It is possible to have fast T-mobile service and use an iPhone on their network. According to PCMag, “If you’re looking to use an iPhone on T-Mobile, all iPhone 5 models work on T-Mobile HSPA+ 21 if unlocked, and both AT&T and factory-unlocked iPhone 4S and below models work, as well. AT&T iPhone 5s may also get T-Mobile LTE service when it launches.” Also, Verizon and Sprint iPhone 4 and 4S models will not work on T-Mobile. PCMag created a list of the 49 cities where your can expect fast speeds, check the gallery.
