I live in an AT&T dead zone but am surrounded by LTE. My iPhone 5 battery is running down much quicker than my iPhone 4 did. I think this is because it is trying to hold onto a 4G signal which it barely obtains. Field test mode on the iPhone 5 confirms a weak 4G signal. I want to disable 3G and 4G on the iPhone 5 while I am home as I did with my iPhone 4, but it seems Apple has removed the Enable 3G slider in the final iOS 6 release. It is replaced by an Enable LTE switch which only drops it down to 4G. Am I missing something?