Vietnam eSIM vs Local SIM: What Travelers Need to Choose Before Landing

Compare SIM formats and published Viettel and MobiFone eSIM packages, including data, local calls, registration and activation timing.

Choose the SIM format your phone supports, then choose a package that covers what you will actually use. An eSIM saves you swapping a card; it does not automatically include a Vietnamese number, calls or SMS. For maps and messaging apps, data may be enough. For ordinary local calls, choose a package with domestic minutes.

Choose the format before the package

• Use eSIM if your exact phone model supports it and is unlocked. You install a digital profile, usually with a QR code. Some providers let you register before arrival; others sell tourist eSIMs at a counter in Vietnam.
• Choose a physical SIM if your phone cannot use eSIM or you want a removable card. Buy from the operator or an authorised seller and complete the required registration. In-person help is also available for eSIM, so needing setup assistance does not mean you must buy a physical card.
• Keep your home number only if you need it. A compatible dual-SIM phone can keep your home line alongside a Vietnamese line, but home-carrier roaming charges can still apply.

On iPhone, Apple says an unlocked device shows “No SIM Restrictions” beside Carrier Lock. Also check the device’s regional version: two phones sold under the same model family can have different SIM support.

Published local-operator eSIM options

These examples give you actual packages to compare, rather than treating every travel eSIM as the same product. Prices and allowances below were checked on the operators’ published pages on 24 October 2026. They are eSIM offers; do not assume that a physical-SIM purchase has the same total cost.

• Viettel 5G60T: 60,000 VND for 7 days, with 5GB per day. Viettel’s tourist guide excludes the SIM cost from that price. This is a data-focused option to ask about for a short stay.
• Viettel 5G80T: 80,000 VND for 15 days, with 5GB per day, also excluding the SIM cost. Get the complete purchase price at the counter before paying.
• MobiFone FR10: 150,000 VND for 10 days, with 50GB and 70 domestic call minutes. This is a top-up package for the tourist eSIM, useful if ordinary local calls matter as well as internet access.
• MobiFone FR30: 250,000 VND for 30 days, with 150GB and 200 domestic call minutes. It is the longer-duration option in MobiFone’s tourist top-up list.

Read the Viettel tourist eSIM package list and MobiFone’s FR10 and FR30 pages for the terms. The listed call minutes do not establish an SMS allowance. Hotspot permissions, speeds after an allowance and coverage along your route also depend on the exact product.

Buying and activating after you land

Viettel’s tourist eSIM guidance lists a passport, an unlocked phone and an eSIM-compatible device as requirements. It directs visitors to Viettel-branded or authorised airport counters and authorised stores. At the counter, specify the package name, ask for the total including SIM issuance, and have the seller explain when validity begins before installing the QR code.

MobiFone has a separate international-tourist eSIM offer with 10GB free for 24 hours after the required registration and activation. Its pre-arrival e-visa channel asks for an email address, passport number and e-visa application number. The airport channel uses QR codes on MobiFone materials and online identity verification.

For MobiFone, install the profile using its QR code and call 900 after arriving in Vietnam. If registration was completed before landing, the full 24-hour package starts with that activation call. If registration is completed after landing, the full package starts when registration is completed and the allowance is provisioned; the provider describes only temporary data access before that step. Keep the registration instructions with your QR code so the first connection does not depend on finding them again.

Set the right data line

Set your Vietnamese or travel line as the phone’s mobile-data line. Check data roaming separately for each line: some travel eSIMs require it to be enabled, while enabling it on your home line can incur charges. Apple’s international eSIM guidance and roaming settings guide explain the iPhone options.

Turning off data roaming on your home line does not make calls or messages on that line free. If you need your usual number for bank messages, confirm the home carrier’s terms before travel. After setup, test mobile data with Wi-Fi switched off; if you bought local minutes, test a local call too.

Which option fits your trip?

For an eSIM-compatible phone and a short data-only trip, compare the Viettel data packages above with other offers using the same validity and allowance. If you need domestic calls, FR10 and FR30 show what a local bundle can include. If your device needs a physical card, take the same requirements—days, data and calls—to an official counter and ask for its physical-SIM quote. Keep the format decision separate from the package decision, and compare the complete price rather than the headline data fee.