Use the Accounts & sync settings menu to add, remove, and manage your GoogleTM and other supported accounts. You also use these settings to control how and whether all applications send, receive, and sync data on their own schedules and whether all applications can synchronize user data automatically.
GoogleTM, Calendar, and other applications may also have their own settings to control how they synchronize data; see the sections on those applications for details.
General sync settings
Background data Checkmark to permit applications to synchronize data in the background, whether or not you’re actively working in them. Removing the checkmark can save battery power and lowers (but does not eliminate) data use.
Auto-sync Checkmark to permit applications to synchronize, send, and receive data on their own schedule. If you remove the checkmark, you must touch an account in the list on this screen and touch the Menu Key > Sync now to synchronize data for that account. Synchronizing data automatically is disabled if Background data is uncheckmarked.
Backup Assistant Plus Allows you to manage the Backup Assistant Plus settings.
Manage accounts
List of all Google Accounts and other accounts you’ve added to the phone. If you touch an account in this screen, its account screen opens.