OPPO A57 4G

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.

Solution: Restart your phone.

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.

1 Restart your phone

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

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