In order to hard reset a Cube i7, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Cube i7 device will be brought back to the default configuration of a brand new device.
1. Power up the phone.
2. Open Main Menu > Settings > Change PC settings > Update and recovery.
3. Select Recovery.
4. Choose the Remove everything and reinstall Windows option.
5. Lastly, select Next. Done.