Verizon has fully resolved a network disruption that affected thousands of customers across the United States. The Federal Communications Commission (FCC) announced it was launching an investigation into the outage after numerous users reported service interruptions.
In a statement released later Monday, Verizon confirmed that service levels had returned to normal.
Cities such as Chicago and Seattle experienced significant impacts, with some iPhone users reporting that their devices were stuck in “SOS” mode.
Data from the outage tracking website Downdetector.com indicated that the disruption began around 9:30 a.m. ET, with over 28,842 reports logged by 5:02 p.m. ET. The highest reported areas included Minneapolis, Phoenix, Omaha, and Denver.
Earlier in the day, Verizon Communications stated that engineers were addressing the network issue, and service restoration was underway.
The company issued an apology for the inconvenience caused but did not elaborate on the cause of the outage.
Reports peaked at approximately 105,000 around 11:19 a.m. ET, according to Downdetector.com.
The FCC indicated it was working to assess the cause and scope of the service disruptions.
Additionally, some Verizon users took to X, a social media platform, to express their frustration with their phones being in “SOS” mode. According to Apple’s website, “SOS” indicates that iPhones are unable to connect to a cellular network but can still make emergency calls through other carriers.
While Downdetector.com also noted 448 incident reports from AT&T users by 5:15 p.m. ET, AT&T stated there was no nationwide outage and that its network was functioning normally.