eSIM for Vietnam: What Actually Works in 2026
The best-value Vietnam eSIM in 2026 is Travelsim Asia at $9.50 / 5 GB / 30 days on Vietnamobile + Vinaphone — fixed-speed plans, no app, no account, hotspot supported. Nomad at $10.00 / 5 GB / 30 days on three carriers (MobiFone + Vinaphone + Vietnamobile) is the strongest tri-carrier alternative. Saily at $10.99 and Airalo at $11.00 are close. For flat per-day “unlimited,” Holafly starts at $11.70 for 3 days (FUP applies, exact daily threshold not published).
The 5 Things That Actually Matter
1. Network coverage. Vietnam has three major mobile networks: Viettel (largest, military-owned), Vinaphone (VNPT), and MobiFone. Viettel has the strongest nationwide footprint including the Mekong Delta, Sapa, and remote areas. Vinaphone is strong in cities and tourist areas. Most travel eSIMs partner with Vinaphone or Viettel.
2. Throttling and Fair Usage Policies. Holafly throttles to 256–1024 Kbps after a soft cap (~90 GB/month referenced; daily threshold not published). Saily unlimited throttles after daily cap. Nomad’s “unlimited” Vietnam is actually 2 GB/day before throttling. Fixed plans (1 GB, 5 GB, etc.) run at full speed throughout.
3. Setup friction. Most providers require an app. Travelsim Asia is the exception — no app, no account, eSIM by email.
4. Top-up flexibility. Vietnam’s pace and cheap food prices mean you’ll likely under-buy data on your first trip. Travelsim Asia top-ups via a unique link tied to your eSIM. Most others require app top-ups.
5. Price per usable GB. Vietnam is one of the cheapest destinations globally for eSIMs. Fixed 5 GB plans start at $9.50 (Travelsim Asia). 1 GB plans start at $3.99 (Saily) or $4.99 (Travelsim Asia).
Provider Comparison Table
All prices verified April 2026. Plans shown are 5 GB / 30 days where available, or comparable tier.
| Provider | Price / GB | Data Cap | Network | Best For |
|---|---|---|---|---|
 Best Value | $9.50 / 5 GB | 1–20 GB plans | Vietnamobile + Vinaphone | Cheapest 5 GB, no app |
 Nomad | $10.00 / 5 GB | 1–50 GB + unlimited | MobiFone + Vinaphone + Vietnamobile | Tri-carrier coverage |
 | $10.99 / 5 GB | 1–20 GB + unlimited | Vietnamese carriers | Lowest 1 GB ($3.99) |
 | $11.00 / 5 GB | 1–50 GB plans | Vinaphone | Largest plan ($49 / 50 GB) |
 | $12 / 10 GB | Fixed + monthly subscriptions | VNPT | Cheapest 10 GB, monthly plans |
 | Unlimited only | Unlimited (FUP, threshold not published) | GPC Vinaphone (VNPT) | Flat per-day pricing |
Best Value Nomad For Vietnam, Travelsim Asia at $9.50 / 5 GB / 30 days is the cheapest fixed plan. Nomad at $10.00 is a close second with the bonus of tri-carrier coverage (MobiFone + Vinaphone + Vietnamobile). Ubigi wins the 10 GB tier at $12 (vs Nomad $17, Airalo $18). Note: none of these route through Viettel (Vietnam’s largest carrier) — for Viettel coverage in remote areas, you’d need a local SIM.
Provider Breakdowns
- + Cheapest 5 GB plan ($9.50 / 30 days)
- + Dual-carrier (Vietnamobile + Vinaphone)
- + No app, no account — eSIM by email
- + Hotspot/tethering supported on all plans
- + Top-ups via unique link tied to your eSIM
- – No unlimited option
- – No coverage on Viettel network
Nomad - + Tri-carrier coverage (MobiFone + Vinaphone + Vietnamobile)
- + 5 GB at $10 / 30 days, 50 GB at $39 / 30 days
- + Hotspot/tethering supported on all plans
- + Unlimited plans available (5/10 days)
- – Newer brand, smaller user base
- – No coverage on Viettel
- + Lowest 1 GB entry price ($3.99 / 7 days)
- + 5 GB at $10.99 / 30 days, 20 GB at $28.99 / 30 days
- + Built by NordVPN — strong privacy posture
- – Specific carrier(s) not publicly disclosed
- – Unlimited plans throttle after daily cap
- + Wide plan range from 1 GB to 50 GB ($49 / 50 GB / 30 days)
- + Reliable Vinaphone network nationwide
- + Strong regional Asia plans for multi-country trips
- – Single-carrier (Vinaphone) — no fallback
- – App required for purchase
- + Flat per-day pricing — no need to estimate usage upfront
- + Connects to GPC Vinaphone (VNPT)
- + Live chat support 24/7
- + 1-day plans available for short layovers
- – FUP threshold for Vietnam not publicly disclosed
- – Significantly more expensive than fixed plans for moderate users
- – Hotspot restricted on most plans
Which eSIM for Your Trip
How Vietnam eSIM Coverage Works
Vietnam has three major mobile networks. Coverage quality varies significantly between urban and rural areas.
- Viettel — Vietnam’s largest carrier (military-owned). Strongest nationwide footprint including the Mekong Delta, Sapa, Ha Giang, Phu Quoc, and Con Dao islands. Best 4G/5G coverage in remote areas.
- Vinaphone (VNPT) — second-largest, strong in cities (Hanoi, Ho Chi Minh, Da Nang, Hoi An, Hue). Solid coverage on most tourist routes.
- MobiFone — third-largest, strong urban coverage. Often paired with Saily and other travel eSIMs.
For most travelers visiting Hanoi, Ho Chi Minh, Hoi An, Da Nang, and Phu Quoc, all three networks work fine. For remote areas (Sapa trekking, Mekong Delta, Ha Giang Loop, Con Dao), Viettel is the most reliable.
Throttling and Fair Usage Policies
- Holafly Vietnam: ~90 GB/month soft cap referenced; daily threshold not published. Throttles to 256–1024 Kbps until reset.
- Nomad Vietnam unlimited: 2 GB/day cap before throttling
- Saily unlimited: throttles after daily cap (varies by plan)
- Fixed plans (Travelsim Asia, Airalo, Saily fixed, Nomad fixed): full speed for the entire allowance
Free Wi-Fi in Vietnam
Free Wi-Fi is excellent and ubiquitous — most cafés, hotels, restaurants, even street food stalls offer free Wi-Fi. Speeds vary but are generally fast in cities. You’ll lean on mobile data for navigation, ride-hailing (Grab), and translation between Wi-Fi spots.
How Much Data Do You Need?
Most Vietnam travelers using Grab, Maps, and messaging land in the middle row. A 5 GB plan covers a full week comfortably with café Wi-Fi for heavier tasks.
Frequently Asked Questions
What’s the cheapest eSIM for Vietnam in 2026?
Travelsim Asia at $9.50 for 5 GB / 30 days is the cheapest 5 GB plan. For 1 GB, Saily at $3.99 / 7 days is the lowest entry price. Vietnam is one of the cheapest destinations globally for travel eSIMs.
Are “unlimited” Vietnam eSIMs really unlimited?
No. Holafly throttles after ~90 GB/month (daily threshold not published). Nomad’s “unlimited” is actually 2 GB/day before throttling. Saily unlimited throttles after a daily cap. Fixed plans (5 GB, 10 GB, etc.) run at full speed for the entire allowance.
Will my eSIM work in Sapa, Ha Giang, and rural areas?
No major travel eSIM routes directly through Viettel (Vietnam’s largest carrier with the strongest rural footprint). Vinaphone-based eSIMs (Travelsim Asia, Airalo, Holafly) work well in towns and main routes but can be spotty on remote mountain passes. Nomad’s tri-carrier setup (MobiFone + Vinaphone + Vietnamobile) gives the best fallback. For deep rural travel like the Ha Giang Loop, consider a local Viettel SIM as backup.
Can I use an eSIM and my regular SIM at the same time?
Yes. Most modern phones support Dual SIM (one physical + one eSIM). Keep your home SIM for calls and texts while using the eSIM for data in Vietnam. On iPhone: Settings → Cellular → set your travel eSIM as the primary data line.
Should I buy a SIM at the airport instead?
Local SIMs at Hanoi (HAN), Ho Chi Minh (SGN), and Da Nang (DAD) are cheap (~$5–10 for 30-day tourist plans) but require passport registration and queueing. eSIMs at $3.99–$9.50 for 1–5 GB offer better convenience for short trips. For long stays (60+ days), a local Viettel SIM with monthly top-ups can be cheaper.