I've always just bought an international phone card when I've traveled but decided to take my own phone this one time and try one of these sim cards. Well, let me tell you. I made about 45 minuets of calls during a total of 3 weeks and my overall bill was $176. So, if you do the math, I could have spend about $13 American dollars on a 10 euro calling card with 400 minuets and called from the hotel or any public phone....or $176 for less than an hour of calls. This was certainly the worse choice I made for my trip and I advise you to NOT buy this! Amazon.com, please consider taking this off your list of products...it is very misleading and cost consumers way too much money after it is purchased.