I found, that from the last software upgrade the headset is simply not usable for making calls:
- the problem is only in call mode
- the volume up/down is not working
- the microphone is too quiet
Before the software upgrade everything was fine ...
Does anybody has idea what can be wrong with the phone?
Thanks for the advices.
The software was the newest version, i've tried the soft reset, but it did not helped.
After that I've made a recovery -> to the time before the last software upgrade, and the probllem disappeared.
So, I'll check this forum, when MS (or Nokia) will solve the problem, and after that I' going to make the firmware upgrade again.