LG G4 User Manual page 43

From then on, any time you want to unlock the screen, you'll need to
perform the unlock action you set (swipe, Knock Code, pattern, PIN, or
password) to gain access to it.
Changing Your Screen Lock
1. Tap the Home Button
Lock screen settings.
2. Tap Select screen lock.
3. Confirm your unlock information (if necessary).
4. Tap the desired screen lock option.
5. You're prompted to enter your screen unlock sequence (and Backup PIN,
if necessary).
NOTES If you've set up a Microsoft Exchange account, you might only be able to use a
password.
After 5 unsuccessful attempts to unlock your phone, you're prompted to enter a
text phrase to confirm that you're trying to unlock your phone.
You have 10 opportunities to enter your unlock sequence. After 10 unsuccessful
attempts, your phone will automatically perform a factory data reset and all of your
personal files will be erased. You will be warned after the 9th unsuccessful attempt.
If you've set a Knock Code, after 6 unsuccessful attempts, you're prompted to enter
your Backup PIN to unlock your phone.
Security lock timer
If a security lock is enabled, you can set the delay time after the screen
darkens due to inactivity before the screen automatically locks and requires
you to enter your unlock sequence.
1. Tap the Home Button
Lock screen settings.
2. Tap Security lock timer, then tap the setting you want to use.
Power button instantly locks
If a security lock is enabled, checkmark the Power button instantly locks
checkbox to override the Security lock timer setting and lock the screen as
soon as you press the Power/Lock Key
> touch and hold the Recent Apps Button
> touch and hold the Recent Apps Button
(on the back of the phone).
The Basics
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