In order to hard reset a GNet G888, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
GNet G888 device will be brought back to the default configuration of a brand new device.
1. Turn on the phone.
2. Tap one of these sequences into the device: *#881188# or *#94267357# or *#9426*357# or *#77218114# or *#19912006# or *#118811# or *#3646633#
3. Wait until the phone restarts.