typical bluetooth adapter (left) and plugged-in bluetooth adapter (right)
Step 1: Go to synaptic. update your source.list by clicking "reload".
Step 2: Install the "blueman" package.
Step 3: Press Alt+F2. Run "blueman-applet" command.
Step 4: There will be two bluetooth icon on your desktop on the panel. click the little one, near the date panel item. Then, click "Preferences".
Step 4: In Bluetooth Preferences dialog box, tick the "Make Computer Visible" option. You can change bluetooth name under friendly name field.
There you go. You can send and receive files from and to your mobile device.