Destination
Laos eSIM and internet: Luang Prabang, Vang Vieng and the Mekong
Mobile data in Laos for travelers: solid coverage in Vientiane and Luang Prabang, what to expect in the northern mountains, on the Mekong and on the train, and an eSIM for an Indochina route.
Plan for your trip: Laos · Data for your trip — See plans →
Mobile internet in Laos works in the towns, Vientiane, Luang Prabang, Vang Vieng and Pakse, while outside them it all comes down to terrain. The northern mountains, the Mekong valley, caves and villages are where the signal weakens or drops. Travelers often combine Laos with Thailand, Vietnam and Cambodia, so it pays to know how to handle data at the border. The easiest way to connect is a travel eSIM installed at home: the profile comes on as soon as you land or cross the border.
Where does mobile data work in Laos, and where doesn’t it?
Laos has several mobile carriers, the largest being Unitel and Lao Telecom. They run 4G networks in towns and along the main roads, while coverage in the mountains and villages is uneven. Laos is a mountainous country with a small population, and there are long stretches without signal between towns.
| Where | What to expect | What to do in advance |
|---|---|---|
| Vientiane | Solid coverage downtown and along the Mekong riverfront | Nothing special, an installed eSIM is enough |
| Luang Prabang | Stable in town, weaker at Kuang Si Falls | An offline map of the surroundings |
| Vang Vieng | Signal in town, none in caves or on the river while tubing | Phone in a dry bag, contacts saved offline |
| Nong Khiaw, Muang Ngoi | Weak in the villages, gone on trails and the river | Screenshots of bookings and your route |
| Pakse, Bolaven Plateau | Works in Pakse, gaps at the plateau’s waterfalls | An offline map of the south |
| Si Phan Don (4,000 Islands) | Signal on Don Det and Don Khon, but slow and uneven | Do big downloads in advance |
| Thakhek Loop, Kong Lor Cave | Gaps on the road, no signal in the cave | Route track and bike rental contacts |
Actual quality in Laos depends on the carrier, the location and the weather: in the rainy season, roughly May to October, there can be outages in the mountains. Nobody can promise the same internet across the whole country, and that goes for both a local SIM and a travel eSIM.
The train, the Mekong and the mountains: where you lose signal for hours
The Laos–China Railway links Vientiane, Vang Vieng and Luang Prabang, and most travelers now take the train. On board, mobile data comes back at stations and on open stretches and drops in the tunnels, of which there are plenty on the mountain section. You’ll be messaging in bursts, with texts going out between tunnels; a video call won’t hold.
The Mekong slow boat from Huay Xai, on the Thai border, to Luang Prabang takes two days with an overnight stop in Pakbeng. There’s signal near villages, but on the river between them it disappears for long stretches. It’s one of the most beautiful journeys in Laos, and being offline is part of the experience, as long as you prepare in advance.
The northern mountains, Nong Khiaw, Muang Ngoi and Phongsaly, are all about trekking and village stays. Signal is weak in the villages and usually absent on trails and in valleys. The Thakhek Loop by motorbike, with Kong Lor Cave, is another route where coverage comes and goes for dozens of kilometers.
Laos SIM card or eSIM: which should you get?
Local SIM cards in Laos are sold at the airports in Vientiane and Luang Prabang, at carrier stores and in shops. Laos made registration mandatory for every phone number in 2020–2022, and travelers report that foreigners get a SIM against their passport, so bring it along and check the current procedure before your trip. A Lao number comes in handy on a long trip and when guesthouses and guides keep in touch by phone.
A travel eSIM gets you data without hunting for a store, which matters most if you cross by land and the first shop selling SIM cards is in a town an hour from the border. With MoreSim, you buy the profile on the website or in the Telegram bot @moresim_bot, paying with Telegram Stars from any country, right in the bot (bank card and SBP payments currently work with cards issued in Russia), and the QR code arrives in the chat in about 30 seconds. The eSIM works as a second line, so you keep your home number. MoreSim plans are mobile data only, with no phone number: you call through messaging apps, and the data and validity options for Laos are on its catalog page.
Laos on an Indochina route: one plan per country
If Laos is part of a multi-country route, each country needs its own plan: as of October 2026, the MoreSim catalog has no regional plans for Asian countries. Travelers often enter Laos over the Friendship Bridge from Nong Khai in Thailand, by river from Chiang Rai via Huay Xai, overland from Vietnam, or from Cambodia in the south. The train from Laos also runs to China, which has its own restrictions on foreign services. A Laos plan only works in Laos.
| Route | eSIM option | What to watch for |
|---|---|---|
| Laos only | A Laos plan | Enough data for the whole trip, top-ups in the bot |
| Thailand and Laos | A plan for each country | Switch your data line after the bridge or border |
| Thailand, Laos, Vietnam, Cambodia | A plan for each country | Install every profile at home and switch lines at each border |
| Laos plus the train to China | A separate plan for China | Read up on how the internet works in China in advance |
It’s easiest to install all your plans at home in advance: each one starts counting on first connection in its destination country, so the next country’s profile doesn’t use up days while it waits for its border. For details on the neighbors, see our guides to Thailand, Vietnam and Cambodia.
How to get online in Laos
Getting online in Laos takes six steps: the first two happen at home on Wi-Fi, the rest after you land or cross the border.
- At home, check that your phone supports eSIM: the bot @moresim_bot has an automatic compatibility check.
- Buy a Laos plan, install the profile over your home Wi-Fi and label the line “Laos”.
- After landing or crossing the border, turn off airplane mode.
- Pick the Laos eSIM for mobile data and turn on data roaming for it: most travel eSIMs run on a local carrier’s network as roaming.
- Turn off mobile data on your home SIM, but keep the line itself on if you’re expecting bank texts.
- If the network doesn’t show up within a couple of minutes, toggle airplane mode again.
How much data do you need for a trip to Laos?
How much data you need in Laos depends on your habits, not the country. Maps, messaging, a translation app and booking places to stay don’t use much. What eats data is video, stories from Kuang Si and the Mekong, and automatic photo backup to the cloud. On long stretches without signal you use no data at all, but afterwards your phone uploads everything it’s been holding in one go.
- Two weeks in towns with maps and messaging: a small plan will do.
- Remote work or a long trip: work out how much you need with our data guide.
- Set photo backup to Wi-Fi only, or it will eat your data as soon as you’re back in coverage.
- If you run out before your plan ends, top up without a new eSIM: use “Top up data” on the eSIM card in your account or in the bot’s app, if top-ups are available for that plan.
Check data amounts and validity for Laos on the country’s catalog page. If something doesn’t connect on arrival, MoreSim support is reachable via /support in the bot, a ticket in your account and email.
FAQ
What is mobile internet like in Laos for tourists?
In Vientiane, Luang Prabang, Vang Vieng and Pakse, mobile data usually works fine for maps, messaging and bookings. In the northern mountains, on the Mekong between towns and in villages, the signal weakens or drops. Actual quality depends on the carrier and the location.
Is there internet on the Vientiane to Luang Prabang train?
On the Laos–China Railway train, there’s mobile coverage at stations and on open stretches, but it drops in the many tunnels. You’ll be online in bursts, with messages going out between tunnels. Save your ticket, your accommodation address and contacts offline before boarding.
How do I buy a SIM card in Laos?
Local SIM cards in Laos are sold at airports, at carrier stores such as Unitel and Lao Telecom, and in shops in towns; travelers report being asked for a passport. Every number in Laos has to be registered, so check how registration works for foreigners before your trip. If you only need data, you can install a travel eSIM at home and switch it on after landing or crossing the border.
Is there internet on the Mekong slow boat?
On the two-day slow boat from Huay Xai to Luang Prabang, there’s signal near villages and at the overnight stop in Pakbeng, but on the river between them it disappears for long stretches. Download movies, books and an offline map in advance, and screenshot your Pakbeng booking.
Which eSIM should I get for Laos, Thailand and Vietnam?
A Laos plan only works in Laos. For an Indochina route, install a plan for each country and switch lines at the border: as of October 2026, the MoreSim catalog has no regional plans for Asian countries. It’s easiest to install all the profiles at home in advance.
How much data do I need for two weeks in Laos?
It depends on your habits: maps, messaging, translation apps and bookings don’t use much, while video, stories and automatic photo backup burn through a plan fast. Estimate your own usage with our data guide and leave some headroom: a MoreSim plan can be topped up in the bot without a new eSIM.