Cheapest eSIM for Vietnam (July 2026): 8 Providers Compared From $2.98

Plan size calculator

Enter your trip length and how you use your phone, and we’ll point you to the smallest eSIM4 plan that won’t run out so you pay the least. As a rough guide, short trips need 1GB to 3GB, a full week runs 5GB to 10GB, and heavy use is best on unlimited.

This is a rough guide for typical use with offline maps and some free wifi. Heavy streamers and anyone tethering a laptop should lean towards unlimited.

What is a Vietnam eSIM?

An eSIM is a digital SIM that installs straight onto your phone for mobile data, with no physical card to slot in. You buy it online, scan a QR code to install it, and it connects to a Vietnamese network the moment you land.

Your home SIM stays exactly where it is, so you keep your usual number.

These are travel data eSIMs, and they’re the simplest way to stay online for maps, translation and messaging in Vietnam. There are no roaming fees to worry about and no queue at a SIM counter in Tan Son Nhat or Noi Bai when you arrive.

Is Jetpac’s $1.00 plan actually cheaper?

Jetpac genuinely undercuts everyone on the 1GB entry tier. Its promo code drops a 1GB plan to $1.00, and no other provider comes close on that single number.

If you truly need only 1GB for a couple of days, it’s the lowest price on the page and we won’t pretend otherwise.

The catch is what you get for that dollar. It’s 1GB valid for just 4 days, so it covers a weekend of maps and messaging and little else.

There’s no room to stream, tether or ride out a longer trip, and Jetpac has no unlimited plan under 10 days for Vietnam.

Once you step up to the sizes most travellers actually buy, the picture flips. eSIM4 is cheapest at 2GB ($4.98), 3GB ($6.98) and 5GB ($9.98), and its 15-day unlimited plan at $47.98 undercuts every rival.

For the data a real Vietnam trip uses, eSIM4 is the better deal, not the teaser.

Which Vietnam eSIM is right for your trip?

For most travellers the cheapest pick is eSIM4, with 2GB at $4.98, 3GB at $6.98 and unlimited from $10.98 for 3 days. The exceptions are worth knowing: Jetpac wins a rock-bottom 1GB, and Nomad comes in cheapest at 10GB, 20GB and the 5 and 10-day unlimited plans.

Short trip or light data

For a few days in Hanoi or Ho Chi Minh City on maps and messaging, eSIM4’s 2GB plan at $4.98 (valid 15 days) is the value pick. If you genuinely need only 1GB and nothing more, Jetpac’s $1.00 code is the cheapest single number going.

A typical week

For a week of daily navigation, social and some browsing, 5GB covers most people, and eSIM4 wins that size at $9.98. If you expect to push past 5GB, Nomad’s 10GB at $17.00 edges eSIM4’s $18.98, so it’s the pick for a heavier week on fixed data.

Heavy data or a longer stay

For streaming, tethering a laptop, or two weeks or more, go unlimited. eSIM4 is cheapest at 3, 7, 15 and 30 days, with the 15-day plan at $47.98 and a 30-day plan at $87.98 that no rival matches.

Nomad edges the 5 and 10-day durations by under a dollar if that’s your exact trip length.

Families and groups

Each phone needs its own plan, so buy one per person. For whoever hotspots the group, pick a larger fixed plan or unlimited, since eSIM4 plans support tethering and one heavy-use plan can keep a couple of devices online.

Strict single-plan budget

If you want the absolute lowest price on one plan, Jetpac’s $1.00 1GB is unbeatable for a 4-day dabble. For everything above that, eSIM4 is the better value: cheapest at 2GB, 3GB, 5GB and most unlimited durations.

Heading to one city or a wider region? See our best eSIM for Vietnam guide for full coverage and support rankings, and our best eSIM for Thailand guide if you’re pairing Vietnam with a Southeast Asia hop.

How much data do you need in Vietnam?

As a rough guide, light users want 1GB to 3GB, a week runs 5GB to 10GB, and heavy use is best on unlimited. Vietnam leans on data because Grab is the go-to for rides and food, and travellers lean hard on Google Maps and translation apps to get around Hanoi and Ho Chi Minh City.

Light use: 1GB to 3GB

This covers maps, messaging and light browsing for a weekend or a few days. If you’re mostly on hotel or cafe wifi and just need data on the move, 2GB or 3GB is plenty.

A typical week: 5GB to 10GB

This handles daily navigation, social feeds, the odd video call and some streaming. It’s the most common one-week choice, and 5GB suits most people while a heavier week nudges toward 10GB.

Heavy use or long stays: unlimited

For streaming, tethering a laptop, constant Grab bookings and stays of two weeks or more, unlimited is the safe pick. This is where eSIM4 is cheapest on most durations, including the 15-day plan at $47.98 and a 30-day plan no rival matches.

Vietnam’s mobile networks and coverage

Vietnam runs on three main carriers: Viettel, Vinaphone and MobiFone. Viettel is the largest and has the widest reach, Vinaphone and MobiFone are strong in the cities and popular tourist areas, and travel eSIMs usually route onto one of the three.

Coverage in Hanoi, Ho Chi Minh City and along the main tourist routes is solid, and 5G has been rolling out across the big cities on all three networks.

Viettel tends to have the widest rural and mountain reach, which matters for trips up to Sapa or out to the Mekong Delta and remote coastlines. eSIM4 connects to a major Vietnam network with 4G LTE and 5G, so you get the same coverage the pricier providers rely on.

Why some cheap eSIMs feel slow or block apps

Some budget eSIMs route your data out through a server in another country to cut costs. That can add lag, slow your speeds, and make certain apps refuse to load because the service thinks you’re somewhere else entirely.

It’s worth checking that an eSIM gives you a local Vietnam connection, which keeps banking, maps and messaging apps working normally. eSIM4 connects to a major Vietnam network, so your data stays local on 4G LTE and 5G.

Is unlimited data really unlimited?

For normal use, yes. Most unlimited travel eSIMs apply a fair usage policy: full speed up to a daily high-speed allowance, then reduced speed for the rest of that day, resetting the next morning.

Regular maps, messaging, browsing and social use won’t reach that ceiling on a typical day.

If you plan to stream in HD for hours or tether a laptop all day, check the daily allowance before you buy. eSIM4’s unlimited plans are listed by duration above, and the full fair-usage terms show at checkout.

eSIM vs airport SIM, pocket wifi and local SIM

A travel eSIM is usually the cheapest, simplest way to get online in Vietnam. You install it before you fly, there’s no deposit, and it works the moment you land.

The trade-offs against the alternatives are still worth knowing.

• Airport or physical SIM. Data prices are similar, but you queue at a counter in Tan Son Nhat or Noi Bai on arrival and swap out your home SIM, losing your usual number while it’s out.
• Pocket wifi. A rented router several people can share, which suits groups, but it means a daily rental, a device to carry and charge, and a return before you fly home.
• Local Vietnam eSIM. A plan bought from a Vietnamese carrier can include a local phone number, handy for bookings, but it usually costs more than a travel eSIM.

For most travellers a travel eSIM wins on price and convenience. If you need a local number, eSIM4’s Yabb app add-on provides one without a separate SIM.

Will your phone work with an eSIM in Vietnam?

You need an eSIM-compatible, carrier-unlocked phone, and most handsets from the last few years qualify, including recent iPhones (XR and newer), Google Pixel 3 and up, and the Samsung Galaxy S20 range onward. To check, dial *#06# to see if your phone shows an EID, or look for an “Add eSIM” option in your Settings.

Apple and Google both publish full eSIM device lists if you want to confirm before flying to Vietnam.

If your phone came on a carrier contract, make sure it’s unlocked before you travel, because a locked phone won’t accept a new eSIM. Your home SIM stays in place, so you keep your normal number and apps while the eSIM handles your data in Vietnam.

How to set up your Vietnam eSIM

Install it before you fly and switch it on when you land, and the whole process takes just a few minutes.

1. Buy your plan and receive the QR code by email.
2. Open Settings, go to Cellular or Mobile Data, and tap Add eSIM.
3. Scan the QR code and follow the prompts to install the plan.
4. On arriving in Vietnam, set the eSIM as your data line and turn on data roaming for it.

If your Vietnam eSIM will not connect

Most connection problems clear in a minute or two, so work through these in order.

1. Get off the plane and into the arrivals hall, where you’ll pick up a real signal.
2. Toggle airplane mode on and off to force a fresh network search.
3. Confirm the eSIM is set as your data line and that data roaming is switched on for it.
4. Manually select a Vietnam network in Settings if your phone hasn’t picked one.
5. Switch from 5G to 4G LTE in busy areas where the 5G signal is congested.
6. Enter the APN in your settings on some Android phones if data still won’t flow.

If you travel with one phone, save the QR code as a photo before you leave. On iPhone you can long-press it to add the eSIM, and on Android you can scan it from your gallery with Google Lens.

How we compared

We took each provider’s cheapest plan at every size and duration and benchmarked it against the market, comparing 8 providers in total. All prices are in USD and were collected in July 2026, verified against each provider’s own Vietnam pages.

We excluded eSIMply because it mirrors eSIM4 and isn’t an independent competitor, and we left out free-trial tiers. Prices are re-checked on a regular monthly cadence.

Related guides

• Best eSIM for Vietnam: full rankings on coverage, app and support, not just price.
• Best eSIM for Thailand: the companion guide if you’re pairing Vietnam with Thailand.
• Best eSIM for Singapore: handy for a wider Southeast Asia route through Singapore.

About the author

Peter Moore, eSIM Content Writer

Peter has spent years covering mobile telecoms and travel connectivity, testing eSIMs across dozens of destinations. He writes guides built on real pricing and coverage data, so readers can see exactly what they’re paying for and what they’ll get on the ground.