T-Mobile to roll out its LTE network in 2013?
This is a very unconfirmed piece of information, so treat it as such, but it definitely makes sense, since Verizon already has a functioning LTE network, AT&T is set to offer one as soon as the summer, while Sprint supports WiMAX, leaving T-Mo as the only major US carrier, which doesn't offer what most people perceive as a "true 4G network".
A report has claimed that LTE is not to displace HSPA+ in most places over the next five years ( which is not necessarily true for the USA), but it's a matter of personal opinion whether this simply means that HSPA+ can complement rather than compete with LTE, since there is virtually an unanimous agreement backed with facts that LTE is way faster than HSPA+.
Anyway, T-Mobile is the fourth-largest US carrier, and do you think it can move forward if it sticks with its HSPA+ network for the foreseeable future?
source: T-Mo News