Some phones automatically clean up the software running in the background after phones are in standby mode. It will cause that software like JusTalk can't receive incoming calls/messages timely, so it's necessary to allow JusTalk to run in the background.
Android Devices Notification Settings:
PS: Team JusTalk provides the same tips on JusTalk app.