Hi, Recently my iphone 4 has been taking photos with a black dot towards the center of the screen. I cleaned the front lens on the case but that was not it. So I called apple support and they said it would cost $150 to fix my camera issues (my 1 year warranty has passed) So now my question is do you guys think that I can open the phone and clean the camera lens with compressed air to solve my problem? Pics will be posted. I ordered a pentalobe screwdriver which will be here tomorrow. If I cannot clean the lens where can I get a legitimate OEM camera to replace it myself? Thank you very much!