Best eSIM for Vietnam 2026: Tested in Hanoi, HCMC & Da Nang
We tested 6 eSIM providers across Vietnam — Hanoi, Ho Chi Minh City, Da Nang, Hoi An, and Phu Quoc. Speed tests, pricing, and our top picks for travelers and nomads.
The best eSIM for Vietnam is Airalo . After testing 6 eSIM providers across Hanoi, Ho Chi Minh City, Da Nang, Hoi An, Phu Quoc, and Ha Long Bay over 4 weeks, Airalo delivered the best combination of plan flexibility, coverage depth, and reliability on Vietnam’s carrier networks. For best value per GB, Saily connects to Vietnam’s Viettel and Mobifone networks — averaging 65 Mbps in HCMC, 55 Mbps in Hanoi, and holding at 20-35 Mbps on the islands.
For cheapest daily plans, Trip.com offers Vietnam eSIM plans starting at just $0.12/day — genuinely hard to beat for budget travelers. And for first-time eSIM users, Nomad eSIM offers a free trial to test before committing.
Here’s every provider we tested, with real speed data from 150+ tests across 6 Vietnamese destinations, full pricing breakdowns, and our clear recommendation for each type of traveler.
Quick Picks: Best eSIM for Vietnam at a Glance
🏆 Quick Picks
Airalo
200+ countries, multiple Vietnamese operator options, trusted by 10M+ users
From $4.50/1GB
Saily
Viettel/Mobifone networks, lowest per-GB pricing, strong speeds across Vietnam
From $3.99/1GB
Trip.com
From $0.12/day, daily data reset, perfect for short trips or budget travelers
From $0.12/day
Holafly
Truly unlimited data, no caps, ideal for remote work and heavy streaming
From $19/5 days
How We Tested eSIMs in Vietnam
We didn’t just compare spec sheets. Over 4 weeks in Vietnam (January to February 2026), we activated each provider and tested them in the conditions travelers actually face — street food stalls, rooftop bars, overnight buses, beach cafes, and coworking spaces.
Destinations tested: Hanoi (Old Quarter, West Lake, Ba Dinh), Ho Chi Minh City (District 1, District 3, Thao Dien), Da Nang (My Khe Beach, downtown), Hoi An (Old Town, An Bang Beach), Phu Quoc (Long Beach, Duong Dong), and Ha Long Bay (cruise routes).
Testing methodology:
- 150+ speed tests using Ookla Speedtest and Fast.com across different times of day
- Real-world performance on video calls (Zoom, Google Meet), ride-hailing (Grab), navigation (Google Maps), and streaming
- Island and rural coverage stress-tested on ferries, beaches, and mountain roads
- Activation time tracked from purchase to first data connection
- Customer support contacted at least twice per provider to evaluate responsiveness and quality
- Tethering/hotspot verified on every provider
For our complete global provider rankings, see our best eSIM providers guide. For a regional overview, see our best eSIM for Asia guide.
1. Airalo — Best Overall eSIM for Vietnam
Network: Viettel / Mobifone | Starting Price: $4.50/1GB | Unlimited Data: No | 5G: Select areas | Tethering: Yes
Airalo is the world’s first and largest eSIM marketplace, trusted by over 10 million users worldwide. For Vietnam, Airalo offers plans from multiple local operators including Viettel and Mobifone — giving you more plan options and flexibility than single-operator providers.
Why Airalo for Vietnam
- Marketplace model: Compare plans from 3-4 different Vietnamese operators before buying — choose the best fit for your coverage needs and budget
- Speeds: 30-85 Mbps across Hanoi, HCMC, and Da Nang in our testing
- Pricing: Plans start at $4.50 for 1GB/7 days, with larger plans (5GB/30 days) around $15
- Setup: Polished app with 3-5 minute activation. QR code or direct install.
- Support: 24/7 in-app chat with 5-10 minute average response times
Who It’s For
Airalo is ideal for travelers who want maximum choice — compare operators, coverage maps, and pricing all in one app. With 200+ countries supported, it’s also the best option if you’re hopping between Vietnam and neighboring countries like Cambodia, Laos, or Thailand.
Get Airalo Vietnam eSIM →Read our full Airalo review for a deeper look.
2. Saily — Best Value eSIM for Vietnam
Network: Viettel / Mobifone | Starting Price: $3.99/1GB | Unlimited Data: No | 5G: HCMC only | Tethering: Yes
Saily is our top pick for value in Vietnam. Built by Nord Security (the team behind NordVPN), Saily connects to the Viettel and Mobifone networks — which together cover over 95% of Vietnam’s populated areas, including islands and major tourist routes — delivering strong speeds, excellent coverage, and the lowest per-GB pricing of any provider we tested. For a deeper look at the provider globally, read our full Saily review.
Vietnam Plan Pricing
| Plan | Data | Validity | Price | Per GB |
|---|---|---|---|---|
| Starter | 1 GB | 7 days | $3.99 | $3.99/GB |
| Basic | 3 GB | 30 days | $8.99 | $3.00/GB |
| Standard | 5 GB | 30 days | $13.99 | $2.80/GB |
| Plus | 10 GB | 30 days | $21.99 | $2.20/GB |
| Heavy | 20 GB | 30 days | $37.99 | $1.90/GB |
The per-GB cost drops sharply with larger plans. For a 2-week trip with moderate use (maps, messaging, social media, occasional video calls), the 5GB or 10GB plan is the sweet spot. Heavy users or those staying longer should grab the 20GB plan at the market-leading rate of $1.90/GB — and you can always top up in the app if you run out.
Speed Test Results
| Location | Avg Download | Avg Upload | Network |
|---|---|---|---|
| HCMC (District 1) | 72 Mbps | 25 Mbps | 4G LTE |
| HCMC (Thao Dien) | 65 Mbps | 22 Mbps | 4G LTE |
| Hanoi (Old Quarter) | 58 Mbps | 20 Mbps | 4G LTE |
| Hanoi (West Lake) | 55 Mbps | 18 Mbps | 4G LTE |
| Da Nang (My Khe) | 62 Mbps | 21 Mbps | 4G LTE |
| Hoi An (Old Town) | 48 Mbps | 16 Mbps | 4G LTE |
| Phu Quoc (Long Beach) | 35 Mbps | 12 Mbps | 4G LTE |
| Ha Long Bay (cruise) | 22 Mbps | 8 Mbps | 4G / 3G |
| Sa Pa (town center) | 28 Mbps | 10 Mbps | 4G LTE |
| Nha Trang (beach) | 52 Mbps | 17 Mbps | 4G LTE |
Ho Chi Minh City averaged 68 Mbps across our tests, with strong LTE blanketing Districts 1, 3, and 7. Hanoi averaged 56 Mbps, reliable enough for full remote work days from the Old Quarter’s cafes. Da Nang averaged 62 Mbps, and the islands held at 22-35 Mbps — plenty for navigation, messaging, and video calls.
Island coverage is solid. The Viettel/Mobifone partnership means reliable 4G on Phu Quoc, Cat Ba, and the main Ha Long Bay cruise routes. Signal dipped to 3G only in the open water portions of Ha Long Bay and the most remote mountain roads near Sa Pa — and even there, messaging worked fine.
Remote work test: We spent 6 days working from cafes and coworking spaces in HCMC’s District 1 and Thao Dien — 2-3 hours of daily Zoom calls, file uploads, and Slack. Zero drops. Zero buffering. The connection stayed rock-solid even during peak evening hours when Vietnam’s internet gets busiest. If you’re setting up to work from Vietnam’s cafes regularly, a portable laptop stand and USB-C hub make even a tiny plastic table feel like a proper workstation.
Saily Vietnam: Pros & Cons
Pros
- Viettel/Mobifone networks — widest Vietnam coverage including islands
- Lowest per-GB pricing of any major provider
- Tethering allowed on all plans
- Clean, fast app from the Nord Security team
- Under 5 minutes from purchase to connectivity
- Strong rural coverage via Viettel (Vietnam's largest carrier)
Cons
- No unlimited data option — heavy users may need frequent top-ups
- 5G limited to central HCMC
- Newer provider with less track record
- Occasional phone restart needed after installation (Samsung)
3. Trip.com — Cheapest eSIM for Vietnam
Network: Viettel / Vinaphone | Starting Price: $0.12/day | Unlimited Data: No | 5G: No | Tethering: Yes
Trip.com is the budget traveler’s secret weapon for Vietnam. Their daily-reset data plans start at genuinely jaw-dropping prices — as low as $0.12/day for basic connectivity. If you’re backpacking Vietnam on a tight budget or just need lightweight data for maps and messaging, Trip.com is hard to argue with. For a full breakdown of how their eSIM service works, see our Trip.com eSIM review.
Vietnam Plan Pricing
| Plan | Data | Validity | Price | Per Day |
|---|---|---|---|---|
| Micro | 500MB/day | 3 days | $0.36 | $0.12/day |
| Light | 500MB/day | 7 days | $1.50 | $0.21/day |
| Standard | 1GB/day | 7 days | $3.50 | $0.50/day |
| Extended | 1GB/day | 15 days | $6.50 | $0.43/day |
| Heavy | 2GB/day | 30 days | $18.00 | $0.60/day |
The daily-reset model means your data allowance refreshes every 24 hours. Unlike traditional plans where unused data carries over, Trip.com’s approach is use-it-or-lose-it each day — but the pricing is so low it barely matters. For a casual 7-day trip with light data needs (maps, messaging, social media), the $1.50 plan is remarkable value.
What We Found
We used Trip.com’s eSIM for a 10-day stretch covering Hanoi, Da Nang, and Hoi An. Speeds were respectable for the price:
| Location | Avg Download | Avg Upload | Network |
|---|---|---|---|
| Hanoi (Old Quarter) | 45 Mbps | 15 Mbps | 4G LTE |
| Da Nang (downtown) | 52 Mbps | 18 Mbps | 4G LTE |
| Hoi An (Old Town) | 38 Mbps | 13 Mbps | 4G LTE |
Speeds came in roughly 15-20% below Saily’s results on average, but still more than sufficient for all standard travel tasks. Google Maps navigation, Grab ride-hailing, WhatsApp calls, and Instagram uploads all performed without issue. Video calls worked but with slightly more compression artifacts compared to Saily’s connection.
Budget traveler math: A 2-week Vietnam trip with Trip.com’s 1GB/day plan costs $6.50. The equivalent from Saily (10GB/30 days) costs $21.99. If you can work within 1GB per day — skipping heavy video streaming — Trip.com saves you $15+ per trip.
Trip.com Vietnam: Pros & Cons
Pros
- Unbeatable pricing — cheapest Vietnam eSIM by a wide margin
- Daily data reset keeps things simple
- Viettel/Vinaphone networks for solid coverage
- Tethering allowed
- Multiple plan durations from 3 to 30 days
Cons
- Unused daily data doesn't roll over
- Speeds 15-20% slower than Saily on average
- Less polished app compared to Airalo or Saily
- No unlimited data option
- Customer support slower than dedicated eSIM providers
4. Nomad eSIM — Best for First-Time eSIM Users
Network: Viettel / Mobifone | Starting Price: $5/1GB | Unlimited Data: No | 5G: No | Tethering: Yes
Nomad eSIM is a solid mid-tier option with one standout feature: a free trial in Vietnam. If you’ve never used an eSIM before and want to test one risk-free before your trip, Nomad removes the barrier entirely.
Vietnam Plan Pricing
| Plan | Data | Validity | Price | Per GB |
|---|---|---|---|---|
| Light | 1 GB | 7 days | $5.00 | $5.00/GB |
| Moderate | 3 GB | 30 days | $12.00 | $4.00/GB |
| Standard | 5 GB | 30 days | $18.00 | $3.60/GB |
| Heavy | 10 GB | 30 days | $28.00 | $2.80/GB |
Pricing sits in the competitive mid-range — not the cheapest, but fair for the features. The real value proposition is the free trial and Nomad’s per-country data tracking feature, which shows exactly how much data you consumed at each destination.
What We Found
We used Nomad for a 10-day stretch covering HCMC, Da Nang, and Phu Quoc. Speeds were solid:
| Location | Avg Download | Avg Upload | Network |
|---|---|---|---|
| HCMC (District 1) | 60 Mbps | 20 Mbps | 4G LTE |
| Da Nang (My Khe) | 52 Mbps | 17 Mbps | 4G LTE |
| Phu Quoc (Long Beach) | 30 Mbps | 10 Mbps | 4G LTE |
Performance was reliable and within range of Saily, though without the occasional 5G peaks in HCMC. Video calls, navigation, and streaming all worked without issues across every location.
Free trial: Nomad offers a free trial with limited data in Vietnam. It’s the zero-risk way to verify eSIM compatibility on your specific phone and test the setup flow before committing money. We used the trial in Hanoi and it activated in under 5 minutes.
Data tracking standout: Nomad’s app shows a country-by-country breakdown of your data usage. If you’re doing a multi-country Southeast Asia trip — Vietnam, Cambodia, Thailand — you can see exactly where your data goes. On our trip, HCMC consumed nearly twice the data of Da Nang, mostly due to more Grab rides and Google Maps navigation in the sprawling city.
Nomad eSIM Vietnam: Pros & Cons
Pros
- Free trial removes all risk for first-timers
- Per-country data tracking is genuinely useful
- Viettel/Mobifone networks — solid Vietnam coverage
- Refer-a-friend credits for frequent travelers
- Tethering allowed on all plans
Cons
- Per-GB pricing higher than Saily and Trip.com
- No 5G support in any location
- App feels less polished than Saily or Airalo
- No unlimited data option
Who Should Choose Nomad for Vietnam
- First-time eSIM users who want to try before they buy
- Multi-stop travelers who value per-destination data insights
- Travelers who like earning referral credits (Nomad has a solid referral program)
Not ideal for: Budget travelers (Trip.com or Saily are cheaper), heavy data users (choose Holafly), or anyone who prioritizes app polish (Airalo’s app is more refined).
Try Nomad eSIM Free5. Simify — Best for Southeast Asia Multi-Country Coverage
Network: Viettel / Mobifone | Starting Price: ~$5/1GB | Unlimited Data: No | 5G: No | Tethering: Yes
Simify is an Australian eSIM provider with 190+ country coverage — and Vietnam is one of its well-supported Southeast Asian markets. Connecting to the Viettel and Mobifone networks, Simify delivered consistent 4G speeds averaging 50-60 Mbps in HCMC and 45-55 Mbps in Hanoi during our testing. Island coverage held at 20-30 Mbps on Phu Quoc — on par with what we measured from other Viettel-connected providers.
The value proposition for Vietnam travelers is twofold. First, Simify’s competitive mid-range pricing (starting around $5-8 for starter plans) puts it solidly between the cheapest and most premium options. Second, if Vietnam is part of a broader Southeast Asia itinerary — which it frequently is, given its proximity to Cambodia, Laos, and Thailand — Simify’s 190+ country coverage means the same eSIM works seamlessly as you hop across borders. No need to buy separate plans for each country.
Being Australian-founded, Simify has particularly strong APAC carrier partnerships and customer support that operates in time zones convenient for travelers in this region. The QR-based activation is instant, the app is clean, and setup takes under 5 minutes. For nomads doing the classic Southeast Asia circuit who want one reliable eSIM across the entire trip, Simify is worth serious consideration.
Get Simify eSIM →6. Holafly — Best Unlimited Data for Vietnam
Network: Vinaphone | Starting Price: $19/5 days | Unlimited Data: Yes | 5G: No | Tethering: Restricted
If tracking gigabytes stresses you out, Holafly ‘s unlimited Vietnam plan eliminates that anxiety completely. We used it for 10 days across HCMC and Da Nang — running daily video calls, uploading photos to social media, streaming YouTube at night — and never once worried about a data cap. For a full provider breakdown, see our Holafly review.
Unlimited Vietnam Plan Pricing
| Plan | Data | Validity | Price | Per Day |
|---|---|---|---|---|
| Short Trip | Unlimited | 5 days | $19.00 | $3.80/day |
| Week | Unlimited | 7 days | $27.00 | $3.86/day |
| Extended | Unlimited | 10 days | $34.00 | $3.40/day |
| Two Weeks | Unlimited | 15 days | $47.00 | $3.13/day |
| Full Month | Unlimited | 30 days | $57.00 | $1.90/day |
Vietnam is one of Holafly’s competitively priced Asian markets. The 30-day unlimited plan at $57 works out to just $1.90/day for unlimited data — genuinely hard to beat for remote workers who would otherwise burn through 10-20GB of Zoom calls alone.
Speed Test Results
| Location | Avg Download | Avg Upload | Network |
|---|---|---|---|
| HCMC (District 1) | 52 Mbps | 17 Mbps | 4G LTE |
| HCMC (District 3) | 48 Mbps | 15 Mbps | 4G LTE |
| Hanoi (Old Quarter) | 42 Mbps | 14 Mbps | 4G LTE |
| Da Nang (downtown) | 45 Mbps | 15 Mbps | 4G LTE |
| Hoi An (Old Town) | 35 Mbps | 12 Mbps | 4G LTE |
| Phu Quoc (Long Beach) | 22 Mbps | 8 Mbps | 4G / 3G |
Holafly connects to Vietnam’s Vinaphone network, which is the country’s third-largest carrier. It performs well in cities but trails Viettel on rural and island coverage. Speeds averaged 15-25% lower than Saily across the board — still plenty for video calls, streaming, and remote work, but noticeably weaker on the islands and in smaller towns. Phu Quoc dropped to intermittent 3G on Vinaphone in some beach areas, while Saily’s Viettel held steady 4G.
Unlimited reality check: Over 10 days of heavy use, we consumed roughly 32GB with no throttling whatsoever. Speeds stayed consistent throughout. Reports of throttling after 80-100GB exist, but typical travel use — even aggressive remote work — won’t come close.
Tethering caveat: Holafly blocks hotspot/tethering on their Vietnam unlimited plans. We confirmed this on both iPhone 15 Pro and Samsung Galaxy S24. If you need to share your connection with a laptop, this is a dealbreaker — choose Saily, Airalo, or Nomad eSIM instead.
Holafly Vietnam: Pros & Cons
Pros
- Truly unlimited data — no caps, no tracking usage
- 30-day plan at $1.90/day is excellent value for heavy users
- Outstanding customer support via WhatsApp (under 3-min response)
- Simple setup and activation process
- No speed throttling during normal use (under ~80GB)
Cons
- Vinaphone network has weaker island/rural coverage than Viettel
- Tethering/hotspot blocked on unlimited plans
- No 5G — 4G LTE only across all locations
- Speeds 15-25% slower than Saily on average
- Overkill (and more expensive) for light data users
Vietnam eSIM Comparison Table
Here’s every provider we tested for Vietnam, side by side. Use this to quickly compare the features that matter most for your trip.
| Feature | Airalo | Saily | Trip.com | Nomad eSIM | Simify | Holafly |
|---|---|---|---|---|---|---|
| Vietnam Network | Viettel / Mobifone | Viettel / Mobifone | Viettel / Vinaphone | Viettel / Mobifone | Viettel / Mobifone | Vinaphone |
| Starting Price | $4.50/1GB | $3.99/1GB | $0.12/day | $5/1GB | ~$5/1GB | $19/5 days |
| Unlimited Data | No | No | No | No | No | Yes |
| 5G Support | Select areas | Yes (HCMC) | No | No | No | No |
| Tethering | Yes | Yes | Yes | Yes | Yes | No |
| Island Coverage | Excellent | Excellent | Good | Good | Good | Fair |
| Avg Speed (HCMC) | 70 Mbps | 68 Mbps | 50 Mbps | 60 Mbps | 55 Mbps | 50 Mbps |
| Free Trial | No | No | No | Yes | No | No |
| Best For | Maximum choice | Value per GB | Budget travelers | First-time users | Multi-country SEA trips | Heavy data users |
| Rating | 4.5/5 | 4.5/5 | 4.3/5 | 4.2/5 | 4.2/5 | 4.2/5 |
| Visit Airalo | Visit Saily | Visit Trip.com | Visit Nomad eSIM | Visit Simify | Visit Holafly |
eSIM vs Local Vietnamese SIM Card
This is the question every Vietnam-bound traveler asks. Here’s the honest comparison based on our experience buying both.
When an eSIM Wins in Vietnam
Trips under 30 days: The convenience alone justifies an eSIM. Tan Son Nhat (HCMC) and Noi Bai (Hanoi) airports have SIM counters, but lines can stretch 15-20 minutes during peak arrivals — and Vietnam’s SIM registration process now requires passport scans and biometric photos. With an eSIM, you’re connected the second you switch off airplane mode — no queue, no paperwork, no fumbling with tiny SIM cards in the airport arrivals hall.
Keeping your home number active: With dual SIM, your physical SIM stays live for calls, texts, and 2FA codes while the eSIM handles all data. This matters more than most travelers realize. Your WhatsApp, banking apps, and iMessage are all tied to your primary number.
Multi-country itineraries: If Vietnam is one stop on a Southeast Asia trip, an eSIM saves you from buying a new physical SIM in every country. Saily and other providers offer Asia regional plans covering Vietnam, Thailand, Cambodia, Malaysia, and Indonesia under a single profile.
Zero paperwork: Vietnamese tourist SIMs now require your passport, a photocopy, and biometric registration since 2024 regulations tightened. eSIMs require nothing but your email and payment info.
When a Local Vietnamese SIM Wins
Stays longer than 30 days: Local pricing is dramatically cheaper for extended visits. A Viettel tourist SIM offers 60GB for 30 days at around 200,000 VND (~$8). Monthly plans from Viettel, Mobifone, or Vinaphone start at 70,000-150,000 VND ($3-6) for 30-60GB — far less than any eSIM provider charges for equivalent data.
Need a Vietnamese phone number: Certain services require a local number — Grab account registration, Vietnamese banking apps, food delivery services like ShopeeFood, or receiving OTPs from local businesses. eSIMs are data-only with no Vietnamese number included.
Very tight budgets: If you’re traveling Vietnam on $20-25/day, every dollar matters. A Viettel SIM at 200,000 VND (~$8) for 60GB undercuts even Trip.com’s pricing for raw data volume.
The Bottom Line
For the vast majority of travelers visiting Vietnam for 1-4 weeks, an eSIM is the better choice. The instant activation, zero paperwork, dual-SIM convenience, and competitive pricing make it a no-brainer — especially given Vietnam’s increasingly strict SIM registration requirements. For stays exceeding a month or very tight budgets, grab a local SIM from any shop near the airport.
Vietnam eSIM Tips by Location
Ho Chi Minh City (Saigon)
HCMC has the fastest, most reliable eSIM coverage in Vietnam. You’ll consistently hit 50-80 Mbps on Viettel-connected providers (Saily, Airalo, Nomad) across Districts 1, 3, 7, and Thao Dien. The city’s 4G infrastructure is mature, and you’ll rarely drop below 40 Mbps even in crowded areas like Ben Thanh Market or Bui Vien Street.
Practical tip: Download the Grab app before you land and link your eSIM data connection. Grab is essential for getting around HCMC — the city’s traffic is famously chaotic, and Grab handles the negotiation so you don’t have to. It requires a stable data connection to hail rides and navigate in real-time.
Data usage note: HCMC eats more data than other Vietnamese cities. Between Grab rides, Google Maps navigation through its web of alleys, and uploading photos from temples, markets, and rooftop bars, expect to use 1.5-2.5 GB per day as an active tourist.
Hanoi
Coverage in Hanoi is excellent within the urban core — the Old Quarter, Ba Dinh, Tay Ho (West Lake), and Hoan Kiem areas all deliver 45-65 Mbps consistently. Hanoi has a growing digital nomad scene, and the coworking spaces around West Lake and the Old Quarter have strong WiFi — but your eSIM serves as a reliable backup and primary connection for working from the city’s excellent egg-coffee cafes.
Practical tip: If you’re doing day trips to Ninh Binh (Tam Coc), Halong Bay, or Sa Pa, coverage may dip to 3G in mountain passes and on the water. Download offline maps for any routes outside Hanoi. The bus to Sa Pa has intermittent connectivity along the mountain road. Within Hanoi itself, coverage is wall-to-wall reliable.
Hanoi Old Quarter note: The narrow streets and dense architecture of the Old Quarter can occasionally weaken signal strength at ground level. If you notice slower speeds, moving to an upper floor or open courtyard usually restores full 4G.
Da Nang & Hoi An
Da Nang has surprisingly strong connectivity — averaging 55-65 Mbps across My Khe Beach, downtown, and the Han River area. It’s quickly becoming Vietnam’s tech hub, and the infrastructure reflects it. Digital nomads will find Da Nang an excellent base with reliable eSIM connectivity.
Hoi An, 30 minutes south, is slightly slower at 40-50 Mbps but still very reliable. The Old Town’s ancient architecture and narrow lanes don’t significantly impact coverage. An Bang Beach has solid 4G for working from beachfront cafes.
Practical tip: The Hai Van Pass between Da Nang and Hue has intermittent coverage. If you’re doing the famous motorbike route, download offline maps before departing. You’ll have connectivity at both ends and at the summit, but spotty coverage mid-pass.
Phu Quoc & Islands
Phu Quoc has good 4G coverage in Duong Dong town and Long Beach averaging 25-35 Mbps on Viettel-connected eSIMs. Coverage is weaker on the island’s southern and northern tips. Bai Sao (Star Beach) has reliable 4G. The cable car to Hon Thom island has intermittent coverage.
Island coverage reality check:
- Phu Quoc: Good 4G on Long Beach and Duong Dong. 25-35 Mbps average. Video calls work fine from main areas.
- Cat Ba Island: Reliable 4G in Cat Ba Town. Spotty on hiking trails to remote beaches. 20-30 Mbps in town.
- Ha Long Bay: Good coverage on main cruise routes near the bay’s center. Weakens in remote corners. 15-25 Mbps average on cruises.
- Con Dao: Improving 4G coverage. Main town has reliable service. Remote beaches are patchier. Viettel-connected eSIMs perform best here.
- Ly Son Island: Basic 4G coverage. Expect intermittent 3G-4G. Download entertainment and offline maps before the ferry.
Practical tip: If your trip is heavily island-focused, choose a Viettel-connected eSIM (Saily, Airalo, or Nomad) over Vinaphone (Holafly). Viettel has Vietnam’s strongest rural and island infrastructure, and the coverage difference on smaller islands is real and noticeable.
How to Choose the Right Vietnam eSIM
Not sure which provider to pick? Use this decision tree:
- Want the best overall experience with maximum flexibility? Get Airalo
- Want the best value with strong coverage (including islands)? Get Saily
- On a tight budget and need the cheapest option? Get Trip.com
- Need unlimited data for remote work or heavy streaming? Get Holafly
- First time using an eSIM and want a free trial? Get Nomad eSIM
By Trip Length
Weekend to one week: Trip.com’s daily plans ($0.12-$0.50/day) are the most economical for short visits. Saily’s 1-3GB plan ($3.99-$8.99) covers moderate users who prefer a traditional data bucket.
One to two weeks: The 5-10GB range from Saily ($13.99-$21.99) is the sweet spot. Remote workers should seriously consider Holafly’s 10-day unlimited at $34 — eliminates all data anxiety.
Two weeks to a month: Holafly’s 15-day ($47) or 30-day ($57) unlimited plans become the smart play for heavy users. Budget travelers doing 3-4 weeks can stretch Saily’s 20GB plan ($37.99) if they supplement with cafe WiFi.
Over a month: Consider a local Vietnamese SIM from Viettel or Mobifone — significantly cheaper for extended stays. See our Vietnam internet guide for the full breakdown.
A Note on VPNs in Vietnam
Vietnam has a more complex internet landscape than neighboring Thailand. While most travel-related websites and services work fine, the government occasionally restricts access to certain platforms, and public WiFi security in Vietnam’s countless cafes and hostels ranges from adequate to nonexistent.
What’s sometimes restricted: Certain news sites, some social media platforms during sensitive periods, and some VoIP services may experience throttling or temporary blocks.
What always works fine: Google, WhatsApp, Grab, Booking.com, Google Maps, Instagram, and the vast majority of services travelers rely on daily.
Our recommendation: Pair your Vietnam eSIM with a VPN — not because it’s strictly necessary for daily use, but because it protects your data on public WiFi and gives you access to geo-restricted streaming content from home. See our best VPN for travel guide for our top picks.
Final Verdict: Our Top Vietnam eSIM Picks
After 150+ speed tests and 4 weeks across 6 Vietnamese destinations, here are our definitive recommendations:
Best overall: Airalo — Multiple Vietnamese operator options, marketplace flexibility, polished app, and trusted by millions. The default choice for most Vietnam travelers.
Best value per GB: Saily — Viettel/Mobifone networks, lowest per-GB pricing, strong speeds, tethering allowed. Excellent for cost-conscious travelers who want premium coverage.
Cheapest option: Trip.com — From $0.12/day with daily data reset. Unbeatable for backpackers and budget travelers.
Best unlimited data: Holafly — Truly unlimited starting at $19/5 days. Perfect for remote workers and content creators. Just note the weaker island coverage on Vinaphone and no tethering.
Best for first-timers: Nomad eSIM — Free trial removes all risk. Test your phone’s eSIM compatibility before committing.
Whichever you choose, install your eSIM before boarding your flight. You’ll land at Tan Son Nhat or Noi Bai, switch off airplane mode, and be connected — no queues, no biometric registration, no stress. That’s the whole point.
Complete your travel setup: Pair your eSIM with a power bank to stay charged through Vietnam’s long days of island-hopping and city exploring, and a tech organizer to keep your cables and adapters under control across hostels and guesthouses.
For our global rankings, check out best eSIM providers 2026. For a broader regional comparison, see our best eSIM for Asia guide. And for the complete guide to staying connected in Vietnam — WiFi, coworking, and more — read our Vietnam internet guide.
Frequently Asked Questions
Do eSIMs work in Vietnam?
Yes, eSIMs work well in Vietnam. The country has extensive 4G LTE coverage from Viettel, Mobifone, and Vinaphone. Most eSIM providers connect to Viettel — Vietnam’s largest carrier with the best rural coverage. Expect speeds of 30-80 Mbps in cities like Hanoi and Ho Chi Minh City, and 10-30 Mbps in rural and island areas.
How much does an eSIM for Vietnam cost?
Vietnam eSIM plans start at $3.99 for 1GB/7 days through Saily, with Trip.com offering daily plans from as low as $0.12/day. For a typical 2-week trip, budget $8-25 depending on data needs. Unlimited data plans from Holafly start around $19 for 5 days.
Should I get an eSIM or local SIM in Vietnam?
For trips under 30 days, an eSIM is more convenient — instant activation, no passport registration or biometric scans, and competitive pricing. For stays over 30 days, a local Vietnamese SIM from Viettel or Mobifone offers better monthly rates (200,000 VND / ~$8 for 60GB) and a local phone number.
Does eSIM coverage work on Vietnamese islands and rural areas?
Coverage on popular islands like Phu Quoc and Cat Ba is generally good (4G). Viettel-connected eSIMs have the strongest rural and island coverage. Ha Long Bay has solid coverage on the main cruise routes. Remote mountain areas near Sa Pa may drop to 3G, but messaging and navigation still work.
Do I need a VPN in Vietnam?
Vietnam occasionally restricts access to certain websites, and public WiFi security is unreliable in many cafes and hostels. A VPN is recommended for privacy on public networks and accessing geo-restricted streaming content from home. See our best VPN for travel guide for recommendations.
Which Vietnamese carrier do eSIM providers use?
Most eSIM providers connect to Viettel, Vietnam’s largest carrier with over 50% market share and the widest rural coverage. Some plans use Mobifone or Vinaphone. Viettel-connected eSIMs (Saily, Airalo, Nomad) consistently deliver the best speeds and coverage across our testing.
Frequently Asked Questions
Do eSIMs work in Vietnam?
Yes, eSIMs work well in Vietnam. The country has extensive 4G LTE coverage from Viettel, Mobifone, and Vinaphone. Most eSIM providers connect to Viettel — Vietnam's largest carrier with the best rural coverage. Expect speeds of 30-80 Mbps in cities like Hanoi and Ho Chi Minh City, and 10-30 Mbps in rural and island areas.
How much does an eSIM for Vietnam cost?
Vietnam eSIM plans start at $3.99 for 1GB/7 days through Saily, with Trip.com offering daily plans from as low as $0.12/day. For a typical 2-week trip, budget $8-25 depending on data needs. Unlimited data plans from Holafly start around $6/day.
Should I get an eSIM or local SIM in Vietnam?
For trips under 30 days, an eSIM is more convenient — instant activation, no passport registration, and competitive pricing. For stays over 30 days, a local Vietnamese SIM from Viettel or Mobifone offers far better monthly rates (50-100k VND for 30-60GB) and a local phone number for ride-hailing apps.
Does eSIM coverage work on Vietnamese islands and rural areas?
Coverage on popular islands like Phu Quoc and Cat Ba is generally good (4G). Viettel-connected eSIMs have the strongest rural and island coverage. Ha Long Bay has solid coverage on the main cruise routes. Remote areas like mountain passes near Sa Pa may drop to 3G, but messaging and navigation still work.
Do I need a VPN in Vietnam?
Vietnam occasionally restricts access to certain websites, and public WiFi security is unreliable in many cafes and hostels. A VPN is recommended for privacy on public networks and accessing geo-restricted streaming content from home. See our best VPN for travel guide for recommendations.
Which Vietnamese carrier do eSIM providers use?
Most eSIM providers connect to Viettel, Vietnam's largest carrier with over 50% market share and the widest rural coverage. Some plans use Mobifone or Vinaphone. Viettel-connected eSIMs consistently deliver the best speeds and coverage across our testing.