A wide T-Mobile network outage yesterday impacted voice and SMS traffic, creating a somewhat embarrassing moment for the newly combined T-Mobile and Sprint company. The problems began around mid-day yesterday and have apparently been resolved.

T-Mobile CEO Mike Sievert issued a statement late last evening saying the T-Mobile network outage began around mid-day yesterday, intermittently impacting customers. Sievert said the root of the problem was “[a]n IP traffic related issue that has created significant capacity issues in the network core throughout the day.”

Sievert reported that the issues had been resolved as of 1:03am EST this morning. The widespread nature of the outage got the attention and ire of FCC Chairman Ajit Pai, who issued a statement through Twitter, calling the outage unacceptable, and called for an FCC investigation. T-Mobile counted 86 million customers at the end of 2019.

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At one point yesterday, Downdetector reported several carriers and websites were having issues, leading some to wonder whether the U.S. was under some type of cyber or Distributed Denial-of-Service (DDoS) attack. T-Mobile confirmed the issue was an internal network issue and not any type of attack. Other carriers disputed Downdetector’s outage data, reporting no problems.

T-mobile network outage map
Source: Downdetector.com

“Sites such as Downdetector.com utilize limited crowdsourced data drawn from sample social posts which are often statistically insignificant or factually incorrect,” a Verizon spokeswoman told C-net.

The timing for T-Mobile is not ideal. Having just completed its acquisition of Sprint, T-Mobile has been touting how the combination will strengthen the wireless carrier and lead to better network coverage and more innovation. The T-Mobile Sprint deal was completed in April of this year.

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