We just got a new 2007 Camry Hybrid with Bluetooth capabilities and so far have been unsuccessful at pairing my wife's Sony Ericsson Z525a phone with the car's bluetooth setup.
I've been searching the web and found that Letstalk.com lists the bluetooth phones that Toyota says they have tested so far with successful results.
The list is small (only Motorola RAZR V3) but hopefully this link will be helpful to others and as time goes on, others will be added to the list.
LetsTalk for Toyota
If anyone has had success with their Sony Ericsson Z525a, let me know.
Thx,
-XT