Safety & Communication
Staying Safe
Off-Grid
Cell signal disappears fast in the backcountry. Here's everything you need to stay connected, call for help, and hike with confidence — no matter where the trail takes you.
Why Cell Signal Isn't Enough
Most trails in the US lose cell coverage within the first mile. In places like Big Bend, the Rockies, or the Cascades, you can go hours — or days — without a single bar. That's not a problem until it is.
No Signal = No 911
Standard emergency calls require cell service. In remote terrain, even 911 is unreachable. A satellite device bypasses all of that.
Terrain Kills Coverage
Canyons, dense forest, and mountain ridges block cell towers. You can be 10 miles from a town and have zero signal.
Emergencies Move Fast
A sprained ankle at dusk, a flash flood, a partner with altitude sickness — having a way to call for help can mean the difference between a story and a tragedy.
If you're hiking somewhere cell service is unreliable — and that's most trails worth hiking — carry a way to communicate off-grid. The options are more accessible (and affordable) than ever.
Apple's Built-In Satellite Features
If you have an iPhone 14 or newer, you already have satellite communication in your pocket. Apple quietly built one of the most important safety features in hiking history directly into iOS — and most people don't know how to use it.
Emergency SOS via Satellite
Available on iPhone 14, 15, 16 and newer · Free for 2 years, then $99/yr
When there's no cell or Wi-Fi signal, your iPhone can connect directly to satellites to send an emergency SOS with your location to rescue services. The process walks you through pointing your phone at a clear patch of sky and sends a compressed message to 911 dispatchers on your behalf. It also shares your location with your emergency contacts in real time.
How to activate it:
- Open the Phone app and dial 911 — iOS will automatically switch to satellite if there's no cell signal
- Or go to Settings → Emergency SOS → Try Demo to practice before you need it
- Make sure your emergency contacts are set up in the Health app
Roadside Assistance via Satellite
iPhone 14 or newer · For vehicle emergencies in remote areas
If your vehicle breaks down on a remote forest road or desert highway with no cell service, Roadside Assistance via Satellite connects you to AAA or your roadside provider via satellite. Same process — point at the sky, follow the prompts.
Check In & Family Sharing Location
Works via satellite when off-grid
Apple's Check In feature (Messages → + → Check In) automatically notifies a contact when you arrive safely — and if you don't, it shares your last known location, battery level, and cell signal. This works over satellite on iPhone 14+, making it a powerful passive safety net on every hike.
Dedicated Satellite Communicators
Apple's built-in satellite is excellent for emergencies, but it's one-way and limited. If you're doing serious backcountry, multi-day trips, or going somewhere truly remote, a dedicated satellite communicator gives you two-way messaging, live tracking, and more.
Garmin inReach Mini 2
Two-way satellite messaging via the Iridium network — meaning it works literally anywhere on Earth. Send and receive texts, trigger SOS with two-way communication with rescue coordinators, and share a live tracking link with loved ones. At 100g it clips to a shoulder strap and disappears.
SPOT X
Two-way satellite messaging at a lower entry price. Slightly larger than the inReach but includes a built-in keyboard for easier typing. Good option if you want two-way comms without the inReach price tag. Uses the SPOT/Globalstar network.
ACR ResQLink 400
A PLB (Personal Locator Beacon) — no subscription, no monthly fee. One button press triggers a 406 MHz distress signal to NOAA's COSPAS-SARSAT system, which is monitored 24/7 by search and rescue worldwide. SOS only (no two-way messaging), but the signal is incredibly reliable and there's never a bill.
The Most Important Safety Step
No device replaces this: tell someone where you're going before every hike.
Leave a trip plan
Text or email a trusted contact your trailhead, planned route, and expected return time. If they don't hear from you by a set time, they know to call search and rescue. This costs nothing and has saved lives.
Set up Check In on your iPhone
Before any hike, open Messages → + → Check In and set your expected end time. If you don't manually end the check-in, your contact gets your GPS location and phone stats automatically.
Know where the signal drops
Sendero Maps shows trail data including terrain type and elevation — use that to anticipate where you'll lose coverage and plan accordingly.
Practice before you need it
Run the Emergency SOS satellite demo in iOS Settings. Test your satellite communicator at home. The worst time to figure out how a device works is when you're panicking on a trail.
Ready to explore?
Download Sendero Maps — free.
AR trail navigation, offline maps, audio guides, and expert knowledge panels. Works with your GPS backup.