Lena When you say your Iphone is doing this is the Device off an Charging, Charging an your using it say like Browsing? Give me a Little Explanation we'll see what we can Do.. b33
Lena give these Links a Look to See if they can Help the one on Top is the Iphone Help Center the Next one Down is the Online Manual.. just Tap left Click on the Blue
It turns on when your chargeing to I think. Mine gets very hit when not even doing anything i called apple
Once and they sent a text to it to and it sent back diagnostic back to figure out if the temp gets to hot as well as if the battery has issues. You have to be on a different phone.
if you use it a lot it will get hot. charging it and having it not turned off, using it while plugged into charger will make it hot too. you might have spyware on your phone. or a lot of applications running in background you don't need running. you should go through and turn off "apps" you don't use or hardly use.. If that doesn't help you cool things down a bit you should just go into your apple store and have them check it out for you