SBH52 issue

[Yubuk]

I connected my XSP toSBH52, but when I make a call, it often transferred my voice from SBH52 to handset earpiece without my action when the call started about 15-20 seconds. What should I do?

[xdec]

I am experiencing exactly the same problem. I haven't found any other report of this issue so I guess it's related to the XperiaSP. It is really annoying because I have to keep my phone in my hand any time I am making a call...

It works fine when listening to music.

Any solutions are welcome!

[Yubuk]

I solved my problem.
I updated 4.3 (leak on xda) and Factory Reset.
I hope you will be Ok too