I checked with HTC and they tell me that the Desire does not support voice activated dialling.
Does anyone know whether there is an APP that can achieve this?
Voice activated dialling - with bluetooth
created on May 12, 2010 1:34:57 PM — modified on Sep 26, 2011 12:04:20 PM by moderator
RE: Voice activated dialling - with bluetooth
created on May 12, 2010 4:34:31 PM
That website was the best result that I found regarding the issue. They listed some possible fixes.
The website above list a headset that looks to be approved for the HTC Desire, and also mentions voice activated dialing in the specifications. Hope that helps.