We all knew 3G wasn't the end, and even 4G has been short lived; there's LTE
to think about now! But as with all technology, progress will keep on pushing forward, and T-Mobile is already thinking ahead. The U.S. carrier has recently announced multi-year agreements with Ericsson and Nokia Siemens Networks to support its $4 billion 4G network evolution plan, which will include a modernization of 37,000 cell sites and a move to the latest LTE release 10 capable equipment. Initially, this effort will improve existing voice and data coverage, make its 4G network compatible with a broader range of devices (including the iPhone), and pave the way for long term evolution (LTE) service next year. By the way, in case you missed it, iPhone support on T-Mob. Get excited.
That aside, the company is also testing 4G HSPA+ service in our 1900 MHz spectrum. Some customers with unlocked iPhones recently saw evidence of those tests; clocking much faster data speeds at the Moscone West conference center in San Francisco. Finally, LTE trials are underway and this summer it'll begin using Release-10 equipment in these trials. Being firs to LTE-Advanced will almost certainly be a boon, and for the fourth place carrier, it could sure use that.