HTC One User Manual page 84

84 Your first week with your new phone
Turn GPS on only when a precise location is needed, such as while
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using navigation or location-based apps. See
services on or off
If the Sleep mode option in Settings > Power is enabled, at low
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peak times, your phone will turn off the data connection after the
screen has been off for 15 minutes and there's no network activity
(no downloads, streaming, or data usage). The data connection
resumes when you switch the screen back on.
Turn on Airplane mode when you don't need any wireless
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connections and you don't want to receive calls or messages.
Manage your display
Lowering the brightness, letting the display sleep when not in use, and
keeping it simple helps save battery power.
Use automatic brightness (the default), or manually lower the
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brightness.
Set the screen timeout to a shorter time.
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Don't use a live wallpaper for your Home screen. Animation effects
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are nice to show off to other people but they drain your battery.
Changing your wallpaper to a plain, black background can also help
a little. The less color is displayed, the less battery is used.
For more details, see
on page 87.
on page 259.
Settings and security
Turning location
on page 298 and Personalizing