Forgive me if this is a weird/stupid question, but I've noticed sometimes on my iPhone 4, usually when I'm in a phone call or using the Google Voice app, the front facing camera lens turns red. I didn't think much of it at first, but it's kind of creeping me out now. Any ideas of why it would do this? EDIT: Ok, so I feel a little idiotic now that I know it's the proximity sensor (I think?). Anyway, everything I read about it online in forums, it seems that people are very upset about it, but I'm not sure why this is a bad thing and what it means? Can someone explain?