How do I know if my phone is compatible with a Vietnam eSIM?

Your smartphone must be carrier-unlocked and natively support eSIM technology, which includes most modern iPhones (iPhone XS and newer) and newer Android models. You can check your device settings for an 'Add eSIM' or 'Add Cellular Plan' option before purchasing. If your phone is locked to a specific home carrier, the eSIM will not work in Vietnam.

How much data do I need for a trip to Vietnam?

For standard navigation on Grab, Google Maps, and daily messaging, 1 GB to 2 GB per day is usually sufficient. If you plan to stream video, upload photos to social media, or work remotely, consider 3 GB per day or an unlimited plan. Free Wi-Fi is also widely accessible in Vietnamese cafes, restaurants, and hotels.

When should I install my Vietnam eSIM?

We recommend scanning the QR code and installing the eSIM onto your phone the day before travel while connected to a stable Wi-Fi network. Keep the eSIM line turned off until you land in Vietnam so the validity period does not start early. Upon arrival at airports like Hanoi (HAN) or Ho Chi Minh City (SGN), simply turn on the eSIM line and enable Data Roaming.

Will my WhatsApp, Instagram, and iMessage still work with a Vietnam eSIM?

Yes, all your messaging and social media applications will function normally with a Vietnam eSIM. WhatsApp and iMessage will remain linked to your primary phone number, so you do not need to re-verify your account. The eSIM simply provides the local internet connection required to run these apps seamlessly.

Does the Vietnam eSIM include a local phone number?

Most travel eSIMs for Vietnam are data-only packages and do not come with a local (+84) phone number for traditional voice calls or SMS. However, you can make internet-based calls and send messages through apps like WhatsApp, Zalo, Telegram, or Skype. For ride-hailing apps like Grab, you can register using your home phone number before you depart.

What should I do if my eSIM is not connecting to data in Vietnam?

First, verify that Data Roaming is switched ON for your eSIM profile in your phone's network settings. Next, ensure the eSIM is set as your designated Mobile Data source and toggle Airplane Mode on and off to reset the connection. If you still have no signal, manually select a supported local network such as Viettel or Vinaphone in your cellular settings.

Is a Vietnam eSIM cheaper than using my home carrier's international roaming?

Yes, a Vietnam eSIM is significantly cheaper than standard daily roaming rates from home carriers, which often cost $10 to $15 per day. eSIM packages offer prepaid local data rates starting at just a few dollars for your entire trip duration. This eliminates the risk of unexpected bill shock while giving you high-speed local 4G/5G coverage.

Travel guides·Vietnam

20 fun facts about Vietnam every traveller should know

Vietnam packs mountains, beaches, mega-cities, and world-heritage old towns into a country the shape of a long dragon. Here's what to know before your first trip.

Fun facts about Vietnam

1
Motorbikes rule the road
There are over 45 million motorbikes in Vietnam. Crossing the street is done slowly and predictably — don't stop halfway.
2
Egg coffee is a Hanoi original
Cà phê trứng blends whipped egg yolk and condensed milk over dark coffee. Try it at Café Giảng in Hanoi.
3
Pho is a national breakfast
Locals eat pho in the morning; noodle soup for breakfast is the norm, not lunch or dinner.
4
3,260 km of coastline
From Ha Long Bay in the north to Phu Quoc island in the south, Vietnam is one of Asia's best beach countries.
5
Ha Long Bay has 1,600+ islands
The UNESCO-listed emerald bay is a bucket-list overnight cruise.
6
Vietnamese uses the Latin alphabet
Thanks to 17th-century missionaries, road signs are easy to read even if pronunciation is tonal.
7
Coffee capital of Asia
Vietnam is the world's second-largest coffee exporter, mostly robusta.
8
Tet is the biggest holiday
Lunar New Year (Jan/Feb) shuts most local businesses for a week.
9
Cash still dominates in markets
Bring small Vietnamese dong notes — ATMs are common but rural stalls prefer cash.
10
Grab is the local ride app
Grab bike rides in Ho Chi Minh City cost a fraction of a taxi.
11
The dong has huge numbers
1 USD ≈ 25,000 VND. Millions of dong are everyday amounts.
12
Bún chả is Obama's Hanoi meal
Grilled pork, herbs, rice noodles — the Anthony Bourdain / Obama combo is still served at Bún chả Hương Liên.
13
Sapa's rice terraces are UNESCO-worthy
The northern highlands offer trekking through Hmong and Dao villages.
14
War history is everywhere
The Củ Chi tunnels and War Remnants Museum in HCMC give a moving perspective on modern Vietnamese history.
15
Two-wheel food delivery is 24/7
Almost anything you crave can be delivered by GrabFood or ShopeeFood.
16
Rice is grown on 82% of farmland
Vietnam is the world's third-largest rice exporter after India and Thailand.
17
Bánh mì is a colonial fusion
The crusty baguette is a French legacy; the pâté, pickles and coriander are pure Vietnamese.
18
Water puppetry is a 1,000-year-old art
Hanoi's Thang Long Water Puppet Theatre performs on a knee-deep water stage.
19
The áo dài is the national dress
The elegant silk tunic over trousers is still worn at weddings and Tet.
20
Cao Bang and Ban Gioc rival Iguazu
Northern Vietnam's Ban Gioc waterfall is one of the biggest transnational falls in Asia.

Practical tips for first-time visitors

Get an eSIM before landing — you'll want Grab and Google Translate from the airport.
Cross roads at a steady walking pace; motorbikes flow around you.
Small US dollars (5s and 10s) can be handy in tourist areas.
Don't drink tap water; bottled or filtered only.
Bargain politely in markets; start at ~50% and meet in the middle.

Staying connected in Vietnam

Viettel, Vinaphone and Mobifone provide strong 4G/5G across Vietnam. A travel eSIM works from touchdown at Noi Bai or Tan Son Nhat and lets you order Grab straight from the terminal.

eSIM FAQs for Vietnam

How do I know if my phone is compatible with a Vietnam eSIM?: Your smartphone must be carrier-unlocked and natively support eSIM technology, which includes most modern iPhones (iPhone XS and newer) and newer Android models. You can check your device settings for an 'Add eSIM' or 'Add Cellular Plan' option before purchasing. If your phone is locked to a specific home carrier, the eSIM will not work in Vietnam.
How much data do I need for a trip to Vietnam?: For standard navigation on Grab, Google Maps, and daily messaging, 1 GB to 2 GB per day is usually sufficient. If you plan to stream video, upload photos to social media, or work remotely, consider 3 GB per day or an unlimited plan. Free Wi-Fi is also widely accessible in Vietnamese cafes, restaurants, and hotels.
When should I install my Vietnam eSIM?: We recommend scanning the QR code and installing the eSIM onto your phone the day before travel while connected to a stable Wi-Fi network. Keep the eSIM line turned off until you land in Vietnam so the validity period does not start early. Upon arrival at airports like Hanoi (HAN) or Ho Chi Minh City (SGN), simply turn on the eSIM line and enable Data Roaming.
Will my WhatsApp, Instagram, and iMessage still work with a Vietnam eSIM?: Yes, all your messaging and social media applications will function normally with a Vietnam eSIM. WhatsApp and iMessage will remain linked to your primary phone number, so you do not need to re-verify your account. The eSIM simply provides the local internet connection required to run these apps seamlessly.
Does the Vietnam eSIM include a local phone number?: Most travel eSIMs for Vietnam are data-only packages and do not come with a local (+84) phone number for traditional voice calls or SMS. However, you can make internet-based calls and send messages through apps like WhatsApp, Zalo, Telegram, or Skype. For ride-hailing apps like Grab, you can register using your home phone number before you depart.
What should I do if my eSIM is not connecting to data in Vietnam?: First, verify that Data Roaming is switched ON for your eSIM profile in your phone's network settings. Next, ensure the eSIM is set as your designated Mobile Data source and toggle Airplane Mode on and off to reset the connection. If you still have no signal, manually select a supported local network such as Viettel or Vinaphone in your cellular settings.
Is a Vietnam eSIM cheaper than using my home carrier's international roaming?: Yes, a Vietnam eSIM is significantly cheaper than standard daily roaming rates from home carriers, which often cost $10 to $15 per day. eSIM packages offer prepaid local data rates starting at just a few dollars for your entire trip duration. This eliminates the risk of unexpected bill shock while giving you high-speed local 4G/5G coverage.