Giffgaff

Voice Mail Settings
To ACTIVATE Voicemail - Dial 1616

To DEACTIVATE Voicemail Dial - 1626

To CHECK Voicemail - Dial 443

To set your own Voicemail message dial 443 and follow the prompts.

Voicemail extend ring will set the number of rings before divert type in **61*443*10* and then the amount of seconds you want in increments of 5 secs maximum 30 followed by # then SEND