Iphone's touch screen doesn't respond
First post here, hello to everyone:D
Well here's the problem: My screen doesn't respond to touches SOMETIMES and thats the weird part cause i cant figure out what exactly the problem is. I noticed this happens sometimes when i change the angle im holding the phone but this could be totally irrelevant (how could the accelerometer cause that problem??)
So when it gets unresponsive to touches, i press the power button to "lock" it and then usually i unlock it without problems. Till it gets unresponsive again in random times:spinme I did a hard reset and it helped for quite a long time but recently it started doing it again and after a lot of resets, still no improvement.
I have an iphone 3gs, 16gb, for about 4 months, jailbroken but im almost sure this has happened once before jailbreak too. How do i figure out if this a software or hardware issue?