Install eSIM on iPhone
- 1Open Settings → Cellular (or Mobile Data) → Add eSIM.
- 2Choose Use QR Code, scan the code from your email and follow the on-screen instructions.
- 3Give it a clear label such as “Vatican City State eSIM”. Keep your primary SIM as the default voice line if you need calls or OTP messages.
- 4When you arrive in Vatican City State, select the eSIM for Cellular Data, enable Data Roaming for it and turn off “Allow Cellular Data Switching”.