Tap Bluetooth. If prompted to turn on Bluetooth, tap TURN ON.
Tap a device. If the preferred device is unavailable, tap Scan for devices (at the top). To appear in the Bluetooth devices list, the recipient's device must be discoverable.
If presented with Bluetooth pairing request screen, tap Pair. Bluetooth pairing request must be accepted on recipient's device. To complete the transfer, the recipient must accept the file.