AT&T announced Tuesday that its 5G network is live in parts of a dozen cities. And it said its first 5G-compatible device — a mobile hotspot — will soon be in the hands of some customers.

It marks the Dallas-based carrier’s latest steps toward a nationwide rollout of the next-generation mobile network that’s expected to bring faster, more reliable cellphone service and support emerging tech like autonomous cars, virtual reality and widespread use of robotics in manufacturing.

AT&T’s mobile 5G network is live in four Texas cities: Dallas, Houston, San Antonio and Waco. It’s also in areas of Atlanta; Charlotte and Raleigh, N.C.; Indianapolis; Jacksonville, Fla.; Louisville, Ky.; Oklahoma City; and New Orleans.

In the first half of 2019, AT&T said it will go live with 5G in parts of seven more cities: Las Vegas; Los Angeles; Nashville, Tenn.; Orlando, Fla.; and San Diego, San Francisco and San Jose, Calif.