How to disable the Lock screen password?

For Funtouch OS 3.1 and higher version: Go to Settings>Fingerprint, face and password(Face and password)(Fingerprints and passwords)(Security)>Screen lock>Choose none to disable it.

For Funtouch OS 3.0: Go to Settings>Security(Fingerprints and passwords)>touch Disable the lock screen password>enter the old password to disable it.

For Funtouch OS 2.6 and lower version: Go to Settings>Security(Fingerprints and passwords)>Screen lock>enter the old password>select None to disable it.