Hard reset Cube U21GT Option 1
1. Go to Settings
2. Click on the menu About Phone
3. Next item Storage
4. Then click on Factory data reset
5. Mark opposite Factory Reset and Format disk
6. Click on Start cleaning
7. Reset will complete after Cube U21GT restart.
Hard reset Cube U21GT Option 2
1. Need to turn off the smartphone Cube U21GT
2. Press Volume Up + Turn on for a few seconds
3. Stop pressing the buttons when we see the brand logo on the display
4. Click Clear Data
5. Click on Start
6. The reset process will end after Cube U21GT restart.
Attention!
To fully perform a complete reset of Cube U21GT, a battery charge of about 80% is required.
When the reset is completed, all personal applications and data installed in the memory Cube U21GT will be erased.