eSIM for Vietnam: Prepaid Mobile Data for Your Trip
A Vietnam eSIM connects you to local networks without a physical card. Install it before your flight and activate data when you land.
Prepaid eSIM for Vietnam
- Install by QR code before departure, activates on arrival
- Keep your own number for calls and WhatsApp
- Hotspot sharing allowed, top up from the app
Scan with your phone camera to open the app
How an eSIM works in Vietnam
An eSIM is a digital SIM profile stored in your phone. You buy and install it through an app, then activate it when you arrive. No hunting for SIM card shops in the airport, no queues, no passport registration forms. The provider we use connects to Vinaphone and Viettel networks, which together cover most of the country including Hanoi, Ho Chi Minh City, Da Nang, and tourist areas along the coast.
- Download the eSIM app and pick a Vietnam data plan that matches your trip length.
- Install the eSIM profile by scanning the QR code over Wi-Fi before you leave home. This step takes about two minutes.
- When you land in Vietnam, turn on data roaming for the eSIM line and set it as your default data line. Your home SIM stays active for calls and texts.
- Top up or switch plans directly in the app if you need more data during your trip.
Coverage and networks in Vietnam
The eSIM connects to two major Vietnamese operators: Vinaphone and Viettel. Both run LTE and 5G networks, and your phone will switch between them depending on signal strength. Viettel has the widest reach overall, while Vinaphone is strong in urban centres and tourist zones.
| Operator | Technology | Where it is strongest |
|---|---|---|
| Vinaphone | LTE, 5G | Hanoi, Ho Chi Minh City, Da Nang, Nha Trang, Phu Quoc, coastal resorts |
| Viettel | 3G, LTE, 5G | Nationwide, including Sapa highlands, Mekong Delta, central highlands, rural provinces |
In cities and along Highway 1, you will have fast LTE or 5G most of the time. In the northern mountains near the Chinese border, expect 3G or patchy LTE. Remote islands and deep valleys in the central highlands sometimes drop to edge-of-network speeds. Your phone needs 5G hardware, and the plan must support it - check the plan page for details.
Which plan for which trip
Data needs depend on how long you stay and what you do. Casual map checks and messaging use less than a gigabyte a day. Video calls, uploading photos, and streaming music eat more.
| Trip type | Days | Typical usage | Suggested data |
|---|---|---|---|
| Weekend city break | 3-4 | Maps, messaging, restaurant lookups | 3-5 GB |
| One week | 7 | Navigation, social media, occasional video calls | 7-10 GB |
| Two weeks | 14 | Regular photo uploads, streaming, work emails | 15-20 GB |
| One month | 30 | Remote work, video streaming, daily calls | 30 GB or unlimited daily |
Plans start from $0.93 per GB. If you use data heavily every day, an unlimited daily plan from $1.90 per day can work out simpler than tracking gigabytes. Check the plan page for any fair-use limits or throttling after a certain amount.
eSIM vs a local SIM card in Vietnam
You can buy a tourist SIM at Tan Son Nhat or Noi Bai airport, or in any Viettel or Vinaphone shop in the city. Here is what that process involves compared to an eSIM.
Airport kiosks after customs, or branded stores in malls and on main streets. Not every convenience store sells tourist SIMs.
You need your passport. The shop assistant will photocopy it or scan the data page, then register the SIM under your name.
Staff at airport counters speak basic English. In smaller towns, expect hand gestures and Google Translate. The process takes ten to twenty minutes if the shop is busy.
Install at home in under two minutes, no paperwork, no airport queue. You land and switch on data roaming. Done.
A local SIM can be slightly more economical on a very long stay, but the time saved with an eSIM usually matters more on a holiday. Read the full comparison on our eSIM vs local SIM page.
Phone compatibility and setup before you fly
Not every phone supports eSIM. Most iPhones from the XS onwards do, as do recent Samsung Galaxy, Google Pixel, and other flagship Android models. Your phone must also be unlocked - if it is tied to a carrier contract, ask them to unlock it before you travel.
Pre-flight checklist:
- Confirm your phone is unlocked and eSIM-capable (check our device list).
- Install the eSIM profile over Wi-Fi at home. Do not wait until the airport.
- Save a screenshot of the QR code or write down the activation code, just in case you need to reinstall.
- Label the eSIM line clearly in your phone settings - "Vietnam data" or similar - so you know which line to enable.
- Keep your home SIM active if you want to receive calls or SMS on your usual number.
Once installed, the eSIM sits dormant until you turn on data roaming for that line. When you land, go into Settings, find the Vietnam eSIM line, and flip the roaming switch. Set it as your default data line, and leave your home SIM on for voice if you need it.
Staying connected in Vietnam: practical tips
Vietnam does not block major Western services. WhatsApp, Facebook, Instagram, and Google Maps all work normally. You do not need a VPN for everyday browsing, though some travellers use one out of habit.
Download offline maps for Hanoi, Ho Chi Minh City, and any provinces you plan to visit. Google Maps lets you save regions for offline navigation, which is useful in rural areas where signal drops. Grab, the local ride-hailing app, works well in cities and is less expensive than street taxis.
Vietnamese power sockets are Type A, C, or D. Bring a universal adapter or buy one in a supermarket for a couple of dollars. A power bank is handy on long bus rides through the mountains or overnight trains, where charging points are hit-and-miss.
If your eSIM stops working, restart your phone first, then check that data roaming is on for the correct line. Most connection problems come from accidentally leaving roaming off or selecting the wrong SIM for data. For detailed troubleshooting steps, see our eSIM troubleshooting guide.
Other destinations in Southeast Asia
If you are visiting more than one country in the region, a multi-country Southeast Asia eSIM plan can be more practical than buying separate profiles. It covers Thailand, Vietnam, Indonesia, Malaysia, Cambodia, Laos, and Brunei under one data allowance, so you do not need to switch plans at each border.
Single-country plans usually offer better value if you spend most of your time in Vietnam. Check the regional plan pricing if your itinerary includes more than two Southeast Asian countries.
Frequently asked questions
Do I need to pay a deposit or register with my passport to activate a Vietnam eSIM?
No deposit and no passport registration. You buy the plan in the app, install the eSIM profile, and activate it when you land. The provider handles the connection to Vinaphone and Viettel networks without any paperwork on your side.
When does the validity period of my Vietnam eSIM plan start counting down?
The countdown starts the moment your phone connects to a Vietnamese network for the first time. Installing the eSIM at home does not start the clock. If you buy a seven-day plan, you have seven days from that first connection, not from the purchase date.
Can I use my Vietnam eSIM as a hotspot to share data with other devices?
Hotspot support depends on the specific plan. Some allow it without restrictions, others may limit or disable tethering. Check the plan page for hotspot terms before you buy if you need to share your connection with a laptop or tablet.
Will I have a Vietnamese phone number for making voice calls with this eSIM?
No. The eSIM is data-only. You can make voice calls through WhatsApp, Telegram, Zalo, or FaceTime over the data connection. Your original phone number stays active on your home SIM if you leave that SIM installed.
Does the Vietnam eSIM support 5G networks in Hanoi and Ho Chi Minh City?
Both Vinaphone and Viettel run 5G in major cities. Your phone must have 5G hardware, and the plan must include 5G access - check the plan page for confirmation. If your device or plan does not support it, you will connect to LTE instead.
What should I do if my eSIM does not connect to a network when I arrive in Vietnam?
Restart your phone first. Then open Settings, find the Vietnam eSIM line, and make sure data roaming is turned on and that line is set as your default for mobile data. If it still does not work, toggle Airplane mode on and off to force a network search. For more help, see our troubleshooting guide.
Get your Vietnam eSIM now
Install your data plan before you fly, activate it when you land, and stay connected from Hanoi to the Mekong Delta. No airport queues, no passport forms, no hunting for a SIM card shop.
Get Vietnam eSIM→