How do I set up voice mail
How do I set up a voice mail message to answer calls that I can't get to, & to allow a caller to leave a message?
iPhone 6, iOS 8.4
Voicemail is handled by your carrier. You need to see if your carrier supports Visual VoiceMail, or if they use something else. Your carrier account needs to be provisioned for voicemail. Then tap on the Voicemail button in the Phone app to access it. Your carrier may set a standard password, but you can change that.