Hard reset LG K40S 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 LG K40S restart.
Hard reset LG K40S Option 2
1. Need to turn off the smartphone LG K40S
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 LG K40S restart.
Attention!
To fully perform a complete reset of LG K40S, a battery charge of about 80% is required.
When the reset is completed, all personal applications and data installed in the memory LG K40S will be erased.