When autosync is enabled, data from all accounts is automatically synched in the background on a repeating schedule. Most accounts enable you to set an autosync schedule, as well as specify which data types to sync and which ones to ignore. You can leave autosync on at all times, periodically disable it, or ignore it and run manual syncs on selected accounts whenever your data has changed.
1. On the Home screen, press the Menu key and tap Settings.
2. On the Settings screen, tap Accounts and Sync.
3. On the Accounts and Sync ...