I have an Android 2.0 app that successfully sends messages to another device via Bluetooth SPP, using a slightly modifed version of BluetoothChat. I only had to change the UUID to make the Chat example work. Here is the puzzle: My app successfully and consistently connects to one of two supposedly identical devices. However, it consistently fails to connect to the other one, giving a Service Discovery Failed message. Yet, a similar program running on a Windows Mobile device can connect to either of the two devices. What could possibly be causing the Android program to fail to connect to one of the two devices while successfully connecting to the other, especially since the WM program can connect to either one? Note that I manufacture the two devices and they have identical hardware and software. The program on the WM devices uses a Windows system process for making the connection and so unfortunately I don't have access to the actual code that they use to make the connection.
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