A cellular outage in the US affected thousands of AT&T users, disrupting calls, text messages, and emergency services. The outage, which was caused by an incorrect process used during network expansion, was reported to have started around 4:00 a.m. ET and peaked at around 74,000 reported incidents at 8:30 a.m. ET. AT&T stated that service was restored to all affected customers shortly after 3 p.m. ET. The incident also affected users of Verizon and T-Mobile, although to a lesser extent.