How to factory reset MASSTEL N668? How to wipe all data in MASSTEL N668? How to bypass screen lock in MASSTEL N668? How to restore defaults in MASSTEL N668?
The following tutorial shows all method of master reset MASSTEL N668. Check out how to accomplish hard reset by hardware keys and Android 6.0 Marshmallow settings. As a result your MASSTEL N668 will be as new and your Spreadtrum 7731 core will run faster.
reset Masstel n668 - video