To change your voicemail message on iPhone: 1. On your home screen, tap Phone. Tap the Phone icon on your home screen to launch your device’s phone calling app. 2. At the bottom, tap Voicemail on the menu bar. You will see a menu bar appear at the bottom of your screen. Tap Voicemail in the bottom right corner. 3. Tap Greeting in the top left
3. At the top of the page to select all messages in the list, check the checkbox. Or to delete a selected few, check the box beside each message.

You can create a custom voicemail greeting on your iPhone 5 that is in your voice, and says exactly what you want it to say. So continue reading below to learn how to record a voicemail greeting on your iPhone and set it to play on any call that goes to voicemail.
The telephone systems have the feature named as Voicemail. VoIP is the best example of it. When a receiver is unable to pick up the phone, then the caller can leave the voice message on the receiver’s phone. In older telephonic machines, such messages were stored as a voice message directly, and the receiver can hear them later. In modern telephone systems, such info is being stored on the server of the service provider in the user’s mailbox. It is similar to email in which the messages are saved in the form of audio instead of text.