← Part of the Laos money guide
Laoschecked Aug 2026A catch or twoStaying connected in Laos.
Laos sells data for almost nothing and has less of a network to sell it on than its neighbors. The right move is a cheap local SIM plus the habit of downloading things before you leave a town.
At a glance
Coverage
Fine in the towns, thin between
Carrier roaming
$10 to $12 a day
Cheapest
A local SIM, a few dollars
Signal gaps
The mountain north, river routes
Coverage is fine in Vientiane, Luang Prabang, Pakse and Vang Vieng and along Route 13, and genuinely thin between them: the mountainous north, the eastern highlands, the Bolaven back roads and the Mekong river routes have real gaps. On price, a local SIM from Unitel or Lao Telecom costs a few dollars for a generous data pack, bought with your passport at the airport or a phone shop, and Unitel has the widest reach by a clear margin, which matters more here than the price does. Your US carrier charges about 10 to 12 dollars a day (AT&T and Verizon day passes, and Laos is on AT&T's covered list), though AT&T caps its Day Pass at 10 daily fees per line per bill period, about 120 dollars, and covers the rest of that bill period on land, so the daily arithmetic stops past day 10, and T-Mobile's mid and upper tiers include 5GB to 30GB of high-speed data. A Nomad eSIM is a few dollars per gigabyte and does not change the coverage, so download offline maps before any long bus or boat day. Never roam pay-per-use, at about 2 dollars a megabyte.
Cheap, and the network matters more than the price
A Unitel or Lao Telecom SIM with a data pack is a few dollars, and at that price the difference between the options is not money, it is where the signal exists. Unitel has the broadest network in the country, including a lot of the north, and it is the one to ask for by name. Buy at Vientiane or Luang Prabang airport or an official shop, with your passport.
Against a US carrier day pass at 10 to 12 dollars a day, a month of Lao data for a few dollars is not a close comparison, and a travel eSIM costs several times it. We earn nothing on a Unitel SIM and it is still the right buy for a Laos-only trip.
The gaps between towns are the real story
In the towns you will have workable 4G, with 5G in parts of Vientiane. Off them, Laos is mountains and river valleys with a young network, and the gaps are real rather than nominal: much of the north around Nong Khiaw and Phongsali, the eastern highlands, the Bolaven plateau back roads, and the slow boat down the Mekong from Huay Xai, which is two days with long stretches of nothing.
No purchase fixes that, which is worth saying on a page that carries an eSIM link. What helps is preparation: download offline maps and your accommodation details before leaving a town, screenshot your bus or boat booking, and treat a long travel day as offline by default. Guesthouse wifi on the tourist trail is common and often the best connection you will have.
Roaming, and the eSIM case
Worth confirming because it changes the arithmetic: Laos is on AT&T's covered-destination list, so a day pass applies at about 10 to 12 dollars a day rather than pay-per-use, and AT&T caps its Day Pass at 10 daily fees per line per bill period, about 120 dollars, and covers the rest of that bill period on land, so the daily arithmetic stops past day 10. T-Mobile's current tiers include roughly 5GB on Experience More, Magenta MAX and Go5G Plus, 15GB on Experience Beyond and Go5G Next and 30GB on Better Value, slowing to 256kbps after.
A Nomad eSIM makes sense here mainly as part of a regional plan, since Laos is usually one leg of a trip through Thailand, Vietnam or Cambodia, and one plan across all of them beats a SIM per border. It rides the same Lao networks, so it does not buy you coverage the local SIM lacks. This guide is written for US travelers departing the US. For more, see cash or card in Laos, taxis and apps in Laos, and the Laos money guide.
Common questions
Quick answers.
Which network has the best coverage in Laos?
Unitel, by a clear margin, including much of the mountainous north. Ask for it by name rather than taking the cheapest pack on the counter, because at these prices the difference between options is reach rather than money.
How much is a SIM card in Laos?
A few dollars for a Unitel or Lao Telecom data pack, bought with your passport at the airport or an official phone shop. That is a fraction of one day of US carrier roaming.
Will I have signal on the slow boat down the Mekong?
Not for much of it. The two-day slow boat from Huay Xai passes long stretches with no coverage on any network, and the same is true of the mountainous north and the eastern highlands. Download maps, bookings and anything you want to read before you leave a town.
How much does it cost to use my US phone in Laos?
About 10 to 12 dollars a day on an AT&T or Verizon day pass, and Laos is on AT&T's covered-destination list so the day pass applies rather than pay-per-use. AT&T caps its Day Pass at 10 daily fees per line per bill period, so about 120 dollars covers the rest of that bill period on land, while Verizon's TravelPass has no equivalent cap and keeps billing daily. T-Mobile is worth checking first, since its mid and upper tiers include 5GB to 30GB abroad.
More on Laos
The little money things nobody warns you about.
- Do I need cash in Laos, or can I use cards?Cash, and plenty of it. Laos is the most cash-dependent country we cover, and the friction is not acceptance, it is the ATM: low limits and a fee every time. A little planning fixes it.
- Tipping in LaosLaos is not a tipping culture, so there is no percentage to remember and nobody is waiting for one. In tourist areas a small tip has become normal and is genuinely appreciated, which is a different thing from expected.
- Taxis, tuk-tuks and ride apps in LaosMetered taxis barely exist here. Getting around means tuk-tuks, shared songthaews and, in the bigger towns, a local ride app that takes the negotiation out of it. One habit covers the rest: settle the fare first.
- Booking the Laos-China Railway, and why that is the hard partThe Laos-China Railway is fast, comfortable and the obvious way to move between Vientiane and Luang Prabang. Getting a seat is what catches visitors out, because the booking and payment side was not built for anyone without a local phone number. Here is how it actually works.
- Do US citizens need a visa for Laos?Yes, and the online route is the expensive one. Laos charges roughly ten dollars a person more to apply in advance than to buy the visa at the airport counter, which is the reverse of the usual advice. Here is what each costs, and what the cheaper one wants from you.
- What does getting sick in Laos cost?Laos has the starkest medical geography of anywhere we cover. Serious care is not in the country, it is across the river in Thailand, and the honest planning question is not what a doctor charges but how you get across and how fast.
Sources, and how this was checked
Last checkedAug 2026
- T-Mobileinternational roaming pages listing the high-speed data allowance by plan tier
- Verizoninternational travel pages, the TravelPass daily rate and what it includes
- AT&TInternational Day Pass details, the daily rate and the 10-fee cap per bill period
- AT&Tthe International Day Pass destination list, which includes Laos
- US State DepartmentLaos country information and local conditions
Our own readChecked Aug 2026. Laos inclusion on AT&T's covered-destination list was verified against AT&T's own list on this check, since an uncovered country would need a pay-per-use warning instead of a daily rate. The coverage picture is the desk's read from operator footprints and consistent traveler accounts rather than one official table, and the honest summary is that the towns and Route 13 are fine while the north and the river routes are not. No data plan changes that, which is why this page spends as much space on offline habits as on price.
How we checkHow every guide is researched, checked and dated