So after getting the 4G & WiFi ceased I was able to put in the code to
get the 30 seconds ring delay before transferring to voicemail. When I
checked that it was set it came up with confirming only for voice calls
(which fine) , normally it confirms ...
O2 told me that they cannot disable 4G/WiFi, it has to be done from my
phone? I have tried this on the phone but no difference. It does take
other MMI commands just not the 30 second delay command.