eSIM.co.jp
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DestinationsVietnamUnlimited data / 9 days

Vietnam Unlimited data
9-day plan

No speed cap (tethering capped at 500MB/day)

Tethering (hotspot) is limited to 500MB per day
The date rolls over around 01:00 Japan time — activating just before that can burn most of day one

Only with eSIM.co.jp

Support you can count on
If a network problem stops you using the plan, we look into what happened and then refund you or send a replacement eSIM.
Keep your Japanese number
Your Japanese line stays in the phone. Your number and LINE do not change.
Support on LINE
Stuck on setup? Message a real person on LINE. Just add us as a friend — no phone call, no account.

How activation works

Starts when the eSIM first connects to a local network at your destination — installing it before you leave does not start the clock.

Plan details

Coverage
Vietnam
Networks
Vinaphone / Viettel（3G/4G/5G）
High-speed data
No cap
When the period starts
Starts when the eSIM first connects to a local network at your destination — installing it before you leave does not start the clock.
How the period is counted
The plan is counted in local (UTC+8) calendar days, so a day ticks over around 01:00 Japan time
Tethering
Supported
Voice / SMS
Not supported (data only)
Valid for
9 days from activation
Activate by
Activate within 30 days of receiving the QR
Cancellation
Full refund any time before you add the eSIM to your device
Receipt
Download any time from your order page
Please note
Once the QR code has been scanned and the eSIM added to your device, the plan cannot be cancelled or refunded — whether or not the line has been activated. Please check device compatibility and SIM lock status first.
Vietnam eSIM — Unlimited data, 9 days