"AT&T gives customers more choice with new shared wireless data plans." That's the headline of the press release that AT&T sent out about its new shared data packages. Keywords: more choice. That's a polite way of saying "we're aiming to confuse the crap out of you." Unlike Verizon's shared data packages, which are about as simple to understand as they come, AT&T did what AT&T does best: took the simple and made it far more complex than in should be. Hopefully we can break it down so it makes sense.
As you can see, the amount paid for each smartphone goes down with each bump up in bandwidth.