I purchased a brand new iPhone 4s from the Apple Store about three weeks ago. The camera (as supplied) and my Hipstamatic and 7.0 MPX camera apps all worked fine for a while. Now none of them work at all and, what is weirder, on my Photostream and Camera Roll are several copies of a photo of rolling hills that I've never seen before - perhaps this is a default image? I haven't a clue what is going on but I am not a happy bunny. Any ideas please??