Vietnam has been one of the most popular Asia destinations for years, with a clear backpacker and digital-nomad focus. Unlike Thailand or Bali, you need relatively a lot of data volume in Vietnam: Grab rides, GrabFood orders, constant Maps for hostel hunting, live translator for Vietnamese menus — that adds up. A travel eSIM is available right after landing in Hanoi, HCMC or Da Nang, with no passport theater at the airport SIM counter.
Viettel, Vinaphone, Mobifone, Vietnamobile — who's who?
Vietnam has four national mobile carriers. Which network your travel eSIM uses depends on the provider — most travel eSIMs pick Viettel, because that's where rural coverage and 5G reach are best:
| Network | Market share | Strength | 5G coverage |
|---|---|---|---|
| Viettel | ~50% | Best rural coverage, dominant in Sapa, Ha Giang, Mekong Delta | Hanoi, HCMC, Da Nang, Hai Phong, Can Tho |
| Vinaphone (VNPT) | ~25% | On par in Hanoi and HCMC, often the cheapest roaming partner | Hanoi, HCMC, Da Nang |
| Mobifone | ~20% | In Saigon Downtown sometimes faster than Viettel, weaker in the north | Hanoi, HCMC (limited) |
| Vietnamobile | ~5% | Fourth provider, mainly big cities. Irrelevant for travel eSIMs | No 5G |
Viettel — the market leader
Viettel is by far the largest provider and belongs to the Vietnamese army (military-owned telecom company). Its biggest strength: rural coverage. Anyone hiking in Sapa, taking a bus through Ha Giang or staying overnight on a houseboat in the Mekong Delta has the most reliable reception with Viettel. International travel eSIMs like Airalo, Saily and Simbye usually route via Viettel.
Vinaphone — the city pick
Vinaphone (subsidiary of VNPT, the former state monopoly) is often the fastest network in Hanoi and Ho Chi Minh City with the densest 5G coverage in the tourist districts. Holafly and some MobiMatter plans use Vinaphone as the roaming partner.
Mobifone — the Saigon specialty
Mobifone is third largest and competitive with Viettel and Vinaphone in southern Vietnam (Saigon, Mekong Delta). Weaker in the north (Hanoi, Sapa). Travel eSIMs rarely use Mobifone as the primary roaming partner.
Vietnamobile — the small one
Vietnamobile is fourth with about 5% market share, primarily active in big cities. Has no 5G and isn't used by travel eSIMs as a roaming partner — mentioned for completeness.
Current plans for Vietnam
From our current provider database — sorted by price per gigabyte:
| Provider | Data | Validity | Price | €/GB | 5G | |
|---|---|---|---|---|---|---|
Best €/GB | 3000 GB | 30 days | 35,75 € | 0,01 € | ✓ | Visit deal → |
| 2500 GB | 25 days | 29,95 € | 0,01 €+1 % | ✓ | Visit deal → |
| 2000 GB | 20 days | 24,13 € | 0,01 €+1 % | ✓ | Visit deal → |
| 1500 GB | 15 days | 18,34 € | 0,01 €+3 % | ✓ | Visit deal → |
| 1000 GB | 10 days | 12,99 € | 0,01 €+9 % | ✓ | Visit deal → |
| 900 GB | 9 days | 11,87 € | 0,01 €+11 % | ✓ | Visit deal → |
| 800 GB | 8 days | 10,68 € | 0,01 €+12 % | ✓ | Visit deal → |
| 700 GB | 7 days | 9,36 € | 0,01 €+12 % | ✓ | Visit deal → |
| 600 GB | 6 days | 8,18 € | 0,01 €+14 % | ✓ | Visit deal → |
| 500 GB | 5 days | 7,18 € | 0,01 €+21 % | ✓ | Visit deal → |
Hanoi, Halong, Hoi An, Mekong — coverage differences
Hanoi (Old Quarter, West Lake, Tay Ho): Seamless 4G coverage, in Hoan Kiem and Ba Dinh districts continuous 5G. In the Old Quarter, Maps + live tracking for cyclo rides and street-food tours work great too.
Halong Bay / Cat Ba / Lan Ha Bay: 4G stable at moorings and in Cat Ba town. On overnight cruise boats in central bays (Halong, Bai Tu Long) there's reception, occasional dead spots in remote mangrove bays. For live stories of the sunrise it's usually enough.
Sapa & mountain region (Lao Cai, Y Ty, Ha Giang): 4G continuous in Sapa town and the main villages (Cat Cat, Ta Phin), thinner on treks through the rice terraces. Fansipan summit (3,143 m): reception assured up to the cable-car station, occasional at the peak. Ha Giang Loop (motorbike tour): stable on main routes, dead spots at mountain saddles.
Hoi An / Da Nang / My Khe Beach: 4G/5G throughout the old town of Hoi An and along the entire My Khe Beach promenade. Ba Na Hills (Golden Bridge): well covered on the mountain peak, fluctuating in the cable car. Marble Mountains: in the caves, logically no reception.
Hue (Imperial City, Perfume River): Complete tourist coverage, also on dragon-boat tours on the Perfume River. Tomb tours (Tu Duc, Khai Dinh): reception at the entrance areas, partly weaker on the grounds.
Ho Chi Minh City / Saigon (District 1, 2, 7): 5G continuous in the tourist districts — Notre-Dame, Ben Thanh Market, Bui Vien (backpacker street), Saigon Centre Mall. Cu Chi tunnels tour: reception at the entrance complex and in the welcome huts, of course not in the tunnel itself.
Mekong Delta (Can Tho, Ben Tre, My Tho): Good reception on main canals, expected dead spots when boat-hopping through narrow mangrove side canals. Cai Rang floating-market tour at sunrise: 4G in the main market area.
Phu Quoc (Long Beach, Sao Beach, Hon Thom): 4G/5G on the Long Beach hotel strip, Sao Beach (south of the island) slightly weaker, on the Hon Thom cable-car island solid. Dive trips in the An Thoi islands (Hon Thom, Hon Mong Tay): from boat anchor no connection.
Which plan for which Vietnam trip?
| Trip type | Recommendation | Price range |
|---|---|---|
| 1 week Saigon / Hanoi (city trip) | Simbye 3 GB / 15 days | €5–7 |
| 2 weeks classic north–south (Hanoi → Hoi An → HCMC) | Airalo 5 GB / 15 days | €8–10 |
| 3 weeks backpacking incl. Sapa, Halong, Mekong | Airalo 20 GB / 30 days | €22–25 |
| Multi-country (Vietnam + Thailand + Cambodia) | Airalo Asialink 10 GB / 30 days | around €29 |
| Heavy user / streamer / workation | Holafly Unlimited 30 days | around €60 |
| Family with hotspot for the iPad | Simbye 10 GB / 30 days | around €14 |
Common questions about eSIMs in Vietnam
Which Vietnamese network is best?
Viettel is the market leader with the best coverage — including Sapa, Ha Giang and remote Mekong Delta canals. Vinaphone (VNPT) is second largest, on par in Hanoi and Ho Chi Minh City. Mobifone follows closely and is partly faster in Saigon Downtown. Vietnamobile is the fourth provider with a small market share, primarily in big cities. Travel eSIMs (Airalo, Holafly, Saily) usually route via Viettel — the solid default for backpackers who also visit rural regions.
Do WhatsApp, Facebook and Google work in Vietnam?
Yes, all the major apps work. Vietnam doesn't block Western platforms like China — WhatsApp, Facebook, Instagram, Google Maps, YouTube run without problems. Local alternative: Zalo is the Vietnamese WhatsApp clone and more common among locals (for hotel reservations, tour operators, Grab drivers). For tourists, WhatsApp is enough. Travel eSIMs have no special role here — everything runs normally.
Does the eSIM work in Halong Bay, Sapa and Hoi An?
Yes, with regional limitations. Halong Bay (Cat Ba, Lan Ha): 4G stable on the main beaches and in Cat Ba town. On overnight cruises into remote bays (Bai Tu Long Bay) there are occasional dead spots. Sapa & mountain villages: 4G continuous in Sapa town (Viettel), on treks into Cat Cat village or to the Fansipan summit (3,143 m) it gets thinner. Hoi An / Da Nang / My Khe Beach: 4G/5G everywhere in the old town and on the beach. Mekong Delta: reception on main canals, expected dead spots in mangrove side canals. Phu Quoc: good on the Long Beach hotel strip, partly weaker in the south of the island.
How many GB do I need for 3 weeks of Vietnam backpacking?
Vietnam is data hungry — Grab + GrabFood + Booking + Maps + translator + lots of reels = realistically 15–25 GB for 3 weeks. Example: Grab orders 500 MB/day (maps + live tracking), Maps 1 h/day = 70 MB, WhatsApp + Zalo = 30 MB, Insta + reels 1 h = 200 MB → around 900 MB/day. Over 21 days that's 19 GB. If you mainly hang on hostel Wi-Fi: 10 GB are enough. If you stream or hotspot: unlimited. More precisely: data calculator.
What does a travel eSIM for Vietnam cost?
Concrete examples as of Q2 2026: 1 GB / 7 days: from €3–5 (Simbye, Airalo), 5 GB / 15 days: from €7–9, 10 GB / 30 days: from €13–15, 20 GB / 30 days: from €22–25, Unlimited 7 days: around €23 (Holafly), Unlimited 30 days: around €60. A local Viettel tourist SIM (at Hanoi / SGN / DAD airport) costs ~200,000 VND (~€7) for 5–10 GB / 30 days — very cheap, but passport check needed and activation takes 10–20 min.
Local Viettel tourist SIM or travel eSIM?
Vietnam is one of the few countries where the local SIM is actually often cheaper than the travel eSIM (5 GB for €7 locally vs ~€9 as a travel eSIM). The question is more: are you willing to do the passport theater at the airport counter + 10–15 min queue? Advantages of the travel eSIM: active right after landing, no passport drama, German EUR invoice, same plan for all of Southeast Asia (with an Asia regional bundle). On longer stays (3+ weeks) the local SIM is often worth the hassle.
5G in Vietnam — available or not yet?
As of Q2 2026: 5G has been commercially active since October 2024 — Viettel and Vinaphone were the first providers, Mobifone followed. Coverage in Hanoi, Ho Chi Minh City, Da Nang, Hai Phong and Can Tho good, in districts 1–7 of Saigon and the Hanoi Old Quarter continuous. Realistic speeds: 200–400 Mbit/s in 5G cells, otherwise 4G/LTE at 30–80 Mbit/s. For travel eSIMs, 5G has to be in the plan — discount plans only deliver 4G. For tourists: 4G is enough for everything, 5G is a bonus.
What about a multi-country backpacker tour (Vietnam + Thailand + Cambodia)?
Worth picking an Asia regional eSIM instead of single countries. Options: Airalo Asialink (10 GB / 30 days for around €29, covers 14 countries including Vietnam, Thailand, Cambodia, Laos, Indonesia, Singapore etc.), Saily Asia (similar), Holafly Asia. Advantage: one eSIM, one QR code, one booking — no provider switching at the border. Drawback: per-country coverage sometimes a bit worse than pure country eSIMs.
