🇻🇳Asia
eSIM for Vietnam —
your travel data, sorted in 60 seconds.
Hanoi street food crawls, an overnight train to Da Nang, a motorbike loop through the Central Highlands — Vietnam moves fast and the apps you're using move with it.
Plans for Vietnam
Live prices in the app — open eSimphony and tap Vietnam, or ask Moza for any amount.
| Data | Validity | Network | Best for |
|---|---|---|---|
| 1–5 GBA long weekend to a week, light use | 60 days | 4G/5G | A long weekend to a week, light use |
| 6–20 GBOne to three weeks: maps, social, some video | 60 days | 4G/5G | One to three weeks: maps, social, some video |
| 21–50 GBHeavy use: hotspot, lots of streaming | 60 days | 4G/5G | Heavy use: hotspot, lots of streaming |
| 51–100 GBLong trips | 120 days | 4G/5G | Long trips |
| 101–1,000 GBVery long trips, very heavy use | 180 days | 4G/5G | Very long trips, very heavy use |
Any whole number of GB. Validity starts when you buy — Moza in the app shows the exact amount, validity and price.
Why eSimphony for Vietnam
Tested at home. The eSimphony team operates in Vietnam — coverage in Hanoi, HCMC, Da Nang, Hoi An, Phu Quoc, Ha Long, Sapa, and the Mekong Delta is part of our daily QA, not a checkmark on a coverage map.
Viettel + Vinaphone + MobiFone, the right one for the moment. Plans roam to whichever local carrier has the strongest signal. Viettel reaches deepest into rural and mountain areas — the Northern Loop, the Hai Van Pass, the Highlands.
No tourist-SIM ritual at the airport. The Noi Bai and Tan Son Nhat SIM kiosks are slow, paperwork-heavy, and won't give you the best plan for your trip. eSimphony installs in the app before you fly.
Moza speaks Vietnamese, English, and beyond. Ask her in Vietnamese, English, French, or whatever — she'll recommend a plan and answer coverage questions about specific routes.
Coverage and networks
Networks: Viettel, Vinaphone, MobiFone
Vietnam's mobile coverage has gotten remarkably good. Hanoi, HCMC, Da Nang, Hoi An, Hue, Nha Trang, and the major coastal cities are blanketed with 4G LTE; 5G is live in Hanoi, HCMC, and Da Nang. The Hanoi-to-HCMC north–south coastal corridor is well-covered. The Northern Loop (Ha Giang, Cao Bang, Bac Ha) is mostly covered — Viettel is strongest here. Sapa has signal in town and at the popular trekking trailheads. Phong Nha caves: signal at the visitor centers, none inside the caves. Ha Long Bay: signal on most overnight cruise routes, weaker in the deeper karst clusters.
How to install your eSIM for Vietnam
- 1. Download the eSimphony app for iPhone or Android.
- 2. Open the app and create your account.
- 3. Tap Vietnam (or ask Moza for a recommendation).
- 4. Pick a plan and pay.
- 5. Done. Your phone is on a local network in seconds.
If you've used eSimphony before, skip the install — your lifetime eSIM is already on your phone.
Vietnam travel data tips
- Grab is essential. Grab is the dominant ride-hailing and food-delivery app in Vietnam — needs data-on.
- Restaurants are increasingly Zalo-first. Zalo is Vietnam's WhatsApp; many restaurants, tour operators, and small businesses use Zalo as their primary contact channel.
- Cash is still king for street food. Card terminals are common but unreliable. Pre-load some cash and trust ATMs.
- The Hanoi → HCMC coastal route is well-covered. Sleeper bus, Reunification Express train, motorbike — the coastal route has continuous 4G across most of the journey.
- Plug type A/C, 220 V. Vietnam uses both two-prong flat (US-style A) and round-pin (European-style C) plugs in the same outlets.
- Heading to Thailand, Malaysia, Singapore, or the Philippines after? An Asia Regional plan covers Vietnam and all four in one plan (not Cambodia or Laos).
Frequently asked questions
Will my eSimphony plan work in Hanoi's Old Quarter?+
Yes — the Old Quarter has dense 4G/5G coverage on all major networks. Some old buildings with thick walls weaken in-room signal, but you'll have full bars on the street.
Does the eSIM work on the overnight train to Sapa or Da Nang?+
Mostly. The coastal Reunification Express has near-continuous 4G with brief tunnel gaps. The northern train to Sapa drops in mountain stretches and re-anchors. The eSIM auto-recovers.
How much data for a 10-day Vietnam trip?+
Maps, Grab, Zalo, photos, occasional video — 5–7 GB is comfortable. Heavy hotspotting or video calls — go for 20 GB or more.
Will I have signal in Ha Long Bay?+
On most overnight cruise routes, yes. Some deeper karst clusters and remote anchorages drop briefly. Most cruise boats also have weak Wi-Fi as a backup.
Can I motorbike the Hai Van Pass / Northern Loop and stay connected?+
Mostly. Hai Van Pass has signal on Viettel for almost the entire route. The Northern Loop has signal in towns and on most roads — some pass-top sections drop briefly. Download offline maps as a backup.
What about Phu Quoc?+
Phu Quoc has good coverage in Duong Dong and along the western beach hotels. Some inland and southern beach stretches are weaker. The international airport has full 4G/5G.
Does my eSimphony eSIM expire?+
No. The eSIM profile itself is for life — it stays installed on your phone. Individual data plans have their own validity, shown when you buy, but the underlying eSIM doesn't expire. When your next trip comes, just buy a new plan in the app.
Will an eSIM work on my phone?+
Most iPhones from XS onward, most Pixels from 3 onward, and most flagship Samsung Galaxy phones from the S20 onward support eSIM. You also need an unlocked phone. Open the eSimphony app — it detects your device automatically.
Can I keep my regular phone number while using eSimphony?+
Yes. eSimphony runs on a separate eSIM profile, so your primary number stays active on your main SIM. Calls and texts continue as normal, with eSimphony data running alongside.
Heading somewhere else nearby?
Or get a regional plan for the whole trip: Asia regional eSIM
Land in Vietnam connected.
