OPPO Reno13 Pro 5G
Setting date and time
It's important that the date and time are correct as some phone functions won't work.
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press System & updates.
Press Date & time.
Press the indicator next to "Set time automatically" to turn on the function.
Press the indicator next to "Set time zone automatically" to turn on the function.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.