Best eSIM for Vietnam in 2026: Definitive Buyer's Guide
Compare the best travel eSIMs for Vietnam in 2026: real 2026 prices, data allowances, unlimited plans and which local network each provider uses, from HOLASIM, Holafly, Ubigi, Saily, Nomad and Airalo.
HOLASIM is the best overall eSIM for Vietnam in 2026, offering global coverage in 200+ destinations, including unlimited data plans, a never-expiring eSIM, and 24/7 human support in multiple languages, all starting from an affordable ~USD 1.70.
Vietnam is one of the cheapest countries in Asia to stay connected in: 4G is genuinely fast in Hanoi, Ho Chi Minh City, Da Nang and Hoi An, and 5G keeps expanding. But you will also spend time outside the cities — Sapa, the Ha Giang loop, the Mekong Delta — where coverage from Viettel, VinaPhone, MobiFone and Vietnamobile differs sharply, so which network your eSIM rides on matters.
The best eSIM for Vietnam in 2026
Best overall: HOLASIM
Price: from ~USD 1.70 · Unlimited: Yes · Devices: iOS/Android
Reasons to buy:
- Global coverage in 200+ destinations, including Vietnam.
- Unlimited data plans alongside cheaper fixed-data options.
- The eSIM never expires – install once, keep it for life, just top up each trip.
- 24/7 support by real humans in English, Spanish and Portuguese.
- Instant eSIM activation via QR code.
Reasons to avoid:
- Unlimited plans are pricier than fixed-data alternatives.
HOLASIM wins for a reason unrelated to any single price: the eSIM is a permanent asset. Install it once and it never expires — top up a Vietnam plan on landing in Hanoi, then a Europe plan on the same profile months later. Entry pricing from ~USD 1.70 means a two-day stopover does not force a 30-day plan, and support is answered 24/7 by real people.
Best for unlimited data: Holafly
Price: from ~USD 11.90 · Unlimited: Yes · Devices: iOS/Android
Reasons to buy:
- Genuinely unlimited data, with no gigabyte counter to watch.
- Durations from ~3 to 30 days, and a mature onboarding flow.
- Runs on VinaPhone (VNPT), with 5G in the main cities.
Reasons to avoid:
- Expensive: ~USD 27.50 for 7 days, ~USD 73.90 for 30 days.
- Data-only, and hotspot sharing is capped near 1 GB per day.
Holafly's Vietnam catalogue is unlimited-only, which makes it the simplest possible purchase: pick your days, install, forget about it. If you stream on night buses and video-call home nightly, that is worth paying for — but a month costs roughly double Ubigi's unlimited plan, and the tethering cap rules out laptop work.
Best value per gigabyte: Ubigi
Price: from ~USD 10.90 · Unlimited: Yes · Devices: iOS/Android
Reasons to buy:
- Strong volume pricing: ~USD 12.90 for 10 GB / 30 days, ~USD 36.90 for 50 GB.
- Unlimited from ~USD 24.90 for 7 days and ~USD 54.90 for 30 days.
- Native eSIM support on many laptops, tablets and connected cars.
Reasons to avoid:
- No sub-USD 5 plan for short trips.
- Fair-use policy on unlimited plans is not clearly published.
Ubigi is the quiet value champion here. Per gigabyte, ~USD 12.90 for 10 GB over a month is hard to beat from a tier-one provider, and the 50 GB tier makes Vietnam effectively unlimited for under USD 40. The weak spot is the cheap end: for a 48-hour layover, Saily costs less.
Best budget pick: Saily
Price: from ~USD 3.99 · Unlimited: Yes · Devices: iOS/Android
Reasons to buy:
- ~USD 3.99 for 1 GB / 7 days and ~USD 7.99 for 3 GB / 30 days.
- No restrictions on hotspot use, unlike several rivals.
- Built by Nord Security, with a clean app and security extras.
Reasons to avoid:
- Does not disclose which Vietnamese carrier it uses.
- Unlimited tier (from ~USD 48.99) is beaten by Ubigi.
Saily is the easy pick for light users and short stays: a 1 GB week at ~USD 3.99 covers maps, Grab and messaging if you lean on café Wi-Fi, and unrestricted tethering is a real edge over Holafly. What it will not tell you is which local network you land on, making rural performance a lottery.
Best for heavy data users: Nomad
Price: from ~USD 4 · Unlimited: Yes · Devices: iOS/Android
Reasons to buy:
- ~USD 39 for 50 GB / 30 days, the best big-bucket price we tracked.
- Multi-network access across Vietnamobile, MobiFone and VinaPhone.
- Hotspot supported, and plans activate up to 60 days after purchase.
Reasons to avoid:
- Unlimited plans throttle to ~512 kbps after the daily allowance.
- Chat and email support only, no phone channel.
Nomad is the value pick for people who actually use data: ~USD 10 for 5 GB, ~USD 17 for 10 GB and ~USD 39 for 50 GB over 30 days, plus three local networks. Skip its unlimited tiers — past the daily allowance, ~512 kbps is uncomfortable for ride-hailing and maps.
Best app experience: Airalo
Price: from ~USD 11.50 · Unlimited: Yes · Devices: iOS/Android
Reasons to buy:
- The most polished app in the category, with excellent usage tracking.
- Local, regional and global plans in one account.
- Unlimited Vietnam plans from ~USD 11.50 (3 days) to ~USD 69 (30 days).
Reasons to avoid:
- Runs on VNPT/VinaPhone only now, having dropped Viettel — weaker rural reach.
- Unlimited plans throttle to ~1 Mbps past a daily cap near 3 GB.
Airalo is still the default for many travellers, and the app is why: nothing else makes it as painless to check remaining data or juggle destinations. The Vietnam caveat is the network change — VinaPhone-only weakens it exactly where Viettel dominates. With prices above Nomad and Ubigi, it is a convenience buy.
Vietnam eSIM comparison 2026
| Provider | From | Unlimited | Example plan | Local network | Hotspot |
|---|---|---|---|---|---|
| HOLASIM | ~USD 1.70 | Yes | Fixed and unlimited, never-expiring eSIM | Multi-network | Yes |
| Holafly | ~USD 11.90 | Yes (only) | ~USD 27.50 / 7 days | VinaPhone | ~1 GB/day |
| Ubigi | ~USD 10.90 | Yes | ~USD 12.90 / 10 GB / 30 days | VinaPhone | Yes |
| Saily | ~USD 3.99 | Yes | ~USD 10.99 / 5 GB / 30 days | Undisclosed | Yes |
| Nomad | ~USD 4 | Yes | ~USD 39 / 50 GB / 30 days | Vietnamobile, MobiFone | Yes |
| Airalo | ~USD 11.50 | Yes | ~USD 27 / 7 days unlimited | VinaPhone (VNPT) | Yes |
Indicative 2026 prices; confirm before you buy.
How to choose
Start with your itinerary, not the price. Sticking to cities and coastal towns? Almost any provider works, so optimise for cost — Saily for a few days, Ubigi or Nomad for a fortnight. Heading into the northern mountains? Favour providers that name multiple carriers.
Then decide whether you really need unlimited. Most travellers use 5–15 GB a month here because Wi-Fi is everywhere and fast, so a 10 GB fixed plan at ~USD 13–18 beats a ~USD 55–74 unlimited plan unless you tether a laptop.
How to install an eSIM in Vietnam
- Check compatibility: most iPhones from XR onwards, Pixel 3 and later and recent Samsung Galaxy models support eSIM, and the phone must be carrier-unlocked.
- Buy before you fly, while you still have reliable Wi-Fi at home.
- Install the profile via the emailed QR code or the in-app link. Installation needs Wi-Fi; activation does not.
- Label it clearly, for example "Vietnam", so you can find it in Settings later.
- On arrival, turn on the eSIM line, enable data roaming for that line only and set it as your data line. Keep your home SIM on for calls and SMS.
- If nothing connects, toggle Airplane mode and check your provider's APN before buying another plan.
Coverage and networks in Vietnam
Four networks matter. Viettel is the largest, with the widest rural and mountain footprint — the one you want in Ha Giang, Sapa and the outer Mekong. VinaPhone (VNPT) is what most travel eSIMs use: strong in cities and tourist centres. MobiFone is good in the south; Vietnamobile is supplementary.
5G is live and densest in Hanoi, Ho Chi Minh City, Da Nang and Can Tho, but most travel eSIMs deliver 4G/LTE at speeds fine for maps, ride-hailing and video calls — treat 5G as a bonus, not a deciding factor.
FAQ
Do eSIMs work everywhere in Vietnam?
They work wherever the host network has coverage, which is most of the populated country. Expect gaps in the far northern mountains and on some Mekong islands.
How much data do I need for two weeks in Vietnam?
For most travellers 5–10 GB is enough, since Wi-Fi is free and fast in nearly every café and hotel. Budget 15–20 GB if you upload video daily or work remotely.
Can I use my eSIM as a hotspot in Vietnam?
Usually yes — Saily, Nomad, Ubigi, Airalo and HOLASIM all allow tethering. Holafly caps sharing near 1 GB per day, so it is a poor laptop choice.
Will I get a Vietnamese phone number?
No. These travel eSIMs are data-only: keep your home number on your physical SIM and use WhatsApp, Zalo or FaceTime. For local SMS verification, buy a prepaid SIM on arrival.
Is Grab usable on a travel eSIM?
Yes, and it is one of the main reasons to buy one, since Grab needs only a light, steady connection. Watch throttled unlimited plans: at ~512 kbps it gets sluggish.
Should I buy the eSIM before or after arriving?
Before. Install it at home over Wi-Fi so activation happens on landing and you leave the airport already online.