With Visual Voicemail, you can see a list of your messages and choose which ones to listen to or delete. Learn how to set up and transfer your existing voicemail. Create a voicemail password, then tap Done. Enter your password again to confirm it, then tap Done. Select Custom or Default. If you choose Custom, you can record a new greeting. Go to the Phone app, then tap the Voicemail tab. Tap Set Up Now. Enter your password,* then tap done. Record a custom greeting or use the default greeting, then tap Save.
Apple was one of the first companies to include Visual Voicemail on its phones, starting way back in 2007. Rather than having to dial into your normal voicemail system and listening to recorded messages in a fixed sequence, Visual Voicemail shows you a list of your voicemail calls on your screen and lets you listen to them in any order simply by tapping the call in the list.

Open the Google Voice app .At the top left, tap Menu. Settings.In the Voicemail section, tap Voicemail greeting.Tap Record a greeting.Tap Record .Record your greeting and when you’re done, tap Stop .Choose what you want to do with the recording:
You can delete individual voicemails as you listen to them, and most networks will automatically delete old voicemails after 30 days. However, few networks offer a simple way of deleting multiple voicemail messages when your mailbox is full – unless you can use an option such as Visual Voicemail, which lets you delete messages with a quick tap of your finger.