How to factory reset HTC One M8 Dual SIM? How to wipe all data in HTC One M8 Dual SIM? How to bypass screen lock in HTC One M8 Dual SIM? How to restore defaults in HTC One M8 Dual SIM?
The following tutorial shows all method of master reset HTC One M8 Dual SIM. Check out how to accomplish hard reset by hardware keys and Android 4.4 KitKat settings. As a result your HTC One M8 Dual SIM will be as new and your Snapdragon 801 core will run faster.
How To Hard Reset HTC One M8 - video
HTC ONE M8 Bootloader Mode and Factory Reset - video
Hard Reset will erase all of your data
All described operations you are doing at your own risk.