Over heating of device is a matter of serious concern, especially in Android models. It can seriously affect the performance of your device and also may lead to sudden power drain or bloating of battery and can even damage the device from inside.
It is heard that to beat this Samsung is planning to incorporate liquid cooling technology to keep the device cool. It is possible by running pipes of cool liquid inside the device. But the major challenge is the size of the device as the new technology could increase the size of the device to a great extent. It is a real challenge before Samsung.
It is not the first time this technology is being used in a smartphone. Sony Xperia Z5 and Lumia 950 XL already have built in liquid cooling feature.