You can use a PIN to unlock your phone. You or the administrator can set the PIN. For a Single sign-on (SSO) login, you must set the PIN. When SSO is active, you can unlock the phone only with the PIN you set.

For a SIP login, you can use the PIN you set, an administrator-defined PIN or your SIP password. A PIN must consist of digits.

You cannot unlock the phone if you enter an incorrect PIN.