The SIM tray is located on the right of the device.
Insert the SIM eject tool into the small hole and push firmly, until the SIM tray releases.
Remove the ejector tool and pull the SIM tray out.
Place the Nano SIM card into the tray.
Note: The angled corner ensures that the Nano SIM can only be inserted one way.
Carefully place the SIM tray back into the slot and push the SIM tray firmly shut, until it is flush with the device.