If you will be traveling internationally it only makes sense to call your wireless provider to see if your device will work properly over seas. DO NOT ASSUME IT WILL. I hate when you customers think that everything will be fine and then when you get your bill its really high for international travel. I think its funny how we as a company will pitty you and credit your account for YOUR mistake even though you did sign a contract for 2 years stating that YOU are financially repsonsible for your wireless services. Yes, we provide the service to you however its up to you to pay the amount owed.