Smartphones are now real mobile terminas with sophisticated operating systems. In addition to phone calls, they provide serveral other features such as the camera, media player, organizer, web browser, ... Almost all of the devices require the installation of software, or at least a driver, in order to be recognized by the computer and then synchronize your data.
Here is a list of software to be installed for the each specific brand.
Software and drivers to synchronize your phone and computer
The Nokia Suite: this program has replaced the popular Nokia Ovi Suite and Nokia PC suite for more than a year, and is compatible with most Nokia phones.
Download Nokia Suite