LG Spirit H440n User Manual page 16

NOTE: If you accidently press the Power/Lock Button while the device is
in your pocket, the screen will turn off automatically in order to save battery
power.
3. Before installing an open source application and OS
WARNING
If you install and use an OS other than the one provided by the manufacturer
it may cause your phone to malfunction. In addition, your phone will no longer
be covered by the warranty.
WARNING
To protect your phone and personal data, only download applications from
trusted sources, such as Play Store™. If there are improperly installed
applications on your phone, the phone may not work normally or a serious
error may occur. You must uninstall those applications and all associated data
and settings from the phone.
4. Using the Hard Reset (Factory Reset)
1
2 Power/Lock Button + Volume Down Button
Important notice