Vietnam eSIM.

Vietnam eSIM

Vietnam is one of the most popular travel destinations, and staying connected while you're there shouldn't mean paying your carrier's roaming rates. A Vietnam eSIM from Roamza lets you buy your data before you fly, install it at home, and switch it on when you arrive — no SIM swap, no airport queues.

Whether you're navigating the buzz of Ho Chi Minh City, wandering the lantern-lit streets of Hoi An, or cruising Ha Long Bay, a travel eSIM means you can use Google Maps to find your way, book a Grab from the airport, and message your hotel on WhatsApp without hunting for free Wi-Fi. Once your eSIM is connected, you can use mobile data for apps such as Google Maps, translation apps and messaging services.

On compatible dual-SIM devices, you can generally keep your home SIM installed while using your Vietnam eSIM for mobile data. Calls, SMS and other services on your home SIM remain subject to your home carrier's roaming terms and settings. Use your travel eSIM for mobile data instead of relying on your home carrier's international roaming data.

How much data do you need in Vietnam?

It depends on how you use your phone day-to-day. Here's a rough guide:

• Light use: Google Maps for getting around, messaging family and friends, and light browsing. A smaller data plan is usually plenty.
• Everyday use: Navigation, Grab for rides, translation apps, social media, and booking accommodation or tours. Most travellers fall here — a mid-size or unlimited plan is a safe pick.
• Heavy use: Video uploads, streaming, video calls, or sharing hotspot with a travel partner where supported by your plan. Go for a larger or unlimited plan.

Our Vietnam plan selector above shows live plans and prices — pick the one that matches how you'll use data.

Using mobile data while travelling around Vietnam

A Vietnam eSIM is handy for travelling between destinations. Once your eSIM is connected, you can use Google Maps to navigate from Hanoi to Da Nang, book a Grab or train ticket on the go, and translate menus and signs as you move from city to town. If you're heading from Ho Chi Minh City up the coast to Nha Trang, or flying to Phu Quoc for some beach time, a travel eSIM keeps you connected without swapping SIMs at every stop.

It's worth knowing that mobile coverage in Vietnam can vary by network, location and selected plan. Coverage is generally good in urban areas like Ho Chi Minh City, Hanoi and Da Nang, and is expanding along the coast and highlands — but outside cities and major tourist routes, signal can be patchy or unavailable. A travel eSIM gives you data where there's coverage, but it won't guarantee a connection in every rural or remote area. If you're heading well off the beaten track, plan for stretches without mobile data and download offline maps before you go.

Setting up your Vietnam eSIM

Setup takes about five minutes and we recommend doing it before you leave Australia. Once you buy, we email your eSIM QR code and step-by-step instructions. Scan the code, follow the prompts, and your phone is ready. Installing your eSIM at home over Wi-Fi is separate from activation — you can install before you fly, and the plan activates according to its own terms. Activation conditions vary by plan — check your selected eSIM's activation details before travelling. Not sure if your phone is compatible? Check compatibility before you buy.

Vietnam eSIM vs physical SIM

There are two main ways to stay connected in Vietnam:

• eSIM: Buy before you fly, install at home, and switch on when you land. You keep your home number on compatible dual-SIM devices, skip the airport SIM queues, and walk off the plane already connected. Best for travellers who want data sorted before departure.
• Physical SIM: Buy at an airport kiosk or convenience store in Vietnam. You'll queue, show your passport, swap your SIM tray, and get a new local number — and your home SIM is out of the phone while it's in use. Works, but takes time and means you're juggling two physical cards.

Neither is universally better for everyone — it depends on your trip length, how many devices you need online, and whether you want to keep your home number active. For most Australians heading to Vietnam, an eSIM is the simplest option.

Ready to go? See Vietnam plans and get your eSIM, or get in touch if you have any questions. See our Fair Use Policy for unlimited plan details, or the installation guide for step-by-step setup.