This should be an easy question but everyone including Verizon gives me a different answer. My wife is traveling to the south of France next week on business and wants to be able to use her Verizon iphone 5 if she needs to. What exactly does it take to do this? Just turn it on? Does she need some type of international plan before she can use it? She might only use once or twice but would like to be able to receive call's from home or work (USA) if needed. Anyone with an easy explanation of how this all works? Also, how about roaming. Does she need to keep it on and if so does that alone cost money? Thanks for any help you might have.