As potential buyers begin to circle, T-Mobile continued to attack the U.S. mobile market as if nothing has happened. French ISP and mobile carrier Iliad revealed it has made an $15 billion offer for T-Mobile US, while Sprint and SoftBank prepare to make their acquisition overtures official. Meanwhile, T-Mobile just kept adding new customers. It would have been very difficult for T-Mobile US to repeat its blowout 1st quarter, in which it grew by a staggering 2.4 million customers and basically dominated smartphone growth in the United States. But in Q2 T-Mobile managed to bring in a net total of 1.5 million new subscribers, putting it ahead of all of its three larger competitors.