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Yes. Vietnam's major carriers including Viettel, Mobifone, and Vinaphone support eSIM. GoSIM Vietnam eSIMs work on any eSIM-compatible device including iPhone XS and later, Samsung Galaxy S20+, and Google Pixel 3+.

GoSIM Vietnam plans connect to Viettel, Mobifone, or Vinaphone depending on the plan. Viettel is Vietnam's largest carrier and has the broadest rural coverage — particularly good for travelers heading to Sapa, the northern highlands, or remote coastal areas.

For a 7–14 day trip along the north-to-south trail with typical tourist usage — maps, Grab rides, translation, social media — a 5–10 GB plan is comfortable. Vietnam is one of Southeast Asia's most affordable eSIM destinations, and local carriers offer generous data for the price.

For most travelers, yes. Vietnamese airport SIM counters typically require passport registration and physical SIM installation. A GoSIM eSIM is purchased before departure and activates automatically — no counter, no waiting, no paperwork.

Ha Long Bay: coverage is available on the main boats and near Halong City, but signal diminishes in remote cave areas and on smaller boats. Download offline maps before your cruise. Phu Quoc Island has solid 4G LTE coverage from all major Vietnamese carriers including in the main town and beach resort areas.

Yes. Grab (the regional ride-hailing app) works throughout Vietnam's major cities including Hanoi, Ho Chi Minh City, Da Nang, and Hoi An. Your GoSIM Vietnam data plan keeps Grab and Google Maps running for the entire trip.

GoSIM Vietnam plans range from 1 day to 30 days. Duration begins from first activation when your phone connects to a Vietnamese network — not from purchase date — so buy ahead with no loss.