Vietnam tourist SIM: choose an eSIM for data, a local SIM for calls

An Airalo 7-day eSIM can be installed before your flight, so you can open Google Maps and book a ride as soon as you arrive at Noi Bai Airport. At a Viettel counter in the international arrivals area, you can instead register a local mobile subscription with your passport, receive a +84 phone number, and use it for calls within Vietnam. Both options provide internet access, but they work differently when it comes to regular phone calls and SMS messages.

Choose your Vietnam tourist SIM based on what you actually need

Before comparing prices, decide whether you need a Vietnamese phone number. That matters more than whether your phone uses a physical SIM or an eSIM.

A Viettel or VinaPhone eSIM issued as a normal mobile subscription can include a Vietnamese +84 number, regular voice calls, and SMS. By contrast, many international travel eSIMs sold through Airalo, Nomad, or Holafly provide mobile data without traditional calling or SMS services. Look at the services included in the package, not just the word "eSIM" in the product name.

The three types of SIM you should know

International data-only travel eSIM

You buy this online, usually receive installation instructions or a QR code, and connect to a supported Vietnamese mobile network. You can browse the internet and make WhatsApp or FaceTime calls, but you won't receive a local +84 number for ordinary SMS messages.

Vietnamese physical SIM

This is a removable SIM card issued by operators such as Viettel, VinaPhone, or MobiFone. When registered as a mobile subscription with voice and SMS service, it lets you call Vietnamese numbers and receive text messages according to your subscription conditions. A data package can be added separately or included in a bundle.

Vietnamese local eSIM

This provides much the same functionality as a physical local SIM, but the subscription is installed digitally. You still need to register your personal information and complete the required verification process to obtain a local number.

Travelers who only need internet access have little reason to open a new Vietnamese phone number. Anyone who needs local SMS verification should avoid buying a data-only package by accident, even when it advertises 4G, 5G, or unlimited data.

Vietnam eSIM vs physical SIM: what is the difference?

International travel eSIM: best for getting online immediately

The biggest advantage of an international travel eSIM is that you can buy it before leaving home. You select a package, pay online, receive the installation details, and add the eSIM while you still have a reliable Wi-Fi connection.

Once you arrive in Vietnam, you select the new line for mobile data and connect to the supported local network. This works particularly well when flying into Hanoi, Ho Chi Minh City, Da Nang, or Cam Ranh and wanting internet access immediately. There's no hunting for an open mobile shop after landing, and a late-night flight doesn't affect your ability to buy the service.

The drawback is price. International travel eSIMs can cost more than some local data packages offering similar allowances. You also need to configure the eSIM yourself, including selecting the correct mobile data line and enabling data roaming on the travel eSIM when the provider requires it.

Local physical SIM: better when you need a +84 number

A physical SIM makes sense if your phone doesn't support eSIM or you want an independent Vietnamese phone number. It suits travelers staying two to four weeks, frequently contacting bus operators, homestays, delivery services, or local business contacts. You can call an ordinary Vietnamese phone number without requiring the recipient to use WhatsApp or another internet-based calling app.

The main inconvenience is registration. Foreign visitors need valid identification and must complete the applicable subscriber verification procedure. You also have to insert the SIM into your phone.

Local eSIM: combines both benefits

A compatible dual-SIM phone can keep your home-country SIM and add a Viettel eSIM. This allows you to use a Vietnamese number for local communication while keeping your existing number available for accounts and services registered before your trip.

Getting a local eSIM takes more effort than buying a data-only travel eSIM online, though. A Vietnamese phone number still requires subscriber verification. Whether remote registration is available depends on the operator, your device, and the documents you can provide.

Best Vietnam tourist SIM for 7 days: which plan should you buy?

Price alone tells you little about a one-week package. Check whether the data allowance is provided daily or across the entire validity period.

For example, a package offering 5GB total over seven days is very different from one offering 5GB per day. A day of heavy video streaming could exhaust the first package, while the second provides a fresh daily allowance.

The following are 2026 package prices. Prices, eligibility requirements, and promotions may change.

Airalo Vietnam eSIM plans for data-only travelers

Airalo sells the following Vietnam plans.

Airalo's Vietnam eSIM runs on VNPT as its primary network. These data-only packages do not come with a Vietnamese telephone number.

Seven days of maps, restaurant searches, and messaging: 3GB may be enough if your hotel has Wi-Fi and you rarely stream videos over mobile data.

Frequent Instagram use, video calls, and browsing while traveling: 5GB or 10GB gives you more flexibility.

Remote work or using your phone as a hotspot: read the fair usage policy, speed restrictions, and hotspot-sharing conditions before choosing an unlimited plan.

On an eight- or nine-day trip, a seven-day plan will run out before you leave. Choose a package that covers your entire stay, or confirm that you can purchase a top-up or extension.

Viettel tourist SIM and eSIM packages

Viettel sells several tourist eSIM packages. The prices below are package charges, not the all-inclusive cost of opening a new subscription.

Viettel also has a 5G120H plan. Ask a Viettel representative to confirm its data allowance and current package details.

5G60T is worth asking about for a seven-day itinerary because 5GB per day is a generous allowance for ordinary travel use. Before you commit, confirm that the plan is still sold, your subscription is eligible, and you understand the total activation cost.

Included calling minutes have limits too. For example, 30 on-net minutes and 15 off-net minutes are separate allowances. Additional calls are charged according to your subscription's terms.

Does MobiFone offer a 7-day data plan?

Yes. MobiFone's 5G7D add-on costs 70,000 VND for seven days, with 6GB per day and additional conditions relating to TikTok data.

But this is an add-on data package for eligible MobiFone subscribers. It is not a guaranteed all-inclusive tourist SIM price for every foreign visitor. You need an active, eligible MobiFone subscription to add it, and the advertised 70,000 VND doesn't cover the cost of opening a new subscription.

Which plan works best for your itinerary?

A seven-day Hanoi - Ninh Binh - Ha Long Bay trip involving maps, ride-hailing, and messaging is easily covered by an Airalo 5GB/7-day eSIM arranged before departure.

Ha Giang, Cao Bang, and other mountainous areas call for checking Viettel coverage first, at your actual accommodation and along the roads you plan to travel. Good reception in a town center doesn't guarantee a stable signal on every mountain pass.

Travelers crossing Vietnam in 15 days should ask about Viettel's 5G80T package and compare it with international eSIM options if they prefer not to register a local number. A 30-day package with a large allowance is only worth buying when its total cost and conditions are genuinely better for your trip.

Need a Vietnam SIM with calls? Check the service type

Travelers often search for a "Vietnam SIM card with calls" but only compare the advertised gigabytes. That's an easy mistake.

A phone with internet access can make calls through WhatsApp, Messenger, Telegram, or FaceTime, but these are internet-based calls, not traditional mobile calls to ordinary phone numbers. Calling a Vietnamese mobile number or a hotel's landline directly takes a subscription that supports regular voice service.

Calling hotels, bus companies, and drivers

Choose a local prepaid subscription from Viettel, VinaPhone, or MobiFone, either as a physical SIM or an eSIM.

At the counter, confirm three things:

• Does the subscription come with a Vietnamese +84 mobile number?
• Can it make and receive regular mobile calls?
• Does the package include calling minutes, or are calls charged from your account balance?

Some packages advertise large data allowances without including free calling minutes. The underlying subscription can still make calls at standard rates when voice service is enabled. "No included calling minutes" and "no calling functionality" are two different things.

Which Viettel package is suitable for calls?

Among the Viettel packages above, 5G180H includes 30 on-net minutes and 15 off-net minutes, alongside 5GB per day over 30 days. It's a package worth asking about if you need mobile data and some domestic calling time.

First confirm that the associated subscription provides a Vietnamese number, supports receiving SMS, and can be registered with your passport. Also ask for the complete new-subscription price. Someone staying only one week may not need a 30-day package at all.

Two or three calls over a whole trip hardly justify an expensive bundle containing dozens of calling minutes. Ask whether you can use a prepaid voice subscription charged per minute with a separate data package.

Does a Vietnam eSIM have a phone number for OTP verification?

Yes, some do. But not all eSIMs provide a phone number, and that's the detail to check when searching for a "Vietnam eSIM with phone number."

Data-only travel eSIMs don't receive ordinary SMS

Airalo's data-only eSIMs don't support traditional voice calls or SMS. Holafly's standard Vietnam travel eSIM also provides mobile data rather than a local phone number.

You therefore cannot use a data-only eSIM's nonexistent local number to receive a traditional SMS verification code.

Internet messaging apps are a separate matter. You can continue using an existing WhatsApp account over the travel eSIM's internet connection, even if the account was registered with your home-country number.

Can a local Vietnamese SIM or eSIM receive OTP codes?

A properly registered Vietnamese mobile subscription with SMS service can receive messages sent to its number. But being able to receive SMS doesn't guarantee every platform will accept your new number for verification.

For example, your bank may require verification codes to be sent to the number already registered in your customer profile, and buying a new Vietnamese SIM won't change that number.

Whether a new account verifies depends on the platform's rules, the phone number, the subscription status, and the SMS delivery system. Avoid sellers promising that a SIM will definitely work with every bank or online service.

Test your local number before leaving the shop

After activation, ask the staff to show you your new phone number and test its functions.

First, make a short call to another phone. Then ask someone to send an ordinary SMS to your new number. Two successful tests confirm the basic calling and messaging functions of the subscription. That still doesn't guarantee delivery of verification codes from every application, but it helps ensure you haven't purchased a data-only product by mistake.

Can you keep your home SIM for banking OTPs?

Yes, provided your home operator supports receiving SMS while roaming, your subscription remains active, and your phone supports the relevant dual-SIM configuration.

A practical setup is:

• Home SIM: Keep it available for calls and verification SMS.
• Vietnam travel eSIM: Use it for mobile internet.
• Data roaming on your home SIM: Turn it off to avoid unexpected roaming data charges.

Check the roaming call and SMS rates with your home operator. Some providers allow free incoming SMS while roaming, but not every carrier does.

Keeping your existing number for banking verification is often more practical on a seven-day Vietnam trip than changing important accounts to a temporary Vietnamese number.

Where to buy a Vietnam tourist SIM card

There are three sensible options: buy an eSIM online before your trip, register a local SIM at the airport, or visit an official operator store in the city.

Buy a Vietnam eSIM online before departure

Airalo and Holafly both sell travel eSIM products for Vietnam. You choose Vietnam as your destination, select the package duration and data allowance, and pay through the provider's checkout process. Some products provide installation instructions by email. Others are managed directly through an app.

Before paying, check whether your phone supports eSIM, is network-unlocked, and can connect to the Vietnamese networks supported by the package. It's the most convenient approach if you already have a phone number and don't want an additional +84 number.

Buy a SIM at Noi Bai International Airport, Hanoi

To get a Vietnamese mobile subscription immediately after arrival, look for an official operator counter in the international arrivals area of Terminal 2 at Noi Bai International Airport. Viettel has service counters in the arrivals areas of major international airports, including Noi Bai.

After collecting your luggage and completing arrival procedures, look for a counter with clear operator branding. Not every kiosk selling SIM cards is an official registration point.

Late-night arrivals may find many counters already closed. You can use airport Wi-Fi for your initial transfer and register your mobile subscription the following morning.

Buy a SIM at Tan Son Nhat International Airport, Ho Chi Minh City

The international arrivals area at Tan Son Nhat Airport is another place where travelers can look for tourist SIM services. The same rule applies: choose a clearly identified mobile operator or authorized retailer, ask for the complete price, and confirm proper passport registration.

Travelers staying in central Ho Chi Minh City who don't need a local number right away may find a travel data eSIM bought before departure easier than sorting out paperwork after a long flight.

A longer stay that requires a Vietnamese phone number is better served by completing registration at an official service point.

Buy a SIM in Da Nang or at a city store

At Da Nang International Airport, you can look for mobile services around the international arrivals area.

In the city, official Viettel, VinaPhone, and MobiFone stores are good places to ask about voice and SMS subscriptions, data packages, and account extensions. You can search for current stores near your accommodation using the operator's official website or app. Addresses copied from old travel guides go out of date, because stores relocate and change their opening hours.

Should you buy a SIM at a convenience store?

Only if the retailer can legally complete subscriber registration and your identity is properly verified. Selling a SIM card and registering its subscriber information are different processes.

A number you'll rely on for account verification or important communication isn't worth that uncertainty just to save a few minutes.

How to register a Vietnam SIM card with a passport

Foreign visitors can register Vietnamese mobile subscriptions using valid passports, subject to the country's subscriber registration requirements. Your passport must be valid for the stay allowed by your entry visa, or for the maximum permitted stay if you are visa-exempt. Foreign nationals with an electronic identification account can use that account instead.

Since April 15, 2026, additional rules on mobile subscriber identity verification apply, and operators must follow the applicable verification procedures for foreign nationals registering with passports.

What should you bring?

Bring your original valid passport and the phone in which you'll use the SIM. An eSIM also requires a phone that supports eSIM and isn't locked to another mobile network.

The operator may need to collect and verify identification details and facial information under its applicable registration process. Visiting an official service store in person is often easier for passport holders, especially when remote verification doesn't support their documents or devices.

Step-by-step registration

1. Step 1

   Ask for a local +84 number

   You can say: "I need a prepaid Vietnam SIM with a local phone number, calls, SMS, and mobile data."

   This makes it clear that you want more than internet access.

2. Step 2

   Choose a physical SIM or local eSIM

   To keep your foreign SIM in your phone, ask whether the operator can provide a local eSIM with voice and SMS functionality.

3. Step 3

   Present your passport and verify

   The staff will guide you through the required information, facial verification, and other applicable steps.

4. Step 4

   Confirm the number and total cost

   Before paying, check the activation charge, data package price, included calls, SMS functionality, and subscription validity.

5. Step 5

   Test the connection

   Turn on mobile data, open a webpage, and test calling and SMS if these are services you requested.

   Signal bars on your screen aren't a cue to leave yet. Having a network signal doesn't prove that every service is working.

Can you register using a passport photo?

Vietnamese regulations recognize specified forms of valid identification, including originals and certain legally valid copies or electronic records. An ordinary photo of your passport saved on your phone, though, may not be enough for every subscriber verification step.

For most visitors, bringing the original passport is the simplest approach. The operator can then apply the appropriate procedure for your circumstances.

Do international travel eSIMs require passport registration?

That varies by product. Some international data-only eSIMs, including certain Airalo products, may not require a separate passport-based eKYC process during purchase. This isn't the same as registering a Vietnamese mobile number under your name.

When you register a Vietnamese local phone number through a domestic operator, subscriber verification requirements apply whether the number is stored on an eSIM or a physical SIM.

Viettel, VinaPhone, or MobiFone: which network is best for tourists?

All three major operators can serve foreign visitors, but the right choice depends on your route and the packages available to you.

Viettel: worth checking first for remote travel

Itineraries covering Ha Giang, Cao Bang, Sa Pa, or other mountainous destinations in northern Vietnam should put Viettel first on the list to investigate. It operates an extensive mobile network and offers several tourist data packages.

Still, no network works perfectly on every mountain road, inside every valley, or in every concrete guesthouse.

At a remote property, ask your accommodation provider which operator actually works well there. That local information can be more useful than a nationwide coverage ranking.

VinaPhone: a practical option for cities

VinaPhone is another major Vietnamese mobile operator with retail stores and eSIM support. Some international Vietnam travel eSIMs also use VNPT/VinaPhone infrastructure, meaning you may be connected to the same network through a travel eSIM rather than a local subscription.

On a Hanoi - Ninh Binh - Da Nang - Hoi An itinerary, it's reasonable to compare VinaPhone and Viettel on price, allowance, and convenience. Check whether the particular product provides a mobile number or data only, and whether registration is available for foreign passport holders.

MobiFone: consider it when the package fits

MobiFone offers short-term data packages and regular mobile subscriptions. A trip spent mostly in larger cities is a good reason to compare MobiFone's total cost against Viettel and VinaPhone.

A very low price from a seller needs a follow-up question: does it refer to an add-on data package, a newly registered SIM, or the complete cost of both? Successful identity registration and correct service activation matter more to foreign visitors than a small difference in price.

Check your phone before buying a Vietnam eSIM

eSIM is convenient, but some phones don't support it. Check compatibility before paying so you don't end up with a QR code your phone can't install.

Check eSIM compatibility

On an iPhone, open Settings and select Cellular or Mobile Data. An option to add an eSIM is a good sign, and you can move on to checking compatibility and carrier restrictions. You can also open Settings - General - About to view device information.

On Android, the location of eSIM settings depends on the manufacturer and operating system version. Compatible Samsung Galaxy and Google Pixel devices usually provide SIM management options within their connection settings.

The model name alone isn't enough to go on. The same phone family may have different eSIM capabilities depending on the region where it was sold.

Check whether your phone is carrier-locked

On an iPhone, go to Settings - General - About - Carrier Lock. "No SIM restrictions" means the phone isn't locked to a particular carrier.

If your phone is locked, contact your existing operator about unlocking it. Buying an eSIM won't bypass a carrier lock.

Should you install your Vietnam eSIM before flying?

An Airalo eSIM can be purchased and often installed while you still have a stable internet connection, but read the activation policy for your exact package first.

Many plans begin their validity period when they first connect to a supported network at the destination. Other products may start their validity period when installed. The distinction between installation date and activation date matters.

After landing in Vietnam, enable the travel eSIM, select it for mobile data, and turn on data roaming for that line if the provider's instructions require it. Data roaming on your home SIM can stay off; a separate Vietnam travel eSIM works without it.

Common Vietnam SIM and eSIM problems

The phone shows signal bars but has no internet

First, check which SIM is selected for mobile data. On a dual-SIM phone, it's easy to leave your home SIM selected even after installing a new travel eSIM.

If the correct line is selected, check mobile data settings, APN configuration, and the travel eSIM provider's roaming instructions. Then try briefly enabling and disabling airplane mode.

Mobile data works, but phone calls don't

Start by checking whether you purchased a data-only plan. If you have a local subscription with voice service, check the default calling SIM, activation status, and account balance.

Some problems may also involve device compatibility and support for voice over LTE, commonly called VoLTE. An older phone needs its calling compatibility with the network checked as well, not only the internet connection.

You run out of data halfway through the trip

Check your remaining balance through the provider's app or account page. Topping up your existing package, where it allows that, may be easier than buying a completely new eSIM and installing another profile.

Local subscriptions have their own package expiry dates and renewal rules to check. Some packages renew automatically if enough money remains in the account.

You change phones while in Vietnam

A physical SIM can be moved between devices, but the subscription may still be subject to identity verification requirements when the device changes. Since June 15, 2026, Vietnamese rules require checking and verifying the subscription when a SIM is used in another terminal device.

eSIM transfers follow separate procedures depending on the operator, and an old QR code may not work when scanned again on a new phone. Anyone planning to change devices during the trip should ask the operator about eSIM reissue and verification procedures in advance.

Which Vietnam SIM is best for your type of trip?

First-time visitor spending seven days in Vietnam

You're arriving in Hanoi, visiting Ninh Binh and Ha Long Bay, and returning home after a week. With a phone that supports eSIM and no need for a +84 number, an Airalo 5GB/7-day plan is a straightforward choice at a listed price of US$10. Install it according to the provider's instructions while you have Wi-Fi, keep your home SIM available for existing services, and choose the Vietnam eSIM for mobile data after arrival.

Traveling around Vietnam for 10-15 days and contacting local drivers

Your itinerary takes you from Hanoi to Sa Pa, then perhaps to Ha Giang or Cao Bang, and you need to call homestays, drivers, and bus companies directly. A local mobile subscription with voice service, registered at an official operator store, handles that better than an international travel eSIM chosen for convenience. Viettel is worth checking first for this route: compare the available 15-day packages or bundles with calling minutes, and confirm the complete price and eligibility.

Business traveler needing foreign OTPs and a Vietnamese number

Two mobile lines are usually more practical here than one. Keep your home SIM active for verification messages from your bank and existing services, and add a local Vietnamese SIM or eSIM for a +84 number, domestic calls, and mobile data.

Before departure, check the dual-SIM capabilities of your phone and the roaming charges of your home operator. This setup separates your existing accounts from your temporary local communication needs.

Traveler using a phone without eSIM support

Skip eSIM packages and buy a physical SIM.

Visit an official Viettel, VinaPhone, or MobiFone service point with your passport, complete registration, select an appropriate data plan, and test the connection. A phone with only one physical SIM slot makes it hard to keep your home number active for SMS, so think about that before removing your existing SIM.

Traveler staying in Vietnam for a month

A stay of around 30 days makes a local prepaid subscription worth considering instead of repeatedly purchasing short international eSIM packages. At registration, ask about account validity, identity verification, renewal conditions, and number retention rules, not just the initial data allowance. You may then be able to top up your account, register different data packages, and continue using the same phone number while your subscription remains valid.

Five things to check before paying

A tourist SIM price board at the airport may advertise a huge amount of data at an attractive price. Before paying, check these five details.

First: Does the package include a phone number? Look for the words "Data Only" or ask whether you will receive a Vietnamese +84 number.

Second: Can the subscription send and receive SMS? This matters particularly if you intend to verify accounts using a Vietnamese phone number.

Third: Is the data allowance daily or total? 5GB per day for seven days is very different from 5GB across the entire week.

Fourth: What is the complete price, including activation and SIM charges? The price shown online may cover only a data package and not the cost of opening a new mobile subscription.

Fifth: When does the package start and expire? Check whether validity lasts 7, 15, or 30 days, when the period starts, and whether top-ups or automatic renewals are available.

Test data, calls, and SMS on a local SIM with a phone number before leaving the store. With an international travel eSIM, save your order information and installation instructions in case you need support.

Final recommendation: which Vietnam tourist SIM should you buy?

Travelers who only need internet access for one week can start by comparing Airalo's 5GB/7-day plan with other data-only travel eSIMs. Anyone who needs a Vietnamese +84 number for regular calls and SMS should visit an official Viettel, VinaPhone, or MobiFone service point with a passport and register a subscription that includes the services they need.