Korea Voice and Data SIM Card China Unicom Detailed Description:
Korea Voice and Data SIM Card China Unicom, Plan 5 Days – 8 Days: This SIM card uses SK Telecom’s signal (SK Telecom is one of the biggest telecom companies in S.Korea)
This SIM card is a ready to use card, there is no activation and passport information needed, no contract. The card is ready to use when you land in Korea, easy and convenient.
Talk
Includes 20 minutes of calling to Korean phone numbers. The SIM card comes with a Hong Kong phone number (+852). This applies to both the 10GB and 20GB data plans.
Note: the calling rate above is applied for standard calls only. It does not apply to satellite calls, Skype calls, or other calling types

Use Korea Voice and Data SIM Card China Unicom in Busan – Korea #travelwithgloka
Internet
5 Days Plan: Unlimited internet access with 10GB of high-speed data (speed throttled to 2G speed – 128kbps if 10GB high-speed data is used up). Hotspot supported.
8 Days Plan: Unlimited internet access with 20GB of high-speed data (speed throttled to 2G speed – 128kbps if 20GB high-speed data is used up). Hotspot supported.
Note: This SIM card does not support TikTok or ChatGPT apps.
*Calling to Vietnam: With an internet connection, you can easily use calling apps like Viber, Skype, or Facebook to make calls to Vietnam at a much lower cost. (Learn more about how much data a Viber call uses.)
Activation
The card is ready to use, please insert the SIM card into a mobile device and open Data Roaming to use when you arrive.
The period of validity of the SIM card you have selected runs from when the SIM card is inserted into a mobile device.
Note:
+ Please do not insert the card in Vietnam, as this may cause card failure.
+ Data roaming is always ON
Warranty Policy
Gloka provides warranty support throughout the entire period you use the SIM. Our customer service is available 24/7 — 24 hours a day, 7 days a week, including Sundays and public holidays.
- Free SIM replacement in Vietnam if your device shows “No SIM” after testing the SIM in Vietnam.
- Free eSIM replacement if the eSIM stops working due to technical issues during use and your device displays “No SIM.”
Note: SIMs damaged due to user-related causes will not be eligible for free replacement. This includes damage from dropping, losing the SIM, or physical scratches caused by heavy pressure or mishandling.
Terms and Conditions
Please check our Terms and Conditions at this link before placing an order.