I am facing signal issue from the day I updated my software from Android 10 to Android 11. It happens 2 to 3 times in a day that my mobile drops the signals to zero of both of the sim cards. Then I restart the phone to get the signals back. The restoration of the signals do not possible even if I put my A51 to plane mode for a minute.
Clear cache and uninstall the third party applications plus if you see the problem on going then switch your phone off put the sim cards out and after sometime putin and restart again by changing sim 1 to sim 2
