I have bought Samsung M30 from Amazon India. There is a default application called "My Airtel" always running in the background. Since I don't use Airtel SIM, I am trying to disable this. Their is no disable option, I can only force to stop. The problem is it automatically restarts when you reboot the phone. It is also not listed in the Samsung app store where all other system apps are listed. Is it a built-in backdoor?