HTC Desire 816 User Manual page 216

Manage Your Apps
Install the latest software and application updates. Updates sometimes include battery
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performance improvements.
Uninstall or disable apps that you never use.
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Many apps run processes or sync data in the background even when you're not using them. If there
are apps that you don't need anymore, uninstall them. See Uninstall Third-party Apps.
If an app came preloaded and can't be uninstalled, disabling the app can still prevent it from
continuously running or syncing data. In Settings > Apps, swipe to the ALL tab, touch the app,
and then touch Disable.
Limit Background Data and Sync
Background data and sync can use a lot of battery power if you have many apps syncing data in the
background. It's recommended not to let apps sync data too often. Determine which apps can be
set with longer sync times, or sync manually.
In Settings, touch Accounts & sync and check what types of data are being synced in your
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online accounts. When the battery is starting to run low, temporarily disable syncing some data.
If you have many email accounts, consider prolonging the sync time of some accounts. In the
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Mail app, select an account, touch > Settings > Sync, Send & Receive, and then adjust the
settings under Sync schedule.
When you're not traveling from one place to another, sync weather updates of only your current
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location, rather than in all of your named cities. Open the Weather app, and then touch > Edit
to remove unneeded cities.
Choose widgets wisely. Some widgets constantly sync data. Consider removing the ones that
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are not important from your Home screen.
In Play Store, touch > Settings, and then clear Auto-add widgets to avoid automatically
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adding Home screen widgets whenever you've installed new apps. Also touch Auto-update
apps > Do not auto-update apps if you're fine with updating apps from Play Store manually.
More Battery Saving Tips
To squeeze in a little bit more battery power, try these tips.
Tone down the ringtone and media volume.
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Minimize the use of vibration or sound feedback. In Settings, touch Sound and choose which
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ones you don't need and can disable.
Check your apps' settings as you may find more options to optimize the battery.
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Settings 204