Sony Ericsson W850i Quick Start Manual page 4

Back key: press to take you back to a previous menu or
screen. Press and hold to return to the standby screen.
Clear key: press to delete a character of text. Press and
hold to delete all text. Press this key to delete contact
entries and other items.
Walkman key: press to open the Walkman® Music Player
(see page 19). Press again to return to the main menu.
Camera key
(on the right side of the phone): press to start
the camera, and to take a photo or video clip.
Volume keys
(on the right side of the phone): press to
adjust to volume, and to zoom in and out of photos. Press
once in standby mode to show the phone status.
Picture keys
(above the screen): in standby mode, press
the left picture key to view your pictures full screen, or the
right one to view them as thumbnails.
In camera mode (see page 10) they change picture
settings.
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