Ever since I updated to iOS 9.1, I've been having issues with the rear facing camera. The screen is black. When I flip to selfie, it works. But when I flip back, it shows the last image from the selfie mode frozen. Also when I tap the flash icon, it says phone is too hot and needs to cool down. Also the flas won't work. I was hoping the iOS 9.2 update would resolve this issue, but apparently not. Any help would be greatly appreciated. Thank you.