You will only be able to install or activate the eSIM after you have entered the EID number.
※ If you have not yet entered the EID number, then please check this FAQ.

The time you enter the EID number will determine the time your eSIM can be activated. 

①Enter EID number by 18:00 a day before the activation day.
You will be able to activate the eSIM directly on the activation day.

②Enter EID number between 18:00 a day before the activation day and 9:00 on the activation day.
The eSIM issue will be done at 9:00 on the activation day, and the process will take around 30 minutes.
This means the eSIM will be ready for you to activate around 9:30.

③Enter EID number between 9:00 - 18:00 on the activation day or after the activation day.
It will take around 30 minutes to issue the eSIM, so the eSIM will be ready for you to activate 30 minutes later.

④Enter EID number after 18:00 on the activation day or after the activation day.
The eSIM issue process will start on 9:00 on the next day, and the process will take around 30 minutes.
This means the eSIM will be ready for you to activate around 9:30.