I travel internationally regularly and was excited when verizon came out with their Samsung world phone. I have to tell you after my first trip overseas and dealing with verizon trying to turn on the gsm capability was a joke. After hours of back and forth with their customer service (and remeber you are overseas so getting ahold of a competent customer service person at those hours wasn't the easiest) all I was able to do is place calls, but if anyone tried to call the phone the call would not go through. I just hope they have figured out the glitches. The actual switching from CDMA to GSM wasn't this streamline, easy thing to do.