Not a thread,just maybe 1-2 replies please, I just got a 2nd hand phone and still under warranty/exchange time, how hot can a phone get before you have to stop using it And turn it off to cool down, it a LG nexus4, so I know it old,not sure exactly how old, but should I bring it back, that's afta an hour solid use ,music, emailing,browsing,all at same time?? I have gone on a bit haven't i¿???