1. Threaded SMS from email. Previously when getting SMS that was sent via email each one would show as coming from a different sequential number instead of threading. I think this was ATT issue more than iPhone. Has this changed? 2. Per contact SMS tone. Can this be done in any way? A jailbreak app would be fine also if it exists. 3. Antenna issue fixed? Is this a non issue now if using a case? 4. Proximity sensor fixed? Seen a few reports that 4.1 fixed this.