T-Mobile & LTE
Frankly, I'm not quite sure why the operator needs to rush into LTE right now. It has High-Speed Packet Access Plus (HSPA+) upgrades underway, and it seems that the 3G technology will keep pace with early LTE deployments in the download speed race for a while in the US. (See T-Mobile's HSPA+ Rivals Clearwire, US LTE Speeds.)
As long as the download speeds are acceptable, I see T-Mobile as much more likely to compete on 3G plan prices and devices. Sprint Corp. (NYSE: S) has already imposed a $10 monthly additional charge to use its "4G" phones, and Verizon has suggested that customers will pay a premium for LTE, so there's an opportunity there. (See Verizon's LTE: How Much More $$ Than 3G?) Like AT&T Inc. (NYSE: T), T-Mobile is probably also betting that HSPA+ devices will be cooler than early LTE smartphones. This is because 3G is a mature technology and vendors are likely to have fewer problems with things like chip availability and battery life.
Make no mistake, LTE in the US will eventually supplant 3G as the preferred mobile broadband pipe. T-Mobile -- and to a lesser extent, AT&T -- are just gambling that it will take longer than Verizon might expect. Given how long it actually took for 3G devices that people wanted to arrive in the US, they might be making a good bet.
— Dan Jones, Site Editor, Light Reading Mobile