About Phone - LG K420n Manuel D'instructions

Automatic restore – When reinstalling an app, restore backed up
•
settings and data.
Factory data reset – Reset your settings to the factory default
•
values and delete all your data. If you reset the device this way, you
are prompted to re-enter the same information as when you first
started Android.

About phone

View legal information, check device status and software versions, and
perform a software update.
On the Settings screen, tap General tab > About phone.
Settings 77