If you bought LG KS20 Second or in black market, then you found other people file =D and lazy to delete it one by one. Try hard reset! This is how you do it.
Step by step
1. Turn off the LG KS-20 completely (do this by pressing and holding the power button and wait for the prompt).
2. Press and hold these three buttons-volume down, Call and power, till the LED (this is beside the front camera) flashes.
3. Release the buttons. That same LED should flash blue / red / green and power up.
4. The KS20 should be in a clean state.
Ok..Hope this trick useful =3
