Assume you'll have no mobile signal for the whole W Trek. GoChile, a Chilean travel operator, puts it bluntly: inside Torres del Paine "no hay señal de celular para los chilenos tampoco", meaning there's no cell signal, for Chileans either. Refugios fill the gap with paid Wi-Fi, from about US$4 for 30 minutes depending on speed. Your eSIM earns its money in Punta Arenas, Puerto Natales and on the bus, and a satellite messenger is the only way to reach help from the trail itself, because Chile isn't covered by any phone's built-in satellite SOS.
We haven't walked the W for this site. This guide combines the operator and outfitter sources linked below with the eSIM prices in our price index.
What to expect on the trail
| Where | Mobile signal | Wi-Fi | Notes |
|---|---|---|---|
| Punta Arenas, Puerto Natales | Your eSIM works in town | Hotels, cafés | Last good place to download maps and messages |
| Park entrance and transfers | Don't count on it | Buses run from Puerto Natales | |
| Refugios and campsites on the W | Plan for none | Paid, at most refugios | From about US$4 per 30 min (GoChile) |
| Between refugios | None | None | Download everything you need before leaving |
Sources: GoChile (undated), Swoop Patagonia (updated 31 Oct 2025).
GoChile says the refugios "cuentan con red de Wifi pero no está incluido dentro del precio de los programas": they have Wi-Fi, but it isn't included in trek packages. Swoop Patagonia, a UK specialist operator, says most refugios sell Wi-Fi at "generally the same price as you would pay at an airport" and warns "don't expect lightning-fast speeds". Good enough for a WhatsApp message home and a weather check, not for uploading the photos.
For charging, Swoop says some better-equipped refugios have "USB charging banks", and where they don't, staff may let you charge behind the bar for a small tip. A power bank removes the guesswork.
Which eSIM for Chile
Since you'll only use mobile data off the trail, size the plan for town days, not trek days. Two weeks at 0.5 GB a day is generous for a W Trek trip:
Nomad uses Movistar; Holafly lists Telefónica, which is Movistar's parent; Airalo lists Movistar plus another network. Lotso Travel, which our team runs, comes in mid-table for Chile at $30.99, so we wouldn't pick it here on price. If you're continuing to El Chaltén or El Calafate in Argentina, check that your plan covers both countries; most single-country plans don't, and a Latin America regional plan may cost less than two separate eSIMs.
Satellite backup for Patagonia
Chile and Argentina aren't on Apple's list of countries for Emergency SOS via satellite (5 October 2026), and they aren't on Google's Pixel Satellite SOS list as we read it. Direct-to-cell services from T-Mobile, Rogers and others don't cover Chile either. So the only satellite option on the W is a dedicated messenger, a Garmin inReach or a ZOLEO, both on the global Iridium network.
The W is a busy trail with ranger stations and refugios, and many people walk it without a messenger. If you're doing the full O circuit, walking out of season, or going solo, we'd carry one. Garmin's Enabled plan is $7.99 a month for SOS only, plus a $39.99 activation fee, and you can suspend it when you're home; ZOLEO's Prepare plan is $19.99 a month with 50 messages. Our satellite guide has the full comparison.
Before you leave Puerto Natales
Download offline maps of the park in your navigation app, save your refugio and campsite bookings as screenshots or PDFs (you'll be asked for them), check the forecast, and send your itinerary to someone at home with the date you expect to be back in town.
- A Chile eSIM installed at home (Ubigi or Nomad were cheapest for two weeks)
- Offline maps of Torres del Paine and booking confirmations saved to your phone
- Small cash or a card for refugio Wi-Fi, from about US$4 per 30 minutes
- A power bank; refugio charging is hit and miss
- A satellite messenger for the O circuit, the shoulder seasons or solo trips
Questions people ask
Is there cell service on the W Trek?
Plan for none. Chilean travel operator GoChile warns that inside the park "no hay señal de celular para los chilenos tampoco" (there's no cell signal, for Chileans either). Refugios sell Wi-Fi instead, from about US$4 for 30 minutes.
Do refugios in Torres del Paine have Wi-Fi?
Most do, for a fee that isn't included in trek packages. Swoop Patagonia says the price is "generally the same price as you would pay at an airport", and speeds are slow.
Does iPhone Emergency SOS via satellite work in Patagonia?
No. Chile and Argentina aren't on Apple's Emergency SOS via satellite country list (5 Oct 2026). A Garmin inReach or ZOLEO is the satellite option.
Which eSIM is best for Chile?
For a two-week trip at 0.5 GB a day, Ubigi ($24) and Nomad ($25) were cheapest on 31 Oct 2026. Nomad uses Movistar; Holafly lists Telefónica (Movistar); Airalo lists Movistar plus one other network.