The Jez McKinley Wiki

To change O2 voicemail settings

• Seconds before going to voicemail - **61*901*11*NN# then SEND in the dialler of your phone - NN is number of seconds (5 second increments, max 30)
• 1760 turns off voicemail
• 1750 turns it on

To change Vodafone voicemail settings

• Seconds before going to voicemail - **61*121*11*NN# then SEND in the dialler of your phone - NN is number of seconds (5 second increments, max 30)