[SOLVED] Hot phone

I bought my first iPhone a couple of days ago. An hour ago my pocket
got real hot, and I pulled out my hot new iPhone 4. I didn't think
to check the power until after I plugged it into a recharger and
Googled my problem. At that time it was half charged.

This afternoon, I solved a problem that I had in getting it to see my
Apple Wireless keyboard. I needed to turn off Blue Tooth in my iPad
first. Wondering if Blue Tooth was my problem, I turned it off of
my iPhone. Maybe it was, as it's back to normal now.

But maybe it wasn't. What should I be looking at to make sure I
don't need to replace my phone?


Thanks.