Too hot to hold is a bad thing my son's S6 had to be replaced because of that it wouldn't turn on and a minute after plugging it in to charge it was similar to a stovetopI've only had my V20 get just a little warm on the back when benchmarking, and during the initial setup phase. Nothing like my S7 edge which during one of the "Android is upgrading" screens after a software update almost got to hot to hold!