Fwoomph. That's the sound of your T-Mobile connection going into turbo mode, similar to the same effect that happens when Doc Brown gets the car to 1.21 gigawatts (at least, we only hope it's that cool).

According to AllThingsD, T-Mobile has flipped the switch on faster LTE service in North Dallas, with plans to boost up its faster LTE connectivity to 90 percent of the top 25 markets in the United States. As for when, the company wasn't clear on how long the rollout might take. Unlike its competitors, however, the improved speeds should work for all LTE phones on the carrier's network  no fancier hardware is required to benefit from the boost.

T-Mobile's move combines the carrier's existing LTE connectivity with new spectrum that T-Mobile received as a result of its acquisition of MetroPCS. In doing so, reports Phonenews, the new "bonded spectrum" allows for what's known as a "20x20" network, or LTE connectivity that uses channels that are 20 Mhz wide each.

Most smartphone owners likely care more about speeds than the science behind them, we wager. To that point, Phonenews notes that the new bonded LTE network is seeing peak speed averaging around 13.25 MB/s down and 3.6 MB/s up.

T-Mobile's move mimics the plans of the company's mobile competitors, which are also working to boost the speeds of their own networks as quickly as they can. Verizon's integration of its AWS spectrum has allowed the company to both boost users' peak speeds and allow for more connections at generally faster speeds, and it has rolled this fancier network out in some of the nation's major cities: New York, Chicago, and Washington D.C. (to name a few). The caveat, however, is that only around 15 percent of the smartphones that can operate on Verizon's network can enjoy the speedier connection.

AT&T continues to work on its "Project VIP" improvements  short for Project Velocity IP, not "very important person." As part of its move to boost its networks, AT&T is expected to deploy more than 40,000 small cells to locations around the country (including shopping malls, businesses, and neighborhoods) in an effort to boost coverage for customers "that previously had a less-than-desirable experience," as the company describes on its related webpage.

Additionally, the company has been working to "cannibalize" existing spectrum it owns  that traditionally home to 2G and 3G connectivity  to boost its LTE network in major markets.

As for Sprint, that one's easy  Sprint Spark. The company recently started rolling out this speedier wireless service, built on the back of the spectrum it acquired from Clearwire, in five major cities at the end of October. The company plans to grow the service to even more cities over the next few years (go figure) and, presumably, more devices as well. Currently, only a handful of the Sprint-friendly smartphones even support Spark's alleged 67.5 MB/s downlink speeds as-is.

Further Reading

Mobile Phone Reviews