The iPhone 3G S launched a few months ago, but AT&T users haven't been able to take advantage of a few much vaunted (and much needed) features as yet: MMS, Bluetooth file-sharing, and tethering are the Big Three. This, of course, despite the fact that AT&T is the “flagship” carrier! But never mind all that, because today we have some good news in the way of this latest bit of gossip: starting with iPhone OS 3.1, AT&T users will, in fact, be able to use MMS and Bluetooth file-sharing. Welcome to 2006, iPhone owners!

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