On the heels of its merger with Sprint, T-Mobile is wasting no time putting the former company’s spectrum to use improving its own network.

With carriers around the world pushing to deploy 5G networks, T-Mobile’s acquisition of Sprint puts it in an enviable spot moving forward. 5G comes in three flavors: low-band, mid-band and high-band, or mmWave. mmWave offers gigabit speeds, but has extremely limited range and penetration, while low-band offers excellent range and penetration, but only marginally better speeds than 4G LTE.

Mid-range spectrum is considered the sweet spot, offering a compromise between fast speeds and good coverage. Sprint had a wealth of mid-range spectrum, and T-Mobile is already putting it to good use. The company had previously announced the rollout of 2.5Ghz 5G in Philadelphia, using Sprint’s spectrum, and now it is going even further.

According to the company’s website, T-Mobile is bringing low, mid and high-band 5G to New York City. It is also bringing its low-band 5G to Detroit, St. Louis and Columbus. At the same time, Sprint customers are now able to roam on T-Mobile’s network, doubling the amount of LTE sites Sprint customers can access.

The announcements are welcome news to T-Mobile and Sprint subscribers and reaffirm that the New T-Mobile is the carrier to beat.