Pls, I jus started using this phone "LG G2" not more than 5 months, now I'm surprised that the upper part of the screen suddenly became unresponsive although it fell once about a month after i started using it. I did both soft and hard reset, also removed the screen protector wc gave me no positive result.
I don't know if it is the touch pad that is faulty or any other cause i dont knw about. Someone should pls help.

Thank you in advance