Best eSIM for Vietnam in 2026
Vietnam has cheap, fast mobile data. Compare eSIM plans for Hanoi, Ho Chi Minh City, and Ha Long, with real prices per GB and how much to buy.
Vietnam is a value destination for data
In the June 2, 2026 catalog snapshot, example plans were about $2.85 for 5 GB and $7.34 for 20 GB; one short-validity example listed 30 GB for about $4.93 over 5 days. These figures are dated and may not match checkout. Compare the stored catalog on the Vietnam eSIM page.
That puts Vietnam in the same value tier as Thailand. If you are deciding between the two, or doing both, our Thailand eSIM guide uses the same approach.
Network and coverage
Vietnam's main carriers include Viettel, VinaPhone, and MobiFone. Coverage depends on the host network and location. Major cities commonly have mobile service, while mountain roads, boats, and remote highlands can lose signal. Confirm the host network on the exact product instead of assuming that every travel eSIM uses the same carrier.
Remote spots, deep in the Ha Giang loop, on boats in Ha Long Bay, or in the far highlands, will drop signal, so download offline maps for those legs.
How much data to buy
Navigation, ride-hailing, messaging, photo uploads, video, and hotspot use create very different data needs. Review your phone's recent mobile-data usage, add a modest buffer, and use the data calculator to compare realistic allowances. A larger bundle is useful only if you are likely to use it before the validity period ends.
eSIM vs a local SIM
A local physical SIM may cost less for a long stay, while an eSIM can be installed before arrival. Registration and seller requirements vary. Compare the current total price and allowance rather than assuming a fixed eSIM premium.
What to check before buying
Validity that covers your trip, hotspot support if you tether, and whether the plan throttles after a daily cap. For multi-country Southeast Asia trips, check the Asia region page for plans spanning Vietnam, Thailand, and neighbors.
Bottom line
Vietnam can have competitively priced eSIM options, but this article uses a dated snapshot. Verify host network, validity, hotspot, fair-use terms, and final price.
Frequently asked questions
How much does a Vietnam eSIM cost?+
In the June 2, 2026 snapshot, examples were about $2.85 for 5 GB and $7.34 for 20 GB; one five-day example listed 30 GB for about $4.93. Verify the current allowance and checkout price.
Is eSIM coverage good across Vietnam?+
Coverage depends on the plan's host network and location. Major cities commonly have service, while mountain roads, boats and remote highlands can lose signal. Confirm the host carrier and download offline maps.
How much data do I need in Vietnam?+
Five to 10 GB can be a starting range for a week with WiFi, maps and messaging. Streaming, uploads and hotspot use can require more. Use your own app habits rather than a universal daily figure.