Just a quick nod to this thread, which I found linked to on the Vodafone eforum when my own question got merged into an older thread on the subject! https://talk3g.co.uk/showthread.p...on-an-iPhone-4

eforum thread is here and Vodafone are remaining completely tight-lipped, much to the aggravation of the thread participants. http://forum.vodafone.co.uk/t5/Netwo...Hz/td-p/644515