Garmin inReach vs Zoleo vs a PLB for trekking, and who should buy none

A personal locator beacon is the cheapest way to call for rescue, because it has no subscription. A Garmin inReach or a Zoleo costs a monthly plan, and in return you can send messages and receive replies. In the US, Garmin’s inReach plans run from $7.99 to $49.99 a month plus a $39.99 activation fee. Zoleo’s are $19.99 or $34.99 a month, with a $19.99 activation fee and a three-month minimum. A beacon sends one thing, a distress signal, and costs nothing after you buy it. On a guided teahouse trek, many people need none of the three.

Messenger or beacon, the real difference

A messenger is a conversation and a beacon is an alarm. A Garmin inReach or a Zoleo sends and receives text over the Iridium satellite network, so you can explain what happened and get an answer. A personal locator beacon, or PLB, transmits a distress signal on 406 MHz to the international Cospas-Sarsat system. According to NOAA, which runs the US side of that system, PLBs “can only be activated manually” and alert rescue authorities within minutes.

With a messenger, a twisted ankle can be a text home and a slow walk down. A beacon can only say you need help. Some newer beacons have a Return Link Service light that confirms the alert was received. NOAA points out that the light does not mean a rescue has been launched.

What each one costs for a single trek

For one three-week trek a year, a Garmin plan costs less to run than a Zoleo, and a beacon costs nothing to run. Plan prices are from each maker’s US page on 27 September 2026. The device is extra on all three; check its price on the maker’s own page.

Garmin’s four plans differ mainly in messages. Enabled charges 50 cents per text, Essential includes 50, Standard 150 and Premium unlimited. Every plan includes SOS. You can suspend service at no cost for up to twelve months, and Garmin says SOS stays available during a suspension on some devices. Zoleo’s Prepare plan includes 50 messages and Protect is unlimited. SOS is included on both and never counts against your allowance. After the three-month minimum you can pause for $4.50 a month, but Zoleo says plainly that a paused device can’t send an SOS.

The totals are our own arithmetic on the published prices, before tax. Between trips the gap widens. A suspended Garmin costs nothing for up to twelve months at a time, while a paused Zoleo still costs $4.50 a month. That is why the inReach suits people who trek once a year. One catch: Garmin says some devices are cancelled automatically after twelve months in suspension, and then you pay a reactivation fee.

What happens when you press SOS

With a messenger, a staffed centre contacts local rescuers for you. With a beacon, the signal goes into the government search-and-rescue system. Garmin says its Response team keeps a global database of local first responders, contacts the right one, messages you during the emergency and updates your emergency contacts. It is also blunt about two limits: there’s “no specific timeline” for a rescue, and any rescue fees are charged to the person the SOS was for.

With a PLB, NOAA explains that the alert goes to a mission control centre and then to the right rescue authority, which can be another country’s point of contact. Registration speeds this up, because your details travel with the alert. It’s free, and you register in the country your beacon is coded for, which isn’t necessarily where you trek.

Battery, cold and the Himalaya

All three last a normal trek on paper. Cold is what shortens that in practice. Garmin’s manual gives the inReach Mini 3 up to 350 hours at a 10-minute tracking interval, falling to 105 hours at two minutes. Zoleo claims over 200 hours. NOAA sets a PLB’s minimum at 24 hours of transmission once activated. That’s why a beacon sits switched off in your pack until the day you need it.

Charging is where trekkers get caught. Both Garmin’s Mini 2 manual and Zoleo’s spec sheet list a charging range that starts at 0°C. A dining-room socket at 4,500 metres may be colder than that before the stove is lit. Charge in the warm part of the evening, and keep the device in an inside pocket on the trail, as with your phone. Our travel tech hub covers power banks and cold batteries.

Is a satellite device legal in Nepal and on the way?

We couldn’t find an official Nepali rule that deals specifically with personal satellite messengers, so check with the Nepal Telecommunications Authority before you rely on one. What we could verify is broader. In May 2025, in a notice reported by Republica, the NTA said that using or distributing telecommunications services without government permission or an NTA licence is punishable. Garmin and Zoleo both warn that some jurisdictions restrict these devices and that knowing the local law is the user’s responsibility.

The rule that catches trekkers most often is India’s. It needs prior permission for two-way satellite devices, and many flights to Kathmandu connect through Delhi. Read the India transit rule for satellite messengers before you book a flight with an inReach or a Zoleo in your bag. And don’t expect your phone to fill the gap: phone satellite SOS isn’t offered in Nepal by Apple or Google.

The verdict, including who should buy nothing

Buy a beacon if you want a rescue button and no bill, a Garmin inReach if you trek once a year and want to talk to people, and a Zoleo if you’ll use it for more than three months. Buy nothing if you’re on a guided teahouse trek. On the main Everest, Annapurna and Langtang routes you pass villages with phone signal most days, and your guide is in touch with the office.

The people who should buy one are those heading somewhere remote without a guide, or anyone whose family genuinely needs to hear from them every evening. The question for them is whether they want to be heard or only found. A beacon gets you found; a messenger does both, for a monthly fee.

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Sources: Garmin, inReach Consumer Plans page (US) and “Top questions: Triggering an SOS on an inReach device”, and the inReach Mini 3 and Mini 2 manuals; Zoleo, Monthly Plans page (US) and Satellite Communicator specifications; NOAA SARSAT, 406 MHz emergency beacons, FAQs and Cospas-Sarsat system overview, all read on 27 September 2026; Republica, 6 May 2025, on the Nepal Telecommunications Authority notice. The single-trek totals are our own arithmetic. No maker pays us for this page and it contains no affiliate links. Features and coverage change; check the maker’s own page before you rely on a device.

Photos via Pexels: Maël Balland (cover), Chandra, Jungsik Kwak.