How to Set Up Voicemail: Record a Greeting
To set up voicemail, open your Phone app and tap Voicemail, or press and hold 1 to call your voicemail service. Follow the carrier prompts to create a PIN and record a greeting. On iPhone, the setup option is usually in Phone > Voicemail; in Google Voice, open Menu > Settings > Voicemail greeting. Call your number afterward to confirm it works.