How can I use a Bluetooth keyboard with my Android 4.0 phone?
Do you have any custom keyboards installed? I've found that when I pair the external Bluetooth keyboard (tried two models) the phone errors and reports you must change back to the standard Samsung IME keyboard before the it will type. You can manually change the input method with the hot key inside any writing app, but the message will reappear and convert the keyboard back to Samsung IME.