Hi, a friend gave me Blackberry Curve and inserted a Globe Roaming Simcard from the Philippines but I couldn't use the BBM part of it. I tried adding some friends pin but nothing happens, they invited me too but didn't work. I could use the wifi perfectly though. They said that I could use the BBM through wifi. I just don't know what else needs to be configured on my phone like service books, apn or whatsoever, please help me. I don't have a usb cable by the way.