On the absolute off chance that someone knows how to achive this...

I am not on vodafone. I am on 3

For 3, give up?

of course that totally contradicts the examples where you don't put your mobile number in, but your voicemail number - e.g. 123

If so its so dark that its completely invisible

Its the usual story of 'keep the customer in the dark except for stuff that makes us money'

And technical support that knows f*ck all about the product they are selling plus a million different internet pages all telling you this fixes it in a million different ways - none of which actually work and half of which will need a factory reset to recover from. :-)

Welcome to the wide wide world of consumer products.

In the mid 90s I went into a bookshop that had a very very good computer book section and paid £55 for a book on SUN solaris, because it had 4 lines on one page that told you exactly what to type to enable the SUN SPARC machine to actually talk to a printer.

I don't believe we ever used the manual beyond that - and if i'd had a smart phone back then I would have photoed the page.

As I have already said And for 3 network it's 123

Well, it seems that users are stuck with a max of 30 seconds.

cheeky...