Country guide · AsiaLocal SIM Cards in Vietnam: Carriers, Plans & Prices (2026)
Tourist SIM cards in Vietnam start at $3 from Viettel. Buy at Tan Son Nhat (Ho Chi Minh City) or Noi Bai (Hanoi) airport arrivals. Passport required for registration. For instant data without a store visit, a HelloRoam eSIM costs from $1.7 and activates in 2 minutes. See the comparison table below.
- Recommended
- HelloRoam eSIMfrom $1.7, instant activation
- Setup time
- Under 2 mininstall before your flight
- Physical SIM from
- $3 USDViettel
- Network
- 4G LTE / 5GViettel
Vietnam has some of Southeast Asia's cheapest mobile data. A full month with 30 GB from Viettel costs about 200,000 VND, which is under $8 USD. Three national carriers compete across the country: Viettel dominates rural coverage, Mobifone is strong in cities, and Vinaphone fills the gaps. All three have counters at Tan Son Nhat Airport in Ho Chi Minh City and Noi Bai Airport in Hanoi, located directly past baggage claim. The process is quick but involves a passport scan and sometimes a fingerprint, depending on the counter. Viettel is the carrier to choose if you plan to travel from Hanoi to the northern highlands around Ha Giang and Sapa, or down the central coast toward Hoi An. Coverage on Ha Long Bay is reliable from all three carriers near the main cruise routes.
Vietnam has three carriers: Viettel (largest, best rural coverage), Mobifone, and Vinaphone. The Noi Bai Airport arrivals hall in Hanoi has three carrier booths open 6 AM to 11 PM. Tan Son Nhat in Ho Chi Minh City has similar coverage. Vietnam is a popular backpacker route from north to south.
eSIM for Vietnam: the fastest option
Travel eSIMs skip the physical SIM process entirely. Buy online, scan a QR code, and your phone connects to a local network. No passport check, no airport queue, no SIM ejector tool. Most travel eSIMs are data-only, so keep your home SIM active for calls and SMS.
Local SIM at the airport is very cheap and includes voice. eSIM is the right call for travelers who want to skip the passport scan process or need a working connection to call their hotel on the ride from the airport.
HelloRoam Vietnam eSIM: our tested pick
HelloRoam scored 8.8/10 in our testing, connects to Viettel in Vietnam, and recorded 31/31 activation success. Instant setup before departure means you are connected the moment you land in Hanoi or Ho Chi Minh City.
Affiliate link. Commissions never affect our rankings or editorial findings.
| Provider | Data | Validity | Price |
|---|---|---|---|
| HelloRoamOur pick | 1 GB | 7 days | $1.7 |
| Airalo | 3 GB | 30 days | $8 |
| Holafly | Unlimited | 7 days | $19 |
eSIM provider comparison
| Provider | Price | Data | Validity | Activation | Score |
|---|---|---|---|---|---|
| HelloRoamTop rated | $1.7 | 1 GB | 7 days | Instant | 8.8/10 |
| Airalo | $8 | 3 GB | 30 days | Instant | 8.8/10 |
| Holafly | $19 | Unlimited | 7 days | Instant | 8.6/10 |
Scores based on activation speed, network coverage, support response time, and pricing across 14 countries. HelloRoam (8.8/10, 31/31 activations) is the top-rated provider. All provider links marked as affiliate.
See full eSIM guide for Vietnam →
eSIM vs physical SIM card in Vietnam
Here is how a HelloRoam eSIM compares to buying a local SIM card in Vietnam across the factors that matter most to travelers.
| Feature | HelloRoam eSIM | Local SIM Card |
|---|---|---|
| Setup time | Under 2 minutes | 15-60 minutes |
| Available before travel | Yes, install up to 30 days early | No, buy on arrival |
| ID required | No | Yes, passport |
| Price from | $1.7 USD | $3 USD |
| Data included | 1 GB to unlimited | Varies by plan |
| Hotspot | Included | Included on most plans |
| Support | 24/7 English | Local language, business hours |
| Local phone number | No, data only | Yes, included |
| Voice calls | Data only, use WhatsApp/FaceTime | Included |
Best SIM cards for tourists in Vietnam
Vietnam has 3 providers offering tourist-friendly prepaid SIM cards. The table below ranks them by overall value for travelers, combining coverage, speed, price, and how easy they are to buy.
| Provider | Type | Network | Cheapest plan | Plans | Where to buy |
|---|---|---|---|---|---|
| ViettelTop pick | major | 4G LTE / 5G | 100,000 VND / $4 | 2 | Airport, Carrier Store |
| Mobifone | major | 4G LTE / 5G | 90,000 VND / $4 | 2 | Airport, Carrier Store |
| Vinaphone | major | 4G LTE / 5G | 80,000 VND / $3 | 2 | Airport, Carrier Store |
SIM card plans compared
Below are every available tourist plan across all providers in Vietnam, sorted by price. Prices are quoted in local currency where available, with USD equivalents.
Viettel
| Plan | Data | Price | Validity | Calls | SMS |
|---|---|---|---|---|---|
| Tourist 10GBBest value | 10 GB | 100,000 VND | 7 days | 20 min local | 20 SMS |
| Tourist 30GB | 30 GB | 200,000 VND | 30 days | 50 min local | 50 SMS |
Mobifone
| Plan | Data | Price | Validity | Calls | SMS |
|---|---|---|---|---|---|
| Tourist 10GBBest value | 10 GB | 90,000 VND | 7 days | 10 min local | 10 SMS |
| Tourist 20GB | 20 GB | 150,000 VND | 15 days | 30 min local | 30 SMS |
Vinaphone
| Plan | Data | Price | Validity | Calls | SMS |
|---|---|---|---|---|---|
| Tourist 5GBBest value | 5 GB | 80,000 VND | 7 days | 10 min local | 10 SMS |
| Tourist 15GB | 15 GB | 150,000 VND | 30 days | 30 min local | 30 SMS |
Where to buy a SIM card in Vietnam
The best place to buy is Tan Son Nhat (Ho Chi Minh City) or Noi Bai (Hanoi) airport arrivals. Here is what each channel offers and what to expect.
Airport
Airport counters are the most convenient option on arrival day. Staff speak enough English to handle registration, and you leave the terminal already connected. Expect a small premium (5–15%) over city prices and possible queues after large arrivals.
Carrier Store
Official carrier stores carry every plan, can troubleshoot activation on the spot, and have English-speaking staff in tourist-heavy areas. Prices match the carrier website.
Convenience Store
Convenience stores stock prepaid SIM cards near the checkout. Stock rotates, so selection is narrower than carrier stores, but hours are long and locations are everywhere. Bring your passport.
Online
Ordering online before you fly means you land already connected. eSIMs are instant; physical SIMs can be delivered to your hotel or held for airport pickup. Best prices overall.
Buying experience
At Tan Son Nhat Airport arrivals, the carrier kiosks are lined up just after you clear the customs doors. Each one has staff ready to help and a simple price board in English showing data amounts and costs. You hand over your passport, they scan it, select your plan, insert the SIM, and show you the data is active. The whole transaction takes under 10 minutes. You pay in Vietnamese dong. A small number of vendors will quote USD and try to charge a premium. Stick to the official kiosks. Outside the airport, any phone repair shop or Circle K convenience store sells top-up cards if you need to add credit to an existing SIM.
Coverage & network in Vietnam
Vietnam operates on 4G LTE / 5G networks. Coverage quality varies by provider and region.
Coverage Map for Vietnam
Visit each carrier's website for their interactive coverage map
Viettel
major carrier
Urban
Strong
Rural
Strong
Mobifone
major carrier
Urban
Strong
Rural
Moderate
Vinaphone
major carrier
Urban
Strong
Rural
Moderate
Viettel leads on overall coverage with a rating of 5/5 for reach and 4/5 for speed. In cities, all providers perform similarly. Differences become clear in rural areas, along coastal routes, and on islands where network investment varies.
Real-world connectivity
Ho Chi Minh City and Hanoi have fast, reliable 4G from all three carriers with average speeds of 20-40 Mbps in central districts. The Reunification Express train route from Hanoi to Saigon has coverage in most towns along the coast, with gaps in remote mountain sections. Ha Long Bay has good signal near tourist boats and on the main bay. Sapa town has Viettel 4G, but the rice terrace trekking routes weaken to 3G or drop entirely. Ha Giang Loop: Viettel covers most of the route but signal disappears on the extreme switchbacks near the Meo Vac gorge.
Our verdict on SIM cards in Vietnam
Best for: Budget travelers and backpackers staying more than a week, Short-stay tourists in Hanoi or Ho Chi Minh City, Motorbikers doing the Ha Giang Loop.
Local SIMs cost under $5 for 10 GB with voice. eSIM starts at a similar price but saves you the 15-minute queue at the airport. For stays under 5 days, eSIM is faster. For longer trips, the local SIM gives more data per dollar and includes local calling.
Activation & registration
Check your phone is unlocked
Your device must be carrier-unlocked to accept a Vietnam SIM. Check Settings or contact your home carrier before you leave.
Choose a plan before you buy
Decide on data volume and validity period. A 7-day plan suits short trips; 30-day plans are better value for longer stays.
Bring your passport
Registration is mandatory. The vendor scans your passport ID page and enters details into a government portal. Keep your passport accessible.
Insert and configure
Insert the nano-SIM using the ejector tool. Go to Settings > Mobile Data and confirm data roaming is on for the travel line. Run a speed test to confirm you are connected.
Tips for travelers in Vietnam
Vietnam has some of the cheapest SIM card plans in the world. A 30-day plan with 30 GB costs under $10 USD.
Viettel has the best rural coverage if you plan to travel to Sapa, Ha Giang, or the Central Highlands.
Airport SIM counters set up the SIM for you. The process takes about 10 minutes including registration.
You can top up at any convenience store, phone shop, or via the carrier app.
Vietnam requires biometric registration (fingerprint) for SIM cards at official stores. Airport counters may skip this for tourist SIMs.
Common mistakes to avoid
Buying from street vendors who may sell unregistered SIMs that get deactivated within days.
Not registering your SIM card properly. Unregistered SIMs are being phased out and may stop working.
Expecting widespread 5G. Vietnam is rolling out 5G in major cities, but 4G LTE is the primary network for tourists.
Frequently asked questions
How cheap are SIM cards in Vietnam?
Vietnam is one of the most affordable countries for mobile data. A tourist SIM with 10 GB and 7 days validity costs around 90,000-100,000 VND ($4 USD). Monthly plans with 30 GB are available for under $10.
Which carrier is best in Vietnam?
Viettel is the largest carrier with the best nationwide coverage, especially in rural and mountainous areas. Mobifone and Vinaphone are competitive in cities but have weaker signals in remote regions.
Do I need biometric registration for a SIM card in Vietnam?
Yes, Vietnam has implemented biometric SIM registration requiring fingerprint scanning. At airport counters, passport-only registration is sometimes accepted for short-term tourist SIMs.
Can I use mobile data on Ha Long Bay?
Yes, all three major carriers have coverage in Ha Long Bay. Signal strength is generally good on the water near the main tourist routes, though it may weaken on remote islands.
How do I top up my SIM card in Vietnam?
You can top up at any convenience store, phone accessory shop, or via the carrier's mobile app. Scratch cards are available at most small shops for 10,000-500,000 VND denominations.
Which eSIM provider is best for Vietnam?
HelloRoam is our top-rated eSIM for Vietnam (8.8/10). It connects to Viettel and activates in under 2 minutes with no passport required. Airalo and Holafly also offer Vietnam coverage.
Does Viettel have 5G coverage in Vietnam?
Yes. Viettel launched commercial 5G in Hanoi and Ho Chi Minh City in 2024, with expansion to Da Nang and other major cities ongoing. Most tourist SIM cards connect via 4G LTE, which delivers reliable 20-40 Mbps speeds in urban areas. 5G coverage is concentrated in central business districts.
Is Viettel or Mobifone better for the Ha Giang Loop?
Viettel is the only carrier worth using for the Ha Giang Loop. It covers most of the route including Dong Van, Meo Vac, and the Yen Minh pass, though signal drops on the steepest switchback sections near the Ma Pi Leng gorge. Mobifone and Vinaphone have minimal coverage north of Ha Giang city.
Which eSIM is best for Vietnam?
HelloRoam connects to Vietnam's 4G LTE / 5G network and plans start at $1.7 for 1 GB over 7 days. It works well for travelers who want data active before landing. Airalo offers a wider range of plan sizes at competitive prices. Holafly is worth considering if you want unlimited data and do not mind a higher daily cost.
Should I buy a SIM card or eSIM for Vietnam?
Local SIM at the airport is very cheap and includes voice. eSIM is the right call for travelers who want to skip the passport scan process or need a working connection to call their hotel on the ride from the airport. A local SIM from Viettel starts at $3 and requires passport registration. Choose eSIM if your phone supports it and you value convenience. Choose a local SIM if you need a local phone number or plan to stay longer than two weeks.
Helpful guides
- eSIM vs Local SIM: Which to Choose
- eSIM Setup Guide (iPhone and Android)
- SIM Registration Requirements
- eSIM Guide for Asia
SIM card guides for nearby countries
Traveling beyond Vietnam? These guides cover nearby destinations.
