Best eSIM for Vietnam 2026: Complete Guide for Tourists
Planning a trip to Vietnam? One thing you cannot skip is staying connected.
I learned this the hard way during my first trip to Hanoi back in 2019. Landed at Noi Bai at midnight, no data, no way to message my hostel, and the airport WiFi decided to take a nap. Spent 45 minutes wandering around trying to find a SIM kiosk that was still open. Not fun after a 14-hour flight.
Fast forward to 2026, and Vietnam just welcomed a record-breaking 21.2 million international visitors in 2025 — that's more than 20% growth from the previous year, and honestly, the highest number the country has ever seen. Nearly all of them needed data to book Grab rides, find pho spots on Google Maps, and post sunset stories from Ha Long Bay.
But here's the thing: not all eSIMs are built the same. Some get you online but leave you stranded when you need to verify your Grab account. Some promise "unlimited data" but throttle you into dial-up speeds after lunch. And others? They don't even work outside Ho Chi Minh City.
This guide compares ALL major Vietnam eSIM providers so you can choose the best one for your actual trip — not just the cheapest one on paper. We'll look at real networks, real numbers, and real-world problems like whether you can actually call your Airbnb host when the WiFi password doesn't work.
Let's get into it.
Why You Need an eSIM for Vietnam
Look, I get it. Buying a physical SIM card at Tan Son Nhat or Noi Bai Airport feels like the "authentic" travel experience. Stand in line, hand over your passport, watch a guy cut a nano-SIM with scissors. Very local.
But in 2026, that's honestly a waste of your first hour in Vietnam. Here's why an eSIM just makes more sense:
No physical SIM swapping
Your home SIM stays exactly where it is. You don't need to find a paperclip, pop out your tray, and pray you don't drop your SIM into a sewer grate outside the airport. Your Vietnam eSIM lives digitally on your phone alongside your regular number. When you fly home, you just toggle it off. Done.
Your home SIM stays exactly where it is. You don't need to find a paperclip, pop out your tray, and pray you don't drop your SIM into a sewer grate outside the airport. Your Vietnam eSIM lives digitally on your phone alongside your regular number. When you fly home, you just toggle it off. Done.
Instant activation before landing
The best part? You can buy and install your eSIM while you're still eating bad airplane food. Land in Vietnam, turn off airplane mode, and you're connected before the wheels stop rolling. No queues, no language barriers, no "sorry sir, we only take cash" moments.
The best part? You can buy and install your eSIM while you're still eating bad airplane food. Land in Vietnam, turn off airplane mode, and you're connected before the wheels stop rolling. No queues, no language barriers, no "sorry sir, we only take cash" moments.
Avoid overpriced airport kiosks
Airport SIM shops know you're desperate. They'll sell you a "tourist package" with way more data than you need at prices 30-50% higher than what locals pay. I've seen backpackers pay $25 for 10GB at Noi Bai when the same plan costs $8 in the city. With an eSIM, you pay exactly what you see online — no tourist tax.
Airport SIM shops know you're desperate. They'll sell you a "tourist package" with way more data than you need at prices 30-50% higher than what locals pay. I've seen backpackers pay $25 for 10GB at Noi Bai when the same plan costs $8 in the city. With an eSIM, you pay exactly what you see online — no tourist tax.
Keep your home number active
This is the big one for two-factor authentication. Your bank, your email, your WhatsApp — they all still send codes to your home number. With a physical SIM swap, you're either carrying two phones or missing important texts. An eSIM keeps both numbers running on one device.
This is the big one for two-factor authentication. Your bank, your email, your WhatsApp — they all still send codes to your home number. With a physical SIM swap, you're either carrying two phones or missing important texts. An eSIM keeps both numbers running on one device.
If you want to see exactly how our eSIM works before you buy, check out our How It Works page for a step-by-step walkthrough.
What to Look for in a Vietnam eSIM
After testing pretty much every eSIM provider on the market (and getting throttled, dropped, and overcharged in the process), here's what actually matters when you're shopping for a Vietnam eSIM:
Local +84 number (critical for Grab/OTP)
This is where most tourists get burned. Airalo, Holafly, Nomad — they're all data-only. No phone number. No SMS. Sounds fine until you try to sign up for Grab and the app says "please verify your Vietnamese phone number." Suddenly that "cheap" eSIM costs you an extra $20 in overpriced airport taxis because you can't book a ride.
This is where most tourists get burned. Airalo, Holafly, Nomad — they're all data-only. No phone number. No SMS. Sounds fine until you try to sign up for Grab and the app says "please verify your Vietnamese phone number." Suddenly that "cheap" eSIM costs you an extra $20 in overpriced airport taxis because you can't book a ride.
A real local +84 number lets you receive OTP codes, call your driver when he can't find your hostel, and actually function like a local in Vietnam. If your eSIM doesn't include this, you're buying a handicapped connection.
Network: Viettel vs Vinaphone vs Mobifone
Vietnam has three main carriers, and the difference is massive:
Vietnam has three main carriers, and the difference is massive:
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Viettel: Owned by the Ministry of Defence and covers about 95% of the country. This is the only network that keeps signal on the Ha Giang Loop, in the caves of Phong Nha, and on random islands. If you're leaving the cities, Viettel isn't optional — it's mandatory.
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Vinaphone: Solid in Hanoi, Ho Chi Minh City, Da Nang, and the Mekong Delta. Fine if you're sticking to the "Banana Pancake Trail" of hostels and beach bars.
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Mobifone: Good in metro areas, but signal drops fast in rural provinces. I've had Mobifone go completely dead in Sapa while my Viettel-connected friend was streaming 4K video.
Most cheap eSIMs don't tell you which network they use. They just say "local network" and connect you to whatever's cheapest for them. Spoiler: it's usually not Viettel.
Data allowance & speed
"Unlimited data" sounds amazing until you read the Fair Use Policy. Some providers throttle you to 2G speeds after 2GB per day. In 2026, 2G won't even load a Google Maps route. Look for either:
"Unlimited data" sounds amazing until you read the Fair Use Policy. Some providers throttle you to 2G speeds after 2GB per day. In 2026, 2G won't even load a Google Maps route. Look for either:
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A high hard cap (20GB+ for a 2-week trip), or
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Truly unlimited with transparent throttling policies
Also check if it's 4G/LTE or 5G-ready. Vietnam rolled out 5G in major cities in late 2024, so a 5G-capable eSIM actually matters in HCMC and Hanoi.
Hotspot support
Traveling with a partner? Working remotely from a cafe in Da Nang? You'll want to tether your laptop or share data with your friend's phone. Some providers (looking at you, Holafly) cap hotspot at 500MB per day or disable it entirely. Make sure your plan explicitly allows tethering.
Traveling with a partner? Working remotely from a cafe in Da Nang? You'll want to tether your laptop or share data with your friend's phone. Some providers (looking at you, Holafly) cap hotspot at 500MB per day or disable it entirely. Make sure your plan explicitly allows tethering.
Price vs value
The cheapest eSIM isn't always the best deal. A $15 data-only eSIM that forces you to buy a separate physical SIM for Grab verification ends up costing $30 and wasting an hour of your vacation. Factor in the total cost of staying actually connected, not just "technically online."
The cheapest eSIM isn't always the best deal. A $15 data-only eSIM that forces you to buy a separate physical SIM for Grab verification ends up costing $30 and wasting an hour of your vacation. Factor in the total cost of staying actually connected, not just "technically online."
Learn more about why the local number matters on our Local Number page.
Skip the queue — activate before you land.
Vietnam eSIM Comparison Table
Here's the side-by-side that actually matters. I tested these all personally across Hanoi, Ho Chi Minh City, Da Nang, and a random rice terrace in Mu Cang Chai in April 2026.
Get Your Vietnam eSIM Now →
| Feature | TadiSim | Airalo | Holafly | Saily | Nomad | Jetpac |
|---|---|---|---|---|---|---|
| Starting Price | $12.90 | $4.50 | $6.90/day | $5.90 | $5.00 | $4.00 |
| Data | 10GB - Unlimited | 1GB - 20GB | "Unlimited"* | 3GB - 20GB | 1GB - 20GB | 1GB - 10GB |
| Local +84 Number | ✅ Yes | ❌ No | ❌ No | ❌ No | ❌ No | ❌ No |
| Grab/OTP Support | ✅ Full SMS | ❌ Not supported | ❌ Not supported | ❌ Not supported | ❌ Not supported | ❌ Not supported |
| Hotspot/Tethering | ✅ Unlimited | ✅ Yes | ⚠️ 500MB/day cap | ✅ Yes | ✅ Yes | ✅ Yes |
| Network | Viettel 4G/5G | Viettel 4G | Viettel/Vina/Mobi | Viettel 4G | Viettel 4G | Viettel 4G |
| Free Calls | ✅ Included | ❌ No | ❌ No | ❌ No | ❌ No | ❌ No |
| Support | 24/7 Live Chat | App/email | App/email | App/email | App/email | |
| Activation | Before landing | Before landing | Before landing | Before landing |
testing, I noticed significant throttling after 3-4GB in a single day.
Bottom line: Every provider except TadiSim is data-only. If you just need Instagram and Maps, they're fine. If you need to actually live in Vietnam for 2 weeks — book rides, verify apps, call restaurants — the local number isn't a nice-to-have. It's essential.
Compare all our plans directly on the TadiSim Comparison page.
Detailed Reviews of Each Provider
Airalo (Moshi: Xin Chao)
Airalo is the biggest name in eSIM travel, and I'll give them credit — they're reliable. I've used Airalo in probably 30 countries, and the activation process is always smooth.
For Vietnam, they run on Viettel's 4G network, which means solid coverage in cities and decent signal in rural areas. Their pricing starts at just $4.50 for 1GB/7 days, which is perfect if you're only in Hanoi for a weekend.
The catch? It's data-only. No phone number. No SMS. No calls.
I used Airalo for a 5-day trip to Ho Chi Minh City last year. Worked great for Maps and WhatsApp. Then I tried to order GrabFood at midnight from my hotel in District 1. The app asked for a Vietnamese number to verify my account. I tried using my UK number — never got the SMS. Ended up walking to a Circle K for instant noodles.
If you're only doing touristy stuff with pre-booked transport, Airalo is fine. If you need to function independently in Vietnam, it's incomplete.
Holafly (Unlimited Data)
Holafly markets hard on "unlimited data," and for heavy streamers or digital nomads uploading video content, that sounds like a dream.
I tested their 10-day plan on a trip down the coast from Hanoi to Hoi An. The data itself was solid — 5G in cities, 4G most other places. They actually switch between Viettel, Vinaphone, and Mobifone depending on signal strength, which is a nice touch.
But the problems stack up fast:
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No hotspot — well, technically 500MB/day. That's one Zoom call and you're done.
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No local number — same Grab problem as Airalo.
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Speed throttling — After about 3-4GB of usage in a single day, my speeds dropped to around 3-5 Mbps. Not unusable, but definitely not "unlimited 5G."
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Price — At $36.90 for 10 days, it's nearly 3x the cost of a capped plan from other providers.
Holafly makes sense if you're a YouTuber who needs to upload 4K footage from a jungle lodge and doesn't care about calls. For the average traveler? You're paying premium prices for features you don't need while missing the ones you do.
TadiSim (Local Number + Data)
Full disclosure: yeah, I work with these guys. But I also actually use their eSIM every time I'm in Vietnam now, because the alternative is annoying.
What makes TadiSim different is that it's not just data — you get a real Vietnamese +84 phone number with full SMS and voice capability. That means:
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Grab registration works immediately
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You receive OTPs from banks, apps, and your hostel
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You can call your driver when he's circling the block and can't find you
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Free incoming calls, and enough outgoing credit to call a restaurant or your tour operator
The data runs on Viettel's 4G/5G network, so coverage is as good as it gets. I've had signal on a motorbike in the middle of nowhere between Da Lat and Nha Trang. My friends on other eSIMs? Searching for signal while I was booking our next hostel.
Hotspot is fully unlimited, which saved my butt in a coworking space in Da Nang when their WiFi died during a client call.
Pricing starts at $12.90 for 10GB/15 days, which includes the local number and calls. When you factor in not needing to buy a separate SIM for Grab, it's actually cheaper than the "budget" options.
See our full range of plans on the TadiSim Products page.
Saily, Nomad, and Jetpac (Brief Mentions)
These three are basically variations on the Airalo theme. Saily has slightly better pricing for mid-range data plans. Nomad has a slick app interface. Jetpac is the cheapest per-gigabyte if you're a light user.
They all share the same fundamental flaw: data-only, no local number.
I've tested all of them in Vietnam, and they perform fine as pure data connections. Saily had slightly better speeds in Hanoi Old Quarter than Airalo in my testing. Nomad's app makes it really easy to top up. Jetpac... well, it's cheap.
But none of them solve the Grab problem. None of them let you receive that OTP from your bank when they flag your foreign card buying train tickets. They're half a solution, and in 2026, half a solution isn't enough.
How to Install Your Vietnam eSIM
One of the biggest fears I hear from travelers is "what if I mess up the installation?" Relax. It's actually easier than connecting to airport WiFi. Here's exactly how to do it:
iPhone Installation (iOS 15+)
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Buy your eSIM — Complete your purchase on tadisim.com. You'll get a QR code and activation details via email within 2 minutes.
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Open Camera — Point your camera at the QR code. A notification pops up saying "Cellular Plan Detected." Tap it.
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Add the plan — Your phone asks if you want to add the eSIM. Confirm. You can label it "Vietnam" so you don't confuse it with your home line.
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Turn it on when you land — Keep it off during your flight. When you land in Vietnam, go to Settings > Cellular > Cellular Plans and toggle the Vietnam eSIM on. Make sure "Data Roaming" is enabled for that plan.
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Wait 30 seconds — You should see "Viettel" or your carrier name appear in the top corner. You're online.
Pro tip: Take a screenshot of your QR code before you fly. If your email app has issues, you can still scan it from your Photos.
Android Installation (Samsung, Google Pixel, etc.)
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Buy your eSIM — Same process. Check your email for the QR code.
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Settings > Connections > SIM Card Manager — (Exact path varies slightly by brand, but it's always under Connections or Network & Internet.)
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Add eSIM — Tap "Add Mobile Plan" then "Scan Carrier QR Code."
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Scan and confirm — Your phone downloads the profile. Label it "Vietnam."
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Activate on arrival — Toggle it on when you land, enable data roaming, and select it as your active data plan.
Troubleshooting
"No service" after activation?
Make sure your phone is unlocked. If you bought your phone on a carrier contract (especially in the US), it might be locked. Call your home carrier before you travel — they usually unlock it for free if your contract is old enough.
Make sure your phone is unlocked. If you bought your phone on a carrier contract (especially in the US), it might be locked. Call your home carrier before you travel — they usually unlock it for free if your contract is old enough.
"eSIM installed but no internet?"
Check that Data Roaming is turned ON for the Vietnam plan. iPhones especially default it to off. Also make sure you didn't accidentally leave your home SIM as the "Data" line — your home carrier will charge roaming fees instead.
Check that Data Roaming is turned ON for the Vietnam plan. iPhones especially default it to off. Also make sure you didn't accidentally leave your home SIM as the "Data" line — your home carrier will charge roaming fees instead.
"Grab says my number is invalid?"
This happens with data-only eSIMs. If you're using TadiSim, make sure you've selected the Vietnamese number as your default voice line in settings. If you're using Airalo/Holafly... well, that's expected. You'll need a different solution.
This happens with data-only eSIMs. If you're using TadiSim, make sure you've selected the Vietnamese number as your default voice line in settings. If you're using Airalo/Holafly... well, that's expected. You'll need a different solution.
Slow speeds?
Restart your phone. Seriously, 90% of speed issues fix with a restart. If you're in a very rural area, check if you're on 3G — some mountain areas only have older towers.
Restart your phone. Seriously, 90% of speed issues fix with a restart. If you're in a very rural area, check if you're on 3G — some mountain areas only have older towers.
FAQ
Do I really need a local Vietnamese number?
If you're only visiting for 2-3 days and have everything pre-booked, probably not. But for anything longer, or if you plan to use Grab, book tours, or eat at places that require reservations via phone? Absolutely yes. The number of apps and services that require Vietnamese SMS verification in 2026 is only growing.
If you're only visiting for 2-3 days and have everything pre-booked, probably not. But for anything longer, or if you plan to use Grab, book tours, or eat at places that require reservations via phone? Absolutely yes. The number of apps and services that require Vietnamese SMS verification in 2026 is only growing.
Will my eSIM work outside major cities?
Depends on the network. Viettel-backed eSIMs (like TadiSim and Airalo) work almost everywhere. Others that run on Mobifone or Vinaphone might drop signal in rural provinces. If you're doing the Ha Giang Loop or visiting Phong Nha, Viettel is basically mandatory.
Depends on the network. Viettel-backed eSIMs (like TadiSim and Airalo) work almost everywhere. Others that run on Mobifone or Vinaphone might drop signal in rural provinces. If you're doing the Ha Giang Loop or visiting Phong Nha, Viettel is basically mandatory.
Can I use my Vietnam eSIM in other countries?
No. Vietnam-specific eSIMs only work in Vietnam. If you're doing a multi-country Southeast Asia trip, you'll need separate eSIMs for each country or a regional Asia plan.
No. Vietnam-specific eSIMs only work in Vietnam. If you're doing a multi-country Southeast Asia trip, you'll need separate eSIMs for each country or a regional Asia plan.
What happens if I run out of data?
With TadiSim, you can top up directly through the website without installing a new eSIM. Most other providers require you to buy a whole new plan and reinstall. Keep that in mind if you're a heavy data user.
With TadiSim, you can top up directly through the website without installing a new eSIM. Most other providers require you to buy a whole new plan and reinstall. Keep that in mind if you're a heavy data user.
Is 5G actually available in Vietnam?
Yes, in Hanoi, Ho Chi Minh City, Da Nang, and some parts of Nha Trang and Hai Phong. Viettel has the most extensive 5G rollout. Don't expect 5G on a remote island, but in cities, you'll definitely notice the difference when uploading photos or video calling home.
Yes, in Hanoi, Ho Chi Minh City, Da Nang, and some parts of Nha Trang and Hai Phong. Viettel has the most extensive 5G rollout. Don't expect 5G on a remote island, but in cities, you'll definitely notice the difference when uploading photos or video calling home.
Can I keep my WhatsApp number?
Yes. WhatsApp is tied to your home phone number, not your data connection. Your eSIM just provides internet — your WhatsApp stays exactly the same.
Yes. WhatsApp is tied to your home phone number, not your data connection. Your eSIM just provides internet — your WhatsApp stays exactly the same.
What if my phone doesn't support eSIM?
You'll need a physical SIM. You can buy one at the airport or any Viettel store in the city. Bring your passport — it's legally required for SIM registration in Vietnam.
You'll need a physical SIM. You can buy one at the airport or any Viettel store in the city. Bring your passport — it's legally required for SIM registration in Vietnam.
After testing pretty much every option on the market, the math is simple. If you just need to post Instagram stories and check Google Maps, any data-only eSIM will get you by. But if you actually want to travel through Vietnam — book Grab rides at midnight, verify your banking apps, call your tour guide when you're lost in the Old Quarter — you need a local number.
For most travelers, we recommend TadiSim because it's the only popular eSIM that gives you both high-speed Viettel data AND a real Vietnamese +84 number with voice and SMS. No workarounds. No "almost works." Just actual connectivity that functions like a local's phone.
Don't spend your first day in Vietnam standing in airport SIM lines or arguing with taxi drivers because your eSIM can't book a ride. Get connected before you land.
