is there any way to block the built-in microphone while not having a call on Jolla one, to fight surveillance. I tried to put a 3,5mm plug into the connector, but it did not mute the built-in mic, at least with the audio recorder when I tested. In some feature phones that does the trick. Is there some software settings that can disable the mic in conjunction with the physical plug in? Or is there some app that could do it like there is for Android phones?