The Problem: On a sunny day, if you leave your iPhone in the sun too long, you’ll see a warning telling you that your phone is too hot and it needs to cool down before you can use it again. The Fix: Please, don’t put it in the fridge or freezer. Remove the case (if you have one) and keep it out of direct sunlight, then simply wait and it should cool down. It can be a good idea to switch on Airplane Mode while waiting for it too cool How to jailbreak iPhone, iPad and iOS iphone Flashing iphone home