Hi, I'm looking for iPhone5 owners in the UK with the carrier Three. Have you noticed that when you lose signal (e.g. when going underground), the iPhone does NOT reconnect automatically after returning to a place with plenty of signal? I was driving today out of an underground car park and the iphone would not reconnect even after 10 minutes. I had to force it by turninng on Airplane mode. is it a 3 fault or an iphone bug?