I just added the 25$ global data package to my plan and I have an Iphone 5. I will be in Europe (France, Monaco, Italy, Spain and also on a cruise ship) for 2 weeks and want to be sure the phone works. I can't get a clear answer as to what to do to make sure it will work once I get there. Some places tell me I need to dial something before I leave. Others say to do nothing here but turn off phone and when I arrive I will get a text. It would be great to get a clear answer as to what to do. Thanks to anyone who answers this and can help.