I got an exchanged iPhone 6s Plus 2 months ago. Worked without any problem. Changed nothing and using iOS 10.3.3 Today when playing clash Royale over LTE my phone got so hot that I almost burned my hand. Lost in some minutes 10-15% battery. This does not happen when using WLAN. I made complete clean install in DFU mode but still when LTE is on the iPhone gets hot I guess I should get a new one right?