I often use the N900 builtin FM transmitter to listen to music while in my car. The music stops playing when somebody calls me but I can't hear anything. The caller can hear me, but I can't hear him.

Last time this happened I switched back to the media player and switched off the FM transmitter and then back to the phone application and all was fine: I could hear the caller.

Does the FM transmitter really not switch off automatically when I pick up a call? Is this a bug? AFAIK this used to work in the past, maybe pre PR1.x.

Thanks for your advice.

i think its a bug.but its annoying,with my n97 i could normmalyhear the caller over my car radio.
but this didn't made the n97 to a good phone either.....

Its a bug u need to increase the volume of your N900 when you are called while fm transmitter is active,when you activate fm transmitter it mutes your call volume(some bug),,,just increase the sound u can hear the caller......

You could try using FM Carkit, then the Transmitter won't need to deactivate.