Last Updated: Jul 02,2012
Looks a little hot to me and I wouldn't play games are anything while the phone is charging because too much heat is bad for your device.
I was playing Angry Birds for like an hour or so when it got to 37
If it's a tad warm I don't think I'd worry, but if it's pretty hot to the touch and you feel like you can't hold it then it's too hot.
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