OPPO A57 4G

Android 12.0

I can't make voice calls on my OPPO A57 4G Android 12.0

Cause 1 of 12: The phone is overloaded for unknown causes

If your phone is overloaded, you can't make any calls. It may help restarting it.

Step 1 of 2

Restart your phone

Press the Side key.

Step 2 of 2

Restart your phone

Simultaneously, press and hold the Top volume key and keep them both pressed until your phone restarts.

Press the Side key.

Simultaneously, press and hold the Top volume key and keep them both pressed until your phone restarts.