CNN reports:
AT&T is reimbursing customers for the nearly 12-hour network outage on Thursday, the company announced in a news release. The mobile network will issue a $5 credit to "potentially impacted" AT&T Wireless customers, which it says is the "average cost of a full day of service."

The credit will be applied automatically "within 2 bill cycles," according to an announcement at the URL att.com/makeitright. "We recognize the frustration this outage has caused and know we let many of our customers down."

In a much smaller font, they note that the credit "does not apply to AT&T Business, AT&T Prepaid or Cricket.

More from CNN:
AT&T had encountered sporadic service interruptions in the days leading up to the outage, including a temporary 911 outage in some parts of the southeast. While regional disruptions to wireless service happen occasionally, prolonged nationwide outages are rare. The Federal Communications Commission confirmed Thursday it was investigating the incident...

Several hours after service was restored, AT&T released an update stating the outage seemed to be the result of an internal issue, not a cybersecurity threat. "Based on our initial review, we believe that today's outage was caused by the application and execution of an incorrect process used as we were expanding our network," the company said.

On Saturday, AT&T reiterated it was taking steps "to prevent this from happening again in the future," but did not elaborate.