Why is my camera not working?

So I have an E71, but the rear camera doesn't work, when I click the camera app, it says "Camera: Feature Not Supported". It came twice before, but went away after a while (couple of days), but it has happened again, and it's been like this for 4 months. I also have another camera app, and tried it, but it says the app isn't supported, I'm guessing because it thinks there is no camera, and the app needs a camera to work. Bluetooth doesn't work either, when I click turn On Bluetooth, it just says "Unable to perform Bluetooth operation". I think these both are because of a ribbon connection problem, so I tried adding a bit of pressure onto the camera, and nearby areas, I've tried that many times, but it never worked. Does anyone have any idea why this is happening? Could it just be a ribbon connection problem or the actual camera hardware failing? Thanks a lot!