Your iPhone or iPad is a hard-working computer, even though it’s small enough to fit in your pocket or a bag. But unlike desktop or laptop computers, it doesn’t have a heat sink or a fan to regulate its temperature and keep everything cool. When you put any device under stress, it will generate heat.Unlock the free "iPhone and iPad Shortcuts" cheat sheet now!This will sign you up to our newsletterEnter your EmailUnlockRead our privacy policy But there’s a difference between a device that’s warm to the touch and overheating.