I am a O2 iPhone user. I am on the £55 package. Im going to NY at christmas so phone O2 to find out about international charges....The guy told me that if i use wi-fi in the US then O2 will charge me £7.50 per MB. Did anyone know this was the case? Can someone explain why O@ charge for me to use a wi-fi service when im not actually using any O2 services?