To set up voicemail on your iPhone: 1. First, tap Phone. 2. From the menu that appears at the bottom, select Voicemail. 3. On the next screen, tap Set Up Voicemail. 4. Enter a password you want to use for your voicemail, then tap Done. 5. Select a custom voicemail greeting or the default one.
♬ Fight With All Your Might! ♬ How to change your voice mail greeting on your Mitel phone. Tags: Mitel, voicemail. Go into voice mail. Press 8 or U for User Options. Press 4 or G for the Greetings menu. Press 7 or R to record the greeting. Follow the prompts to review or re-record the greeting but remember to press 9 or X to store it!

The cause may be down to the phone or the voicemail application. To clear the phone’s app data:
Go to menu, and click on messages. At the bottom of the screen, it should say options. Click on options. You should see a list of options come up on the screen. Click on the one that says voicemail. When you click on voicemail, it should call the automated voicemail. You should hear an automated voice giving you options. When you hear personal options, press the number that the automated voice said was for personal options. The automated voice should then list some personal options. When you hear `greetings,` press the number that the automated voice said was for greetings. The automated voice should list some greetings. When you hear `personal greetings,` press the number that the voice said was for personal greetings. Follow the automated directions from there.