The "could not activate cellular data network" error means your iPhone won't be able to use the mobile data you're paying for ...

Some customers were complaining their phone was going into "SOS" mode, which Apple says means your phone is not connected to a cellular network. Verizon released a statement to NBC News: "We are aware ...

Many Verizon customers can’t hear you now. There appears to be a widespread outage of Verizon cell phone service, according to DownDetector, an online site that monitors websites and services. What ...

Even when you're in an area with good cellular coverage, your iPhone status might read SOS. Here's what to know. With more than a decade of experience, Nelson covers Apple and Google and writes about ...