LG LGL55C - Manual (Page 93)

2. Press and hold the following keys for over 10 seconds: Down Volume Key +
+ .
3. You will enter the Android system recovery mode
4. Press the down Volume Key to scroll to
wipe data/factory reset and press
to select it.
5. Press the down Volume Key to scroll to
Yes -- delete all user data and press
to select it.
6. After the data wipe is complete, press the down Volume Key to scroll to
reboot system now and press
to select it.
Your Device's Unlock Pattern, Pin, or Password Feature
You can increase your device’s security by creating a screen unlock pattern
(disabled by default), by creating a PIN, or by choosing a Password. When these
features are enabled, you must draw the correct unlock Pattern, enter the PIN, or
enter the Password on the screen to unlock and regain access to the device.
Your Device's Lock Feature
1. Press > >
Settings > Location & security.
2. Tap
Set up screen lock.
3. Select
Pattern, PIN, or Password.
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Device Settings