# T-Mobile nationwide network outage

> Live situation record from CLSTR: https://clstr.news/situations/t-mobile-nationwide-network-outage
> Updated: 2026-08-17T09:05:16.000Z. Sources: 2. Developments: 2.

On July 27, 2026, a nationwide T-Mobile network outage began around 4:30 p.m. ET, affecting hundreds of thousands of users across major U.S. cities including New York, Los Angeles, and Chicago. The disruption caused many devices to enter “SOS” or “SOS Only” mode, preventing normal calls while allowing emergency services. 

Reports on Downdetector exceeded 140,000 during the event. Some users also reported failures with the T-Satellite service, which utilizes SpaceX’s Starlink satellites. T-Mobile engineers worked to resolve the issue, and the company announced that service had been fully restored by late evening, issuing an apology for the disruption. The specific technical cause of the outage was not disclosed.

## Timeline

### 2026-08-17: T-Mobile reports no widespread network outages

T-Mobile is not reporting any widespread nationwide outages as of October 26, 2023, though localized connectivity issues may still affect specific users or services.

2 sources. https://clstr.news/cluster/t-mobile-reports-no-widespread-network-outages

### 2026-07-27: T-Mobile Network Outage Disrupts Service for Hundreds of Thousands Across the US

T‑Mobile’s July 27 2026 outage affected over 140 000 U.S. users, triggered SOS mode on phones, and was fully restored by night; some could not connect to its Starlink‑based T‑Satellite service.

7 sources. https://clstr.news/cluster/t-mobile-outage-disrupts-service-for-tens-of-thousands-of-us-customers

---
Cite as: T-Mobile nationwide network outage. CLSTR, https://clstr.news/situations/t-mobile-nationwide-network-outage