I have noticed a few posts about devices heating up, and wanted to address this since this is not always bad, when running an intensive game such as IF on a phone or tablet you actually do want some heat. This means that the CPU, and GPU are being put to good use. Now there is a too hot, and mobile devices are usually pretty good at detecting this, which will result in a thermal throttle. This essentially means that the performance is dumbed down to lower the temperature. Now back to some heat being alright. Heat is not only ok but nessary, CPUs, GPUs, the screen etc. work by controlling the flow of electrons, and changing energy forms, avoiding technical issues the main way this is done, or one of the main ways in with resistors, resistors creat heat by nature, and it can’t be helped, die to this heat is nessary for device function. The reason some heat is ok is that you actually want to feel heat on the back, now lets take the device I use as an example, I use the IPad mini 4 (many devices use this, so this is hardly device specific). This device has a metal shell that covers the back. Now in heavy use I can feel the top (In landscape home button on the right) is hotter than the bottom, this is becuais this is where the goodies are at. I am talking about the CPU, RAM, etc.
Now at just 6mm thick apple would have a hard time putting raven a laptop level fan in here, let alone a full computer style fan or water cooler. So they took advantage of that mettle shell I talked about a little bit ago. For anyone who knows a bit about heat transfer it is no surprise that that aluminum back is pretty good at moving that heat. So they put the hot buts right up against the mettle back, and it takes the heat, spreads it out so that it covers a larger area, and eventually dissipates into the air. Due to this a device running at high performance no where near overheated can feel very hot. Also to prevent thermal throttling take off cases, or accessories prior to long flights. Now if you want to use thermodynamics to prevent thermal throttled devices then don’t put your devices on things like wood tables, or anything plastic or rubbery, as all of these are great INSULATORS. You want to put your device on something that will conduct the heat away from it, Ex. A metal table, or eaven a stone counter is much better than wood. Also keeping it away from the sun will help, as eaven in the winter the sun will still heat it up. Also other suggestions like lowering brightness, and closing other apps do help, so continue to use those. Hope this helps someone, and post below, or PM me with any questions, would be happy to help.
P.S I am not a thermodynamics expert, just wanted to help people with what I do know.