Hello, I recently got the iPhone, and I am pleased with it in many ways. However when Im on the internet, my phone gets very hot on the top and top back of the phone. The iPhone doesn't have any exhaust heat or anything like that, or does it? How hot can it get? Can I use the phone even if its pretty hot? Is it just my phone? The only way I can think of cooling it is if i blow in the earphone hole? Or I put it up against a fan. Any ideas? Thanks.