OPPO A57 4G

OPPO A57 4G

Android 12.0

Basic use - OPPO A57 4G

Troubleshooting

My phone doesn't respond

The phone memory is full

My phone is running slowly

My phone's battery life is short

No ring tone is heard on incoming calls

No message tone is heard on incoming messages

Sound settings

Select ring tone

Turn silent mode on or off

Select message tone

Turn vibration on or off

Select ring volume

Screen settings

Select language

Set date and time

Adjust screen brightness

Turn notifications on or off

Security codes

Turn use of PIN on or off

Turn use of phone lock code on or off

Find My Device

Select settings for Find My Device

Use Find My Device

Software update

Update phone software

Restore factory default settings

View software version

SIM lock

View SIM lock status