I recently needed to backup the contents of my Sony Ericsson K750i. Since the utilities provided with the phone only work on Windows, I had to hunt for a similar application for Linux.
Wammu is a GUI application that can be used to manage a vast number of mobile phones. It uses the Gammu utilities in the back-end and provides a nice GUI front-end to control every aspect of the mobile phone such as the Address book, Calendar, Task list, Call lists, Messages etc. A large number of mobile phones are supported by this tool, a comprehensive list can be found here. Phones can be connected either via USB, IrDA or Bluetooth.
The setup was straightforward.
sudo yum install wammu pybluez
The pybluez package is only required if you want to connect to the phone via bluetooth.
The GUI is quite easy to navigate through. Therefore I am not going to go in to specifics. A screenshot is more than enough to see how intuitive the interface is.