eSIM for Vietnam: The Complete 2026 Travel Guide

Vietnam is a long trip on a phone: Grab bikes through Hanoi's Old Quarter, a sleeper train to Da Nang, a tailor in Hoi An who messages you the fitting time, the boat schedule at Ha Long Bay, and a translation app for everything else. A Vietnam eSIM means all of it works from the moment you land at Hanoi, Da Nang or Ho Chi Minh City — for less than a bowl of pho a day.

Does an eSIM work in Vietnam?

Yes, and better than people expect. Vietnam's three big networks — Viettel, Mobifone and Vinaphone — cover the whole length of the country, and a Vietnam eSIM from AirPlans connects to them at up to 5G in Hanoi, Ho Chi Minh City and Da Nang, with dependable 4G/LTE in Hoi An, Hue, Nha Trang, Da Lat and along the coast. In Sapa's terraces, the Ha Giang loop and the deeper Mekong channels the signal comes and goes — as it does for local SIMs too.

One thing to check before you buy: some Vietnam plans route their internet traffic through a nearby hub rather than exiting in Vietnam itself. That is normal for travel eSIMs and rarely matters — but if a plan does it, its product page says so, so read that line if you rely on location-based apps.

Your phone needs eSIM support: every iPhone from XS/XR up, recent Samsung Galaxy S and Z, Pixel 3 and newer, and most flagship Androids. The compatibility list has the full run-down.

How much data do you need in Vietnam?

Vietnam trips are longer and more phone-dependent than most — navigation on a motorbike, Grab for every ride, translation at every meal — while hostel and homestay Wi-Fi varies. Budget 1–1.5 GB per day:

• One city (4–5 days): 5 GB.
• Two weeks north to south: 15–20 GB. Long transit days with maps running, and photos everywhere.
• A month, or working remotely from Da Nang: an unlimited plan — Vietnam unlimited plans give a daily high-speed allowance and slow down after it rather than cutting off.

Which Vietnam eSIM plan should you pick?

AirPlans lists more than thirty Vietnam plans, from 1 day to 180 days, starting from about $3, including a few data + calls plans with minutes for hotels and drivers. Live prices are on the Vietnam eSIM page and update in real time — what you see is what you pay. Before you choose:

• Validity starts when you connect in Vietnam, not when you buy. Install at home; it waits.
• Top-up is available on most Vietnam plans from your account — useful on a trip that gets longer, as Vietnam trips do.
• Continuing to Thailand, Cambodia or Laos? A regional Asia eSIM can cover the whole route; check its coverage list on the product page and compare against separate country plans.

Set it up before you fly

• Buy the plan. The QR code arrives by email at once and sits in your AirPlans account under My eSIMs.
• Scan it from the phone's settings (iPhone: Settings → Cellular → Add eSIM; Android: Settings → Network & Internet → SIMs → Add eSIM). Name the line "Vietnam".
• Keep the new line off until you land.
• On landing: switch the Vietnam line on, set it as Mobile Data, enable Data Roaming for that line only. Home SIM stays on for calls and SMS with its own data roaming off.

Screenshots for every phone are in the installation guide. About two minutes.

Local tips

• Grab: the app for bikes, cars and food across Vietnam. Install it and add a card before you land; it needs data at the pickup point.
• Motorbike routes: the Hai Van Pass has signal on the road; the Ha Giang loop does not in the valleys. Download offline maps of the loop before setting off.
• Ha Long Bay: coverage at the harbour and on most cruise routes, fading in the far channels — download the boat's schedule first.
• Sleeper trains: the Reunification Express has patchy signal between cities; load what you need at the station.
• Hotspot: tethering is allowed, so one eSIM can serve a laptop or a companion's phone.

Your own number stays yours

The eSIM is a second, data-only line next to your regular SIM. Your number and WhatsApp are untouched — here is how that works.

Ready for Vietnam?

Choose a plan on the Vietnam eSIM page, install it before you leave, and switch it on when you land. Support is around the clock, in English and Hebrew.