Apple Watch satellite messaging only goes into demo mode when iPhone battery is dead
My phone battery died but can’t send satellite message from my watch when I’m out hiking. It always just goes into demo mode.
Apple Watch Ultra 3, watchOS 26
Question marked as
If your Apple Watch Ultra battery is empty, the watch can not do anything.
In case your battery is still working, there are more things to check:
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- When your Apple Watch Ultra 3 or later detects that you’re outside of cellular and Wi-Fi coverage, a satellite icon at the top of your watch screen lets you know that satellite features are available at your location, including messages via satellite. Otherwise, you get a notification to Use Messages via Satellite when you open the Messages app.
- When you connect to satellite, you’ll also see the option to text emergency services using Emergency SOS via satellite and share your location using Find My via satellite (where these services are available).
- To send a message, just open the Messages app — you’ll be prompted to start accepting messages, if you haven't already, and your Apple Watch Ultra provides instructions to connect to a satellite to send a text.
- To send someone an iMessage, you need to have communicated with them through iMessage within the last 30 days. Before you go off the grid, make sure you've had recent iMessage conversations with anyone you might want to contact.
- If you can’t send an iMessage via satellite — for example, if the person who you are trying to text has an iPhone that doesn’t have iOS 18 or they have a non-Apple device, or if you haven't sent them an iMessage recently — you can use SMS messaging via satellite. To send and receive SMS via satellite, your paired iPhone must be powered on and connected to Wi-Fi or mobile, but your iPhone doesn’t need to be nearby.
- When you connect and start accepting messages via satellite, you'll receive any SMS messages that were sent from your emergency contact or members of your Family Sharing group before you started accepting messages via satellite. You won't receive iMessages until your emergency contact or family member returns to the conversation and taps Send via Satellite underneath their message bubble.
- Messages via satellite might take a little longer to send. In ideal conditions with a direct view of the sky and horizon, a message might take 30 seconds to send. It might take over a minute to send under trees with light or medium foliage — and you might not be able to connect to a satellite under heavy foliage or if you’re surrounded by other obstructions.
- Some Messages features aren’t supported when using a satellite connection. You can’t send or receive photos or videos, audio messages, stickers, or messages in a group message.
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copied from: Send Messages via satellite on your Apple Watch Ultra - Apple Support