1 After battery replacement Camera won't work
So after replacing the battery successfully everything works fine except the Camera which won’t even open. Although the battery regalement never involved touching the camera connection etc and all looks ok, the Camera won’t open. Very frustrating and puzzling.
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1 
Yes it was working fine before as far as I know.
由 Guy Manchester 完成的
Have you try to restore device, maybe this help
由 Leslie Leslie 完成的