If you're moving or travelling to the U.S. and taking out a U.S. World Mobile ahead of time you must install and activate it once you are within the United States in order to avoid any issues with activation.
The World Mobile eSIM can only be installed once. Do not remove the eSIM from your phone once it has been installed.If your eSIM has been accidentally removed from the device, you're switching devices, or you encounter any issues with installation and activation, please reach out to us by submitting a ticket here.