You can see your Vendor ID: General: At Home Screen Press alt + aA + h simultaneously. Storm: At home screen press and hold escape, then press the left top corner, right top corner, left top corner and right top corner of the screen. Blackberry 8100: ALT+RACE/Select Options->Advanced Options-> Applications, ALT+CAPS+H. Here is the list of Vendor ID: 1 RIM Engineering 100 T-Mobile US 101 AWS 102 Cingular Wireless (AT&T)