Why the rear camera won't work?

[AC Question]

I have a Lenovo A319 and I can only take photos and videos with the front camera.
It has no option to flip into rear facing camera.
It worked fine,but it didn't when I took it from a mobile shop,where they fixed a problem.Can somebody help me ?

 

[dpham00]

Take it back to the mobile shop where they fixed a problem. It could be related

Sent from my Verizon Samsung Galaxy Note 5