T-Mobile (United States): 4G and 5G bands
T-Mobile (United States) runs 4G on B2, B4, B12, B66, B71, B41; B12, B71 are the coverage layer. 5G bands: n71, n41, n25, n258, n260, n261, n77, n66, n2. 5G SA: live (2020); RedCap: commercial; 3G: switched off (2022-07-01); 2G: switched off (2026-08-03).
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 |
| B12 | 700 Lower SMH (a) | FDD | 699–716 | 729–746 | coverage layer | cross-checked12 |
| B66 | 1700/2100 Extended AWS | FDD | 1710–1780 | 2110–2200 | capacity layer | cross-checked12 |
| B71 | 600 (US) | FDD | 663–698 | 617–652 | coverage layer | cross-checked12 |
| B41 | 2500 BRS | TDD | 2496–2690 | 2496–2690 | capacity layer | cross-checked23 |
| B5 | 850 Cellular | FDD | 824–849 | 869–894 | coverage layer | single source2 |
| B25 | 1900 Extended PCS | FDD | 1850–1915 | 1930–1995 | capacity layer | single source3 |
| n71 | 600 (US) | FDD | 663–698 | 617–652 | coverage layer | cross-checked24 |
| n41 | 2500 BRS | TDD | 2496–2690 | 2496–2690 | capacity layer | cross-checked24 |
| n25 | 1900 Extended PCS | FDD | 1850–1915 | 1930–1995 | capacity layer | cross-checked24 |
| n258 | 26 GHz mmWave | TDD | 24250–27500 | 24250–27500 | capacity layer | single source2 |
| n260 | 39 GHz mmWave | TDD | 37000–40000 | 37000–40000 | capacity layer | single source2 |
| n261 | 28 GHz mmWave | TDD | 27500–28350 | 27500–28350 | capacity layer | single source2 |
| n77 | 3700 C-Band | TDD | 3300–4200 | 3300–4200 | capacity layer | single source2 |
| n66 | 1700/2100 Extended AWS | FDD | 1710–1780 | 2110–2200 | capacity layer | single source2 |
| n2 | 1900 PCS | FDD | 1850–1910 | 1930–1990 | 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 (2020)5 |
|---|---|
| RedCap | Commercial6 |
| LTE-M | Commercial7 |
| NB-IoT | Commercial7 |
| 2G | Switched off (2026-08-03)8 |
| 3G | Switched off (2022-07-01)9 |
Our dongles on this network
Supports B2, B4, B12 (coverage layer). B66 only partly (device has subset B4). Missing the operator’s main band B66, B71. Missing B41.
Supports B2, B4, B12 (coverage layer). B66 only partly (device has subset B4). Missing the operator’s main band B66, B71. Missing B41.
Supports B41. Missing the operator’s main band B2, B12, B66, B71. Missing B4.
5G: 5G RedCap usable (n41)
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
- B AT&T launches more capable 5G nationwide Phone Scoop · 2025-10-08
- B Viewpoint: 5G RedCap – accelerating the next phase of cellular IoT GSA · 2026-04
- B Mobile IoT network launches (Nov 2025) GSMA · 2025-11
- B T-Mobile will shut down 2G GSM on August 3, 2026 Android Authority · 2026-07-02
- B T-Mobile to finally turn off 2G Light Reading · 2023-02
