Hard reset Avvio L640 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 Avvio L640 restart.
Hard reset Avvio L640 Option 2
1. Need to turn off the smartphone Avvio L640
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 Avvio L640 restart.
Attention!
To fully perform a complete reset of Avvio L640, a battery charge of about 80% is required.
When the reset is completed, all personal applications and data installed in the memory Avvio L640 will be erased.