T-Mobile today lit up its 5G network across the U.S. covering more than 200 million people and more than 5,000 cities and towns.

T-Mobile says that if the merger with Sprint closes, the New T-Mobile will be able to build on this foundation to "deliver transformational broad and deep 5G for All."

T-Mobile doesn’t offer specifics on what kind of speeds you’ll see on the new network, and the actual improvements will vary a lot by location. “In some places, 600 MHz 5G will be a lot faster than LTE. In others, customers won’t see as much difference,” T-Mobile says.

Two new 5G smartphones, the exclusive OnePlus 7T Pro 5G McLaren ($899.99) and the Samsung Galaxy Note10+ 5G ($1299.99), are available for pre-order today at www.t-mobile.com/devices/5g-phones and in T-Mobile stores on December 6. Both 5G phones tap into the Un-carrier’s 600 MHz 5G network where available and T-Mobile’s LTE network elsewhere. Plus, both are ready to use Sprint’s 5G spectrum (2.5 GHz) when available from the New T-Mobile if the merger closes. To celebrate the launch, T-Mobile's customers can get the OnePlus 7T Pro 5G McLaren for FREE with 24 bill credits when they switch to T-Mobile and trade in an eligible phone … or, get a Note10+ 5G for FREE with 24 bill credits when they buy another and add a line (two for new customers).

T-Mobile says its 5G network covers more than 60% of the population across more than 1 million square miles, much of that in rural America. It covers 200 million people and more than 5,000 towns.

In adition, T-Mobile’s 5G access costs the same as LTE at T-Mobile.

All of the major US carriers have been racing to launch 5G this year. The next notable deployment is supposed to come from AT&T, which plans to launch its own low-band 5G this month, albeit only in five cities.