Just a few weeks after their merger closed, T-Mobile and Sprint have begun to merge networks.

T-Mobile announced today that it's activated 2.5GHz 5G in parts of Philadelphia. This is 2.5GHz spectrum it got from Sprint, and these airwaves allow T-Mo to boost the depth and speeds of its 5G coverage.

There are currently a handful of T-Mobile phones that can access this 2.5GHz 5G. Those include the Samsung Galaxy S20 series, the Galaxy Note 10+ 5G, the OnePlus 7T Pro 5G McLaren, and the LG V60 ThinQ 5G. The OnePlus 8 5G that's launching at T-Mobile later this month will have access to the 2.5GHz 5G airwaves, too.

Below you can find a coverage map showing exactly where in Philadelphia you'll be able to find 2.5GHz 5G on T-Mobile.

T-Mobile also confirmed today that it plans to light up 2.5GHz 5G in New York City soon. This will mean that T-Mo customers in NYC will have access to 600MHz, 2.5GHz, and mmWave 5G. Here's what that coverage will look like when it goes live.

In addition to lighting up 2.5GHz 5G, T-Mobile says that it's 600MHz 5G is now live in a few more cities. Those include Detroit, St. Louis, and Columbus, OH.

There's some good news for Sprint customers today, too. T-Mobile says that beginning later this month, Sprint subscribers with a Galaxy S20 5G will be able to access T-Mobile's 600MHz 5G network, which covers more than 5,000 cities and towns across the country.

Plus, Sprint customers with compatible LTE phones can now roam on T-Mobile's LTE network. This should give them access to more than double the number of LTE cell sites than with Sprint alone.

In the weeks since the closing of T-Mobile and Sprint's merger, many customers have wondered when they'd begin to see the benefits of the deal. It turns out that that's starting now. And while