Why does my iPhone say SOS? What it means – and how to set up Wi-Fi calling

If you’re an iPhone owner and currently live in a major US city, you may see the words “SOS Only” on your status bar. You’re probably not alone, as as I write this the US is recovering from a major telephone outage that has left tens of thousands of people without service.

This outage affected one of the US’s largest wireless carriers: AT&T (it’s unclear whether another service was offline or simply receiving reports, as T-Mobile customers, for example, couldn’t contact anyone on ATT). Mobile companies are working to restore service, but it may take some time before everything is 100 percent again. Most smartphones will remain in the dark during this period. However, iPhones have a special SOS Only mode, which allows them to call emergency services if the network goes down unceremoniously.

Only SOS for iPhone

(Image credit: Future)

Fortunately, you don’t have to wait for the network to come back online to make non-emergency calls, as iPhones support Wi-Fi calling. It’s a handy feature that, as the name suggests, lets you call friends or family over an internet connection instead of a cellular connection.

Set up Wi-Fi calling