Hard reset Oppo F9 Pro Option 1
1. Go to Settings
2. Click on the menu About Phone
3. Next item Storage
4. Then click on Factory data reset
5. Mark opposite Factory Reset and Format disk
6. Click on Start cleaning
7. Reset will complete after Oppo F9 Pro restart.
Hard reset Oppo F9 Pro Option 2
1. Need to turn off the smartphone Oppo F9 Pro
2. Press Volume Up + Turn on for a few seconds
3. Stop pressing the buttons when we see the brand logo on the display
4. Click Clear Data
5. Click on Start
6. The reset process will end after Oppo F9 Pro restart.
Attention!
To fully perform a complete reset of Oppo F9 Pro, a battery charge of about 80% is required.
When the reset is completed, all personal applications and data installed in the memory Oppo F9 Pro will be erased.