Question about WiFi calls overseas. Reading the past few pages it seems you get charged calling over wifi, is this correct? If you use Skype when connected to a hotel's wifi to call a non-us number you still pay per minute? I assume this also applied when calling using data when roaming? Are there any voip apps that get around these charges? Not sure how t-mobile knows that certain data is a phone call? Especially when you're connected to wifi.