Having the same issues. Telstra want to send it to be evaluated and that will take 3 weeks before I get my phone or replacement phone. Not acceptable. Can't believe how hot the phone gets. Reckon could cook an egg on it.
mine does the same thing. i have had it for 20 days and noticed it off and on happening and now it seems to happen more. i was on a call for 6 min and it was so hot i got off the call. if i connect to bluetooth in my car and talk it gets really hot as well. if i am searching internet or on fb same thing. i called sprint they said since i had it more than 14 days i had to contact samsung. the chat guy said to put it in safe mode and check it in an hour. well nothing works in safe mode. so that doesnt help. so now what??