Three eSIM Vietnam 2026: Promo Code, Data Plans & Prices

Yes. Use our code ESIMSPOTTER when you buy a Vietnam plan on MobiMatter. Enter it at checkout.

The cheapest Three eSIM for Vietnam costs $13.99 and gives you 7 GB for 30 days. It's the regional eSIM, which also works in other countries. We recheck prices daily, so this price is up to date. You can buy it on MobiMatter, the eSIM marketplace that sells Three plans.

Yes, Three works in Vietnam on its regional and global eSIMs. If your eSIM is installed but won't connect after you land, open your phone's settings and turn on data roaming for it. Your home SIM can stay as it is.

On plans that include Vietnam, a 30-day Three plan starts at $13.99 for 7 GB. Three has no 7- or 15-day plan for Vietnam.

No, Three has no unlimited plans for Vietnam, so every plan comes with a set amount of data. Its plans run at full speed with no daily limit.

Three eSIMs are sold through MobiMatter, an eSIM marketplace, with plans covering 99 destinations.

With Three, 1 GB in Vietnam can cost as little as $1.92 on the regional eSIM, which has 12 GB for 30 days.

Yes, every plan from 3 lets you share data through a personal hotspot.

No, the Vietnam plans from 3 are data only, so your home number stays on your main SIM. You can still call and message people through WhatsApp or other apps.

Yes, you can buy it ahead, but install it within 2 months of purchase. The days start counting as soon as you install the eSIM, so install it shortly before your trip.

Yes, you can top up a 3 eSIM in the MobiMatter app or on the MobiMatter site, with no new QR code. A top-up is a new package with its own days, and it doesn't extend the old one.

Yes, Three has 4 regional plans that cover Vietnam and other countries, plus 2 global plans starting at $41.99. These keep you online as you cross borders. Three has no Vietnam-only plan, so each of its eSIMs here also works in other countries.