This article explains how to set up and use voicemail on an iPhone 13.

Like previous iPhones and iterations of iOS, setting up voicemail on iPhone 13 takes just a few taps. Open the Phone app, tap Voicemail, then select Set Up Now. Choose a password for your voicemail, then select a default or custom greeting.

Once you follow the steps above, voicemail will be set up and ready to use on your iPhone 13.

Once you've set up your voicemail, you can easily listen to it by opening the Voicemail tab in the Phone app.