HTC One E8 - Manual (Page 46)

Extreme power saving mode
In times when you don't need to use much of your phone, turn Extreme power saving mode on to
extend battery life longer. In this mode, standby time can last longer than usual, and you can only
use the most basic functions such as phone calls, text messaging, and email.
1. Go to Settings, and then tap Power.
2. Tap the Extreme power saving mode On/Off switch to turn extreme power saving mode on
or off.
If you want to set when to automatically switch this mode on, tap Extreme power saving
mode and select a battery level.
Tips for extending battery life
How long the battery can last before it needs recharging depends on how you use HTC One (E8).
HTC One (E8) power management helps to increase battery life.
If you like more control by tweaking settings on your own, try out some of these battery saving tips.
Check your battery usage
Monitoring your battery usage helps you identify what's using the most power so you can choose
what to do about it. For details, see
Checking battery usage on page 45.
Manage your connections
§ Turn off wireless connections such as mobile data, Wi-Fi, or Bluetooth when not in use.
§ Turn GPS on only when a precise location is needed, such as while using navigation or
location-based apps. See
Turning location services on or off on page 150.
§ If the Sleep mode option in Settings > Power is enabled, at low 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 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 brightness.
§ Set the screen timeout to a shorter time.
§ Don't use a live wallpaper for your Home screen. Animation effects 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 Settings and security on page 171 and Personalizing on page 55.
46 Your first week with your new phone