My iPhones screen won't work?

Ok so my friend dropped my phone a while ago and I could still use it. But all of a sudden, like 2 months later, the screen won't respond to my touch in some areas. I don't know what to do?

If it is because he had dropped it, then it would have started immediately. Since there's no water damage, your warranty SHOULD be fine. Get a new one.

Errmm… Try taking it to Apple or a computer store…

Also maybe it will depend what warranty you're on