How to Hard Reset LG K4 (2017) – Bypass Screen Lock
Using the Hard Reset (Factory Reset)
If your phone does not restore to its original condition, use a Hard Reset (Factory Reset) to initialize it.
1. Turn the power off.
2. Press and hold the Power + Volume Down Key on the phone.
3. Release the Power only when the LG logo is displayed, then immediately press and hold the Power again.
4. Release all keys when the Factory data reset screen is displayed.
5. Press the Volume Key to scroll to the desired option, then press the Power to confirm.
If you perform a Hard Reset, all user applications, user data and DRM licenses will be deleted. Please remember to backup any important data before performing a Hard Reset.