Why is my iPhone 4's touch screen not working well?

I have an iPhone 4, and has recently stopped working properly. When I unlock it, it will sometimes take at least 5 swipes to work. It's even worse when I try to put in my passcode. In the middle of playing a game or texting someone, the touch screen will stop working, and I can't tap. The home and power button still work just fine, but I need to power off and then back on again to get it working again.

If anyone can help, it is greatly appreciated.

To me it just sounds like the processor is getting old. Which can happen in phones after a few years of use, you never said how long you have had it for though. Try contacting apple or take it to an apple store and see what they say. Most of there older phones like 3 3g 3gs and I phone 4 are not going to be supported shortly. You can still use the phone, just no more updates and some apps won't work.

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