View your Access voicemail messages for information on how to better manage your voicemail. Check out Troubleshoot Voicemail for solutions to some of the most frequent voicemail issues.
The process is very simple. You'll just have to click the green phone icon, the same place you make calls, and navigate to the voicemail screen. On the voicemail screen, you'll see a greetings option on the top left.

If your carrier supports the iPhone voicemail feature, you can retrieve and listen to your voicemail right from within the “Phone” app and call your contacts back by simply tapping their messages. That type of functionality is pretty neat and useful, because it saves you actual time. If not supported by your carrier, you will not be able to see the visual overview of your voicemail inbox and use any of the related features. Tapping the “Voicemail” tab in your “Phone” app will simply call the number associated with your voicemail box. So let’s get going with creating our custom voicemail greeting on iPhone! How to record your own Voicemail on iPhone Phone → Voicemail → Greeting → Custom → Record → Save
Mike, If you are looking to get it completely disabled, unfortunately, this cannot be done at the moment. To disable the service temporarily, please call us or send us an email at [email protected] since there is a verification process involved so we won’t be able to resolve it here.