Mobile coverage in Vietnam
3 carriers support Roamgo eSIMs in Vietnam. Tap any operator below to see their official coverage map.
Vietnamese SIMs are sold at convenience stores but require passport registration with a Vietnamese-only flow — fine if you've got time, frustrating after a Tan Son Nhat arrival. An eSIM skips it: you're on Grab and Google Maps the moment your phone wakes up.
Networks: Roams onto Viettel, Vinaphone, and MobiFone. Viettel has the strongest signal in remote northern mountain areas (Sapa, Ha Giang) and central highlands; Vinaphone tends to be fastest in Saigon and Hanoi.
Carriers in Vietnam
Each link opens the operator's own coverage map in a new tab — the most authoritative source for what's actually live in your destination.
- View coverage mapMapViettel2G3G4G5G
- View coverage mapMapVinaphone
- View coverage mapMapMobifone2G3G4G5G
Coverage maps are maintained by each operator and reflect their current network footprint. Your Roamgo eSIM roams onto these networks automatically — no manual selection required.
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