How to factory reset UNIWA F4000? How to wipe all data in UNIWA F4000? How to bypass screen lock in UNIWA F4000? How to restore defaults in UNIWA F4000?
The following tutorial shows all method of master reset UNIWA F4000. Check out how to accomplish hard reset by hardware keys and Android 8.1 Oreo settings. As a result your UNIWA F4000 will be as new and your MediaTek MT6739 core will run faster.