iPhone Messaging via Satellite

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When Apple introduced the Emergency SOS via satellite feature 2 years ago, I wrote it off as something of an intriguing novelty. An essential service for extreme sports enthusiasts, long-distance hikers, and the more remote valleys of the American West, for sure, but not top-of-mind for a writer/photographer living in the greater New York Metro area.

Last weekend, though, I happened to step off the grid during a hike in the Adirondacks and was surprised to see the cellular signal bars replaced by a satellite icon, for the first time ever.

Turns out that with the new iPhone OS 18 update, Apple has added limited text messaging to the satellite access. When you lose cell and wi-fi coverage, your iPhone may suggest satellite transmissions as a texting alternative.

Suddenly, the satellite connection seems much less like a novelty and much more relevant to suburban photographers like me who wandered out too far into the woods.

Or anyone in the aftermath of a natural disaster, with no cell service.

Unlike the SOS feature, which sends an alert directly to emergency services, text messaging via satellite is to contact friends and family. A way to let them know where and how you are. Peace of mind stuff.

It’s not a replacement for cell and wi-fi service, mind you, just a backup alternative. Connecting requires a clear view of the sky and message transmissions can be slow. You can’t send photos or videos, and because it uses cellular services from the satellite downlink to deliver your message, there may be character limits or carrier restrictions to consider.

Here is what you need to know.