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.
Calls will still technically be delivered to your phone, but your phone will not alert you to the call. This is a handset block and not a network block. You can put a network block on persistent telemarketers, but you need to contact your network provider for that. To view voicemails from blocked calls, go to Voicemail, then scroll all the way to the bottom and tap “Blocked Messages.”

If your iPhone has support (via your mobile carrier) for 3-way calling and Visual voice mail, you have an option for the cheapest workaround of all.
After helping tens of thousands of companies set up voicemail systems, we’ve learned that there is no set of rules defining what makes a great business voicemail, but there are definitely some key points that you should aim to hit. Before you hit the record button for your voicemail message, take some of these tips into account: