Overheating issue

[happycamping]

I just got my 4S a few days ago...I am curious though, I have noticed that my 4S seems to get reallly hot at one spot on the back of the phone but nowhere else. I figure this is probably normal but wanted to make double sure that it is. This is my 3rd iPhone so I know that this amount of heat hasn't happened in my last two. So I am wondering if I should be worried about it and replace the phone.

 

[Accidental Post]

Not normal. Battery killer. Are you using the Charger that came with the phone or a third party one? Definitely time to replace.

 

[noaim]

The iphone can get warm if charging and using at the same time but it shouldn't be real hot..

 

[iMacca]

Mine does start to warm up with heavy use, but no more than any other iPhone / Android I've owned