I will be living in Italy for 4 months starting in a couple of weeks and would like to use my iPhone there. AT&T's international plans seem way overpriced to me, and I have read about some people going to Vodfone stores and being able to get Vodfone SIM cards and use their prepaid plans on the iPhone. Has anyone done this or know anything about it? I have an iPhone 4S, so I'm not sure if the new size of SIM card in the iPhone will work with Vodfone or if this idea will work in general. Also, does the iPhone have to be jailbroken to do this? I do not want to jailbreak my iPhone. I also will be traveling throughout Europe--France, Spain, UK, Ireland, etc.--will this company work in other European countries? Any information about how this works--if it works with a 4S, what the Vodfone plans are, where to go to get the Vodfone SIM card and activate the plan, etc.--would be greatly appreciated. Thank you!