How to factory reset DOOGEE S40? How to wipe all data in DOOGEE S40? How to bypass screen lock in DOOGEE S40? How to restore defaults in DOOGEE S40?
The following tutorial shows all method of master reset DOOGEE S40. Check out how to accomplish hard reset by hardware keys and Android 9.0 Pie settings. As a result your DOOGEE S40 will be as new and your MediaTek MT6739 core will run faster.
Doogee Mix Hard Reset Buttons - video