AT&T (United States): 4G and 5G bands
AT&T (United States) runs 4G on B2, B4, B5, B12, B17, B30, B66; B5, B12, B17 are the coverage layer. 5G bands: n5, n77, n260, n2, n66. 5G SA: live (2025-10); RedCap: commercial (2025-07); 3G: switched off (2022); 2G: switched off (2017).
Check your module in the US
Results cover the 3 networks here; the home page checks every country at once.
Bands in detail
| Band | Name | Duplex | Uplink MHz | Downlink MHz | Layer | Checked |
|---|---|---|---|---|---|---|
| B2 | 1900 PCS | FDD | 1850–1910 | 1930–1990 | capacity layer | cross-checked12 |
| B4 | 1700/2100 AWS-1 | FDD | 1710–1755 | 2110–2155 | capacity layer | cross-checked12 |
| B5 | 850 Cellular | FDD | 824–849 | 869–894 | coverage layer | cross-checked12 |
| B12 | 700 Lower SMH (a) | FDD | 699–716 | 729–746 | coverage layer | cross-checked12 |
| B17 | 700 Lower SMH (b) | FDD | 704–716 | 734–746 | coverage layer | cross-checked12 |
| B30 | 2300 WCS | FDD | 2305–2315 | 2350–2360 | capacity layer | cross-checked23 |
| B66 | 1700/2100 Extended AWS | FDD | 1710–1780 | 2110–2200 | capacity layer | cross-checked23 |
| B14 | 700 Upper SMH (FirstNet) | FDD | 788–798 | 758–768 | coverage layer | single source3 |
| B29 | 700 Lower SMH (d) SDL | SDL | — | 717–728 | coverage layer | single source3 |
| n5 | 850 Cellular | FDD | 824–849 | 869–894 | coverage layer | cross-checked24 |
| n77 | 3700 C-Band | TDD | 3300–4200 | 3300–4200 | capacity layer | cross-checked24 |
| n260 | 39 GHz mmWave | TDD | 37000–40000 | 37000–40000 | capacity layer | cross-checked24 |
| n2 | 1900 PCS | FDD | 1850–1910 | 1930–1990 | capacity layer | single source2 |
| n66 | 1700/2100 Extended AWS | FDD | 1710–1780 | 2110–2200 | capacity layer | single source2 |
Frequencies are from the 3GPP specifications. “Single source” means only one community source lists the band; it is shown but not scored.
Network status
| 5G SA | Live (2025-10)5 |
|---|---|
| RedCap | Commercial (2025-07)5 |
| LTE-M | Commercial6 |
| NB-IoT | Shut down (2025-Q1)7 |
| 2G | Switched off (2017)8 |
| 3G | Switched off (2022)9 |
Our dongles on this network
Supports B2, B4, B5 (coverage layer), B12 (coverage layer), B17 (coverage layer). B66 only partly (device has subset B4). Missing B30.
Supports B2, B4, B5 (coverage layer), B12 (coverage layer), B17 (coverage layer). B66 only partly (device has subset B4). Missing B30.
Supports B5 (coverage layer). Missing the operator’s main band B2, B4, B12, B17. Missing B30, B66.
5G: 5G RedCap usable (n5)
Sources
- C US country guide (sources: frequencycheck.com and others) Hyper Nexus · 2026-09
- C Frequency checker · USA Kimovil · 2026-09-30
- C LTE frequency bands Wikipedia · 2026-09-30
- C North American networks CellMapper Wiki · 2026-09-30
- A 5G Standalone goes nationwide (RedCap also nationwide) AT&T · 2025-10-08
- B Mobile IoT network launches (Nov 2025) GSMA · 2025-11
- B AT&T to discontinue NB-IoT, but T-Mobile and Verizon keep the faith Light Reading · 2024-11-21
- B T-Mobile to finally turn off 2G Light Reading · 2023-02
- B China Mobile 2G licence ends 2025-12-31; Verizon 3G closed 2022-12-31 Jiemian News (界面新闻) · 2026-04
