T-Mobile, the Uncarrier, has had its iPhone 5S for some time now. What we love about the T-Mobile version, however, starts with T-Mobile's pricing scheme.
Assuming you have pretty good credit, you walk into a T-Mobile store and walk out with an iPhone 5S for next to nothing. Of course, it means you'll be on a payment plan to pay off that phone, but that's another perk. You're buying the phone outright, rather than having to commit to a contract.
When you buy a contract-free phone from T-Mobile, you're just paying for the device monthly on top of your service plan. For some folks, this is more enticing with an iPhone, especially those who always upgrade to new iPhones. It's easy to just sell off the phone you already own and jump onto the next one.
With that said, there are some drawbacks to having an iPhone 5S on T-Mobile. While T-Mobile is still expanding its LTE network, it's not nearly as mature and widely available as AT&T's and Verizon's networks. However, where T-Mobile LTE is available, it is reliable and blazing fast.
In the San Francisco Bay Area, where T-Mobile coverage can get very spotty, we still saw speeds of 14Mbps down and 13Mbps up consistently. In areas where we had solid coverage, we got up to around 30Mbps down and 18Mbps up. That is just ridiculously good.
Another thing to note when buying a T-Mobile iPhone 5S is that the brick and mortar carrier stores typically have limited stock. We've found that the stores carry 16GB models, so if you want the 32GB or 64GB versions, they'll have to order them for you, further delaying your instant gratification!
If you're in an area with good T-Mobile coverage and you're considering an iPhone 5S, we highly recommend it. AT&T and Verizon have their Next and Edge programs, respectively, but they're more of a ripoff than T-Mobile's JUMP program.
With an iPhone 5S on T-Mobile, you'll enjoy good battery life, good network coverage and the peace of mind knowing you're not being yanked around by a dishonest carrier who's just squeezing every last penny out of you.