I'm currently using iPhone 4 on Verizon. Never really had problems with the 3G signal in the Western NY area. However, I noticed that since downloading iOS 6 last week I've been noticing the 3G signal disappears at weird times and goes into the 0 or O mode. I've tried powering down and rebooting and sometimes that works, but I'm now losing 3G in places that I never did before. Is there some setting that I need to adjust? Thanks!