Staying Connected Abroad: SIM, Roaming, or LoRa?

Arrive somewhere new, and getting online - and staying in touch with whoever you're traveling with - is usually the first thing on everyone's mind. Traveling solo, the answer is simple enough: buy a SIM, install an eSIM, or just turn on roaming. Traveling as a group - a family on holiday, a road trip crew, a motorcycle touring group, or a few friends backpacking across several countries - the question actually splits in two: how do you get online, and how does everyone in the group know where the others are, what they're doing, and how to reach each other if something comes up.

Those two problems don't always need the same answer, even though most people default to assuming they do. This guide walks through three common options - local SIM/eSIM, international roaming, and LoRa devices - so you can see what each one actually solves.

Local SIM or eSIM: familiar, but it takes some setup

Buying a physical SIM or an eSIM from a local carrier is the most common way to get online in a new country. It usually comes with a few steps: registering, showing a passport or ID depending on local rules, activating the plan, and picking a carrier and data package that fits how long you're staying. In some countries this is quick, handled right at an airport kiosk; in others it means queueing, filling out forms, or being told the plan is only available to residents or visa holders.

For a group moving through several countries - a cross-border road trip, say, or a multi-country motorcycle tour - this step repeats at every stop: everyone buying a new SIM, a different carrier, a different plan, a fresh registration each time.

International roaming: more convenient, but carrier-dependent

Roaming is far more convenient in practice - same SIM, same phone number, just turn roaming on (or it's already included in your plan) and it works almost as soon as the plane lands, no queueing or paperwork required.

That convenience comes with dependencies of its own: whether your home carrier has a roaming agreement with a carrier in the country you're visiting, whether your plan actually covers that country, and pricing - roaming outside a bundled allowance can get expensive fast, especially for data.

Both need the same thing: cell coverage

Whether it's a local SIM or roaming, both need the same underlying condition to work: cell coverage in that area. In cities and most tourist areas that's rarely an issue. But on mountain roads, remote border crossings, or the kind of long, sparsely populated stretches a road trip or motorcycle tour tends to cross, signal can get patchy or disappear entirely - and at that point, neither a local SIM nor roaming helps, simply because the tower infrastructure isn't there.

LoRa: a different layer, just for your group

If what you actually need isn't internet access but simply staying in touch with the people you're traveling with - knowing where everyone is, sending a short message, being able to reach each other if something happens - there's another option worth considering: LoRa radio devices.

Instead of every phone trying to reach a carrier's tower, each person in the group carries a small radio, and those radios talk directly to each other, forming a local network that belongs to the group alone - no SIM, no carrier, and no dependence on whether that area has cell coverage at all.

A quick comparison: SIM/eSIM, roaming, and LoRa

This isn't a ranking - the three options solve overlapping but not identical needs, and each comes with its own trade-offs:

LoRa doesn't replace SIM or eSIM if you need internet

Worth saying plainly upfront: LoRa doesn't replace a SIM or eSIM if you need internet access. You'll still need mobile data or Wi-Fi for browsing, social media, bookings, ride-hailing, online maps, and most other internet services. A LoRa device doesn't connect to the internet, and isn't meant to.

What LoRa adds instead is an independent communication layer, just for your group - running alongside whatever you use to get online, not replacing it.

For example, you may still want an eSIM for internet access, while using LoRa for communication and location sharing within your group.

Where Nelos fits in

Nelos is an app that connects your phone, over Bluetooth, to a compatible LoRa radio. That radio handles the actual communication between members of the group, while Nelos gives you a familiar phone interface: messaging, everyone's location on a shared map, and a Need Help feature to signal quickly if something goes wrong - all without needing cell service, Wi-Fi, or any backend server in between.

For a group moving through multiple countries, that's a different way to think about "staying in touch": a SIM or eSIM handles the internet connection, while LoRa and Nelos add a separate communication layer for the group, one that doesn't depend on cell service.

Your group network travels with you.

If you're deciding what to buy, the devices guide has details on compatible hardware, and Getting Started walks through pairing a device and setting up your first team. There's also a page that goes into more detail on how Nelos applies to travel.

A short routine before you cross a border

Whatever you're carrying, a few things are worth doing before each leg of the trip, not once you're already on the road:

• Before each country on your route, check the current radio and frequency regulations from the local telecom regulator - don't assume a device that's fine in one country is fine in the next.
• Still plan for a way to get online - eSIM, local SIM, or Wi-Fi - for whatever LoRa doesn't cover: online maps, bookings, reaching people outside the group.
• Charge phones and LoRa devices before each leg departs, not in a last-minute rush.
• Pair devices and confirm everyone's on the same team before departure, so there's nothing left to set up or troubleshoot once you're out of coverage.
• Download offline maps for each leg ahead of time - see Nelos's worldwide offline maps.
• Agree with the group ahead of time on what to do if someone gets separated or loses contact temporarily.

What your trip actually needs

There's no single right answer for every trip. Someone on a short business trip to one country, mostly staying in a city hotel, will probably be fine with an eSIM or roaming alone. But a family on a multi-country road trip, a motorcycle touring group working through a mountainous border region, or a backpacking group moving continuously across several countries over several weeks tends to run into the exact gap that SIM and roaming don't fully solve: staying in touch with the group in stretches with no signal, or not wanting to spend time registering a new SIM at every border just to message each other.

SIM/eSIM and roaming are still what you need if you want to get online - nothing replaces that. LoRa, with or without Nelos, solves a different part of the problem: keeping the group connected, independent of cell service, as long as local regulations allow the device you're using. For a lot of groups, the practical answer isn't choosing one of the three, but using SIM/eSIM and LoRa for two different jobs - after checking the relevant regulations before you go.