And like the iPhone roll-out you have to have bought the device directly from Vodafone - <a href="http:&#x2F;&#x2F;www.vodafone.co.uk&#x2F;explore&#x2F;network&#x2F;network-improvements&#x2F;wi-fi-calling&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.vodafone.co.uk&#x2F;explore&#x2F;network&#x2F;network-improvemen...</a>