I've had my S7 for less than a year now and my phone will overheat during normal use (i.e. no video, music, games, or heavy apps).
It will fully charge to 100% and after 10 minutes of use it will be at 60% and if it reaches below 40% battery, the phone will shut off and the battery will be effectively drained. Is there a warranty for battery exchange or warranty for defective and/or overheating? Obviously this is a concern because even when it's not in use it will sometimes overheat. One occasion is when it is placed under something or in a pocket. No recently added apps, and it is frequently turned off, whether by overheating or manually.
Thank You