You can install the eSIM directly after ordering and activate your plan, or you can wait until you travel to the respective country.
Both options work without any problems. In any case, the usage period of the eSIM only begins when it connects to the mobile network in the destination country for the first time.
Please make sure that the 'mobile data' in the device settings is set to the correct SIM or eSIM.
Example: If you are still in Germany, your regular SIM should take over the 'mobile data'. Once you are in the destination country (e.g., USA), our eSIM should take over the 'mobile data'.
If you have any further questions, please feel free to contact us at any time: support@simly.com