In order to hard reset a Cube U30GT1, you should perform the following steps.

Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Cube U30GT1 device will be brought back to the default configuration of a brand new device.

1. Power up the device.


2. Starting from the Menu, go to Settings > Backup & Reset > Factory data reset > Reset Phone > Erase Everything.

3. After the phone resets and reboots, the hard reset process will complete.