How to fix camera issues on the Micromax Q427?

 Initially it was working good but for the last one week it is not working properly. It shows "cant connect to camera". I have tried opening camera in safe mode. But same result. I have also tried factory reset but no use. How to solve this issue . 

Hmm.. This might sound weird, but I found similar problems on different phones, and what owners did was drop the phone or tap the surrounding area of the camera.

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