T-Mobile's US branch swung back to losing subscribers owing to its struggles to lure customers away from the iPhone and rival Android supporters. It lost a total of 23,000 subscribers in its latest quarter, ended in January, where it had added 137,000 users the season before and 371,000 a year ago. The overall customer turnover rate was also up to 3.6 percent and about three times higher than what was seen at AT&T and Verizon.
