Wammu is mobile phone manager running on Linux, Windows and possibly other platforms, where Gammu and wxPython works.
To install it on Ubuntu issue the following command:
sudo apt-get install wammu
Here is a screenshot:
To make your Nokia 6230 connect to Ubuntu using a bluetooth device, edit your ~/.gammurc file to contain:
[gammu]
port = xx:xx:xx:xx:xx:xx
connection = bluerfphonet
name = Nokia [...]