LG LGH502F.ASEAKG Manual page 197

Some applications you download may consume battery power.
•
While using downloaded applications, check the battery charge level.
•
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)
If your phone does not restore to its original condition, use a Hard Reset (Factory Reset)
to initialize it.
1 Turn the power off.
2 Press and hold the Power/Lock Key + Volume Down Button on the back of the
phone.
3 Release the Power/Lock Key only when the boot logo is displayed, then
immediately press and hold the Power/Lock Key again.
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