Vietnam eSIM
data from $2.59.

If you are searching for an eSIM for Vietnam, buy a data only plan before you fly and it connects on arrival. Slashtel Vietnam plans start from $2.59 and run on Viettel Mobile, Vinaphone, MobiFone and Vietnamobile, with 5G where available. There is no local number, so you keep your home SIM for calls.

Choosing an eSIM for Vietnam

Four things decide whether a Vietnam eSIM works well for your trip: coverage on the main networks, enough data for your days, a validity that matches your stay, and installation before departure. Price matters, but a plan that expires mid trip or runs out in Ha Long Bay is a false saving.

Coverage comes first. Vietnam has four mobile networks and a good eSIM should reach the main ones, so the network is chosen automatically for you as you move. You do not pick an operator or change settings when you cross a province.

Data amount comes second. Think about maps, messaging, translation, booking apps and photo backup, then pick a size with room to spare. Video calls and cloud uploads use far more than text and maps.

Validity comes third. A plan counts in days from activation, so match the duration to your itinerary rather than to the calendar. A two week trip needs a 15 day plan, not a 7 day one.

Hotspot support matters if you carry a laptop or travel with someone who needs to share your connection. Check that the plan allows tethering before you buy.

Finally, install before you fly. Add the eSIM to your phone at home on reliable wifi, label it Vietnam, and leave it switched off until you land. If you are asking which is the best eSIM for Vietnam for your own trip, the answer is the one that covers the networks, fits your days and is already installed when the plane doors open.

Plans and prices for Vietnam

Slashtel sells Vietnam eSIM plans in five data sizes and three durations, starting from $2.59. The table below shows the published sizes and durations. Live prices appear in the Price column and update automatically.

Sizes run from 1GB to 20GB and durations are 7, 15 or 30 days. Choose the combination that covers your trip: a short city break needs little, while a month of moving between Hanoi, Ha Long Bay and Hoi An with regular photo uploads needs more. The plan is data only, so it carries no calls or texts.

Networks and coverage in Vietnam

Vietnam eSIM plans from Slashtel connect to Viettel Mobile, Vinaphone, MobiFone and Vietnamobile, and the network is chosen automatically. You do not need to select an operator, and the eSIM works with 5G where that is available.

The four networks together cover the usual traveller route. In cities such as Hanoi and Ho Chi Minh City you will normally see strong signal. On the move, coverage follows the populated corridors and the roads between them. Ha Long Bay and Hoi An are well served in the towns, while remote stretches of coastline and mountains can be weaker, as anywhere.

Because the network is selected for you, your phone moves between operators as you travel. That is useful on a long route from north to south, where one network may be stronger in one province and another elsewhere. Keep automatic network selection on in your phone settings and let the eSIM do the work.

How much data you need

Match the data size to your trip length and how much you share. These trip types use the published plan sizes as a guide.

• One week: 1GB for 7 days suits light use such as maps, messages and occasional browsing.
• Two weeks: 3GB for 15 days covers a typical Hanoi to Ho Chi Minh City route with daily maps and messaging.
• One month: 3GB for 30 days works for longer stays with modest data use.
• Heavier use: choose 5GB, 10GB or 20GB for 30 days if you upload photos, stream video or use hotspot.

If you plan to work remotely, take video calls or share your connection with a laptop, go up a size. Running out mid trip means buying again, so a little headroom is sensible.

Install it before you fly

Install the Vietnam eSIM at home, before departure, and switch it on after landing. Installation needs an internet connection, so doing it at the airport or on arrival adds stress you can avoid.

Our step by step guide to installing an eSIM on iPhone and Android covers the process. First check that your phone supports eSIM using our compatibility guide. Most recent phones do, but some regional models do not.

When you install, give the eSIM a clear label such as Vietnam. Keep it turned off until you land, then enable it and set it as your mobile data line. Leave your home SIM active for calls and texts, and make sure mobile data on your home line is off so you do not incur charges abroad.

Calls, texts and your home number

The Vietnam eSIM is data only. It has no local phone number and cannot make calls or send SMS. That is normal for travel eSIMs and it is not a limitation for most trips.

WhatsApp, FaceTime and similar apps work over the data connection, so you can call home, message and share photos as usual. Your home SIM stays in the phone for calls and bank codes, which is why you keep it active. Set the Vietnam eSIM as your data line and your home line for voice and texts.

If someone needs to reach you on your usual number, they still can. Just remember that incoming texts to your home SIM may carry roaming charges depending on your home operator, so check that before you travel.

Questions travellers ask about Vietnam

Short answers to the points people check before buying a Vietnam eSIM. The full answers are below.