Vietnam eSIM

Activation is automatic — there are no manual steps. Once the eSIM profile is installed on your phone via the QR code from your eSIM Cards email, it sits ready until your device connects to a Vietnamese mobile network.

Most flagship smartphones from the past five or six years support eSIM. On the Apple side, that is iPhone XS (2018) and every model since. On Android, Samsung Galaxy S20 and later, Google Pixel 3 and later, and a range of devices from Sony, OnePlus, Motorola, Oppo, and others all support eSIM.

The best eSIM for Vietnam plans are available through the eSIM Cards website at esimcards.co.uk — you browse the plans, pick one, pay online, and the QR code arrives in your email.

Yes, for a few practical reasons. Buying in advance means you can install the profile at home over your own Wi-Fi, confirm it is working correctly, and step off the plane already connected. If you wait until arrival, you need to either find airport Wi-Fi to complete the installation or queue at a SIM counter for a physical card.

The eSIM wins on convenience: no passport registration, no queue, installed before you land, and nothing physical to lose on a motorbike ride or overnight train.

Yes, where the network is available. Vietnam's 5G rollout is active and expanding, with Hanoi and Ho Chi Minh City the primary areas with 5G infrastructure. Da Nang and other major cities are in various stages of rollout. Outside these urban centres, 4G is the standard, and coverage is reliable on the main tourist routes.

Yes, using eSIM is as secure as any mobile data connection. eSIM is also a bit more security than physical SIMs: you can’t physically steal or clone a profile, and you don’t have to go into a store to swap it, which makes users vulnerable to SIM swapping attacks.

Yes — when you scan the QR code to download the eSIM profile, you need to be connected to Wi-Fi or data. The profile is downloaded via the internet during the installation process, so you have to be online at that time. That is why doing the installation at home prior to your trip is the recommended approach.

No — each eSIM profile is associated with one device only. The QR code can usually be scanned and installed only once – on the phone the code is first used on. You can’t transfer the same profile to a second phone or use it on a tablet at the same time.

After purchasing through eSIM Cards, open the email with your QR code. On iPhone: go to Settings > Cellular > Add eSIM and scan the code with your camera. The exact path differs slightly depending on the manufacturer, but it’s the same principle — head over to SIM or mobile network (depending on your device and OS version) in settings, and then tap on the option to add a new plan digitally.