This is something I've noticed since IOS5. First on the IP4, then on the 4S. In 3 towns, in 2 states (in places where I've usually had a good connection). Sometimes my phone/data will just stop working. I'll see plenty of bars, and a 3G but nothing happens. And it stays that way. If I quickly toggle wireless, I see the same, but if I turn off wireless for a few minutes then turn it back on I'll see something very different (usually, a bar or two, and NO 3G/E etc. Eventually after that it will reconnect. Is anyone else noticing that it's having a hard time reconnecting after it loses service lately?