I've randomly discovered this bug while using the camera which causes the phone to believe your iPhone has overheated and it's too hot to use the flash. Open Camera, go to Video, switch to front facing camera, go to Photo. Now there should be an exclamation point in the top left and when you tap it an error claims the iPhone needs to cool down. Very odd! Maybe the phone really does need to cool after seeing our attractive faces for a moment Is anyone else experiencing this? I have a 6s Plus running iOS 10.0.1.