User-reported issues indicated a major problem at Verizon, with folks noting what appeared to be widespread service outages.

User-reported issues spiked at Downdetector around midday, Eastern time on Wednesday. (Disclosure: Downdetector is owned by Ziff Davis, the same parent company as Mashable.)

"Verizon is currently facing a massive service outage with a total of 235,373 reports recorded over the last 24 hours," noted Downdetector.

Verizon's support page on X wrote that it was aware users were having issues and that it was working on fixing the problem.

"We are aware of an issue impacting wireless voice and data services for some customers," the account posted. "Our engineers are engaged and are working to identify and solve the issue quickly. We understand how important reliable connectivity is and apologize for the inconvenience."

Some users on social media indicated their phones were in SOS mode.

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What does SOS mean on your phone?

In short, when you see SOS on your phone, it means you're not connected to a cellular network. "If you see SOS or 'SOS only' in the status bar, your device isn't connected to your cellular network, but you can still make emergency calls through other carrier networks," reads an Apple support page on the feature.

Are T-Mobile, AT&T having issues, too?

Around the same time user-reported issues for Verizon spiked, the same trend occurred for T-Mobile and AT&T. Both services experienced spikes in reports on Downdetector. That does not mean, however, that the carriers were necessarily experiencing the same issue confirmed by Verizon. Downdector tracks user-reported issues, which can be made in error or for an entirely different problem.

This story is developing and will be updated as necessary...