So i've got this very strange problem. This has happend to me about 3 times now. Here is the situation: So i'm in the coach with my uMBP on my lappy and iPhone 3Gs in my pocket. I receive an sms, type a response, press "send" and put the iPhone down right next to my macbook. Suddenly my screen goes black, and the breathing light turns on. I press my spacebar and the macbook goes to the login screen. So is it possible that the radiation of my iPhone makes my macbook go asleep? I know there are magnets to keep the screen closed, but is the sensor that detects if the lit is closed also magnetic?