How to factory reset JIZHAO JZ-842B? How to wipe all data in JIZHAO JZ-842B? How to bypass screen lock in JIZHAO JZ-842B? How to restore defaults in JIZHAO JZ-842B?
The following tutorial shows all method of master reset JIZHAO JZ-842B. Check out how to accomplish hard reset by hardware keys and Android 4.4 KitKat settings. As a result your JIZHAO JZ-842B will be as new and your MTK8392 core will run faster.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.