If your phone currently displays an "SOS" or "No Service" symbol, you're not alone: AT&T users are currently reporting a nationwide outage.
According to the website DownDetector, there was a spike in outage reports this morning, with over 32 thousand people reporting having no service around 4:30 a.m. Miami was among the top 10 cities with the most reports.
By mid-morning, AT&T later posted an update to their site saying most users had their service restored.
Some of our customers are experiencing wireless service interruptions this morning. Our network teams took immediate action and so far three-quarters of our network has been restored. We are working as quickly as possible to restore service to remaining customers.
While texting appears to still work, calls are not going through, so users should be aware they may not be able to dial 911.
Social media complaints were posted from Alaska, California, Texas and more. There is no information yet on what caused the outage, but sources confirmed to ABC News that multiple agencies, including the FBI, are investigating to determine whether it was the result of a cyber attack, a hack or a technical malfunction.
If you're still experiencing problems, ABC Action News Meteorologist Greg Dee will walk you through enabling Wi-Fi calling in the video below.
This is a developing story we will continue to monitor and update when we have more details.
