This is ridiculous. My cheek hangs up calls, muts me, tries to facetime everyone, and generally makes calling a huge hassle. Furthermore, since updating to 4.1, I've noticed that it takes my phone up to a minute to start ringing after I hit the call button. Is anyone still having these problems? Should I go get my phone replaced or are all iPhone 4's doomed with faulty proximity sensor issues? Truthfully, I would've replaced my phone by now if it didn't mean losing all my hard work in Angry Birds.