12 plans from 1GB to 20GB. Buy now, scan the QR, and your data works the moment you land.
It runs on Vietnam's national mobile networks, so the same plan works right across the country, including Hanoi, Ho Chi Minh City, Da Nang, Hoi An and Ha Long Bay. There is nothing extra to buy for a city or island.
Slashtel Vietnam eSIMs start at $2.39 for 1GB over 7 days, across 12 plans. The lowest price per GB is $1.38 on the 20GB plan. A one-week trip costs from $2.39 (1GB). It connects to Viettel Mobile, MobiFone, Vinaphone and Vietnamobile on up to 5G. Prices checked 9 October 2026.
Last checked: September 2026
You step off the plane at Hanoi (HAN), Ho Chi Minh City (SGN) or Da Nang (DAD). The heat hits you, the queue for a taxi is long, and you need to check your hotel address or message the friend who is meeting you. That is the moment you want data working, not a hunt for a SIM stall or a confusing roaming charge.
Slashtel sells a Vietnam eSIM that gives you data from the moment you land. You buy it before you travel, get a QR code by email within a minute, and install it at home on Wi-Fi. It is data only, so no local number, calls or SMS, but WhatsApp calls work over data. There is no contract and no local address needed. Prices start from $2.39. Days start counting only when it first connects at your destination, so you can install it days in advance without losing time.
UK travellers head to Vietnam for two main reasons: backpacking north to south and city breaks. The classic route runs from Hanoi down to Ho Chi Minh City, with stops in Hoi An and Ha Long Bay. A city break might be a few days in Hanoi or Ho Chi Minh City, taking in food, history and markets. Either way, you need data for maps, translation, booking buses and trains, and finding the best banh mi. A data eSIM keeps you connected without hunting for a local SIM or paying high roaming charges.
Indian travellers visit Vietnam for holidays and short business trips. Direct flights from India to Hanoi and Ho Chi Minh City make it an easy escape, and the country is popular for family holidays, honeymoons and group trips. Business travellers might have meetings in Ho Chi Minh City or Hanoi and need to stay reachable on WhatsApp and email. With a data eSIM, you can keep your Indian SIM active for OTPs and calls, while using the eSIM for data.
| Data | Duration | What it covers |
|---|---|---|
| 1GB | 3-5 days | Maps, WhatsApp text, light email. No video. |
| 3GB | 1 week | Maps, WhatsApp calls, occasional social media. |
| 5GB | 2 weeks | Maps, WhatsApp video, some music streaming. |
| 10GB | 1 month | Daily use including video and video calls. |
For a 1 week trip, 3GB is a safe bet for maps, messaging and the odd photo upload. If you are staying for 2 weeks and plan to use WhatsApp video or stream music, go for 5GB. You can always top up online on the same eSIM if you run low.
Grab is the main ride-hailing and food delivery app and needs mobile data. You will use it for cars, motorbike taxis and food delivery. It works well in cities like Hanoi, Ho Chi Minh City and Da Nang, and it needs a data connection to book and track. Without data, you are stuck with street taxis and cash, which is fine but less convenient. Make sure you have data from the moment you land so you can book your first ride.
Mountain routes in the far north can have weak signal between towns. If you are heading to Ha Giang, Sapa or other northern areas, expect gaps in coverage on the road. Download offline maps before you set off, and tell people where you are going. In towns, you will usually get signal back. Do not rely on data for navigation in remote areas; a paper map or offline app is wise.
Install your Vietnam eSIM before you fly, while you are on Wi-Fi at home. The QR code arrives by email within a minute, and you can scan it to add the eSIM to your phone. Follow our installation guide for step by step instructions. Keep your home SIM in the phone for calls and OTPs; the eSIM handles data. If you are from India, see our guide on keeping your Indian SIM active for tips on avoiding roaming charges.
Ready to travel? Browse Vietnam data plans and choose the size that fits your trip. Prices start from $2.39. No contract, no local address, and top ups are done online on the same eSIM. The eSIM is data only, so no local number, calls or SMS, but WhatsApp calls work over data. Hotspot is allowed, so you can share with a laptop or another device.
Last checked: September 2026. Prices and plans are verified on the Slashtel site at the time of writing.
Your phone must be unlocked and eSIM compatible. Most recent iPhones and many Android phones support eSIM. Check your phone settings for eSIM support before you buy. If your phone is locked to a network, it will not work.
Yes. Keep your home SIM in the phone and use the Vietnam eSIM for data. Your Indian or UK SIM stays active for receiving SMS and calls, so bank OTPs still arrive. Just make sure data roaming is turned off on your home SIM to avoid charges.
For a 1 week trip, 3GB is usually enough for maps, WhatsApp and light social media. For 2 weeks, 5GB gives you more room for WhatsApp video and some music streaming. If you plan to work or stream a lot, choose 10GB.
Yes, install it before you fly while you have Wi-Fi at home. The QR code arrives by email within a minute. Once installed, the eSIM only starts counting days when it first connects at your destination.
You will get good coverage in cities like Hanoi, Ho Chi Minh City and Da Nang, and in tourist areas like Hoi An and Ha Long Bay. However, mountain routes in the far north can have weak signal between towns. Coverage is not guaranteed everywhere.
Yes, hotspot is allowed. You can share your data with a laptop or another device. Just remember that using hotspot will use your data faster.
For most trips a 5GB to 10GB data eSIM valid for 30 days is the right size: Slashtel's 5GB plan for Vietnam is $8.69 on Viettel Mobile, MobiFone and Vinaphone. Install it before you fly, keep your home SIM on for calls and bank texts, and top up the same eSIM if you run low.
If your phone supports eSIM, an eSIM is simpler than a local SIM card: nothing to collect at the airport, no passport registration, and your home SIM stays in the phone for calls and OTP texts. A physical SIM only makes sense for long stays where you need a local phone number.
From $2.39 for 1GB valid 7 days, as of 9 October 2026. Longer trips: two weeks from $5.49 (3GB), one month from $5.79 (3GB).
$1.38 per GB on the 20GB plan (30 days, $27.59). Bigger plans usually cost less per GB, so buy the size you expect to use.
Viettel Mobile, MobiFone, Vinaphone and Vietnamobile, with speeds up to 5G where available. The eSIM picks the strongest network automatically.
No. Slashtel eSIMs are data only, with no local number, calls or SMS. WhatsApp and other internet calls work, and your home SIM can stay on for calls and OTP texts.
Validity starts when the eSIM first connects to a network in Vietnam, not when you buy it, so you can buy and install it before you travel.
After payment Slashtel emails a QR code within a minute. Scan it in your phone settings while on Wi-Fi at home, then switch on data roaming for the eSIM when you land.
Yes. Hotspot and tethering are allowed on Slashtel eSIMs.
Pick a plan, pay by card. QR arrives by email within a minute.
Scan the QR on Wi-Fi at home. Takes two minutes. Keep your main SIM in.
Enable data roaming on the Slashtel line. Done, no shops, no queues.