Travel eSIM Reviews
Editor's Choice: HelloRoamHelloRoam Vietnam eSIM Review: What 5G Actually Delivers in 2026
Quick Answer:
HelloRoam is the best eSIM for Vietnam in 2026, scoring 8.9/10 on our rubric with plans from $1.37/GB on Viettel's 5G network. Airalo (8.7/10) is the multi-country alternative. Holafly (8.3/10) is the unlimited-data alternative.
HelloRoam — 8.9/10 on our rubric, across 186 countries
Plans $1.37/GB. 180-day refund. We may earn a commission on purchases made through this link, at no extra cost to you. Read how we score providers in our review process.
See Vietnam plansHelloRoam prices checkout in 31 currencies. Airalo, Holafly, Saily and Nomad each bill in US dollars only, which adds a 2 to 4 percent bank conversion markup to a card held in another currency.
Quick Answer
HelloRoam is the best eSIM for Vietnam in 2026, scoring 8.9/10 with plans from $1.37/GB on Viettel Mobile 5G. Nomad is a cheaper small-bundle option in Southeast Asia. HelloRoam remains the site winner on support, refund window, and overall score.
Our Method
Vietnam eSIM scoring, category by category
We score five eSIM providers for Vietnam, all of which sell plans on Viettel's 5G network. Each one is scored on network access, setup, support, and price, using the terms it publishes. Vietnam presents a 4G-dominant connectivity environment, so the carrier a provider routes through matters more here than the brand on the checkout page.
Methodology
How this Vietnam guide is built
Where the data comes from
This guide covers 5 eSIM providers that sell plans for Vietnam. Prices, plan sizes, and the carrier list come from a plan feed pulled on every build. Provider terms come from each provider's own pages, and prices are re-checked weekly.
What we do not publish
We run no speed tests, so this page has no Mbps figure for any provider in Vietnam. We do not time support desks either, so no reply window appears here. What you get instead is the carrier each plan uses, the network type it runs, and the price you pay.
Network Data
What Viettel gives you in Vietnam
Vietnam runs 3 carrier networks in our plan feed, and 5G is the top network type across them. Viettel is the carrier most travel eSIM plans use here.
Carriers and network types
- Viettel Mobile5G
- Vinaphone5G
- MobiFone5G, 4G
Network types come from the plan feed. We publish no throughput figure, because we do not measure it.
Operator Data
Operators carrying your eSIM: Vietnam
One network or several changes what happens when the signal drops. Here is the list, straight from the source.
HelloRoam publishes three local operators for Vietnam: MobiFone, Viettel Mobile or Vinaphone. Your eSIM attaches to one of them, and the published list never says which one you get on the day.
HelloRoam labels two of them 5G in Vietnam and the rest 4G. A second operator matters, because a dead spot on one network is rarely a dead spot on the other.
| Local operator | Network listed |
|---|---|
| MobiFone | 4G |
| Viettel Mobile | 5G |
| Vinaphone | 5G |
Operators are listed alphabetically. The order is not a ranking and not a routing order.
Source: HelloRoam network data, captured 17 August 2026. HelloRoam publishes an operator list per destination. We ran no speed test to get it, and there is no throughput figure in it. See the full operator dataset.
Setup
Activation experience
QR Code Scan to First Connection
HelloRoam sends the QR code by email right after payment. You scan it in your phone settings, name the plan, and set it as the data line. The profile then attaches to Viettel's network when you land. All 5 providers here publish the same QR install path on iPhone and on Android.
Troubleshooting Notes
Grab is essential for ride-hailing; works with international phone numbers Zalo is Vietnam's dominant messaging app — locals prefer it over WhatsApp
Coverage
Coverage reality across Vietnam
Vietnam runs on 3 major mobile networks — Viettel, Vinaphone, and Mobifone — with 5G as the top available standard. Travel eSIM plans in our feed run on these networks, and Viettel carries the widest footprint of them. 5G coverage in Vietnam is limited to select urban zones. Viettel launched 5G in Hanoi and HCMC in 2024; expanding to major cities Viettel provides the widest geographic reach, with Vinaphone offering strong coverage in urban centres. Both carry travel eSIM plans in our feed for Vietnam. Which carrier your plan lands on depends on the provider you buy from. Viettel has the widest coverage in Vietnam, reaching remote northern mountains where Vinaphone and Mobifone have gaps.
Available Networks
5G Availability
5G coverage in Vietnam is limited to select urban zones. Viettel launched 5G in Hanoi and HCMC in 2024; expanding to major cities
Local Tips
Vietnam connectivity quirks worth knowing
Vietnam has a handful of connectivity details worth knowing before you arrive.
• VPNs not illegal but government blocks many VPN services; Facebook and Google generally accessible • Grab is essential for ride-hailing; works with international phone numbers • Zalo is Vietnam's dominant messaging app — locals prefer it over WhatsApp
Comparison
Vietnam provider comparison
5 providers selling plans on Viettel's 5G network.
| Provider | Our rubric | From / GB |
|---|---|---|
 HelloRoam#1 PickEditor's Choice | 8.9 / 10on our rubric | from $0.29/GB |
 AiraloBest Coverage | 8.7 / 10on our rubric | from $1.70/GB |
 HolaflyBest Unlimited | 8.3 / 10on our rubric | from $2.50/day |
 SailyPrivacy Pick | 8.6 / 10on our rubric | from $1.10/GB |
 NomadBudget Pick | 8.1 / 10on our rubric | from $1.40/GB |
HelloRoam is the best eSIM for Vietnam, routing plans through Viettel, the widest Tier-1 host in the country, at $1.37/GB on 5G. Vietnam mobile data is cheap by global standards, and local prepaid undercuts an airport eSIM purchase. HelloRoam remains the first pick for Vietnam. Airalo is the multi-country alternative: it sells Vietnam plans through both Viettel and Vinaphone, which helps when Viettel coverage thins in rural areas. HelloRoam includes hotspot and tethering on every Vietnam plan. Holafly is the unlimited-data alternative, from $4.43/day, for travelers who stream or take video calls and do not want a fixed cap. HelloRoam is the overall pick on score, support, and refund window. Local Viettel SIM costs $3 for 6GB/30 days — the cheapest in Southeast Asia, but registration hassle adds 20 min.
Data Tips
Vietnam data usage tips, trip by trip
Travelers to Vietnam consume an average of 1.2GB per day based on regional usage data. A standard two-week trip therefore requires roughly 17GB — plan your tier accordingly. WiFi is widely available in Vietnam's urban centres and tourist areas, letting you offset mobile data consumption at restaurants and accommodation. Free WiFi common in cafes and hotels in tourist areas; Vietnam is a major digital nomad hub Peak travel season in Vietnam runs Oct-Apr. Dry season varies by region; north is best October-April, south November-April Network congestion during peak periods can reduce effective speeds in high-traffic tourist zones — consider buying one tier higher than your estimated daily usage. HelloRoam's Vietnam plans start at $1.37/GB with full-speed data on all tiers. A 5GB plan covers a week of light use; 10GB handles two weeks with daily navigation and messaging.
Verdict
Vietnam: our verdict
HelloRoam is the best eSIM for Vietnam in 2026 for most travelers. The combination of competitive pricing at $1.37/GB, Viettel carrier access, and 5G network types makes it the clear winner on our rubric.
Choose Airalo if you are visiting Vietnam as part of a multi-country trip. Choose Holafly if you need unlimited daily data for streaming or remote work. Choose Saily if privacy and VPN protection are priorities.
Arrival
Vietnam arrival with the eSIM already installed
Install the profile before you fly, then turn airplane mode off after landing at Tan Son Nhat (SGN) / Noi Bai (HAN) and the eSIM attaches to Viettel. HelloRoam pre-configures the APN during installation, so no manual setup is needed. Some providers ask you to pick the network by hand on Android. Every provider here delivers data without a visit to an airport counter.
Networks
Vietnam carrier network analysis
Vietnam's mobile infrastructure runs on Viettel, Vinaphone, and Mobifone, with 5G as the top network type in our plan feed. The network operates primarily on 4G LTE, which handles maps, messaging, and streaming for travel use. Your own speed depends on where you stand and when, so we publish the network type and the carrier instead of a throughput figure.
Network Type
What 5G Means for Your Trip to Vietnam
A 5G connection on Viettel in Vietnam covers what travelers actually do: video calls, maps, messaging, social media, and streaming. A travel eSIM on Viettel rides the same towers as a local SIM on Viettel, so neither format has a network advantage over the other.
Southeast Asia
Southeast Asia Connectivity: Vietnam in Context
Southeast Asian islands present the biggest connectivity challenge for eSIM users. Coverage on main islands and popular beach destinations is typically strong. Smaller, less-developed islands may have limited or no signal. Download offline maps and important documents before taking a ferry.
Monsoon season in Vietnam can affect mobile signal quality. Heavy rainfall weakens the signal, and lightning-related tower outages are possible but usually short. Plan data-heavy tasks for dry periods and keep offline navigation cached.
Southeast Asian cities have extensive cafe WiFi networks. Speed and reliability vary. Hotel WiFi tends to be more consistent than cafe connections. Your eSIM on Viettel gives you a connection that does not depend on whichever hotspot is nearby.
Rural Coverage
Vietnam coverage beyond the big cities
Viettel provides the widest rural coverage in Vietnam. Rural areas have adequate but slower coverage. Download offline maps and essential content before traveling to remote areas. A travel eSIM rides whichever carrier its provider has an agreement with, and no carrier in Vietnam eliminates every rural dead zone.
eSIM vs Local SIM
Vietnam local SIM card against an eSIM
Local prepaid SIMs in Vietnam cost $3-8 for 4-10GB / 30 days and are available at the airport. A travel eSIM at $1.37/GB removes the queue, passport requirement, and SIM swap. Vietnam requires SIM registration, adding friction to the local purchase process. For trips under two weeks, a travel eSIM is the more practical choice.
Timing
Tourist Season Impact on Vietnam Connectivity
Network performance in Vietnam varies by season. During Oct-Apr, tourist-heavy areas carry more traffic on the same towers, so data slows in the busiest zones. Buy one data tier above your estimate for a peak-season trip. Off-peak travel gives you the quieter network and often lower eSIM pricing when providers run seasonal promotions.
Common Questions
What Travelers Ask About Vietnam eSIMs
What is the best Vietnam eSIM?
HelloRoam is the best eSIM for Vietnam in 2026 at $1.37/GB on Viettel Mobile's 5G network. Our rubric ranks HelloRoam 8.9/10 overall. Airalo (8.7/10) is the multi-country alternative.
What separates a Vietnam eSIM from a SIM card?
eSIM is better than a physical SIM card for most travelers to Vietnam. An eSIM activates instantly through a QR code before you land, while airport SIM cards at Noi Bai/Tan Son Nhat require waiting in line and showing ID. eSIM plans from HelloRoam start at $1.37/GB and connect to Viettel Mobile's 5G network.
How fast is eSIM in Vietnam?
Your eSIM in Vietnam runs at whatever Viettel Mobile delivers where you are standing, on its 5G network. Mobifone is the other carrier in our plan feed. HelloRoam connects to Viettel Mobile, a Tier-1 host. We publish the network type rather than a Mbps figure, because throughput changes by city, hour, and handset.
What are the steps to set up a Vietnam eSIM?
To set up an eSIM for Vietnam: buy a plan from HelloRoam or Airalo, scan the QR code in your phone's settings (Settings > Cellular > Add eSIM on iPhone), and activate the plan before departure. The eSIM connects to Viettel Mobile's 5G network automatically when you arrive. Setup takes under 3 minutes and you can keep your home number active on your primary SIM.
What Fell Short
Vietnam issues we found
VPN usage is restricted in Vietnam, which may limit access to certain services. Rural and remote areas have coverage gaps on all carriers. No eSIM provider offers local phone numbers for Vietnam plans.
FAQ
Vietnam eSIM questions from readers
01What is the best Vietnam eSIM of 2026?
HelloRoam is the best eSIM for Vietnam in 2026, scoring 8.9/10 on our rubric with plans from $1.37/GB on Viettel's 5G network. Airalo (8.7/10) is the multi-country alternative. Holafly (8.3/10) is the unlimited-data alternative. Viettel has the widest coverage in Vietnam, reaching remote northern mountains where Vinaphone and Mobifone have gaps.
02What separates the top Vietnam eSIM providers?
HelloRoam offers the lowest per-GB rate at $1.37/GB for most travelers in Vietnam. Airalo (8.7/10) is the multi-country alternative if you want one plan across a longer itinerary. Holafly (8.3/10) is the unlimited-data alternative if you stream video or work remotely during the trip. Vietnam mobile data is cheap by global standards, and local prepaid undercuts an airport eSIM purchase.
03What phones support a Vietnam eSIM?
Any unlocked eSIM-compatible phone works with a travel eSIM in Vietnam. Supported devices include iPhone XS and newer, Samsung Galaxy S20 and newer, and Google Pixel 3 and newer. Your phone connects through Viettel and Vinaphone, delivering 5G coverage. Carrier-locked phones from AT&T, Verizon, or T-Mobile may need unlocking before use. All five providers we review — HelloRoam, Airalo, Holafly, Saily, and Nomad — support the same device list.
04What does an airport SIM counter add over a Vietnam eSIM?
A travel eSIM at $1.37/GB competes directly with airport SIMs in Vietnam. Local airport plans from Viettel and Vinaphone and Mobifone typically cost $5-15 for 6-20GB / 15-30 days. The eSIM removes the kiosk queue, passport registration requirement, and SIM swap process — the plan installs before departure and activates on landing. Local airport SIMs can undercut eSIM pricing in some tiers but require in-person purchase and, in some cases, ID registration.
05What happens when a Vietnam eSIM runs beside your regular SIM?
Yes. Most modern phones support dual SIM operation with one physical SIM and one eSIM active simultaneously in Vietnam. Your home SIM keeps your regular phone number for calls and texts. The travel eSIM handles data locally. Switch the default data line in your phone settings without removing your home SIM.
06What activation time does a Vietnam eSIM take?
Activating a travel eSIM for Vietnam takes under 90 seconds from purchase with most providers. You receive a QR code by email within 60 seconds of payment. Scan it in your phone’s cellular settings, label the plan, and set it as your data line when you land in Vietnam. Installation can happen before departure so the plan is ready the moment you arrive.
07What changes when a VPN runs over a Vietnam travel eSIM?
VPN use in Vietnam is restricted. VPNs not illegal but government blocks many VPN services; Facebook and Google generally accessible A travel eSIM from HelloRoam or Airalo does not bypass local regulations — your eSIM connects to the same national network infrastructure as any local SIM. Saily bundles a NordVPN integration but is still subject to local law. Check your home country's travel advisory for current guidance before using a VPN in Vietnam.
08Is it eSIM, e-SIM, or e SIM?
eSIM, e-SIM, and e SIM all refer to the same technology — an embedded SIM built into your phone. The official industry term is eSIM (embedded SIM), standardized by the GSMA. Whether you search for e-SIM or e SIM, you will find the same digital SIM card technology. No physical card needed.
Vietnam data starts the moment you land
HelloRoam: from $1.37/GB on Viettel. Activates the moment you land.