Each carrier has a different method for setting up voicemail, and we’ve provided a brief description of how to do it (and where to find instructions) where applicable below.
You can record custom messages right from your dashboard using Dial-and-Record, which allows you to record it through your phone. Then, once they’ve been recorded, they’re saved in your account to be placed in any section, such as for the welcome greeting, menu prompt, or voicemail greeting, in addition to other sections. Enter the number of rings between 0 and 9, or press #. If you choose 0, calls will go straight to your voicemail without ringing first. If you choose # calls won't go to voicemail at all. The phone will ring until you answer or the caller hangs up. Follow the voice prompts.

If a phone rings once and then goes to voicemail or rings only briefly, it usually means either that your call is blocked or that the phone is not receiving calls at all. If the phone rings five times and then voicemail picks up, it's more likely that the person on the other end simply isn't picking up the call.
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.