For all its abilities and powers, the iPhone is a tremendous pocket computer, but a lousy phone.
I also converted to the iPhone from Verizon last Christmas. I'm in the 213/323/818/310 zone, and although CDMA isn't the same juggernaut here as in the Northeast, the AT&T network has plenty of bad moments. Of course we also have canyons for an excuse.
The iPhone Excuse - Gadgetwise Blog - NYTimes.com