my samsung s4 touch screen is not working, i tried removing the battery since i can no longer tap on the screen, i cannot proceed to the keypad and even if i connect the device to my computer i still can't access my phone's memory or sd card coz the phone asks if i should connect the device to the computer which again i cannot choose to bcause i caa\nnot tap on the screen, what should i do? please help,, this was given to me by my brother and i really value this much :(