Android

Newby question here: I'd like to activate voicemail on my shiny new Galaxy a11. Googling for advice, I'm told to hit the voicemail icon in Phone app. Catch 22: there is no such icon! At the Phone app screen I see the keypad, the tilted green phone, and three choices: Keypad, Recents, Contacts. No voicemnail icon. What to do, what to do?? TIA for help!!