You’ve probably seen satellite phones in movies, where characters make calls from the South Pole for a hefty $100 a minute. Well, times have changed. Technology has become smaller, cheaper, and more efficient.
In the aftermath of hurricanes causing destruction far inland in the U.S., people discovered that traditional cell service often fails due to power outages or damaged cell towers. As a result, newer smartphones can now send text messages and make emergency calls even when no functioning cell towers are nearby.
With iOS 18, Apple introduced a satellite messaging feature that enables users to send and receive iMessages and SMS messages via satellite. This capability proved life-saving in areas like Asheville, NC. The feature is available on iPhone 14 models and newer.
To send a satellite message, you need to be outdoors, away from obstructions such as buildings and trees. Simply point your iPhone at the sky—just like in the movies—and follow the onscreen prompts to align with a satellite. Once connected, you can send a message to anyone. The process takes time, up to 30 seconds for the entire message to transmit. Receiving messages is more limited; you can only receive them from your emergency contacts or members of your Family Sharing group.
While the satellite texting service is a remarkable feature, Apple cautions that it isn’t designed to replace traditional communication methods and should not be relied upon as a primary emergency lifeline. However, the Satellite SOS feature allows users to connect with emergency services, share their location, and provide critical details during emergencies.
This innovative technology has been years in the making. Companies like Starlink are pioneering low-earth-orbit satellites that capture phone signals and relay them back to Earth while moving at thousands of miles per hour. For its satellite service, Apple partners with Globalstar, while T-Mobile has joined forces with SpaceX/Starlink. Full functionality for these systems is still in development.
For more information about using satellite messaging on your iPhone, visit Apple’s support page: support.apple.com/en-us/120930.
Google also offers similar features on some of its devices.
Adapted from an article by Adam C. Estes, originally published in Vox on October 3, 2024.