AT&T services are back up and running after an outage on Saturday.
AT&T customers expressed frustration on social media, some saying they weren't able to make calls.
A spokesman for the company says the outage was caused by a "hardware issue" and the service has been restored.
He didn't release information on how many customers were affected but describe the outage as "brief."
This comes after an outage on Wednesday prevented customers from making 911 calls across the nation. The FCC has opened an investigation into that incident.
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