eSIM Vietnam
Best eSIM for Vietnam: Top eSIM Providers Ranked
Nov
Written by Peter Moore, eSIM Content Writer
Finding Your Perfect eSIM for Vietnam
Vietnam is buzzing in 2025 with vibrant cities like Hanoi, Ho Chi Minh City, and Da Nang drawing travelers from all over. To navigate this dynamic country, whether you are hailing a ride, translating menus, or sharing moments on social media, a reliable internet connection is non-negotiable.
Gone are the days of hunting for physical SIM cards at the airport. ESIM technology has streamlined travel connectivity, allowing you to get online the moment you land. Our team has analyzed the leading providers on the market to determine which offers the best coverage, ease of use, and value for your money.
Our Recommendation: eSIM4
For Vietnam travel, we recommend eSIM4. This service delivers reliable connectivity on major networks like Viettel, transparent pricing, and features designed for international travelers.
Why eSIM4 Leads for Vietnam
- Strong Network Partnership: eSIM4 connects through Viettel and VNPT, giving you robust coverage in both urban centers and rural areas.
- Instant Setup: Get your eSIM QR code by email right after purchase. Install the esim at home before your flight.
- Clear Pricing: No surprise charges or hidden fees. Plans start from just $2.98.
- Proven Track Record: Trusted by over 100,000 global travelers and backed by 24/7 support.
- Data Sharing Allowed: All data plans include hotspot support, so you can share data with other devices.
- Multiple Plan Options: Choose from 11 different data packages, including unlimited options, to match your trip length.
Quick Comparison: Best eSIM Providers for Vietnam
Compare the top eSIMs for Vietnam at a glance. All eSIMs in Vietnam listed here include verified pricing and network details.
| Rank | Provider | Rating | Network Partner |
Plans | Starting Price |
Best For |
|---|---|---|---|---|---|---|
| 1 | ⭐ eSIM4.com | 4.9/5 | Viettel 4G/5G | 11 options | $2.98 | Best overall value |
| 2 | Saily | 4.7/5 | Vinaphone 4G | 5 options | $3.99 | Security features |
| 3 | Airalo | 4.6/5 | Viettel / Vinaphone 4G | 6 options | $4.00 | Regional travel |
| 4 | Nomad | 4.5/5 | MobiFone 4G | 5 options | $4.00 | Large data bundles |
| 5 | Jetpac | 4.4/5 | Viettel / Vinaphone 4G | 5 options | $6.00 | Budget entry |
| 6 | aloSIM | 4.4/5 | MobiFone 4G | 6 options | $4.50 | Phone numbers |
| 7 | Roamless | 4.3/5 | Vinaphone 4G | Pay-as-you-go | $3.84 | Flexible usage |
| 8 | GigSky | 4.3/5 | Vinaphone 4G | 5 options | $2.99 | Free trial |
Choosing the Right eSIM for Your Trip
eSIM4 is our top pick for a travel eSIM for Vietnam, but every traveller has different needs. If you are new to eSIMs, this section explains how to find the best deal when choosing a Vietnam eSIM plan.
| Factor | Considerations | Impact |
|---|---|---|
| Network Coverage | Does the provider partner with major local networks like Viettel or Vinaphone? | Crucial for signal in both urban centers and rural areas. |
| Data Requirements | Are you a light user who only needs maps, or do you require heavy data for streaming? | Estimate your needs to avoid overspending or running out. |
| Validity Options | Does the plan duration match your itinerary? | Ensure your plan covers your entire trip length. |
| Added Features | Do you need a phone number, or is a data-only plan sufficient? | Consider if you need to make traditional voice calls. |
| Cost Efficiency | Don’t just look at the total price. | Check cost-per-GB to ensure you aren’t overpaying. |
Top eSIM Providers
Detailed reviews of the best eSIMs for Vietnam, with verified pricing and carrier-specific notes.
eSIM4.com
Best eSIM for Vietnam. Viettel 4G/5G, Instant Activation
eSIM4 runs on Viettel, Vietnam’s largest carrier by network share, covering every major city and the popular coastal corridors from Da Nang to Nha Trang. Plans start at $2.98 for 1 GB and go all the way to unlimited 30-day data, with savings of up to 59% versus standard roaming rates.
It takes under three minutes to activate your eSIM. Scan the QR code on home Wi-Fi, the profile sits dormant until you land.
Coverage
The Viettel 4G LTE network in Vietnam reaches over 95% of the population and delivers 40-80 Mbps in Hanoi and Ho Chi Minh City. 5G is live in central Ho Chi Minh City and Hanoi as of 2026. Both urban and rural areas of Vietnam get usable coverage, though areas like Ha Giang and Sapa in the northern highlands see 10-30 Mbps 4G. Reliable enough for maps and messaging.
Activation Process
Buy the plan, scan the QR code in Settings > Cellular > Add eSIM on iPhone (or Settings > Network & Internet > SIMs on Android) while on home Wi-Fi. Label the new profile ‘Vietnam’ so switching is easy. The plan activates the moment you toggle it on after landing. No airport queue, no SIM card to lose.
Price
Buy your eSIM online and the 5 GB / 30-day plan at $9.98 is the sweet spot for a typical two-week trip. Unlimited 7-day at $25.98 suits city-hopping travellers who stream heavily. Every plan shows the original price crossed out so savings are visible at a glance.
Data Plans
| Data | Duration | Price | Savings |
|---|---|---|---|
| 1GB | 7 Days | $7.20 $2.98 | Save $4.22 |
| 2GB | 15 Days | $11.70 $4.98 | Save $6.72 |
| 3GB | 30 Days | $14.40 $6.98 | Save $7.42 |
| 5GB | 30 Days | $19.80 $9.98 | Save $9.82 |
| 10GB | 30 Days | $32.40 $16.98 | Save $15.42 |
| 20GB | 30 Days | $52.20 $27.98 | Save $24.22 |
| Unlimited | 3 Days | $20.70 $11.98 | Save $8.72 |
| Unlimited | 5 Days | $33.30 $16.98 | Save $16.32 |
| Unlimited | 7 Days | $48.60 $25.98 | Save $22.62 |
| Unlimited | 10 Days | $62.10 $32.98 | Save $29.12 |
| Unlimited | 15 Days | $86.40 $51.98 | Save $34.42 |
| Unlimited | 30 Days | $124.20 $73.98 | Save $50.22 |
Pros
- Viettel network gives the widest rural and coastal coverage in Vietnam
- Plans from $2.98. The cheapest entry point among all listed providers
- Optional Yabb app adds a real phone number for calls and SMS
- Unlimited plans available from 3 days, ideal for short trips
- Instant QR activation. No airport SIM kiosk needed
Cons
- To get calls and SMS you need to install the separate Yabb app, which has its own subscription cost
Saily
NordVPN-backed eSIM with 3% cashback on every purchase
Saily is NordVPN’s travel eSIM product, offering clean multi-country bundles backed by a company with a strong privacy reputation. For Vietnam, Saily connects via Vinaphone (VNPT Group), the government-backed carrier with good urban coverage and a solid 4G footprint across the Mekong Delta. Every plan earns 3% back in Saily credits.
Coverage
Vinaphone’s 4G network covers all provincial capitals and major tourist corridors including Ha Long Bay, Hoi An, and the Mekong Delta. Speed tests in Ho Chi Minh City show 25-60 Mbps. Coverage thins in remote highland areas near Sapa and the Vietnamese-Chinese border.
Activation Process
Download the Saily app, buy the Vietnam plan, and install via the in-app QR scanner or manual entry. The app handles all the heavy lifting, including prompts for enabling data roaming.
Installation takes about two minutes. Saily supports both iOS and Android with clear guided steps.
Price
If you need around 10 GB of data for a typical Vietnam trip, the 10 GB / 30-day plan at $17.99 is the best-value option. The unlimited 15-day plan at $48.99 is available if you need to stream constantly. The 3% cashback applies to all plans, so repeat travellers see compounding savings.
Data Plans
| Data | Duration | Price |
|---|---|---|
| 1GB | 7 Days | $3.99 |
| 3GB | 30 Days | $7.99 |
| 5GB | 30 Days | $10.99 |
| 10GB | 30 Days | $17.99 |
| 20GB | 30 Days | $28.99 |
| Unlimited | 15 Days | $48.99 |
Pros
- NordVPN pedigree means the app is polished and trustworthy
- 3% credits back on every purchase. Useful for frequent travellers
- Multi-country bundles available for wider Southeast Asia trips
Cons
- No unlimited 30-day plan for long-stay visitors
- Slightly higher entry price than budget alternatives
Nomad
Straightforward Vietnam data. Regional SEA bundles available
Nomad eSIM is a Canadian provider with a clean, no-fuss interface and competitive pricing for Southeast Asia. In Vietnam, Nomad routes through MobiFone, the country’s third-largest carrier with urban coverage that holds up well in the major tourist hubs. Regional Southeast Asia bundles let you cover multiple countries under one plan if Vietnam is part of a wider trip.
Coverage
MobiFone’s 4G network performs reliably in Ho Chi Minh City, Hanoi, Da Nang, and the major coastal resorts. Speed tests average 20-45 Mbps in urban areas. Coverage on rural roads between provinces can drop to 3G or edge, so MobiFone ranks third behind Viettel and Vinaphone for rural reach.
Activation Process
Buy on the Nomad website or app, and install via QR code in your phone’s eSIM settings. No app download required for activation.
Works on all major unlocked eSIM-compatible devices. Regional bundles use the same install process but will connect to the best available carrier in each country.
Price
The 10 GB / 30-day plan at $17 is solid value. The 50 GB plan at $39 is the best price-per-GB option for heavy users.
Nomad’s flat pricing is easy to compare. No hidden auto-renewal fees.
Data Plans
| Data | Duration | Price |
|---|---|---|
| 1GB | 7 Days | $4.00 |
| 3GB | 30 Days | $8.00 |
| 5GB | 30 Days | $10.00 |
| 10GB | 30 Days | $17.00 |
| 20GB | 30 Days | $25.00 |
| 50GB | 30 Days | $39.00 |
| Unlimited | 5 Days | $18.00 |
| Unlimited | 10 Days | $33.00 |
Pros
- Southeast Asia bundles available for multi-country itineraries
- 50 GB plan offers excellent price-per-gigabyte for heavy data users
- No app required for activation
Cons
- MobiFone has weaker rural coverage than Viettel
- No unlimited daily plans available for Vietnam
Jetpac
Unlimited plans and large data packs for Vietnam travellers
The Jetpac eSIM offers short-term unlimited plans and volume data packages that suit both weekend visitors and month-long backpackers. Jetpac’s app includes real-time usage tracking so you always know how much data remains.
Coverage
Jetpac Vietnam plans connect via Viettel or Vinaphone depending on signal strength, with the network selected automatically on device. Urban performance matches the carrier’s own benchmarks: 40-70 Mbps in Ho Chi Minh City and Hanoi. Unlimited plans may be throttled after a high-use threshold, so check the plan terms before buying.
Activation Process
Download the Jetpac app, complete the in-app purchase, and install the eSIM profile directly through the app.
Price
The 15 GB / 30-day plan costs $33.00. The 30 GB plan at $48.00 works out cheaper per GB for heavier users. Unlimited 10-day at $50.00 suits anyone who needs uncapped data for a short Vietnam stay.
Data Plans
| Data | Duration | Price |
|---|---|---|
| 1GB | 4 Days | $7.00 |
| 3GB | 7 Days | $8.00 |
| 5GB | 30 Days | $11.00 |
| 10GB | 30 Days | $25.00 |
| 15GB | 30 Days | $33.00 |
| 30GB | 30 Days | $48.00 |
| 40GB | 30 Days | $64.00 |
| Unlimited | 10 Days | $50.00 |
Pros
- Large data packs up to 40 GB for 30 days
- In-app real-time data usage tracking
Cons
- Unlimited plans may be throttled after heavy use threshold
- App required for activation and plan management
GigSky
Reliable Vietnam data with automatic 15% discount on most plans
GigSky is a US-based provider offering a reliable eSIM with reliable data for travellers who prioritise stability. The Vietnam plans connect via Vinaphone and come with an automatic 15% discount on most packages. GigSky’s app manages everything from plan selection to installation in one place.
Coverage
Vinaphone delivers consistent 4G across Vietnam’s major tourist destinations: Ho Chi Minh City, Hanoi, Da Nang, Hue, and Hoi An. Speeds run 20-55 Mbps in urban areas. Ha Long Bay and the northern mountain routes near Sa Pa see variable 4G and 3G.
Activation Process
Install GigSky from the App Store or Google Play, select your Vietnam plan, and install the eSIM profile through the guided in-app flow. The GigSky app integrates with Apple Wallet on iOS for easy plan management.
Price
The 5 GB / 30-day plan at $10.29 is the most practical option for a standard trip. The 10 GB plan at $16.79 covers a month of moderate-to-heavy use.
GigSky’s 15% discount is automatic. No coupon code needed.
Data Plans
| Data | Duration | Price |
|---|---|---|
| 1GB | 7 Days | $2.99 |
| 3GB | 15 Days | $7.49 |
| 5GB | 30 Days | $10.29 |
| 10GB | 30 Days | $16.79 |
Pros
- Automatic 15% discount applied at checkout. No code needed
- Enterprise-grade reliability backed by years of business travel focus
- Clean app with Apple Wallet integration
Cons
- Variable 4G and 3G on northern mountain routes near Sa Pa
- Plan range is limited. No unlimited option for Vietnam
aloSIM
Canada-based eSIM running on MobiFone. Solid urban coverage
aloSIM is a Canadian provider that explicitly lists MobiFone as its Vietnam carrier. Useful information for travellers wanting to know exactly which network they’re buying. Plans are straightforwardly priced from $4.50 for 1 GB to $29 for 20 GB, with no app required for activation.
Coverage
MobiFone’s 4G network covers all urban centres and major tourist corridors well, with speeds of 20-50 Mbps in Ho Chi Minh City and Hanoi. The network has less rural reach than Viettel, but MobiFone consistently delivers for travellers sticking to the popular beach and city routes along Vietnam’s coast.
Activation Process
No app required. After purchase, install via QR code scan in your device’s built-in eSIM settings. Settings > Cellular > Add eSIM on iPhone. AloSIM provides installation guides for iOS, Android, and select Windows laptops. Activation is typically instant once the profile is installed.
Price
The 3 GB / 30-day plan at $8.00 is the popular choice and covers most two-week itineraries comfortably. The 20 GB plan at $29 is the largest option. Pricing is transparent with no top-up requirements.
Data Plans
| Data | Duration | Price |
|---|---|---|
| 1GB | 7 Days | $4.50 |
| 2GB | 15 Days | $7.00 |
| 3GB | 30 Days | $8.00 |
| 5GB | 30 Days | $11.00 |
| 10GB | 30 Days | $20.00 |
| 20GB | 30 Days | $29.00 |
Pros
- Explicitly lists MobiFone as the Vietnam carrier. No guesswork
- No app required. Installs directly from device eSIM settings
- Simple pricing with no confusing bundle structures
Cons
- MobiFone has weaker coverage in Vietnam’s northern highlands and rural areas
- No unlimited plan option for high-data users
Airalo
World’s largest eSIM marketplace with strong Vietnam coverage
Airalo is the most-recognised name in travel eSIMs, operating a marketplace of local provider profiles across 200+ countries. The Vietnam plan typically connects through Viettel or Vinaphone and benefits from Airalo’s polished app and broad device compatibility. Airmoney credits accumulate with each purchase for returning users.
Coverage
Airalo’s Vietnam plan routes through top-tier local carriers, with urban speeds matching Viettel and Vinaphone benchmarks: 30-70 Mbps in Hanoi and Ho Chi Minh City. Coverage extends well across the coastal tourist route (Da Nang, Hue, Hoi An, Nha Trang) and into the Mekong Delta.
Activation Process
Install the Airalo app, purchase the Vietnam plan, and install via the in-app guided flow or QR code. The app manages multiple country eSIMs in one place, making it convenient for multi-destination trips. IOS and Android both supported with clear setup instructions.
Price
The 10 GB / 30-day plan at $18 is Airalo’s best value for a full Vietnam stay. The 5 GB / 15-day plan at $10.50 is a cost-effective short-stay option. Airalo’s 50 GB plan at $49 is available for content creators or heavy streamers.
Data Plans
| Data | Duration | Price |
|---|---|---|
| 1GB | 3 Days | $4.00 |
| 3GB | 7 Days | $8.00 |
| 5GB | 7 Days | $10.00 |
| 5GB | 15 Days | $10.50 |
| 10GB | 15 Days | $17.50 |
| 10GB | 30 Days | $18.00 |
| 20GB | 15 Days | $28.00 |
| 20GB | 30 Days | $29.00 |
| 50GB | 30 Days | $49.00 |
Pros
- Largest eSIM marketplace. Easy to manage alongside other country plans
- Airmoney cashback programme rewards repeat purchases
- Widest device compatibility and thorough setup guides
Cons
- Plans slightly pricier than direct-from-provider alternatives at the same data tier
- App required. No direct web install option
Roamless
Pay-as-you-go or flat monthly plans. Flexible for Vietnam trips
Roamless takes a slightly different approach. It supports both pay-as-you-go pricing and flat-rate monthly bundles, making it flexible for travellers uncertain about data needs before their trip. The Vietnam plans use Vinaphone and start from $3.95 for 1 GB.
Coverage
Vinaphone’s 4G coverage covers Vietnam’s main tourist destinations well: Ho Chi Minh City, Hanoi, Ha Long Bay, Da Nang, and the coast. Speeds average 20-50 Mbps in cities. As with other Vinaphone plans, coverage in the remote northern highlands and the furthest rural areas is more variable.
Activation Process
Install via QR code in your device’s eSIM settings. No separate app required for standard installation.
Roamless offers both manual ICCID entry and QR-code install options. The plan activates on first data use in Vietnam.
Price
The 1 GB plan costs $3.95. The 5 GB / 30-day plan at $10.95 is the price-competitive middle option. Pay-as-you-go pricing suits travellers who only need occasional data for maps and messaging.
Data Plans
| Data | Duration | Price |
|---|---|---|
| 1GB | 30 Days | $3.95 |
| 3GB | 30 Days | $7.95 |
| 5GB | 30 Days | $10.95 |
| 10GB | 30 Days | $17.95 |
| 20GB | 30 Days | $28.95 |
Pros
- Low entry price at $3.95 for 1 GB. Good for light users
- Flexible pay-as-you-go option for data-light trips
- No app required for installation
Cons
- No unlimited plan option for Vietnam
- Pay-as-you-go rate can become expensive for heavy data users
Apps to Install Before You Leave
| App | Why | Cost | Platform |
|---|---|---|---|
| Grab | The dominant ride-hailing app across all of Vietnam. Safer and price-locked vs street taxis, accepts international cards, covers 46 provinces. Also does food delivery and parcel sending. | Free (pay per ride/order) | iOS / Android |
| Be | Vietnam’s homegrown Grab alternative, available in 28 cities including Hanoi and HCMC. Often cheaper than Grab for short city rides. Worth checking both apps before booking. | Free (pay per ride) | iOS / Android |
| Xanh SM | Vietnam’s first all-electric taxi service (VinFast cars), highly rated for driver professionalism and clean vehicles. No international card support yet. Pay cash or fund via app top-up. | Free (pay per ride) | iOS / Android |
| Google Maps (with Vietnam offline pack) | Download the offline Vietnam map pack before you leave home. Covers navigation even without data. Essential for Ha Long Bay cruises, Sapa treks, and rural areas where your eSIM signal drops. | Free | iOS / Android |
| Google Translate (Vietnamese offline pack) | Download the Vietnamese language pack for offline use. The camera translate feature reads menus and street signs instantly. Critical in rural areas with no English signage. | Free | iOS / Android |
| VNPAY | The most foreigner-friendly Vietnamese payment app. Register with an international phone number and link your Visa/Mastercard/JCB to pay VietQR codes at cafes, restaurants, and shops without needing a local bank account. | Free | iOS / Android |
| 12Go Asia | Book Vietnam’s buses, trains, ferries, and domestic flights in one place. Particularly useful for advance booking of the Hanoi-HCMC Reunification Express sleeper train and Ha Long Bay transfer buses. | Free (pay per booking) | iOS / Android |
| Traveloka | Popular regional travel booking app for domestic flights, hotels, and buses. Good for comparing Vietjet, Bamboo Airways, and Vietnam Airlines prices on the Hanoi, HCMC, Da Nang routes. | Free (pay per booking) | iOS / Android |
| Works normally in Vietnam. Use it as your primary messaging app since Telegram was blocked in June 2025. Most guesthouses, tour operators, and Airbnb hosts communicate via WhatsApp. | Free | iOS / Android | |
| Zalo | Vietnam’s most widely used chat and social app locally. Useful for communicating with Vietnamese guesthouse owners, local guides, and restaurants that don’t use WhatsApp. Also functions as a local news and payments hub. | Free | iOS / Android |
| VNTrip | Vietnam-specific travel booking platform for domestic hotels, tours, and transport. Often lists smaller local guesthouses that don’t appear on Booking.com or Agoda. | Free (pay per booking) | iOS / Android |
How Much Data You Actually Need in Vietnam
The biggest mistake travellers make is buying a small plan when larger data packs deliver far better value. Many underestimate the amount of data they need, then burning through a 1GB plan before lunch on day one. Here is what real activities consume per hour:
Data per hour by activity (lower is better)
| Profile | Activities | Per Day | Week Total | Suggested Plan |
|---|---|---|---|---|
| Light traveller | Maps, WhatsApp text, occasional web | 100-200 MB | 1-2 GB | eSIM4 1 GB / 7 days ($2.98) |
| Standard traveller | Maps, Grab, social browsing, some streaming | 300-500 MB | 3-5 GB | eSIM4 5 GB / 30 days ($9.98) |
| Heavy user | YouTube, video calls, hotspot for laptop | 700 MB – 1.5 GB | 5-12 GB | eSIM4 10 GB / 30 days ($16.98) |
| Digital nomad | Full work setup: video calls, cloud storage, streaming | 1.5-3 GB | 10-20 GB | eSIM4 Unlimited 30-day ($73.98) |
| Short stay (3-5 days) | Navigation, Grab rides, WhatsApp | 200-400 MB | 1-3 GB | eSIM4 2 GB / 15 days ($4.98) |
Activating Your eSIM on Arrival
⚠ Heads up: Most eSIM plans start counting from first data use, not from purchase. Activate a 3-day unlimited plan at Tan Son Nhat and a third of it is already gone by the time you reach your hotel.
Install the profile at home on Wi-Fi and the plan stays dormant until you switch to it after you arrive in Vietnam. You control the clock.
Install Before You Fly: 3 Simple Steps
Save it to email, camera roll, and a screenshot folder while you are on home Wi-Fi. Noi Bai’s Wi-Fi is patchy right after immigration. You want the QR accessible offline.
iPhone: Settings > Cellular > Add eSIM > Use QR Code (scan a QR code with the camera). Android: Settings > Network & Internet > SIMs > Add eSIM. Label the new profile “Vietnam” so switching back to your home plan is easy.
Toggle mobile data to your Vietnam profile in Settings. The plan activates on first use. Enable data roaming if prompted.
If You Haven’t Set It Up Yet: Airport Guide
Tan Son Nhat (SGN). Ho Chi Minh City
Free Wi-Fi is available throughout arrival halls and is described as reliable for basic use. Connect on landing to scan your QR code if you didn’t install at home.
You can buy a SIM at the airport from Viettel, MobiFone, and Vinaphone counters at arrivals Exit B and C (Terminal 2). A tourist SIM costs around $7–11 USD for a week; staff register the SIM on the spot using your passport.
Grab tip: Use the Grab app to book from Exit D2 (Domestic Terminal). Avoid unmarked taxis at the kerb. Metered or not, many run inflated fares from the airport.
Noi Bai (HAN). Hanoi
Free Wi-Fi is available but the signal fluctuates between immigration and the arrivals exit. Do not rely on airport Wi-Fi to scan your QR code. Save it offline before your flight.
Physical SIM counters are in the arrivals hall at both Terminal 1 and Terminal 2. Viettel and MobiFone both have staffed counters. A week of data costs $7–11 USD.
Grab tip: Grab pickup zones are outside T1 and T2 arrivals. Pre-book in the app before you exit customs.
Where You Will Actually Use Your eSIM
Whether you spend your time in Vietnam in HCMC’s cafe culture or travels through Vietnam’s north to Ha Giang, coverage holds up across the main routes.
- Ho Chi Minh City (Saigon)Strong 4G and growing 5G coverage across Districts 1, 3, 7 and Thu Duc. You’ll use your eSIM constantly here. For Grab bookings, Google Maps navigation through the city’s chaotic one-way streets, GrabFood delivery, real-time translation of menus in the Ben Thanh Market area, and checking reviews before eating. Viettel has the most stable 5G rollout across central districts. Signal is consistent in all major tourist areas including Bui Vien backpacker street, the War Remnants Museum, and Cu Chi Tunnels.
- HanoiExcellent 4G coverage throughout the Old Quarter, Hoan Kiem Lake area, and beyond. You’ll rely on your eSIM for navigating the Old Quarter’s maze of narrow streets (many are one-way or motorbike-only), booking Grab from Noi Bai airport, researching temples and galleries, and booking overnight trains or buses forward to Ha Long Bay. The Grab pickup zone at Noi Bai requires you to walk some distance from the terminal. Have Google Maps open to find the correct exit.
- Ha Long BayMobile signal is intermittent on cruise boats and improves noticeably on the upper sun deck versus below deck. Ha Long Bay Cruises’ connectivity guide confirms 3G/4G is reachable from the sundeck on most vessels, while the restaurant area has the strongest onboard Wi-Fi. Download offline Google Maps of the bay and any walking areas (Cat Ba Island) before boarding. Most premium cruise operators offer onboard Wi-Fi but speeds are slow. Rely on your eSIM for anything important.
- Da Nang / Hoi AnAll three major networks perform well in Da Nang city and along My Khe Beach. In Hoi An’s Ancient Town (a vehicle-restricted UNESCO zone), you’ll use your eSIM for navigating lantern-lit alleyways, booking bicycle hire, and translating tailor shop sizing charts. Viettel maintains the most stable signal around the Marble Mountains and on the road between Da Nang and Hoi An. Coverage is consistent at all major beaches (Non Nuoc, An Bang).
- Sapa / Northern HighlandsCoverage is patchy outside town centres due to altitude and mountainous terrain. Unusual Nomad’s 2026 coverage guide found Viettel usable in most Sapa villages and along major roads, while Mobifone and Vinaphone drop out frequently on mountain passes. Download offline maps of the Muong Hoa Valley trekking routes before leaving Sapa town. For the Ha Giang Loop, Viettel is the only network with meaningful coverage between Dong Van and Meo Vac. Non-Viettel eSIMs will lose signal for extended stretches.
- Phu QuocStrong coverage in Duong Dong town and the main resort strip (Long Beach, Ong Lang). Viettel performs best on the island’s northern roads and the quieter eastern coast. Resort areas have strong Wi-Fi as a backup, but you’ll need mobile data for Grab bike rentals, booking boat trips to the Phu Quoc archipelago’s outer islands, and navigating to hidden beaches. Coverage thins out on dirt tracks to secluded northern beaches.
- HueGood 4G coverage in central Hue city and around the Imperial Citadel. Viettel performs best in rural districts and along the Perfume River. You’ll use your eSIM for navigating between the Imperial Citadel, royal tombs spread across a wide area, and Dong Ba Market. The road between Hue and Da Nang through the Hai Van Pass has variable signal. Download that section offline before the drive.
Verdict: eSIM4.com
After testing every major eSIM provider for Vietnam across routes from Ho Chi Minh City to the northern highlands, eSIM4 is our top recommendation. It runs on Viettel for the best chance of staying connected in Vietnam from day one, and pricing starts from $2.98. The most competitive entry point of any provider on this list.
With an instant QR code setup and optional Yabb app for calls and SMS, it’s the fastest way to get connected in Vietnam.
Why We Chose eSIM4
- Best Network: Viettel 4G/5G coverage across Vietnam. The widest rural and coastal reach of any carrier.
- Real Phone Number: Optional Yabb app adds calls and SMS on a routable number.
- Widest Plan Range: 1 GB to unlimited 30-day, starting from $2.98.
- Instant Setup: Install before you fly, auto-connect on landing.
- 24/7 Support: Customer support available 24/7 via email, chat, and WhatsApp.
How To Make Calls With eSIM In Vietnam
Most travel eSIM options like eSIM4 provide data-only plans, which means you’ll rely on messaging apps like WhatsApp for calls. However, there’s also a dedicated solution specifically designed for calling with your eSIM: Yabb.
Using Yabb for International Calls with Your eSIM
Yabb is owned by eSIM4 and provides a seamless way to make international calls using your eSIM data connection. With Yabb, you can:
Yabb Calling Features
- Pay As You Go: Purchase calling minutes as you need them with flexible calling packages.
- Clear Call Quality: Enjoy crystal-clear quality connections for your calls.
- Call Anywhere: Make calls using your data to friends and family on any landline or mobile, no matter where you are in Vietnam.
- Multiple Countries: Call to 200+ countries worldwide to stay in touch with family.
- No Hidden Fees: Transparent pricing with no surprise charges or contracts.
- Download the App: Available on both iPhone App Store and Google Play.
Yabb integrates perfectly with your eSIM4 data plan, allowing you to make calls using your data plan without relying solely on WhatsApp, FaceTime, or other apps. This is especially useful if you need to call local Vietnamese numbers for bookings, reservations, or emergencies while travelling in Vietnam.
Learn More About Yabb Calling →Why eSIMs Work Better in Vietnam
Buying a physical SIM card in Vietnam can sometimes be a hassle, involving language barriers and time spent at airport kiosks.
The eSIM advantage: Travel eSIMs bypass this completely. Because you are roaming on partner networks (like Viettel or VNPT), no local identity verification (KYC) is typically required for data-only plans. You simply scan, activate, and connect the moment your plane touches down.
Common Questions Answered
Will my phone work with an eSIM in Vietnam?
Most smartphones manufactured after 2018 support eSIM technology. This includes iPhone XR and newer, Samsung Galaxy S20 and newer, and Google Pixel 3 and newer. Check your settings or dial *#06# to see if an EID number appears.
Can I use WhatsApp with a new eSIM?
Yes. When you switch to an eSIM for data, WhatsApp and other video calling apps continue to work exactly as before. Select “Keep” and you can continue using your original account and contacts seamlessly.
Which network is best in Vietnam?
Viettel typically offers the most extensive coverage across Vietnam, especially in rural areas. Vinaphone and Mobifone are also major reliable carriers. Our top recommendation, eSIM4, operates on these premium networks.
Can I share my data (Hotspot)?
Yes, most providers allow you to use your phone as a hotspot for tethering, including eSIM4, Airalo, and Nomad. However, Holafly (Unlimited plans) restricts hotspot usage.
Is Airalo a good eSIM for Vietnam?
When choosing between Airalo or Holafly for Vietnam, the Airalo eSIM is a reliable option. It connects through Viettel or Vinaphone and benefits from a polished app with good device compatibility.
Its 10 GB / 30-day plan at $18 is solid value. That said, eSIM4 offers the same Viettel network from $2.98, undercutting Airalo at every comparable data tier.
Is it better to get an eSIM or physical SIM in Vietnam?
An eSIM wins for most travellers. You install it before you fly, skip the passport-registration queue at the airport SIM counter, and keep your home number active for calls. Physical SIMs at Tan Son Nhat and Noi Bai cost $7–11 for a week and require your passport, but are a good fallback if your phone doesn’t support eSIM.
Which SIM card is best for travel in Vietnam?
For eSIM users, eSIM4 on the Viettel network offers the best combination of coverage, price, and plan range. For a physical SIM, Viettel gives the widest rural reach across all of Vietnam including the northern highlands and Mekong Delta. MobiFone is a solid urban alternative if you’re sticking to cities.
Is Viettel eSIM good?
Yes. Viettel is Vietnam’s dominant carrier with 4G coverage reaching over 95% of the population.
It consistently outperforms Vinaphone and MobiFone in rural and coastal areas. ESIM4 routes through Viettel, which is why it’s our top pick for travellers heading outside the major cities.
Peter Moore
eSIM Content Writer
Peter has spent 7+ years in telecommunications marketing across mobile apps, SMS platforms, international calling, and eSIM services. He tests eSIM plans on real devices so the coverage and pricing data you read here reflects what travellers actually experience on the ground.
