I'm on my first trip in Europe with my iPhone. I've followed the threads here on APC and have turned off international roaming to avoid the big charges. I've been frustrated trying to use Truphone though. I've gotten it to place a call once but the quality was so poor it was unusable. At hotels with strong wi-fi signals the call hasn't gone through at all. In the lower left corner of my keypad it said for the first couple of days "your credit: unavailable". Now it says: "retrieving". I've tried their support but they seem hopelessly overwhelmed.... We are working hard at resolving these issues.....
Has anyone one else had any luck using truphone? Any troubleshooting ideas??