Absolutely useless. Got my new shiny phone and rather excited. Put sim card in and all worked brilliantly. Waited for number to be ported. Once number ported all of a sudden don't even get 3G. Call customer service / technical team / complaints team numerous times who put me through a couple of fixes, only to find that when reception does work (its very intermittent mainly on E) ie not even 3G for a 4G contract. In addition someone at vadafone has changed my data setting so it cannot be used meaning that even when it is 3G or 4G I cannot use any app that uses data. Everything is very very complex when you talk to someone at the firm and takes numerous days to resolve. Im into day 10 of my new phone and will most probably cancel as I feel I am back on the early 2000's. Don't change to Vodafone and make the mistake I made!