Vietnam has experienced an impressive leap in telecommunications infrastructure in recent years. Major cities like Ho Chi Minh, Hanoi, and Da Nang have excellent 4G/5G coverage, and the average speed is higher than in many European countries.
Coverage in Vietnam
| Operator | Coverage | Network | eSIM |
|---|---|---|---|
| Viettel | ✅ National (best) | 4G/5G | ✅ |
| Mobifone | ✅ National | 4G | ✅ |
| Vinaphone | ✅ National | 4G | ✅ |
4G/5G Speed in Vietnam
Recommended Plans for Vietnam
| Days | GB | Est. Price | Profile |
|---|---|---|---|
| 5–7d | 10 GB | €8–12 | Tourist |
| 10–14d | 15 GB | €12–18 | Backpacker |
| 1 month | Monthly plan 30 GB | €20–28 | Nomad |
Best option: Vietnam 15 GB plan for 10 days — €10–16.
Activation
- Purchase the plan on purasim.com before departure
- Install the QR from home with WiFi
- Upon landing, activate the eSIM in Settings → Mobile Data
- Automatic coverage from the airport
Quick Comparison
| Option | Cost 7d | Management |
|---|---|---|
| Spanish Roaming | €50–100 | No management |
| Local Vietnam SIM | €8–18 | In-store paperwork |
| PuraSIM eSIM | €10–20 | 100% digital |
Conclusion
PuraSIM's eSIM for Vietnam is the smartest option: no searching for a SIM upon arrival, no paperwork, with data from the first minute in Ho Chi Minh. Activate it at home before you leave.
Frequently Asked Questions
Are there internet restrictions in Vietnam?
Vietnam blocks some political content, but services used by travelers (Google, Facebook, Instagram, YouTube, WhatsApp) are available without restrictions.
Does eSIM work in Halong Bay?
On cruises in Halong, there is coverage in areas closer to the coast. In more remote areas, it may be irregular or 3G.
How many GB do I need to travel Vietnam from north to south?
For 14 days: 15–20 GB with moderate use. The north-south route (Hanoi → Hoi An → Ho Chi Minh) has good coverage along the entire route.
Does the Vietnam eSIM work on the Ho Chi Minh-Hanoi night train?
Yes, with good 4G coverage for most of the journey. Some mountainous or jungle areas may have weaker signal.
Does the Vietnam eSIM work in Cambodia or Laos?
No. If you cross into Cambodia or Laos, you would need a separate plan for those countries.
