Hi community, I had owned my iPhone 4 for a long while since last year August. I never have the proximity sensor issue. After installing iOS 5 the problem surfaced. I am wondering anyone else met with the same issue? I had done recovery and factory setting for two to three times. Nothing helped. Even after I decided to ditch my backup believing that it is the old setting causing it, it won't work. I believe that there are more pros here than discussion forum so decided to ask for help. PS: For those who do not know what is proximity sensor issue. It is the accidental cheek press that we get when making a call.