7. Once you begin recording, you'll see the line turn red. This indicates how much time you have left. You'll have about two minutes to record your greeting - chances are you won't need that long.
That’s the simple structure of a voicemail greeting. Overall, your greeting should be professional, but the wording can vary depending on the situation. Check out a sample below.

Increase the odds of getting a call back by mentally composing your message before each call. And remember, people hate it when callers state their name and phone number too quickly in voice mail messages – no one wants to listen to a message ten times to comprehend simple information.
If Set Up Now doesn’t appear, then that means your phone has been set to the automated voicemail option. You can change it whenever you like, though. All you have to do is tap Greeting, which should be at the top-left of the screen.Tap Record, and then speak slowly and clearly into the phone so that your message is recorded.When you are finished, hit Stop.