On some rare occasion, when I turn on my phone the touch screen works and it let me unlock the phone but every time I get into the home screen the touch screen stops working. When I press the home screen the home button the touch screen works again. Then I turn the phone off and on again same thing happen. Restart and it works back normally. Is this a software issue with kitkat or is this a hardware problem? I am on stock rom. I hope someone know the answer to this weirdness or maybe I don't know something. Thanks.