IPhone 5 screen frozen during call?

I was on the phone during a call trying to put it on speaker then when I tried to end the call it wouldn't let me it was pretty much frozen. Is there a fix for this?

Press the "Home" button and the "Lock" button at the same time, like you're taking a screen shot, except hold it down until your phone resets. (The screen should go black, then change to the apple logo, you can release the buttons when you see the apple logo.) After the reset, make sure all of your software and applications are up to date.

Just hold down the home and lock button. This is how you performe a hard reset on your iphone built in for exactly this reason. If this dosent work their are 2 other ways… 1) waite till your iPhone runs out of battery or restore it from a back up in itunes.