Lagging, overheating on your iphone?

Well there aren’t many ways of fixing this issue, its most likely due to having to many applications open at the same time or it can be low battery, or overall system failure (isn’t very common) but im going to tell you how to keep your phone nice and cool, first you wanna give your system time put it down if its getting to hot, maybe it cause of being on the phone and doing something else, iphones cant handle but so much yall have to remember that crucial fact, if your having system failure you might wanna get that checked at a ifix or something, hope this helped!! stay safe!! xx