Apparently, the lack of service features such as tethering and MMS, one long a staple of other wireless carriers isn't AT&T's fault. Likewise, AT&T's inadequate bandwidth issues are also someone else's fault.
AT&T should just rename themselves FT&T, or FailT&T. Even
though they presumably knew exactly how many iPhones had been
pre-ordered, and could estimate the demand on opening weekend, many users reported activation issues
with their new iPhone 3Gs and 3G S’s. Over the weekend, Apple had to
make amends, so they sent out emails to those with activation problems,
offering them a $30 iTunes gift certificate and an official statement that the delays could be up to 48 hours.