Vietnam stretches over 1,600 km from north to south, and network quality shifts from big city to beach town. Here's which eSIM to get for Ho Chi Minh City, Hanoi, Da Nang and Nha Trang.
For a week in Ho Chi Minh City or Hanoi with navigation, ride-hailing apps and social media, 3–5 GB is usually enough. For a multi-city trip — Ho Chi Minh City, Hanoi, Da Nang, Nha Trang — with hotel bookings and a translation app on the go, get 8–10 GB or more.
Coverage is fast and reliable almost everywhere in Ho Chi Minh City and Hanoi. Resort towns Da Nang and Nha Trang also have good coverage in tourist areas and along the coast, though speeds can be lower in remote villages and mountain areas.
Install the eSIM at home ahead of time — handy if your flight has a layover elsewhere and you want to stay connected at that airport too. Only turn on data roaming once you've landed in Vietnam.