NPS says it plainly in two places. The stargazing page: “Do not plan on having cell service in the park.” The official park brochure: “Cell phones don’t work in most areas and don’t make you invincible.”

Before you lose signal

  • Download the official park brochure and map (PDF) and anything else from the maps page.
  • If you have an Angels Landing permit, have it saved offline. The shuttle narration notes free WiFi at Zion Lodge for permit downloads.
  • Read current conditions and the flash flood forecast in town.
  • Screenshot the shuttle schedule so you know the last bus.
  • Tell someone your route and return time.
  • Save the park number: 435-772-3256. In an emergency, call 911 if you can get through; NPS lists 911 for reporting wildfire.

Safety basics from NPS

  • “Your safety is your responsibility.” Stay on the trail, stay back from cliff edges, and watch children.
  • Flash floods can happen at any time. Monsoon season is July to September.
  • Carry at least one gallon of water per person per day.
  • If you see rockfall, move away from the cliff.
  • If you miss the last shuttle, it is a long walk in the dark. Rangers cannot give you a ride.
The Kolob Canyons Road curving between snow-dusted red cliffs after a winter storm, Zion National Park.
Kolob Canyons Road in winter, Zion National Park. Photo: NPS Photo, public domain (U.S. National Park Service work), via Wikimedia Commons.

Satellite messengers as gear

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A satellite messenger or personal locator beacon can send an SOS where phones cannot. NPS does not require one, and no device works everywhere. Treat it as a backup, not a plan. If you carry one, learn it at home, check whether the maker requires a subscription, and test it before the trip. We have not picked or linked a specific model yet. When we do, it will be marked as an affiliate link.

Related: printable day-pack and Narrows checklist, Narrows rules, heat plan.

Quick FAQ

Is there cell service in Zion?

Not in most areas. NPS says not to plan on cell service in the park.

Is there WiFi in Zion?

The NPS shuttle narration mentions free WiFi at Zion Lodge for downloading Angels Landing permits. Don’t count on it elsewhere.

Do I need a satellite messenger for Zion?

NPS does not require one. It is optional backup gear; the basics are water, a plan someone knows about, and checking conditions.