Reset to Factory
I am having a problem with the camera on a 4s iPhone and have read a few posts here and it would seem the problem started with iOS 8. One suggestion is to reset to factory which I tried both through the reset function on the phone and also through iTunes however although it appears to have reset correctly and completely it still has iOS 8.3, so is not back to the factory settings which was an earlier version of iOS.
If it is not possible to reset back to an earlier iOS if I do a complete backup of my other iPhone 4s which is running iOS 7 can I restore it to the iOS 8.3 phone, and will it also restore the iOS version.
If neither of these will work is there any other fix for the camera issue. After a reset it will work until you try to change to the front camera and it freezes the app so no matter what you do nothing works. If you end the app and restart it it appears to be functional again but the screen is black and by selecting the icon to switch between front and rear cameras does nothing, You can change modes from Camera to photo to pano etc but the screen remains black. Rebooting with the home button plus the on/off or sleep button but the screen is still black when you go into the camera app. A factory reset does bring the rear camera back and it seems to work fine until you want to use the front camera and then you have to start all over. The camera does work as I installed an app for scanning QR and bar codes and the camera works fine in that app although it does not have a function to switch to the front camera so not sure if there is a problem with the front camera.
Thank you
iPhone 4S, iOS 8.3