What sync does
When your phone syncs, your Google apps refresh their data, and you get notifications about updates.
Which apps sync
By default, apps made by Google sync automatically. You can turn auto-sync off and back on for individual apps.
Whether other apps (not made by Google) can sync varies by app.
If you turn off auto-sync
Turning off auto-sync doesn’t remove the app or your data. It only stops the app from automatically refreshing your data.
To receive emails, calendar reminders, or other notifications from Google apps, you’ll need to sync manually.
See which Google apps auto-sync
Check other apps
To see if your other apps can auto-sync:
Review the list of accounts:
Turn off for certain Google apps
Turn off the apps you don’t want to auto-sync.
For example, sync your Calendar and Gmail but don't sync Drive.
Turn off for your Google account
Turn Automatically sync data off
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To collect messages, email, calendar, or other app updates, you'll need to sync the accounts manually.
Select an issue to see troubleshooting steps: