For those that don't know, AT&T and T-Mobile have been partners for the longest time. Anywhere where AT&T doesn't have coverage, they used T-Mobile towers.......and the same goes for T-Mobile. It's called "piggyback" networking. Nothing new. All AT&T is doing now is acquiring T-Mobile to cut down on the costs it pays to T-Mobile for the people using the T-Mobile towers, as well as vastly improving their infrastructure and their 4G. Acquiring an already healthy 4G system instead of building it from scratch is the quickest and most cost effective way to go about it. This is a plus for AT&T customers as their 4G and 3G will greatly improve. It's a big benefit to T-Mobile customers because they can now get the iPhone and a vastly larger network.
All in all, smart move on AT&T's part (and hopefully those AWFUL T-Mobile commercials will go away)
All in all, smart move on AT&T's part (and hopefully those AWFUL T-Mobile commercials will go away)