Large swathes of the U.S. were hit by a cellular outage early on Thursday, with thousands of users reporting disruptions with the services offered by telecom firms including AT&T .
More than 32,000 outage incidents were reported with AT&T's service around 4:30 a.m.
Impacted cities included San Francisco, Houston and Chicago, the website showed.
Users of Verizon , T-Mobile and UScellular also reported issues with the telecom firms' services, according to Downdetector.
A post on social media platform X from the San Francisco Fire Department said the outage was impacting people's ability to reach emergency services by dialing 911.
Persons:
UScellular
Organizations:
Verizon, San Francisco Fire Department
Locations:
San Francisco, Houston, Chicago