[50% OFF / 12.01-12.31] Vietnam Local eSIM (Unlimited Data)

• Select number of days of use and purchase products
• Scan the QR code in the voucher sent to your email
• Register eSIM according to the registration method for your device's operating system.
• Available for use within 30 days from the date of purchase, regardless of the date specified on the calendar.

Operating Hours:
Messenger Customer Center
24 hours a day, 365 days a year

Wired Customer Center
9:00 AM - 6:00 PM (Lunchtime 12:00 PM - 1:00 PM)
Closed on weekends and public holidays

contact :
Domestic: 1661-0158
Overseas (for local disabled users only): 070-5097-6417
KakaoTalk Plus Friend: @Yusimsa

- Refunds are only available within 7 days of purchase.
(However, refunds for the following month may not be processed, and refunds are not available for products already used or registered on a device.)
- Due to the nature of products used overseas, refund requests due to activation issues, unavailability, or eSIM malfunctions may be due to issues with the device in use, incomplete setup, or temporary communication failures, rather than product issues. Therefore, refunds will only be processed after consultation with customer service (phone, email, etc.) using local Wi-Fi, and approval will be required.
- Refund requests made after returning to Korea without prior confirmation may not be processed.
- eSIM products can only be registered and used on the device they were originally registered with.
- Once registered, re-registration on a different device is not possible.

Cancellation/refunds are only available for requests submitted during business hours (9:00 AM - 6:00 PM) on weekdays.