HTC One E8 - Manual (Page 243)

Settings 230
During phone storage encryption, the phone may restart a few times. When storage encryption is
complete, enter your PIN or password.
Note: If you turn off SD card encryption to stop encrypting new files, previously encrypted files will
remain encrypted. To access these files, you must enable encryption again for your storage card.
Power Settings
Use the Power settings to check the phone’s battery, enable Power saver mode, and more.
Optimize Battery Life with Power Saver Mode
Power saver mode helps to increase battery life. It reduces the usage of phone features that drain
the battery such as the display and data connection.
1. With two fingers, swipe down from the status bar to open the Quick Settings panel.
2. Touch below the POWER SAVER tile to choose which phone features to conserve power
for.
Note: If Data connection is selected, your phone automatically disconnects from the mobile
network after 15 minutes when the screen is off and the data connection is idle (no download activity,
streaming, or data usage). It reconnects and then disconnects periodically when the data connection
is idle to save battery power.
Note: Keep in mind though that the Sleep mode option for the data connection in Settings >
Power, when enabled, overrides power saver mode.
3. Touch the ON/OFF switch next to Power saver to turn Power saver mode on or off.
Use 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. With two fingers, swipe down from the status bar to open the Quick Settings panel.
2. Touch the EXT SAVER tile to turn the mode on. Or to set when to automatically switch this
mode on, touch below the tile.
3. Select the check box, and then choose at which battery level the mode will turn on.