My iPhone is heating up..

[calishoeking21]

my iPhone has been getting extremely hot on the upper level of both sides.
Its been getting hot when i use the internet, maps, media, etc.
Does anyone else have this happening? if yes, is it normal?
if no, what is the best thing i can do to get this resolved?

I really hope that I don't have to send it back for repairs.

If I do im going to demand a new iPhone.. for $600, I want a brand
new functioning device, not a refurbished one.

 

[Hondamaker]

Mine has gotten very warm too, after using it hard.

 

[Knowsall]

Theres a web site that shows an iPhone taken apart. My phone has been getting hot too after use. Its charging now and its nice and cool. Was out today I had iPhone in my pocket in its iPhone cover for like 3 or 4 miles...when i took it out it felt hot. Naturally if you have your iPhone in its cover it will heat up. Its a computer device that needs to breathe.
iPhone Operating temperature: 32° to 95° F (0° to 35° C) Nonoperating temperature: -4° to 113° F