Chosen Solution
Lost my phone on the floor. Ever since, the rear camera is out of focus when activated. When I give the phone a little knock on the side, the focus starts to work. Is this something that can be fixed without replacing the camera?
This can be a common fault with Samasung Galaxy phones, either the camera will jitter back and forth and fail to focus or the device will display an error and refuse to start the camera app. Id try my luck and make a warranty claim, just tell them its always been a bit funny and just stopped working. if they refuse the warranty claim then you can follow this guide down to step 24, then disconnect the camera from the underside of the motherboard. Hope this helps..
