How to factory reset GRETEL A6? How to wipe all data in GRETEL A6? How to bypass screen lock in GRETEL A6? How to restore defaults in GRETEL A6?
The following tutorial shows all method of master reset GRETEL A6. Check out how to accomplish hard reset by hardware keys and Android 6.0 Marshmallow settings. As a result your GRETEL A6 will be as new and your MediaTek MT6737 core will run faster.
Mở Khóa Màn Hình Máy Gretel G9. - video
Hard Reset will erase all of your data
All described operations you are doing at your own risk.