AT&T nationwide cell service outage affected 250 million customers

AT&T experienced a nationwide cell service outage, affecting around 250 million customers. The issue, which began early on Thursday, prevented calls, including to 911. AT&T confirmed the outage was not due to a cyber attack but resulted from an incorrect process during network expansion. The company restored its entire network by 3pm ET. Emergency services issued warnings, and companies provided workarounds.