I left T-Mobile for iPhone 5
12 years with T-Mobile with a plain jane simple voice phone. Jumped to a Mobile Sharing plan at AT&T when the iPhone 5 was announced. Cost less than $15/mo more to have unlimited voice and text at AT&T than 500 minutes, no text , and no data at T-Mobile. And that was supposedly on a special deal grandfathered plan. Plus I get a share of the data quota on the Mobile Sharing plan. Was not unsatisfied with T-Mobile but the current announcement is a day late and a dollar short.