How do I install and activate a global eSIM?

Installation typically takes 2-5 minutes: 1) Purchase plan through provider app/website, 2) Receive QR code via email or in-app, 3) Go to Settings > Cellular > Add eSIM > Scan QR code, 4) Label the new line (e.g., "Travel Data"), 5) Enable data roaming. Install before departure while on WiFi, but most eSIMs only activate billing when you connect to destination networks.