Best eSIM for Vietnam: land ready for Hanoi, Hoi An lantern night and the Grab ride.

For travellers who want Vietnamese mobile data on the phone they already own, eSIMbundle is a strong option. Buy a Vietnam bundle before departure, land at Hanoi, Da Nang or Ho Chi Minh City, and use Google Maps, Grab, Google Translate and WhatsApp straight away. A VPN is included with every plan.

In Vietnam, eSIMbundle connects to VinaPhone and Viettel. Your eSIM switches automatically to the fastest available network for the best coverage and speed, so you never need to choose a carrier. All of them support 4G, and 5G is supported on Viettel.

Coverage is generally comfortable across Hanoi, Ho Chi Minh City, Da Nang, Hoi An, Nha Trang, Hue and Phu Quoc. Signal can weaken in mountain passes north of Sapa, in deep Mekong Delta side channels and on offshore day boats around Ha Long Bay.

4G is broadly available across populated Vietnam and 5G is being rolled out across the main city centres. Whether your phone connects on 4G or 5G in a specific spot depends on your device, the available partner network and live local conditions.

Light users on Maps and messaging often manage on 1–3 GB a week. Normal travellers using Grab, translation, streaming and hotel bookings usually want 5–10 GB a week. Heavy video or hotspot users can push past 20 GB a week. Use the Travel Data Calculator to size a Vietnam plan for your trip.

eSIMbundle Vietnam plans are data plans. Use mobile data for WhatsApp, FaceTime and other internet-based calling and messaging. Keep your normal SIM active for calls, SMS and verification messages, subject to your home carrier's roaming charges and support.

Yes. On a compatible dual-SIM phone, keep your normal SIM installed and use your eSIMbundle eSIM for mobile data. Your normal phone number stays with your home SIM, and WhatsApp continues using the number already registered to your account.

Yes. In the eSIMbundle app, open Store or Add data and buy a separate bundle on the same installed profile. Each bundle has its own allowance and validity and may wait before first use. Eligible finite bundles offer saved-card auto top-up at 80% used, up to your approved package price. Manage it under Account → Auto top-up; check existing replacement orders before buying again.

Yes. Open the eSIMbundle app → Account → My eSIM → Set up your eSIM and use Install eSIM on this phone, or QR/manual fallback. Confirm the profile appears in phone settings. Installation does not start the bundle; first supported use in coverage does. At your destination, enable the line, select it for data and enable its Data Roaming setting. Keep the profile after the trip.

Yes. Use VPN inside the eSIMbundle app with your normal account. VPN connection requires an active qualifying bundle, including on Wi-Fi. Prepare the app before departure; a bundle awaiting first use may not yet provide access. Choose a country and connect. VPN does not guarantee access to every service.

In Sapa town and along the main highways coverage is generally comfortable. In mountain passes above the valleys, on remote trekking trails and on offshore Ha Long day boats, coverage from any Vietnamese carrier — including your eSIM partner network — can thin out.

Yes. Your eSIMbundle eSIM stays installed on your phone. When you travel to another supported destination, add a bundle for it in your account and it activates on the same eSIM — no new installation required.