OnePlus 8 Phone
- Press and hold down the Volume Down + Power buttons for a few seconds.
- Release the buttons once you see the OnePlus logo flashing on the screen.
- You may be asked to enter your PIN/Password to enter recovery mode.
- If presented with a language screen, select your language.
- Click Wipe data and cache
- Click on Reset everything.
- Your phone may ask you to confirm that you wish to do this, click yes and then wait for the process to complete.