The United States operating segment increased its customer base during the year. The number of customers at the end of 2009 increased to 33.8 million with a total of 1.0 million net additions. Net customer additions decreased year-on-year, with strong growth in wholesale (including MVNOs and machine-to-machine customers) which were partially offset by losses in T-Mobile USA branded customers. Blended churn increased to 3.2 percent from 2.9 percent due to competitive intensity during the year, including handset innovation and market launches by regional unlimited wireless carriers. Customer development. Dec. 31, 2009 millions Dec. 31, 2008 millions Change millions Change % Dec. 31, 2007 millions United States Mobile customers* 33.8 32.8 1.0 3.0 29.8 * One mobile communications card corresponds to one customer. The total was calculated on the basis of precise figures and rounded to millions. Percentages were calculated on the basis of figures shown. United States. 3G network build-out // Increase in data revenue 84
