Skip to main content

T-Mobile goes down: What caused Monday’s outage

Thousands of T-Mobile subscribers reported outages across the United States on Monday afternoon as a routing issue knocked out service for huge swaths of the country.

Around noon Pacific time on Monday, Down Detector showed almost 90,000 reports of a T-Mobile outage affecting most major U.S. cities. Nearly 70% of users were reporting they had lost a signal and Down Detector’s outage map revealed the reports were spread across the country.

In a note on the company’s blog Monday afternoon, CEO Mike Sievert wrote: “This is an IP traffic-related issue that has created significant capacity issues in the network core throughout the day.” He also noted that data services were still up and running.

A later tweet by the company’s T-Mobile Help Twitter account said a “widespread routing issue” was causing voice and texting problems.

The outage lasted for several hours through the afternoon, with services finally coming back online by 9:30 p.m. PT on Monday, according to a T-Mobile spokesperson.

“Thank you for your patience as we fixed the issues,” T-Mobile’s President of Technology Neville Ray said. “We sincerely apologize for any and all inconveniences.”

Digital Trends has reached out to T-Mobile again to ask how many people were affected in total. We will update the story when we hear back.

Users had flocked to social media as the outage dragged on, with some claiming a DDoS attack was responsible. However, Matthew Prince , CEO of website security comapny Cloudflare, dismissed the rumors, saying his company saw no signs of a coordinated attack.

His company’s findings showed no spike in traffic to major internet services, Prince wrote on Twitter.

“Our team knows the network operators at nearly all the other major internet services and platforms, and none of them are reporting anything anomalous,” Prince continued. “Don’t worry, this is one thing that does not need to get added to the list of craziness that has been 2020.”

Down Detector users also reported issues at AT&T, but a company spokesperson told Digital Trends that the network was still running as normal. More than 5,000 users also reported issues at Verizon at the outage’s peak, but a Verizon spokesperson said the network was unaffected and that reports may have been coming from Verizon customers who were trying to call T-Mobile users and encountering an error.

Want more news, reviews, guides, and features from Digital Trends? Follow us on Apple NewsGoogle News, and Flipboard.

Editors' Recommendations

Maya Shwayder
I'm a multimedia journalist currently based in New England. I previously worked for DW News/Deutsche Welle as an anchor and…
T-Mobile still has the fastest 5G, but its rivals are catching up
T-Mobile smartphone.

For most of 2023, we’ve seen median 5G speeds among the big three carriers remain fairly stable, leading us to believe that things were beginning to reach a plateau. However, it now seems that this may only be true at the very top end of the 5G speed race.

Today, Ookla released its latest market research on 5G speeds for the third quarter of 2023, and it’s an interesting mix of surprising and not-so-surprising developments in the 5G market.

Read more
T-Mobile’s huge lead in 5G speeds isn’t going anywhere
OnePlus Nord N300 5G speed test.

It looks like 2023 could shape up to be the year that we reach "peak 5G." While T-Mobile still enjoys a very healthy lead over its rivals, we're no longer seeing significant speed increases from any of the big three U.S. carriers.

That's not surprising for T-Mobile and Verizon since they now cover more than two-thirds of the U.S. population. AT&T still has room to grow, yet it seems to be in a resting phase rather than an expansion one right now.

Read more
The 5G speed race is over and T-Mobile has won
Cell phone tower shooting off pink beams with a 5G logo next to it.

Every few months, a new market analysis comes out comparing the top 5G performance and availability among U.S. carriers. Each time, we wonder if the latest report will finally topple T-Mobile, which has held a commanding lead over rivals AT&T and Verizon for years. Yet, with each new report, T-Mobile pulls farther ahead while AT&T and Verizon are left in the dust.

With that in mind, Opensignal's latest 5G Experience Report doesn't bring too many surprises, at least in broad strokes. T-Mobile continues to deliver 5G download speeds that are more than twice those of any other carrier and more than twice the 5G availability. This means you won't just get faster performance on T-Mobile's 5G network, but you're more likely to be able to find a 5G connection.

Read more