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Limestone karsts at Ha Long Bay, Vietnam

Vietnam

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Frequently asked questions

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When should I install my eSIM?

Install before you fly — the eSIM stays dormant until you arrive. Most plans give you a 365-day window to install.

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How do I use my eSIM?

At your destination, enable the eSIM line in Settings and set it as Cellular Data. Your home SIM keeps calls and texts.

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Can I reuse my eSIM?

Most eSIMs can be topped up so you don't need to buy a new one. Available top-ups show on the My eSIMs page after purchase.

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How do I top up my eSIM?

Open My eSIMs in your dashboard, find the eSIM, tap Top up. New data is added to the existing eSIM — no reinstall.

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About Vietnam travel eSIMs · 关于越南上网卡

8 Vietnam eSIM plans, $9.00 to $78.00 USD · 越南上网卡 8 款,$9.00

A Vietnam travel eSIM has data ready across Hanoi, Da Nang and Ho Chi Minh City the moment you land — ride-hailing, maps through the old-quarter maze, and translation on demand.

Scan the QR before you fly for instant activation. Fixed prepaid pricing with no roaming bill, and tethering for your other devices.

越南旅行上网卡让你在河内、岘港和胡志明市一落地就有数据——打车、在老城区导航、随时翻译。

出发前扫码,即时启用。固定预付价格、没有漫游账单,支持热点共享其他设备。

    Vietnam Travel eSIM · 越南 上网卡 · Travel Data Card | SinoConnection 华人通