Review: Sony Ericsson C905a
The C905a doesn't stray far from the same user interface that Sony Ericsson feature phones have used for years. It's a combination of the standard Sony Ericsson menu with a few specific items from AT&T tossed in there (AT&T Music, AT&T Navigation, MEdia.Net, etc.). The main menu is a 12-icon grid, some of the icons open up applications, and some open folders.
If you choose to go into the Entertainment menu, you're greeted with a long list of the phone's different entertainment applications. Selecting the media player app brings you to the familiar Sony PlayStation-style menu, with the same icons you'd see on your PSP or PS3.
The Settings folder is by far the most extensive of the menu items, and uses a tabbed set-up to let you find and alter the phone's settings. Scrolling left or right with the D-pad when in this folder takes you to different sets of options.
The app swapper button, located under the send key to the left of the D-pad, brings up a shortcut menu and a method for managing open applications. The shortcuts list comes pre-populated with some applications, but you can also add your own. Similar to the Settings menu, this shortcut menu uses a sideways tabbed system, and the other tabs let you control which applications are running and help you switch between apps that are active, and those that are running in the background. The C905a can also run multiple Java applications at once.