2.Press 
> Settings > Connection > Bluetooth Link > Find Me.
If the M990 was already connected to a compatible Bluetooth device in the past, a history list of such devices will be displayed. Scroll to the desired device, press Select and skip steps 3 to 4.
If the M990 was not connected to any compatible Bluetooth devices in the past, it will search for available Bluetooth devices that support the Synchronization Profile and display a list of the detected devices. If only one Bluetooth device was found, the M990 will automatically select it and you can skip step 3.
3.Scroll to the mobile device you wish to connect your M990 to and press Select.
4.If necessary, enter the other device passkey and press Ok.
5.Initiate the synchronization on the other device.
Note: You can only synchronize phonebook entries stored on the phone memory with this feature. Phonebook entries stored on SIM cards will not be synchronized.
Multiple User Profiles
Your phone supports four user profiles – one default profile, and three customizable profiles. Each profile stores the following information:
•Phonebook entries – 1500 entries for all User Profiles (phone memory only, SIM contacts are excluded).
•Calendar entries.
•Personal data – Home Screen, Main Menu, Color Style, Greeting, Wallpaper, and Screen Saver.
•Ring styles – Ring Volume, Line 1, Line 2, Messages, Voicemail, Info Svcs, Data Calls, Fax Calls, Ringer IDs, Key Volume, Reminders.
Main Attractions – 19