Has anyone any experience with bad handsfree quality:
I have an RT5 and sound is often noisy, sometimes it is echoing, sometimes in the end of the line my voice is not understandable.
From my wife's car I have replaced the RT5 with an RNEG and RNEG works fine.
(I have also tried my phone in another car at the dealership (a P508 and a P5008, both with RT6) and there was no problem at all)

Any suggestion - please...