An outage of AT&T’s cellular network is causing disruptions for users across the United States. The issue, which began early this morning, has left many unable to make calls, send texts, or access data services on their phones.

Reports of the outage first started pouring in from major cities like New York, Los Angeles, and Chicago. Users have taken to social media to express their frustration and confusion over the situation. Some have reported that their businesses are being impacted, while others are concerned about not being able to reach loved ones in case of an emergency.

AT&T has acknowledged the problem and is working to resolve it as quickly as possible. In the meantime, affected users are encouraged to stay patient and to check for updates on the company’s official website and social media channels.

It is not yet clear what caused the outage or when full service will be restored. In the meantime, users are advised to use alternative means of communication if possible.