http://forum.vodafone.co.uk/index.ph...dpost&p=230904

As has been said before, we don't have any info on whether you can use VoIP with an unlimited data bundle - it's possible, but it can use a LOT of data very quickly - this is why you can use it through the Broadband on your phone though

http://forum.vodafone.co.uk/index.ph...dpost&p=231931

If you want to be able to make Skype calls over the 3G network however, we do require you to add the "Via the phone" broadband bundle to your price-plan. This gives you a 5GB data limit, so we know you'll have enough allowance each month to keep up with the Skype's data-hungry demands. By comparison, our normal flexi plans and data bundles have a Fair Usage Policy of 500MB before we start to consider your data usage to be higher than it should be. Skype would eat through that fairly quickly. Skype will not be available over our network without this bundle on your phone for that very reason.

http://forum.vodafone.co.uk/index.ph...dpost&p=189627

We don't havea data bundle that'll support and cover Skype for you I'm afraid - the reason for this is that Skype will try and get the best possible connection that it can, taking up more bandwidth and using a LOT more data - you'd use all of your data up very quickly this way