Viewing the display screen, Means your phone cannot find a signal, Tells you a call is in progress – Sanyo VM4500 User Manual

Page 22: Indicates you have new text messages waiting, Indicates the pcs ready link service is enabled, Indicates the pcs ready link service is disabled, Indicates the vibrate feature is set to on, Indicates the voice call ringer setting is off, Indicates all the sound settings are off, Indicates you have a new caller’s message