How to factory reset LG K40S? How to wipe all data in LG K40S? How to bypass screen lock in LG K40S? How to restore defaults in LG K40S?
The following tutorial shows all method of master reset LG K40S. Check out how to accomplish hard reset by hardware keys and Android 9.0 Pie settings. As a result your LG K40S will be as new and your MediaTek Helio P22 (MT6762) core will run faster.