I just got a Sony Ericsson Z525a.
It pairs fine.
Right after pairing, if outside-call comes in, it works fine.
I can hear the caller thru speakers and also I can speak with hands-free.
Then when I tried to dial out, phone keeps trasfering sound to the phone, so HFL doesn't work.
And then if outside-call comes in, it keeps trasfering to the phone again.
What's wrong with it??

 

I've got a Z520a and haven't noticed anything odd, but then I don't get very many incoming calls. But I don't have problems at all with outgoing, even several in a row.

 

Are you voice dialing or dialing using the phone?

 

I am dialing thru voice command, but phone keeps transferring sound to the phone.
I emailed Acura support and they are saying Z520a is tested but not Z525a, so no big help there.