Hard Reset for Oppo A33
In our description database there are 2 solutions for performing hard reset for Oppo A33.
Choose the first method and follow the steps to perform a hard reset. If the first solution does not work, try the next method.
Please remember! Hard reset will delete any and all data your device contains; like pictures, contacts, messages, apps etc. Everything. Oppo A33 device will be brought back to the same configuration as that of a brand new device.
Instruction 1:
1. Hold down the Power button until the phone turns on.
2. Starting from the Main Menu, select Settings, Backup and Reset and Factory Data Reset.
3. Lastly, select Reset Phone and Erase Everything.
4. Voila. Wait for your phone to reset and restart.
Instruction 2:
1. Switch off the phone by holding down the Power button.
2. Press Volume Down and Power buttons at the same time. 
3. Oppo logo will appear. When it does, let go of the above buttons.
4. Using Volume and Power buttons, select English.
5. Lastly, select Wipe Data And Cache, Yes and Reboot. 
6. Allow the phone to reset & restart now. Done.