“In the fourth quarter of 2008, T-Mobile USA added 621,000 net new customers compared to 670,000 in the third quarter of 2008 and 951,000 in the fourth quarter of 2007. T-Mobile USA’s gross customer addition growth in 2008 compared to 2007 was offset by higher blended churn, as explained below. Net new contract customer additions amounted to 267,000 in the fourth quarter of 2008, or 43% of total net new customer additions, compared to 293,000 or 44% in the third quarter of 2008 and 733,000 or 77% in the fourth quarter of 2007. Contract customers include FlexPay contract customers.”
With all things considered (read: bad economy), it looks like T-Mobile did a fairly decent job in retaining its customers and a not-so-bad job at gaining new ones. The official Q4 2008 numbers won't come out til later but for the most part T-Mobile seems confident in its growth because of their continuing 3G rollout and new attractive devices. G2 anyone?