My dtr bought the card for her trip to Europe last year. It kept asking for a code. We tried to get help from Worldsim. I called the manufacturer of her device who told us they do not lock their devices. Worldsim help was useless. Every person would tell her to put her card in an unlocked device which she did several times and the card didnt work. I contacted Worldsim at least five times. My dtr contacted Worldsim in every country she went to (11). Every time we started from square one with put it into an unlocked device. DO NOT BUY ANYTHING FROM THIS COMPANY!! I can recommend Skyroam whose product works everywhere. We are out about $120 for the card PLUS $150 that my dtr put on the card and can't use. AVOID THIS COMPANY IF YOU VALUE YOUR TIME AND MONEY!!!