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Vietnam is an easy country to stay connected in. The cities have fast 4G with 5G rolling out, free cafe WiFi is everywhere, and unlike China there's no Great Firewall to plan around — Google, WhatsApp, and Instagram all just work.
This guide is built from pricing, not from a trip. On September 29, 2026 we read the Vietnam page of every eSIM provider we track and recorded what 14 of them actually charge, which Vietnamese network each says it uses, and which plans it still sells. We haven't run speed tests in Sapa or on a Ha Long Bay cruise, and we ranked on price per GB and network, not on which provider pays us more.
Two things stood out. First, prices are higher than Vietnam's cheap-data reputation suggests: a 30-day 10 GB plan from Ubigi, Nomad, Saily, or Airalo costs $12.90 to $18. Second, Viettel — the country's largest carrier — isn't the network behind most travel eSIMs. Airalo, Ubigi, Holafly, and MobiMatter all name Vinaphone (VNPT), Nomad names MobiFone and Vinaphone, and only four of the 14 providers — Breeze, eSIMo, TooSim, and SimOptions — name Viettel.
Our Top 3 eSIM Picks for Vietnam
Ubigi
Ubigi has the cheapest 30-day 10 GB of the 14 providers we checked: 10 GB for $12.90 ($1.29/GB), on Vinaphone (VNPT) — the same network Airalo uses, for $5.10 less. Its 50 GB for $36.90 ($0.74/GB) is the cheapest 50 GB outside the MobiMatter marketplace, and for a short trip it sells 10 GB for 7 days at $10.90. Its 30-day unlimited at $54.90 is second only to Maya's.
Best for: Most Vietnam trips, and anyone who wants the most data per dollar. The honest tradeoffs: Ubigi sells only three fixed sizes (3, 10, and 50 GB), so there's no 5 GB or 20 GB middle ground; its 3 GB plan lasts just 15 days; it names a single network; and its page doesn't state a network speed.
View Ubigi Vietnam Plans→Nomad
Nomad names two Vietnamese networks, MobiFone and Vinaphone, and has the cheapest 30-day 5 GB of any provider we checked: 5 GB for $10. Its 10 GB for $17 is the cheapest 30-day 10 GB from a provider that names more than one network, and 50 GB for $39 ($0.78/GB) is only $2.10 more than Ubigi's. A week-long 1 GB costs $4.
Best for: Travelers leaning on cafe WiFi who only need a few gigabytes. The tradeoffs: Nomad's plans are 4G only and top out at 30 days; there's no 20 GB tier; the $17 10 GB is a sale price (listed at $19); and unlimited comes only in 5- and 10-day lengths ($18 and $33) on MobiFone 4G plus Vietnamobile 3G.
View Nomad Vietnam Plans→Maya
If you want unlimited data, Maya is the cheapest way to get it in Vietnam at every length it sells: 3 days for $9.99, 7 days for $19.99, 14 days for $27.99, and 30 days for $49.99 — against $54.90 from Ubigi, $69 from Airalo, and $73.90 from Holafly for the same month. The same eSIM also covers 165 other countries, which helps on a wider Southeast Asia trip.
Best for: Remote workers, heavy video callers, and anyone who doesn't want to track usage. The tradeoffs: Maya sells no fixed-data plans, doesn't name a Vietnamese network, and only comes in 3-, 7-, 14-, and 30-day lengths. For most visitors a fixed plan costs less — Ubigi's 50 GB is $13.09 cheaper than Maya's 30-day unlimited.
View Maya Vietnam Plans→Why aren't Airalo or Saily in the top 3?
Because in Vietnam the numbers aren't close enough. Airalo's 30-day 10 GB is $18 and Saily's is $17.99 — within a dollar of Nomad's $17, but $5.10 and $5.09 more than Ubigi. Among those three, Nomad is the cheapest at 5 GB and 10 GB, names two networks, and adds a 50 GB tier Saily doesn't sell. Airalo is still a good choice if you want flexible lengths: it sells 10 GB for 7, 15, or 30 days ($17, $17.50, $18), 3-day plans, and 50 GB for $49, and it lists 5G. Saily doesn't say which Vietnamese network it uses; its unlimited plans run at full speed for 5 GB a day, then slow to 1 Mbps.
Provider Comparison
Here's how the major eSIM providers stack up for Vietnam. Every price and network here was read directly off the provider's own Vietnam page in September 2026; prices change often, so check the live comparison before you buy:
The same 10 GB, ten different prices
10 GB over 30 days is the plan most Vietnam visitors actually want, so it's the cleanest way to compare providers side by side:
Ubigi leads by almost $4. GigSky's $16.79 is its list price (a promotion cut it to $14.27 when we checked), but it doesn't name a network and doesn't sell anything bigger than 10 GB. Of the providers that name Viettel, eSIMo is the cheapest at $19.90 (it also names MobiFone and Vietnamobile, and doesn't publish a validity period, so confirm it before buying), Breeze charges $22.49, and TooSim $29.99. For a trip of a week or less, SimOptions sells 10 GB for 7 days at $8.50 on Viettel and Vinaphone, and the MobiMatter marketplace lists a Vietnam-only 10 GB for 15 days at $6.99 on Vinaphone from a third-party seller, if you're comfortable with a lesser-known brand.
What about Holafly?
Holafly sells unlimited data only, on Vinaphone (VNPT), at the same prices it charges in Turkey, Greece, and the UK: $27.50 for 7 days, $50.50 for 15 days, and $73.90 for 30 days. That's $23.91 more than Maya and $19 more than Ubigi for the same month, and it isn't the cheapest unlimited plan at any length we checked — even its 1-day plan ($3.90) is undercut by GigSky ($3.49).
Which plan should you choose?
For a 1–2 week trip leaning on Vietnam's plentiful cafe WiFi, 5 GB is enough, and $10 from Nomad is the best price — with more options on our full Vietnam comparison. Want more headroom? Ubigi's 10 GB is only $2.90 more at $12.90. Need 20 GB? Yesim's $26.40 is the cheapest 30-day 20 GB outside MobiMatter, though it shows that as a discount off a $60 list price and doesn't name a network, so confirm the price at checkout. Working remotely? Ubigi's 50 GB for $36.90 beats every 30-day unlimited plan on price. And if you want no limits at all, Maya's unlimited is $19.99 for a week.
Coverage & Network in Vietnam
Vietnam runs on three main carriers, plus the smaller Vietnamobile. Which one your eSIM rides on barely matters in the cities — it's once you head into the mountains and the delta that the differences can show up:
Viettel
The country's largest carrier (and a military-owned enterprise), generally regarded as having the deepest rural reach. But none of our top three picks name it. Only four of the 14 providers we checked name Viettel: Breeze, eSIMo, TooSim, and SimOptions. If Viettel matters to you, eSIMo has the cheapest 10 GB of the four at $19.90 (it doesn't publish a validity period).
Vinaphone (VNPT)
The mobile arm of state-owned VNPT, strong in the cities and tourist areas — Hanoi, Ho Chi Minh City, Da Nang, and Hoi An. It's the network travel eSIMs name most often in Vietnam: Airalo, Ubigi, Holafly, and MobiMatter list it alone, Nomad pairs it with MobiFone, and SimOptions pairs it with Viettel.
MobiFone
The third of the big three, competitive in urban areas and along the coast. Nomad names it alongside Vinaphone, and aloSIM names it as its only network. Nomad's unlimited plans ride MobiFone 4G plus Vietnamobile 3G. 5G from the big three is rolling out, live first in Hanoi and Ho Chi Minh City.
Ha Long Bay, Sapa & the remote north
Ha Long Bay has 4G along the main cruise routes, weakening around far-flung islands and inside caves. Sapa, Ha Giang, and Ninh Binh have usable 4G in town. The genuine dead zones are deep in national parks and the high mountains near the Laotian and Chinese borders — rare territory for most itineraries. We haven't tested coverage there ourselves, so download offline maps before you go.
Bottom line: in Hanoi, Saigon, Da Nang, Hoi An, and along the coast, any provider here should perform well. For the northern loops and rural detours, a plan that names more than one network — Nomad (MobiFone and Vinaphone) or a Viettel-based option like eSIMo or SimOptions — gives you more to fall back on.
How to Set Up Your eSIM for Vietnam
Setup takes about five minutes, and the smart move is to do it before you fly — that way your data is live the moment you land:
Buy your plan before you go
Choose a provider and Vietnam plan through their app or website at home. You'll get a QR code or a direct install link. Buying ahead means you skip the airport SIM kiosk entirely.
Install the eSIM profile
On iPhone: Settings → Cellular → Add eSIM. On Android: Settings → Network → SIMs → Add eSIM. Scan the QR code over your home WiFi — installing isn't the same as activating, so it won't burn data yet.
Set it to activate on arrival
Most plans let you start the clock when you first connect in Vietnam. Keep your home SIM as the primary line for calls and SMS codes, and set the Vietnam eSIM as your data line.
Land and turn off airplane mode
When you arrive at Tan Son Nhat (SGN) in Saigon, Noi Bai (HAN) in Hanoi, or Da Nang (DAD), switch off airplane mode. Your eSIM connects automatically — open Grab and you're ready to ride into the city.
Need more detail? Read our step-by-step setup guide for iPhone, Samsung & Pixel →
Staying Connected in Vietnam: Practical Tips
Grab Is Essential — Install It First
Grab (ride-hailing and GrabFood) is indispensable in Vietnam. Metered taxis are notorious for overcharging tourists, but Grab gives you fixed up-front pricing, GPS tracking, and cashless payment for both cars and motorbike taxis. Reliable eSIM data means you can summon a ride anywhere, anytime — a genuine safety and convenience win. Set it up and add a card before you arrive.
Cafe WiFi Is Everywhere — and It's Fast
Vietnam has one of the best cafe-WiFi cultures in the world. Nearly every coffee shop, restaurant, and hotel offers free, fast, unfiltered WiFi — and Vietnamese coffee culture means you're rarely far from a cafe. That's why you can get away with a smaller eSIM plan here than in a country where you live on cellular data.
No Great Firewall — but Keep a VPN Handy
Unlike China, Vietnam lets Google, WhatsApp, Instagram, and Facebook run normally, so you don't need a VPN to stay connected. Facebook has occasionally been throttled during politically sensitive moments, and a few sites are blocked, so some travelers keep a VPN installed as a fallback — but day to day, you won't reach for it.
Use Google Maps' Motorbike Mode
Renting a motorbike is half the fun of Vietnam, and Google Maps has a dedicated motorbike-routing mode that avoids highways and finds the small roads. Mount your phone, keep your eSIM data active, and you've got turn-by-turn navigation from the Hai Van Pass to the Ha Giang Loop.
Carry Cash — Vietnam Isn't Cashless Yet
Don't expect China-style QR payments everywhere. Vietnam still runs largely on cash — street food, markets, and small shops want Vietnamese dong, even as Grab and cards grow in the cities. ATMs are plentiful; your eSIM's value here is navigation, Grab, and translation, not tap-to-pay.
Keep Your Home Number Active
With dual SIM, your eSIM handles data while your home SIM stays on for SMS verification codes — handy for banking apps and airline check-ins. Turn off data roaming on the home SIM to avoid surprise charges, and let the Vietnam eSIM carry all your data.
Frequently Asked Questions
Which eSIM is best for Vietnam?
On price, Ubigi: 10 GB for 30 days is $12.90, the cheapest 30-day 10 GB of the 14 providers we checked, and its 50 GB is $36.90. It runs on Vinaphone (VNPT). Nomad is the pick for light users — 5 GB for 30 days at $10 — and names two networks, MobiFone and Vinaphone. If you want unlimited data, Maya is the cheapest at every length it sells, from $9.99 for 3 days to $49.99 for 30. Airalo ($18 for 10 GB) and Saily ($17.99) are within $1 of Nomad's $17 but cost about $5 more than Ubigi.
How much do Vietnam eSIM plans cost?
Less than Western Europe, but more than Vietnam's reputation for dirt-cheap data suggests. A 30-day 5 GB plan costs $10 to $11 from Nomad, GigSky, Saily, and Airalo. A 30-day 10 GB plan runs from $12.90 (Ubigi) to $18 (Airalo) at the best-known providers, and up to $29.99 at TooSim. Unlimited starts at $49.99 for 30 days (Maya). Cheaper listings exist if you're flexible on validity or brand: SimOptions sells 10 GB for 7 days at $8.50, and the MobiMatter marketplace lists a 15-day 10 GB for $6.99 from a third-party seller.
Will my eSIM work in Ha Long Bay and Sapa?
Generally yes, in and around the places travelers go. Ha Long Bay has 4G along the main cruise routes, though the signal can weaken around remote islands and inside caves, and Sapa, Ha Giang, and Ninh Binh have usable 4G in town. The genuine dead zones are deep in national parks and the high mountains near the Laotian and Chinese borders. We haven't tested coverage there ourselves, so download offline maps before heading north. Viettel is generally regarded as having the deepest rural reach; if that matters to you, Breeze, eSIMo, TooSim, and SimOptions are the providers that name it.
Do I need a VPN in Vietnam?
No — Vietnam is not China. Google, Gmail, WhatsApp, Instagram, Facebook, and YouTube all work normally on a Vietnamese network, so you don't need a VPN to stay connected the way you would behind China's Great Firewall. Facebook has occasionally been throttled during politically sensitive periods, and a handful of sites are blocked, so some travelers keep a VPN installed as a just-in-case — but for everyday use you won't need one.
Should I get a physical SIM or an eSIM in Vietnam?
An eSIM is more convenient. Physical SIMs at Vietnamese airports are genuinely cheap, but you'll queue at a kiosk, hand over your passport, and deal with a language barrier. An eSIM lets you activate before you land at Tan Son Nhat (Saigon) or Noi Bai (Hanoi), keep your home number active for SMS codes, and skip the kiosk entirely. For trips of a few weeks, the price premium over a local SIM is usually worth the time saved.
Will Google Maps and Grab work in Vietnam?
Both work excellently. Google Maps has accurate Vietnamese data, including a dedicated motorbike-routing mode that avoids highways. Grab — the region's ride-hailing and food-delivery app — is essential in Vietnam, since metered taxis are unreliable for tourists. With a working eSIM you can summon a fixed-price Grab ride or order GrabFood anywhere, which is a real safety and convenience advantage over hunting for a taxi.
How much data do I need for a trip to Vietnam?
Less than you'd need in China, because Vietnam has a genuine cafe-WiFi culture — fast, free WiFi is everywhere, from corner coffee shops to hotels, and it isn't filtered. For a 1–2 week trip leaning on that WiFi, 5–10 GB is plenty for maps, Grab, and messaging: 5 GB is $10 from Nomad and 10 GB is $12.90 from Ubigi, both for 30 days. If you'll work remotely or skip WiFi entirely, Ubigi's 50 GB at $36.90 costs less than any 30-day unlimited plan.
Can I use my Vietnam eSIM in Cambodia, Laos, or Thailand too?
A Vietnam-only plan won't roam into neighboring countries, but most major providers also sell a regional "Southeast Asia" or "Asia" eSIM that covers Vietnam alongside Cambodia, Laos, Thailand, and more on a single plan. If your itinerary crosses borders — an overland trip through Indochina, say — a regional plan is simpler than buying a separate eSIM for each country. Maya's unlimited eSIM also works in 165 other countries, so check its country list against your route.
Ready to Get Connected in Vietnam?
Compare every Vietnam eSIM plan from all major providers — prices, data amounts, and coverage side by side.
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