Overseas eSIM guide
eSIM for Vietnam
Data-only eSIM for travel, business or study in Vietnam. Set it up on your phone before departure and get online as soon as you arrive.
See Vietnam plans最低 From 0.50 USD / 7天
- Vietnam coverage
- Data-only (voice/SMS may not be supported)
- QR or manual setup (prepare over Wi-Fi before you go)
- Turn on mobile data after arrival to start using it
What this page covers
- Recommended plans
- How to choose data
- How to set up
- If it won't connect
- 常见问题
Why use an eSIM in Vietnam
- No hunting for a physical SIM at the airport—set it up on your phone before you go
- Keep your home SIM in place and just add an overseas data plan
- Use maps, ride-hailing, messaging and translation apps right after arrival
- Choose data and days to fit anything from short trips to long stays
Recommended eSIM plans for Vietnam
How to choose your data amount
- Email, maps, messaging: about 0.3–0.5GB per day
- Plus SNS, photos, browsing: about 0.5–1GB per day
- Heavy video or tethering: about 1–2GB+ per day
- For long stays or uncertain use, consider an unlimited plan
These are rough guides; actual usage varies by app and behavior.
Setting up your eSIM for Vietnam
Before departure, set up the eSIM over Wi-Fi (QR or manual)
On arrival in Vietnam, select Bloomy eSIM for mobile data
Turn on data roaming for the Bloomy eSIM line if needed
Device compatibility & SIM lock
You need an eSIM-compatible, carrier-unlocked device. Please check your device supports eSIM before buying.
If it won't connect in Vietnam
Check that Bloomy eSIM is selected for mobile data, data roaming is on, and you have signal.
FAQ: eSIM for Vietnam
Will this eSIM work in Vietnam?
We offer plans that cover Vietnam. They work on eSIM-compatible, carrier-unlocked devices.
When should I set it up?
Install it over Wi-Fi before departure, then turn on mobile data after arriving in Vietnam.
Can I use a phone number or SMS?
Plans are data-only. Voice/SMS may not be supported, but internet apps like LINE and WhatsApp work fine.
What happens if I run out of data?
Depending on the plan, data stops or slows. You can buy a top-up or another plan if needed.
Related pages
Heading to Vietnam?
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