Hello, a few weeks ago I explained here a problem I had with Airdrop on my Air 2. In a nutshell, iPad would send files but chime and not receive any file no matter the sender, iMac or iPhone. Everything solution was attempted, that is all I could find here and on the Web. No can do. So yesterday Il called Apple and a very polite and efficient gentleman took me through the hour long process. Together we upgraded to 9.3.1. Problem was still there. So the Apple guy decided it was time to go back in time. We did a complete restore with "chose a new" or something like that. And the problem was solved. His guess: a corrupt iOS but what corrupter it? It's still a mystery. Wanted to share with you. Apple service is truly amazing. Now, let's see if the battery holds up to the 14 hours of usage of 9.2.1...