I've never noticed it on mine, but I have on my wife's when she's handed it to me to look at something occasionally like a FB video or some random thing. I have no idea what she's doing on it to cause it though. I can't even get mine that warm with gaming. Something is making the A11 work for sure though. My guess is unoptimized apps at this point. (not optimized for the A11 I'm not talking about screen layout)