스카이라이프 [Foreigner] What is eSIM?
eSIM is the Sim card that functions as USIM. Unlike USIM, you can use eSIM by downloading the mobile Profile on your phone, scanning QR code without purchasing USIM.





스카이라이프 [Foreigner] How much is the eSIM service fee?
After the reception is completed, the QR code will be sent by email or text message. You can download eSIM by scanning the QR code with the device. After the eSIM is activated, it will be charged ￦2,750 (including VAT)




스카이라이프 [Foreigner] Which mobile devices are available for eSIM?
The devices released after iPhone XS model (Apple), and Galaxy Fold 4 and Galaxy Z Flip 4 models are capable of being applied.
The available devices will be added that can use eSIM.






스카이라이프 [Foreigner] Are there any requirements before using the eSIM?
 First, you need to check that the mobile device can be used with eSIM.
(Call keypad > *#06# > if 4 barcodes are displayed, you can use eSIM.)
And, for downloading eSIM, the mobile device must be connected to cellular or Wi-Fi.






스카이라이프 [Foreigner] What should I do if QR code is not recognized or downloaded?
 If the device information and user information do not match, it will not be downloaded.
Make sure that the EID and IMEI number you entered are correct.





스카이라이프 [Foreigner] Is it only the way to charge after activating eSIM? Is there any way that I can pay right away?
You can't pay immediately because there is no delivery or purchase process, you can only pay by deferred payment.



스카이라이프 [Foreigner] Are all services available by eSIM?
Pre-paid service and two-phone service are not supported.





스카이라이프 [Foreigner] Is it possible to use double eSIM?
 It is possible only for MEP mobile devices. Other mobile devices are not allowed.




스카이라이프 [Foreigner] Is it possible to use another mobile operator, using Dual SIM?
 Available. (You are able to use it abroad.)


출처:  KT Skylife   자주하는 질문: https://www.skylife.co.kr/center/consult/FAQ