T-Mobile and MetroPCS to merge - Oct. 3, 2012 I'm glad the deal with AT&T didn't go through, and I hope this strengthens T-Mobile, we need more legit competition. I'm wondering how this will work since T-Mo is GSM and Metro is CDMA. Have to call BS on the author of the article, though. Both carriers have lackluster smartphone lineups because they don't offer the iPhone? Give me a break!