LG LM-K300QM, User Manual

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Appendix 121
The touch screen responds slowly or incorrectly
If you attach a screen protector or optional accessories to the touch
screen, the touch screen may not function properly.
If you are wearing gloves, if your hands are not clean while touching the
touch screen or if you tap the screen with sharp objects or your fingertips,
the touch screen may malfunction.
The touch screen may malfunction in humid conditions or when exposed
to water.
Restart your device to clear any temporary software bugs.
If the touch screen is scratched or damaged, contact the LG Authorized
Service Center.
Hangs or freezes
Restart the device
• If your device freezes or hangs, you may need to close apps or turn the
device off and then on again.
Perform a boot-up
• Press and hold the Power/Lock key and the Volume Down key until the
device restarts.
Reset the device
• If the methods above do not solve your problem, perform a factory
data reset.
• On the settings screen, tap System Restart & reset Factory data
reset .
- Reset all settings for the device and delete data. Before performing
the factory data reset, remember to make backup copies of all
important data stored in the device.
- If you have registered a Google account to the device, you must sign
in to the same Google account after resetting the device.