Yealink SIP-T38G - Manual (Page 41)

Customizing Your Phone
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To unlock the keypad lock via phone user interface:
1. Press any locked key, the LCD screen prompts “Please Enter PIN:”.
2. Enter the PIN (default PIN: 123).
3. Press the Confirm soft key to unlock the keypad.
The icon disappears from the LCD screen.
You can long press to lock the keypad again.
To deactivate the keypad lock via phone user interface:
1. Press Menu->Setting->Advanced Settings (password: admin) ->Phone
Setting->Lock.
2. Press or , or the Switch soft key to select Disabled from the Keypad Lock
field.
3. Press the Save soft key to accept the change.
You can also activate or deactivate the keypad lock via web user interface at the path
Phone->Features->Phone Lock.
Note The default PIN for unlock is 123, you can also unlock the keypad by administrator
password. When you enter the administrator password to unlock the keypad, the phone
will then turn to the Ch ange PIN interface.