Question: will AirDrop work over 3G and 4G? It seems like an incredibly useful feature. But I can't think of too many situations where I'd want to use AirDrop, and that me and my friends are on the same Wi-Fi network. In most situations I'd be in a place where I'm using cell service. As for Bluetooth, I never use it for anything else, and it would be annoying to have it on just for this feature. Anyone here with any info?