@unimp0rtanttech Whether you are on 2G or 3G we charge the same for data, your account wont change due to the 1900 refarm ^KM
— T-Mobile USA (@TMobileHelp) June 27, 2012
T-Mobile has a large number of users who are unofficially using the iPhone on their network, and dealing with slow speeds. However, with a huge rollout of an iPhone-compatible, high-speed network expected for the near future, these users are left wandering how their accounts are going to transfer. In a conversation over Twitter, T-Mobile has confirmed that iPhone users will still keep their low-cost plan for unlimited data, even with the speed boost.
That means if you’re on T-Mobile, you get to keep just forking out $5 per month. Nice!