The new Apple Watch Ultra 3 offers the option to keep in touch via a satellite when there is no mobile coverage. This is particularly useful for walks in remote areas or during camping trips in nature.
Satellite communication is not intended exclusively for emergencies. The connectivity via satellite comprises three functions: SOS emergency notifications, messages and search my, all possible via satellite.
Advanced radio and antenna system
To make satellite communication possible, the radio of the Apple Watch Ultra 3 has been improved for a larger frequency range. In addition, Apple has developed a new antenna that doubles the signal strength. Thanks to these innovations, the Apple Watch Ultra 3 can communicate with satellites that operate more than 1200 kilometers above the earth and move at speeds of 24,000 km/h.
For satellite communication in the iPhone and SOS emergency call functions, Apple mainly uses the GlobalStar satellite network, a constellation of Low-Earth Orbit (Leo) satellites that are specially optimized for mobile services and emergency reports. Globalstar has reserved the majority of their network capacity for Apple users. Apple has funded ground stations itself and continues to invest in the Globalstar network.
From 2025, Apple also supports the newest iPhones (from iOS 18.3) to the Starlink network of SpaceX, so that SMS messages via satellite are possible on selected models in certain regions.
How does satellite communication work?
If you are in a remote place without WiFi and mobile connection, you can send the emergency services a message and share your location. It is even possible to automatically send an emergency notification in an emergency.
When you are in a place without reach, satellite connection is automatically offered as an option. You will also receive instructions on the screen of connecting assistant to engage the satellite functions.
After the activation of the Apple Watch Ultra 3, all satellite functions were included free of charge for two years. From the SOS emergency notification via satellite you can always continue to use for free, after two years you need a subscription for the other functions.
Find my position via satellite
Also requires a multisim subscription
When you look for my use via satellite, you can send your location every 15 minutes to contact persons that you have put in the search my app in advance.
Use the search my position via satellite
- As soon as you are out of reach, you open the search my app.
- Select Share location via satellite.
- Your Apple Watch will automatically update your location every 15 minutes to designated contacts.
- Keep the watch positioned in a natural way while the assistant provides a stable satellite connection.
Messages via satellite
Also requires a multisim subscription
In addition, with messages via satellite text messages, emoji and tapbacks you can drive to your family, friends and everyone with whom you have been in contact for the past 30 days. You can also text via satellite, and all messages are encrypted from start to finish.
Using messages via satellite
- When you are outside the network, wait until the Satellite Connection Assistant gives you a signal.
- Select Messages via satellite.
- Set up your text and send it, you can use iMessage, SMS, emojis and tapbacks.
- Follow the instructions of the assistant to complete the shipment.
SOS emergency notification via satellite
Thanks to the SOS emergency notification function via satellite on Apple Watch Ultra 3 you can send a message to the emergency services with a few taps and warn your SOS contact persons.
However, this is automatic, for example, if you have had a serious car accident in a remote place or have fallen hard and no longer responds. The Apple Watch Ultra 3 can then automatically share information about your situation and your location with the emergency services and your SOS contact persons.
NB! To be able to send the messages automatically, the Apple Watch must have a clear view of a satellite.
How to send an SOS emergency notification via satellite
- Make sure you are outside, away from obstacles, with a clear view of the air.
- Wait until the prompt from the Satellite Connection Assistant appears.
- Tap emergency sos on the screen.
- Follow the instructions on the screen to align with the satellite.
- Your Apple Watch shares your location and emergency data with services and informs your chosen contacts.
Subscription Satellite function
After activation of an Apple Watch Ultra 3, SOS emergency notification, messages via satellite and search for my free of charge via satellite for free, after which a subscription is required. The costs are not yet known.
SOS emergency notification via satellite is included at Apple Watch Ultra 3 without a mobile subscription. If you have a Multisim subscription, you can also share your location via Search Mine and use messages via satellite.