Hello, very simple question. I will be taking my unlocked iPhone abroad for the first time and will be using a local prepaid SIM card while on my trip. My question is about the nature of contacts on the phone. If I start saving the local phone numbers of people I will visit now, will they (and all of my current contacts) still be on my phone when I put in a foreign SIM? Or will a virgin SIM have an empty contact list? I'd hate to have to do it all twice.. If there is a setting where I can save everything onto the phone before pulling the SIM, please let me know. I also wonder if I'd have to enter the phone numbers with their full international code, but that would be less of a pain than adding them all again. Thanks!