Thermal efficiency is a major concern with modern smartphones and tablets, and the following video shows a lab test illustrating just how butter-melting hot these things can get. As you’ll see from the video, Qualcomm’s engineers put a lot of work into ensuring that devices running on Snapdragon processors stay cool while delivering all the performance and features you expect from a smartphone.

Apart from the heat map test the other tests include literally putting butter on top of the devices to check if the heat is too much before it melts .check the video below.