T-Mobile customers across the U.S. mobile data appears to be unaffected.
We tested a T-Mobile phone in the office. Both calls to and from the T-Mobile phone failed. When we tried to send a message, it said the message could not be sent. The outage started around 3pm PT (6pm ET).
Users took to social media to complain about the outage. It's not clear how many customers are affected, but users across the U.S.
A spokesperson for T-Mobile did not reply, but a T-Mobile support account said the cell giant has "engaged our engineers and are working on a resolution."
T-Mobile is the third largest cell carrier after Verizon (which owns TechCrunch) and AT & T. The company had $ 26.5 billion merger with Sprint approved by the Federal Communications Commission, despite a stream of state attorneys general lining up to block the deal.