A couple of things:

  1. We don’t know if this means a merger, straight acquisition, or if T-Mobile with continue to operate as T-Mobile.
  2. It most likely means T-Mobile is no more and all its customers are now AT&T customers
  3. I think this is a good thing, not a bad thing.
  4. If indeed T-Mobile and AT&T become one company, then it will make them the biggest wireless carrier in the U.S. (Wikipedia says AT&T is roughly at 95 million subscribers and T-Mobile is half that. Verizon right now is only a few million ahead of AT&T.) This matters in the consumer eye only and changes nothing about network performance.

I doubt the DOJ will have a problem with this, how can they if they are letting the Comcast and NBC merger go through. Also Verizon will be the reason there is no problem here. This is a warning shot over Sprint’s bow — man do they need to do something relevant.