In order to hard reset a Gemini Devices GEM1000 D10, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Gemini Devices GEM1000 D10 device will be brought back to the default configuration of a brand new device.
1. Make sure that the phone's display is turned on by pressing the Power button.
2. Starting from the Main Menu, select Settings > Backup & Reset.
3. Continue by selecting Factory data reset > Reset device > Erase everything.
4. Voila! The hard reset process is now over.