From the manual...
From the Home screen, tap .
Find and tap Settings > Wireless & networks.
Mark the Bluetooth checkbox. appears in the status bar.
Tap Bluetooth settings.
Mark the Discoverable checkbox. The phone will now be visible to other devices for 120 seconds.
Sending device: Send one or more items to your phone using Bluetooth™.
If asked, enter the same passcode on both devices, or confirm the suggested passcode.
When you are notified of an incoming file to your phone, drag the status bar downwards and tap the notification to accept the file transfer.
Tap Accept to start the file transfer.
To view the progress of the transfer, drag the status bar downwards.
To open a received item straight away, drag the status bar downwards and tap the relevant notification.
Your phone must have a memory card inserted to be able to receive items using Bluetooth™ wireless technology