A Vietnam SIM card gives travelers affordable mobile data for maps, ride-hailing, translation, messaging and other everyday travel needs. Physical prepaid SIM cards are widely available from Viettel, MobiFone and VinaPhone, Vietnam’s three major mobile networks.
Before buying, check the plan’s validity, data allowance and whether it includes a Vietnamese phone number. You should also confirm that the SIM will be registered correctly and that your phone is unlocked.
Vietnam SIM Card Quick Answer
| Your priority | Recommended option |
|---|---|
| Best overall coverage | Viettel |
| Mountains, countryside and remote routes | Viettel |
| Major cities and popular tourist destinations | Viettel, MobiFone or VinaPhone |
| Data plus a Vietnamese phone number | Selected MobiFone or VinaPhone plans |
| Internet access only | Data-only tourist SIM |
| Buying after arrival | Official network store or authorized airport counter |
| Preparing before departure | Vietnam eSIM for compatible phones |
Practical recommendation: Choose Viettel if your itinerary includes destinations such as Ha Giang, Cao Bang, Sapa or less-developed areas. For a trip focused mainly on cities, compare the actual data allowance, validity and local-number features instead of choosing by network name alone.
Best SIM Card for Vietnam
The best SIM card for Vietnam depends mainly on where you are traveling and whether you need mobile data only or a Vietnamese phone number as well.
Best for nationwide coverage: Viettel
Viettel is generally the strongest choice for travelers visiting several regions or going beyond major cities. Its broader coverage makes it particularly suitable for northern mountain routes, countryside stays, coastal journeys and long-distance travel.
This does not mean Viettel will always have the fastest connection at every hotel, street or attraction. Mobile performance varies according to location, signal conditions, network congestion and the device being used.
Viettel’s main advantage is the likelihood of maintaining coverage across a wider variety of destinations.
Best for trips focused on major cities: MobiFone or VinaPhone
MobiFone and VinaPhone can both work well in cities and established tourist destinations, including:
- Hanoi
- Ho Chi Minh City
- Da Nang and Hoi An
- Nha Trang
- Phu Quoc
- Other major urban and coastal areas
Selected MobiFone and VinaPhone tourist plans include a Vietnamese number. This can be useful when hotels, drivers or local contacts need to call you.
However, a phone number does not automatically mean that all calls and SMS are included. Some plans provide incoming calls or same-network minutes, while outgoing calls to other networks and SMS may require additional prepaid credit.
Viettel vs MobiFone vs VinaPhone
Viettel, MobiFone and VinaPhone all operate nationwide mobile networks. For travelers, the main differences are coverage, plan structure and whether a particular package includes a local number.
| Network | Best suited to | What to check |
|---|---|---|
| Viettel | Multi-province, rural and mountain travel | Whether the plan is data-only |
| MobiFone | Major cities and established tourist destinations | Included calls, SMS and prepaid balance |
| VinaPhone | Major cities and popular travel routes | Daily high-speed data allowance |
Viettel tourist SIM
A Viettel tourist SIM is normally the first option to consider when coverage is more important than having a local phone number.
It is particularly suitable for:
- Ha Giang and Cao Bang
- Sapa and other northern mountain areas
- Rural homestays
- Long-distance bus or motorbike routes
- Multi-province itineraries
- Islands and less-developed coastal areas
Many Viettel travel plans focus mainly on mobile data. Check the exact package if you need a Vietnamese number, regular calls or SMS.
Travelers with a compatible phone can also compare available Viettel eSIM plans.
MobiFone tourist SIM
MobiFone is a practical option for travelers staying in cities and established tourist areas.
Depending on the package, a MobiFone tourist SIM may include:
- A Vietnamese phone number
- A daily data allowance
- Incoming calls
- Same-network calling minutes
- Hotspot support
Some packages include calls only to other MobiFone numbers. Calls to Viettel, VinaPhone or other networks may use the SIM’s prepaid balance.
VinaPhone tourist SIM
VinaPhone is another suitable choice for city-based travel and popular tourism routes.
Selected plans may provide:
- Daily high-speed data
- A Vietnamese phone number
- Incoming calls
- Same-network calling minutes
- Continued access at a reduced speed after the daily allowance
Two SIM cards using the same network can still have different data limits, validity periods and calling benefits. Always compare the actual package rather than relying only on the network logo.
Travelers considering a digital option can also read GoVnSIM’s Viettel, MobiFone and VinaPhone eSIM comparison.
Vietnam Tourist and Prepaid SIM Cards
Most physical SIM cards sold to international visitors are prepaid local SIM cards. You pay in advance for a fixed validity period, data allowance and any included calling benefits.
The terms tourist SIM, prepaid SIM and local SIM are related, but they do not always mean exactly the same thing.
Vietnam tourist SIM card
A Vietnam tourist SIM card is a short-term package designed for international visitors.
Common validity periods include:
- 7 days
- 10 days
- 15 days
- 20 days
- 30 days
Most tourist SIMs include mobile data. Some also provide a Vietnamese number, calls or SMS.
Short-term tourist packages may not be renewable in the same way as regular local subscriptions. Check what happens when the allowance or validity period ends.
Vietnam prepaid SIM card
A prepaid SIM lets you pay for data, calls and SMS before using them. There is no monthly contract.
Some prepaid SIMs can be topped up and renewed. Others are fixed tourist packages that stop working when their validity expires.
Before buying, confirm:
- Whether the SIM can be topped up
- Whether the package can be renewed
- When its validity begins
- What happens when the allowance expires
Vietnam local SIM card
A local SIM connects directly to a Vietnamese network such as Viettel, MobiFone or VinaPhone.
Depending on the plan, it may provide:
- Access to a local mobile network
- Local data packages
- A Vietnamese phone number
- Incoming or outgoing calls
- The ability to add prepaid credit
Not every local SIM is designed for short-term visitors. A ready-made tourist SIM is usually easier to understand and set up than a standard local subscription.
Data-only SIM versus SIM with a number
A data-only SIM provides mobile internet but may not include a usable number for regular calls or SMS.
It is usually enough for:
- Google Maps
- Grab
- Messenger
- Translation apps
- Social media
- Internet-based calls
A plan with a Vietnamese phone number may be more useful when:
- A hotel or driver needs to call you
- You want to make standard local calls
- You need to receive regular SMS
- A local service requests a Vietnamese number
- You are staying for several weeks
A Vietnamese number does not guarantee that every bank, app or platform will accept it for OTP verification. Some services restrict tourist, prepaid or newly issued numbers.
Travelers who prefer to arrange connectivity before departure can compare Vietnam eSIM plans for compatible, unlocked phones.
Vietnam Data SIM and Unlimited Data Plans
A Vietnam internet SIM card usually refers to a prepaid data SIM designed mainly for mobile internet rather than standard calls and SMS.
Vietnam data SIM plans commonly use one of three structures: a daily allowance, one total allowance for the entire trip or unlimited access with a high-speed limit.
Daily-data plans
A daily-data plan provides a new high-speed allowance each day.
This structure works well for travelers who want predictable daily access. However, unused data normally does not carry over to the next day.
Check:
- The amount of high-speed data available each day
- When the daily allowance resets
- What happens after the limit is reached
- Whether hotspot use is allowed
Total-data plans
A total-data plan provides one allowance for the complete validity period.
This can be more flexible if you use little data on some days and more on others. The disadvantage is that heavy use early in the trip can exhaust the entire allowance.
Vietnam unlimited data SIM cards
“Unlimited data” does not always mean unlimited full-speed data.
A plan may provide:
- Unlimited total use with a daily high-speed limit
- Reduced-speed access after the daily allowance
- A daily allowance that stops when fully used
- Unlimited access only to selected applications
Before buying, ask how much high-speed data is included and what happens after the allowance is used.
For most travelers, the high-speed allowance is more important than the word “unlimited” in the product name.
How much data do you need?
| Usage type | Suggested allowance |
|---|---|
| Maps, messaging and light browsing | 1–2GB per day |
| Social media and regular video use | 3–5GB per day |
| Heavy streaming, uploads or hotspot use | 5GB or more per day |
These are practical estimates rather than fixed requirements.
Maps and messaging use relatively little data. Video streaming, cloud backups, automatic photo uploads and laptop tethering can consume data much faster.
Vietnam SIM Card Prices
The total SIM card cost in Vietnam depends on the selected network, data package, validity, registration and place of purchase.
Tourists normally buy a ready-to-use package rather than a blank physical SIM. The final price may therefore include the SIM, mobile data, registration, installation and retailer support.
Typical Vietnam tourist SIM prices
| SIM type | Typical price |
|---|---|
| Basic short-stay tourist SIM | VND 100,000–200,000 |
| 15–30 day tourist SIM | VND 150,000–300,000 |
| High-data, local-number or airport package | VND 200,000–400,000 |
VND 100,000–400,000 is roughly USD 4–16, depending on the exchange rate.
These are reference ranges, not fixed official prices. The final amount may be higher or lower depending on:
- Network
- Plan validity
- Daily or total data allowance
- Phone-number availability
- Included calls or SMS
- Place of purchase
Airport packages are often priced toward the higher end because they include immediate registration, installation and testing.
Before paying, ask the seller to show:
- The network name
- Total price
- Plan validity
- Daily or total data allowance
- Phone-number availability
- Included calls and SMS
- Whether the SIM is registered under your passport
A cheaper SIM is not necessarily better if it has a short validity period, limited high-speed data or unclear registration.
Where to Buy a SIM Card in Vietnam
Travelers planning to buy a SIM card in Vietnam can choose between airport counters, official network stores and reputable phone shops.
Buying a SIM card at the airport
Major international airports normally have mobile service counters in or near the arrivals area.
Buying at the airport is convenient because staff can usually:
- Register the SIM
- Insert it into the phone
- Configure mobile data
- Confirm the phone number
- Test the connection
Airport tourist SIMs may cost more than comparable plans at official stores in the city.
Before leaving the counter:
- Turn off airport Wi-Fi.
- Open a website using mobile data.
- Confirm the network displayed on the phone.
- Check the plan validity.
- Confirm whether a phone number is included.
- Keep the receipt or package information.
Travelers arriving at Noi Bai can read the separate guide to buying a SIM card at Hanoi Airport.
At an official network store
An official Viettel, MobiFone or VinaPhone store is normally the most reliable place to buy and register a physical prepaid SIM.
Advantages include:
- Official subscriber registration
- Clearer package information
- Access to current network plans
- Better support if the SIM stops working
- Lower risk of receiving a SIM registered to another person
The main inconvenience is reaching the store without an active mobile connection. Airport Wi-Fi, hotel Wi-Fi and offline maps can help.
Ask your accommodation to identify a genuine operator branch. A phone shop displaying a network logo is not necessarily an official company-owned store.
At phone shops and convenience stores
Some phone shops sell prepaid SIM cards and can complete registration. Others may sell pre-activated SIMs with unclear ownership.
Convenience stores are often more useful for buying prepaid credit than for registering a new tourist SIM. Not every branch sells SIM cards, and staff may not be able to register one using a foreign passport.
Before buying from an independent retailer, ask:
- Will the SIM be registered under my passport?
- Is the package already active?
- When does its validity begin?
- Can the seller show the package details?
- Is support available if it stops working?
Avoid buying an anonymously registered SIM simply because it is cheaper or does not require identification.
Buying online before arrival
A physical SIM normally needs to be collected or delivered. Travelers who prefer to prepare before flying often choose an eSIM instead.
An eSIM can be ordered online and installed without removing the home SIM. The phone must support eSIM and be unlocked from its original carrier.
GoVnSIM offers Vietnam eSIM options using local networks such as Viettel, MobiFone and VinaPhone, together with setup guidance for data-only and local-number plans.
Do You Need a Passport to Buy a SIM Card in Vietnam?
Foreign visitors buying a properly registered prepaid SIM should expect to present their original passport.
Vietnamese mobile subscriptions must be linked to verified subscriber information. An official operator or authorized seller may need to record your passport details and complete identity verification before activating the SIM.
A passport photo or photocopy may not always be accepted at an official store.
Be cautious if a physical SIM seller says registration is unnecessary. The SIM may already be registered under another person’s identity and could later be suspended.
This is different from ordering some international travel eSIMs. Depending on how the product is supplied and registered, an eSIM provider may not ask the customer to upload a passport directly during checkout.
For a physical local SIM purchased in Vietnam, bring your original passport and use an official or authorized seller.
Vietnam SIM Card vs eSIM
A physical SIM and an eSIM may use the same Vietnamese networks. The main difference is how the service is delivered and installed.
| Feature | Physical SIM | eSIM |
|---|---|---|
| Installation | Insert a plastic SIM | Scan a QR code or install manually |
| When to buy | Usually after arrival | Can be purchased before departure |
| Device requirement | Unlocked phone with a SIM slot | Unlocked, eSIM-compatible phone |
| Keeping your home SIM | You may need to remove it | It usually remains installed |
| Registration | Passport normally required for a new local SIM | Depends on the travel eSIM arrangement |
| Moving to another phone | Usually possible by moving the card | May be limited to one installation |
| Important limitation | The SIM can be lost or damaged | The QR may not be reusable after deletion |
Choose a physical SIM when:
- Your phone does not support eSIM.
- You want in-person registration and installation.
- You may need to move the SIM to another phone.
- You prefer buying directly from an official network.
Choose an eSIM when:
- Your phone supports eSIM.
- You want to prepare before arrival.
- You want to keep your home SIM installed.
- You want to avoid finding a shop after landing.
Both options require an unlocked phone. A phone locked to its original carrier may reject both a Vietnamese physical SIM and a travel eSIM.
Common Mistakes When Buying a Vietnam SIM Card
Buying a SIM registered to someone else
An incorrectly registered SIM may later be suspended. Use your passport and buy from an official or authorized seller.
Assuming data-only means a phone number is included
Many tourist plans provide mobile internet without standard calls, SMS or a usable Vietnamese number.
Misunderstanding unlimited data
An unlimited plan may still limit high-speed data each day. Check what happens after the daily allowance is used.
Using a carrier-locked phone
A phone locked to its original carrier cannot normally use a Vietnamese physical SIM or travel eSIM.
Leaving before testing mobile data
Turn off Wi-Fi and test the connection before leaving the counter. Confirm that the plan matches what you purchased.
Frequently Asked Questions
What is the best SIM card for Vietnam?
Viettel is usually the safest overall choice for travelers visiting rural areas, mountain regions or several provinces. MobiFone and VinaPhone are also suitable for trips focused mainly on major cities. The best option depends on coverage, data allowance, validity and whether you need a local number.
Is Viettel better than MobiFone in Vietnam?
Viettel generally has an advantage in coverage outside major cities. MobiFone can still work well in cities and established tourist areas. Neither network is guaranteed to be the fastest at every location.
Can foreigners buy a SIM card in Vietnam?
Yes. Foreign visitors can buy prepaid SIM cards from official network stores and authorized sellers. Bring your original passport for subscriber registration.
How much does a Vietnam tourist SIM card cost?
A ready-to-use tourist SIM commonly costs approximately VND 100,000–400,000, depending on the network, validity, data allowance and place of purchase. Airport and high-data packages are usually toward the higher end.
Can I buy a Vietnam SIM card at the airport?
Yes. Major international airports normally have mobile service counters. Confirm the network, data allowance, validity and registration, then test the SIM without Wi-Fi before leaving.
Does a Vietnam tourist SIM include a phone number?
Not always. Some tourist SIMs are data-only, while others include a Vietnamese number. Calls, SMS and prepaid credit should be checked separately.
Can I use a Vietnam SIM for Grab and Zalo?
A data-only SIM is normally enough to use an existing Grab or Zalo account over mobile internet. Registering a new account or completing SMS verification may require a working phone number.
Can I use a Vietnam SIM in a locked phone?
No. The phone must be unlocked from its original carrier before it can use a Vietnamese SIM or travel eSIM.
Is a physical SIM or eSIM better for Vietnam?
A physical SIM is useful for phones without eSIM support and travelers who prefer in-store setup. An eSIM is more convenient for compatible phones because it can be arranged before arrival without removing the home SIM.
Final Recommendation
Choose Viettel when your itinerary includes mountain areas, rural destinations or travel across several parts of Vietnam. For trips focused mainly on Hanoi, Da Nang, Ho Chi Minh City and other major destinations, compare the actual Viettel, MobiFone and VinaPhone packages rather than choosing by network name alone.
A data-only SIM is sufficient when you mainly need maps, messaging and mobile internet. Choose a package with a clearly stated Vietnamese number when regular calls or SMS matter.
For a physical SIM, bring your original passport, buy from an official or authorized seller and test the connection before leaving. Travelers with an unlocked, eSIM-compatible phone can instead arrange a Vietnam eSIM before departure.