Open the Notifications panel and tap New voicemail.
OR
Tap the Voicemail icon on the Home screen.
OR
From the Home screen, tap Phone ,
then tap the Voicemail Key
.
Typically, your carrier’s voicemail system guides you through the
process of listening to and managing your voicemail. The first time
you call your voicemail, it also guides you through the process of
recording greetings, setting a password, etc.