ATT wants subscribers to have a merry Christmas this year. It also wants some of the people who have been fleeing its network in searching of cheaper smartphone plans to stay put. As such, the carrier on Thursday announced a brand new set of service plans that are far more consumer-friendly. ATT is still making plenty of money on them, of course, but several of the plans offer significant savings compared to the older plans they replace. What’s more, the new plans finally — FINALLY — take smartphone subsidies into account to an extent, and they automatically drop in cost by $15 per month once your phone is paid off. Or, if you bring your own phone or opt for