Updated my iPhone 4 to iOS 5 yesterday. Everything seems to work fine, it seems, except the actual phone app. When I click it to make a call it immediately crashes and goes back to the home screen. I was able to make a call by calling out of the address book but the screen was blank. At the top I got the green bar saying "Touch to return to call" and when I clicked on it I'd see the regular phone stuff you'd expect to see for a split second before the screen went back to black with the green bar at the top. I was unable to end the call without turning the phone off. I can receive calls and everything works fine until I answer the call. I'm able to talk with no problems but I get the same problem described above when actually looking at the phone. I have tried turning the phone off and also hard resets but nothing works. Anybody know what's wrong or how to fix? Thanks, d.