Planning a trip to Vietnam and want to stay connected without roaming fees? Simju is our top pick for 2026; it runs on Vietnamobile 4G and Vinaphone 5G with no speed throttling, so you get full-speed data for the length of your trip.
Your eSIM arrives by email in minutes, works alongside your existing number, and comes with a 30-day money-back guarantee plus 24/7 human support if anything goes wrong. In this guide, we break down Simju's Vietnam plans and pricing against the other top eSIM providers, coverage, and which one actually fits your trip.
Best eSIMs for Vietnam at a Glance
Here's how Simju stacks up against other leading Vietnam eSIM providers in terms of price, network, and 5G availability. Full breakdowns of each are below.
| Provider | Best For | Starting Price | Network | 5G Available? |
|---|---|---|---|---|
| Simju | Full-speed data, no throttling | From $3.00 | Vietnamobile 4G, Vinaphone 5G | Yes |
| Saily | 5G reliability | From $3.99 | 5G (Hanoi, Da Nang tested) | Yes |
| Airalo | Cheapest entry price | From $4.50 | Viettel 4G/LTE | No |
| Holafly | Unlimited data | From $3.90 | Mostly 5G, LTE dips reported | Yes |
| Ubigi | Speed in Asia | From $6.90 | 5G nationwide | Yes |
The Best eSIMs for Vietnam, Reviewed
We've compared the top eSIM providers for Vietnam on price, network, and what you actually get for your money, from full-speed data with no throttling to unlimited plans for heavy streamers. Here's a closer look at each, starting with our top pick.
Simju
Simju is our top pick for Vietnam in 2026. Plans start from $3.00 and run on Vietnamobile 4G and Vinaphone 5G, with no speed reduction; you get full-speed data for the entire length of your plan, not throttled data past a certain point.
Every Simju plan includes:
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Instant QR delivery by email within minutes of checkout
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Keep your number data-only, so WhatsApp, iMessage, and calls on your usual number keep working
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Hotspot sharing for laptops and travel companions
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Top-up available to extend data without buying a new plan
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30-day money-back guarantee on unused eSIMs
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24/7 human support, real people on chat and email
Ready to get connected? See current Simju Vietnam plans and pricing.
It's the strongest all-around pick if full-speed data and responsive support matter more to you than an unlimited plan.
Best for: Travelers who want reliable, full-speed data without a slow support queue.
Saily
Saily, from NordVPN's parent company Nord Security, starts at $3.99 and has been independently tested, holding steady at 5G across Hanoi and Da Nang. One independent speed test measured peak speeds over 260 Mbps in Hanoi during evening peak hours. Plans scale up to unlimited for heavier data users, backed by a brand with a long track record in the security space, though there's no option to add a dedicated phone number.
Best for: Travelers who want dependable 5G without paying for unlimited data they won't use.
Airalo
Airalo is the lowest-cost way in, from $4.50 for a small starter plan on the Viettel 4G/LTE network, Vietnam's most widely covered carrier, including rural routes, even without 5G support. The trade-off is speed: without 5G, peak performance lags behind Simju, Saily, and Holafly.
Best for: Short, light-data trips where coverage matters more than top speed.
Holafly
Holafly offers unlimited-only, uncapped plans starting from $3.90/day, with per-day pricing dropping the longer your trip runs. Coverage is mostly 5G, with occasional LTE dips reported in Da Nang, and there's no smaller, cheaper fixed-data option if you don't need unlimited.
Best for: Long stays or heavy streamers who'd rather not think about a data cap.
Why Choose Simju Over the Alternatives
Price isn't the only thing that matters when you're relying on data abroad. Simju's QR code lands in your inbox within minutes of checkout, no waiting around like with some providers. If something goes wrong, you're talking to a real person 24/7, not a slow ticket queue, and any unused eSIM is refundable within 30 days. Plans also run at full speed with no throttling.
If you're purely chasing the lowest cost per GB, a competitor like Airalo may work out cheaper. But for reliable support and a no-hassle setup, Simju is hard to beat.
Network Coverage: Which Carrier to Pick
Vietnam's mobile coverage runs across four main networks: Viettel, Vinaphone, Mobifone, and Vietnamobile. Viettel has the widest reach nationally, making it a strong choice if your trip takes you into rural areas, mountain routes, or outlying provinces where other carriers thin out. It's the network most travelers fall back on when they need coverage well outside the major cities, even if that breadth sometimes comes at the cost of top-end speed.
Vinaphone and Mobifone, by contrast, both carry strong reputations for 5G speed in Vietnam's major cities, and along the routes most tourists actually travel, think Hanoi, Ho Chi Minh City, Da Nang, and the resort towns in between.
If your trip is mostly city-based, either network should keep up comfortably with maps, video calls, and streaming. Simju's Vietnam eSIM runs on Vietnamobile 4G and Vinaphone 5G, which means you're getting fast, reliable coverage exactly where most travelers spend their time without the throttling; some budget plans apply once you cross a set data threshold.
How to Choose & Get Started
Picking the right plan comes down to two things. First, match your data to your trip length. A short city break needs far less than a two-week trip covering multiple destinations. Second, decide between a fixed data plan and an unlimited option: fixed plans work well if you mainly need maps, messaging, and social media, while unlimited makes more sense if you'll be streaming or tethering heavily.
Getting started with Simju is simple: buy online and your QR code arrives by email within minutes. Install it on your phone any time before you fly your plan only starts once you connect in Vietnam. Not sure your phone supports eSIM? Check your device settings under "Mobile" or "Cellular" for eSIM compatibility before you buy.
FAQs
Does Vietnam have good eSIM coverage?
Yes. Vietnam's major carriers Viettel, Vinaphone, and Mobifone provide strong 4G and 5G coverage across the country's cities and most tourist routes, including Hanoi, Ho Chi Minh City, Da Nang, and popular resort areas. Coverage thins out in remote mountain or rural regions, but for a typical trip you should stay connected throughout.
Can I top up my eSIM?
Yes. Simju eSIMs support top-ups, so if you're running low on data mid-trip, you can add more without buying a whole new plan.
Is 5G available?
Yes. Simju's Vietnam eSIM runs on Vinaphone's 5G network, which has a strong reputation for speed in Vietnam's major cities and tourist routes.
Will my phone number still work?
Yes. Simju eSIMs are data-only, so your physical SIM and home number stay active the whole time. WhatsApp, iMessage, and your usual calls and texts keep working exactly as they do at home. You're just browsing on the Simju connection instead of paying roaming fees.