Alright so a while ago my front camera stopped working after I did a front screen replacement. I was told it was a software problem. I literally just updated my phone from 4.3.3 to 5.0 and my camera still doesn't work.
So basically what happens is when i tap the camera app it launches but the camera shutter doesn't open at all and the little switch between camera and video mode is sporadically turning black and gray. on and off really quick. You can change modes and all but you cannot get any signal from the front camera. I took the back off and checked the camera but IT APPEARED nothing was wrong.
Make sure that the camera`s connector cable is properly seated (it should make a "click" sound when properly connected). Worst case is that the flex cable for the camera is torn and will have to be replaced along with the camera.
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I took the phone back apart and checked the connectors. Everything was seated properly so I'm figuring it's a bad wire. I'm ordering a New camera as we speak. Thank you very much for your help