there are several issues detected. First of all it looks like phone does not send track name to connecting device though the ad2p connection. I have multimedia system in my car and all other android phones sent track name but not xperia 10. another issue is I bought fitnes watch that connecting to phone via Bluetooth. now i cant connect this whatch to my phone application doesnt see the device. from the other hand there is no problem when i use another phone. It sees whatch and can connect. Application that i mentioned is Comfit.
