T-Mobile service outage slams users across the U.S.

T-Mobile users across the U.S. reported major network outages on Monday night, leaving them unable to make calls, send texts or access the internet, according to an outage tracking website. 

The wireless carrier is working to restore service, which it says is operating at near-normal levels, in affected areas, including in major cities like Chicago, Los Angeles, Las Vegas, Phoenix, New York and Seattle. 

T-Mobile did not reveal how many users had been affected, but data from DownDetector, an outage tracker that relies on user-submitted data to generate service reports, shows customers lodged more than 83,000 complaints at the peak of the outage on Monday at 10 p.m. Eastern time. That number fell to roughly 9,000 by midnight.