How do I install an eSIM on iPhone?

Connect to Wi-Fi. Open Settings, then Cellular or Mobile, then Add eSIM. Choose Use QR Code and scan the code from your order. You can also enter the details by hand.

Install each eSIM only once. Removing it can make it impossible to install again.

When you arrive, turn on the eSIM, select it for mobile data, and turn on data roaming for it.