I just upgraded to SE D750i phone. I used to send SMS message from my PDA UX50 to my phone (fyi S700i) with no problem. Now with this new phone, I cannot.

The Bluetooth connection is there and after it displays sending 1 of 1 on the UX50; a couple of seconds later, it comes back with an error message:

Action Canceled due to unknown Phone Services error. (on the UX50)

No indication on the Phone that it attempts to make the outgoing connection.