LG LGL45C - Manual (Page 169)

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Privacy: Factory Data Reset
Resetting the device restores all the factory defaults and erases all
personal data, including from the internal storage, information
about your Google Account, any other accounts, your system
and application settings, and any downloaded applications.
Resetting the device does not erase any system software updates
you’ve downloaded or any files on your microSD card, such as
music, pictures, or applications. After resetting the device, the
next time you turn on the device, you’re prompted to reenter the
same kind of information as when you first started the device.
1. Press > >
Settings > Privacy > Factory data reset.
2. If you are certain that you would like to restore all factory
settings, tap
Reset phone.
3. Tap
Erase everything to confirm.
Accounts and Messaging