Hard reset Lava Z40 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 Lava Z40 restart.
Hard reset Lava Z40 Option 2
1. Need to turn off the smartphone Lava Z40
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 Lava Z40 restart.
Attention!
To fully perform a complete reset of Lava Z40, a battery charge of about 80% is required.
When the reset is completed, all personal applications and data installed in the memory Lava Z40 will be erased.