Number of Rings before going to voicemail.

[Anonymous]

Can anyone tell me which combination of * numbers and # to use to extend the number of rings on my HTC Wildfire beyond 3 before  it goes to Voicemail. I tried various things but get the following message "Connection problem or invalid MMI code".

[jonsie · Accepted solution]

How to Lengthen Ringtime on any O2 Mobile - O2 Community