trojan wrote:

can connect and accept / cancel calls
but

if I want to call, the connection is always lost.
I hear nothing and the presence and also not on the phone;
however, I have already tried calling someone first and then terminating sennheiser presence and this works perfectly


hope you guys can help

Go to the dial interface and dial "*#87#".
You can have a try. Or you can contact our professional after-sales directly.
After-sales email: support02@blackview.hk