Maxis Malaysia

Maxis Malaysia's 7-Days ASEAN Data Pass (RM49, roughly $10) covers Vietnam plus eight other Southeast Asian countries, making it exceptional value for regional travelers. The pass delivers genuinely fast data speeds in Vietnam, and the fixed weekly pricing means you won't face bill shock from overages. The eSIM activates instantly through Maxis' app without requiring you to be in Malaysia.

This is the smart pick for budget-conscious travelers covering multiple countries in one week. The simplicity of the pricing model, no daily limits, no hidden charges, just seven days of unlimited regional roaming, appeals to backpackers and digital nomads. Compared to pay-as-you-go rates in Vietnam, the Maxis pass saves money quickly, especially if you're streaming, video calling, or using maps throughout your trip.