T-Mobile is aggressively pushing its network enhancements to appeal to 4G users. The carrier has doubled the speed over its 4G HSPA+ wireless network up to a theoretical 42 Mbps. The upgrade adds 56 new metro areas to the carrier's coverage map including Raleigh, Cary, Greensboro, Winston-Salem, Charlotte and Asheville for those of us in N.C..
Currently, T-Mo's phones peak at 21 Mbps, not capable of taking full advantage of 42 Mbps, but it does have the Rocket - a USB 4G modem. the carrier does plan to bring 42 Mbps smartphones to consumers later this year.
It would appear T-Mobile is still swinging hard in the dogfight among carriers including AT&T despite the proposed merger.
You can read the full press release on the jump.