Password & security
Go to Settings > Password & Security to set up fingerprints,
faces and passwords for your phone
Set Lock screen Password
Your Lock screen password cannot be retrieved if you forget it and
you will no longer be able to unlock your phone or view phone
data.
Enter 6 digits password for Lock screen password
Set privacy password
The privacy password will be used for verification in features such
as App lock.
Use a different password type: You can choose different ways
to set your lock screen password, including pattern, 4-digits
password, 4-16 digits password and Password with 4-16
alphanumeric characters.
Fingerprint:
You can add/delete fingerprints and set fingerprint preferences
through Fingerprint.