Uploaded October 2025 | Updated September 2026, 1 week ago
Apple Watch Ultra 3 vs Garmin Fenix 8 Pro, which smartwatch does satellite messaging better out on the trail?
*Gear I'm Using Now:*
* inReach: hkgy.co/inreach
* Hiking App: hkgy.co/app
* Watch: hkgy.co/watch
* Shoes: hkgy.co/shoes
* Pack: hkgy.co/backpack
* Rescue Insurance: hkgy.co/insurance
*Full Hiking Gear List (What I Use Now - Tested & Not Sponsored):*
hikingguy.com/gear
*More Hiking Content*
* Website: hikingguy.com
* Patreon: patreon.com/c/hikingguy
* Monthly Hiking News (free): patreon.com/c/hikingguy
* Subscribe: youtube.com/c/Hikingguy
I tested the Apple Watch Ultra 3 and Garmin Fenix 8 Pro side by side on real hikes to see which one handles satellite messaging better when you're completely off the grid. Both watches can now send and receive messages without a phone or cell signal, but they work differently. The Apple Watch only switches to satellite when both your iPhone and watch are offline. If your phone connects to something like T-Mobile's Starlink network, that counts as online and the watch won't use satellite. The Garmin operates independently and doesn't rely on a phone at all. I compare coverage areas, ease of use, message delivery times, and whether these features are worth the cost over a dedicated device like an inReach.
00:00 Connection Limitations
01:37 How Connecting Works
05:52 Satellite Features
09:35 Reliability
11:20 Battery Drain
11:57 Cost & Coverage
13:38 Recommendations
---
*Disclaimer:*
Some of these links are affiliate links where I'll earn a small commission if you make a purchase at no additional cost to you. I only recommend gear I actually use and trust.
Apple Watch Ultra 3 vs Garmin Fenix 8 Pro, which smartwatch does satellite messaging better out on the trail?
*Gear I'm Using Now:*
* inReach: hkgy.co/inreach
* Hiking App: hkgy.co/app
* Watch: hkgy.co/watch
* Shoes: hkgy.co/shoes
* Pack: hkgy.co/backpack
* Rescue Insurance: hkgy.co/insurance
*Full Hiking Gear List (What I Use Now - Tested & Not Sponsored):*
hikingguy.com/gear
*More Hiking Content*
* Website: hikingguy.com
* Patreon: patreon.com/c/hikingguy
* Monthly Hiking News (free): patreon.com/c/hikingguy
* Subscribe: youtube.com/c/Hikingguy
I tested the Apple Watch Ultra 3 and Garmin Fenix 8 Pro side by side on real hikes to see which one handles satellite messaging better when you're completely off the grid. Both watches can now send and receive messages without a phone or cell signal, but they work differently. The Apple Watch only switches to satellite when both your iPhone and watch are offline. If your phone connects to something like T-Mobile's Starlink network, that counts as online and the watch won't use satellite. The Garmin operates independently and doesn't rely on a phone at all. I compare coverage areas, ease of use, message delivery times, and whether these features are worth the cost over a dedicated device like an inReach.
00:00 Connection Limitations
01:37 How Connecting Works
05:52 Satellite Features
09:35 Reliability
11:20 Battery Drain
11:57 Cost & Coverage
13:38 Recommendations
---
*Disclaimer:*
Some of these links are affiliate links where I'll earn a small commission if you make a purchase at no additional cost to you. I only recommend gear I actually use and trust.
