BELLEVUE, Wash.—T-Mobile, the mobile subsidiary of the German telecom company Deutsche Telekom that now includes Sprint, announced that 121 more areas across the United States have gone live with 5G wireless technology.

Included in the new communities is the city of Ypsilanti and surrounding areas.

5G delivers peak speeds of up to a gigabit per second, and average download speeds around 300 megabits per second for 5G-capable devices.

To celebrate, T-Mobile is giving away $100,000 in $5,000 increments (5G’s) on Twitter over the next several months, with a #5Gsfor5G sweepstakes. To enter, fans must tag @TMobile and use #5Gsfor5G and #Contest. For full rules and how to enter click here.

T-Mobile says it has the first and largest nationwide 5G network, covering more than 250 million people across 1.3 million square miles, which the company says is bigger than AT&T and Verizon’s 5G networks combined. The company also says its choice of the 600 megahertz and 2.5 gigahertz radio bands for 5G service means its signals can penetrate obstructions like walls and trees, unlike 5G networks using millimeter-wave spectrum.

For more information on T-Mobile’s network, visit www.t-mobile.com/coverage.