LG MM-535 Owner's Manual page 14

All unanswered calls to your Sprint PCS Vision Phone are
automatically transferred to your voicemail, even if your phone is in
use or turned off. Therefore, you will want to set up your voicemail
and personal greeting as soon as your Sprint PCS Vision Phone is
activated.
Press and hold
Follow the system prompts to:
Create your pass code
Record your greeting
Record your name announcement
Choose whether or not to activate One-Touch Message
Access (a feature that lets you access messages simply by
pressing and holding
enter your pass code)
For more information about using your voicemail, see
"Using Voicemail" on page 117.
.
, bypassing the need for you to