My 4s is not to burn when it burns 3g use for this little time using it, and do not know why sometimes does not unlock to give the button on / off / lock and make facetime camera side screen makes blinking a lot, in a few days will go to change it to the apple store valence, the man of genius bar whenever I go, I've gone for various reasons 4 or 5 times, tell me, do you hear your you come here often not? and stuff, haha all laugh!