Updated FAQ

FAQ.md

@@ -3086,11 +3086,18 @@ Veuillez [voir ici](http://jc.etiemble.free.fr/abc/index.php/trucs-astuces/confi
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 <a name="faq158"></a>
-**(158) Which camera / audio recorder do you recommend**
+**(158) Which camera / audio recorder do you recommend?**
+
+To take photos and to record audio a camera and an audio recorder app are needed.
+The following apps are open source cameras and audio recorders:
 
 * [Open Camera](https://play.google.com/store/apps/details?id=net.sourceforge.opencamera) ([F-Droid](https://f-droid.org/en/packages/net.sourceforge.opencamera/))
 * [Audio Recorder](https://play.google.com/store/apps/details?id=com.github.axet.audiorecorder) ([F-Droid](https://f-droid.org/packages/com.github.axet.audiorecorder/))
 
+To record voice notes, etc, the audio recorder needs to support
+[MediaStore.Audio.Media.RECORD_SOUND_ACTION](https://developer.android.com/reference/android/provider/MediaStore.Audio.Media#RECORD_SOUND_ACTION).
+Oddly, most audio recorders seem not to support this standard Android action.
+
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 ## Support