T-Mobile USA has hit a major milestone: 25 million customers. According to a company press release, T-Mobile added more than 900,000 new customers including 783,000 new postpay customers in the fourth quarter. For the year, the carrier attracted approximately 3.4 million new customers. At the end of 2006, T-Mobile USA had almost 1.6 million postpay converged device users, consisting of BlackBerry and T-Mobile Sidekick users. This represents a net increase of almost 211,000 users in the fourth quarter 2006, compared to a net increase of 172,000 users in the third quarter 2006.