If you are developing on Windows Phone 8 and trying to communicate with a Bluetooth device using a StreamSocket these UUID's might come in handy:ServiceDiscoveryServerServiceClassID= '{00001000-0000-1000-8000-00805F9B34FB}';BrowseGroupDescriptorServiceClassID = '{00001001-0000-1000-8000-00805F9B34FB}';PublicBrowseGroupServiceClass = '{00001002-0000-1000-8000-00805F9B34FB}';SerialPortServiceClass = '{00001101-0000-1000-8000-00805F9B34FB}';LANAccessUsingPPPServiceClass = '{00001102-0000-1000-8000-00805F9B34FB}';DialupNetworkingServiceClas =...