Best eSIM for 🇻🇳 Vietnam

Viettel is your best bet for an eSIM in Vietnam. Avoid Mobifone if you plan to travel outside major cities.

Which eSIM actually works in Vietnam?

For reliable coverage across Vietnam, Viettel is the undisputed champion. Their network extends well into rural areas and mountainous regions, which is crucial if you're not sticking strictly to Hanoi or Ho Chi Minh City. Mobifone and Vinaphone are decent in urban centres, but their performance drops significantly once you leave the main hubs. If you're heading to Phu Quoc or other islands, Viettel generally holds up better.

What does a decent eSIM plan cost?

You can expect to pay between $7 and $15 for a plan that gives you 5-10 GB of data for 7 to 15 days. Some providers offer unlimited data packages, but these often come with speed caps after a certain threshold, usually around 50 GB. Don't go for anything less than 5 GB; you'll burn through it faster than you think, especially if you use navigation apps or stream anything.

Activation quirks and why your QR code might not work

The biggest activation headache comes with airplane mode. You must turn airplane mode on before scanning the QR code and installing the eSIM. Then, turn airplane mode off. If you do it the other way around, the eSIM installation will fail, and you'll have to contact support. For dual-SIM phones, especially older Chinese variants, ensure your primary SIM is set to data roaming off before activating the eSIM. Also, some QR codes expire after a certain time or number of scans, so try to activate it as soon as you receive it.

The Vietnam-specific eSIM gotcha: Registration

Vietnam has laws requiring registration for SIM cards, and this extends to eSIMs. While most major eSIM providers handle this behind the scenes, it's good to know. If you buy an eSIM directly from a local operator upon arrival, you'll likely need to show your passport for registration. For pre-arrival eSIMs purchased through third-party apps, this is usually managed by the vendor.

Quick eSIM questions for Vietnam

Will my eSIM work with my phone? Most modern smartphones (iPhone XR and newer, Google Pixel 3 and newer, Samsung Galaxy S20 and newer) support eSIM. Check your phone's specifications if you're unsure.

Can I use my eSIM as a hotspot? Yes, most Viettel eSIM plans allow personal hotspot usage. Some plans from other providers might restrict this, so check the terms.

How long does activation take? Installation usually takes less than five minutes once you scan the QR code. The actual connection to the network might take another minute or two.

What happens if my eSIM doesn't work? Contact your eSIM provider immediately. Have your order details and phone model ready. For Viettel, their customer support is usually accessible via their app or website.