I plan on getting an iPhone 3GS on the AT&T website. I will have 30 days to try it and decide if I want to keep it. My main concern is phone reception. My home area has 3G coverage and my main phone usage will be in 'best' areas as shown on the coverage map. What should my general expectations be in the 'best' and 'good' phone coverage areas? Please relate your experience. If my home and primary work place has good phone performance I will keep the iPhone, if not I will return it. If I keep it can I then port over my long time cell phone number from my current provider? My billing account address from my current provider will be the same as my AT&T billing account address. Thanks.