Vodafone says that data for June and July 2006 shows that Passport customers are paying around 50% less per minute for their voice roaming calls against the year-ago average. The average cost of a voice roaming call for these users is now below E0.45 (30p) per minute. 10m Vodafone million subscribers – more than a third of all its roaming customers – have taken Passport up since its launch in May 2005.