In order to hard reset a Gigabyte GSmart i (128), you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Gigabyte GSmart i (128) device will be brought back to the default configuration of a brand new device.
1. First, power up the phone by pressing the Power button.
2. Now press the Windows button & Power button & Ok.
3. Woohoo, you've done it! Your phone will now reset and restart. Congratulations.