Mute navigation during phone call.
When making or taking phone calls using bluetooth, waze navigation prompts often interrupt me. The person on the other end of the line can't hear the prompt, but it means either I miss what they're saying, or my train of thought is interrupted mid-sentence.
It would be useful for the client to auto-mute during a phone call.
Maxym Mykhalchuk commented
Symbian 2.0 stable (and 2.1.99 beta) both have this feature already