[header] How to turn off voicemail [title] Access your voicemail settings. [step] Some phones offer an option to turn off your voicemail via the settings. The particular type of voicemail settings you'll have to access will depend on the type of phone and service you're using. 
Access your options list, and select the tab that relates to voicemail. Virtually all phones will have some options tab relating to the voicemail utility; it's just a matter of finding out whether the phone offers an ability to deactivate the voicemail.