How to factory reset OPPO R819? How to wipe all data in OPPO R819? How to bypass screen lock in OPPO R819? How to restore defaults in OPPO R819?
The following tutorial shows all method of master reset OPPO R819. Check out how to accomplish hard reset by hardware keys and Android 4.2 Jelly Bean settings. As a result your OPPO R819 will be as new and your MediaTek MT6589 core will run faster.