AT&T owns its nationwide 5G and LTE network, which also carries FirstNet for first responders. Its fiber network reached 38.6M locations in June 2026, helped by the Lumen consumer fiber business bought in February 2026. AT&T plans to exit most of its copper network by the end of 2029.

Fixed network
- Network used
- AT&T
- Technologies
- Fiber (AT&T Fiber)Copper (legacy)
- Subscribers
- 12.87M· June 2026, consumer and business fiber
- Coverage
- United States
Fiber reached 38.6M locations in June 2026. Targets: over 40M by the end of 2026 and more than 60M by the end of 2030.

Mobile network
- Network used
- AT&T
- Technologies
- 5G4G LTE
- Subscribers
- 74.9M· June 2026, postpaid phones
- Coverage
- Nationwide
In December 2025, 5G covered more than 322M people in the U.S. and LTE more than 337M.