Here an HOWTO for NOKIA 6630 useful for other phones.
The Key is SyncML technology which is a technology that supply a markup language used by many phones industries.

Let's take a backup before proced.

*********GO!
-Install:
"apt-get install libopensync-plungin-file libopensync-plungin-syncml libopensync-plungin-kdepim multisync-gui opesyncutils"

-Turn-on bluetooth on the cell.
It must be (of course) already paired.

-Type on a console "hcitool search" and note the bluetooth address (something like "00:74:15:1

-Type "mkdir ~user/file-sync"
...in practice do a folder in your USER path called file-sync(belong to USER:USER and not root:root)

-Run multisync-gui
-Add a group named 6630-PIM
-Edit the group
-Add a member kdepim-sync and paste next code
and modifyng YOUR HOME whit your:
###############################
<?xml version="1.0"?>
<config>
<!-- ascorteg -->
<!-- directory path for file-sync -->
<path>YOUR HOME fille-sync</path>
<recursive>FALSE</recursive>
</config>
###############################

-Add another member syncml-obex-client to the groupand paste the following code replacing TUO ADDRESS with the
code you obtained with "hcitool search"(use double quotes):
###############################
<?xml version="1.0"?>
<config>

<bluetooth_address>TUO ADDRESS</bluetooth_address>

<bluetooth_channel>11</bluetooth_channel>
<!-- AScorteg -->
<interface>0</interface>
<identifier>PC Suite</identifier>
<version>1</version>
<wbxml>1</wbxml>
<username></username>
<password></password>
<type>2</type>
<usestringtable>1</usestringtable>
<onlyreplace>0</onlyreplace>
<recvLimit>10000</recvLimit>
<contact_db>Contacts</contact_db>
<calendar_db>Calendar</calendar_db>
<note_db>Notes</note_db>
</config>
#############################
Et voilè
Close the group configuration.

I suggest you disable the sync of calendar and other and keep alive only contacts in the beginning.

I've seen that they work but I'm not sure 'cause I don't use regularly them. Try by yourself if you want.

!OHH! Think to me !OHH!
By Scortegagna Alessandro