To check the Microphone access state (whether an app has permission to use the microphone) on a Fairphone 4 running LineageOS 23.2 (Android 13-based), you can use ADB (Android Debug Bridge) to query the permission status. Here's how:

Steps to Check Mic Access State via ADB

1. Enable USB Debugging

• On your Fairphone 4, go to Settings > About phone > Tap "Build number" 7 times to enable Developer options.
• Go to Developer options and enable USB debugging.
• Connect your phone to your computer via USB and authorize the debugging connection.

2. Use ADB to Check Mic Permission

• Open a terminal/command prompt on your computer and run:

  bash

  Copy

  adb shell dumpsys package | grep -A 10 "PERMISSION_MICROPHONE"

  This will list all apps and their microphone permission status.

• Alternatively, to check for a specific app (replace com.example.app with the app's package name):

  bash

  Copy

  adb shell dumpsys package com.example.app | grep -i "MICROPHONE"

  Look for lines like:

  text

  Copy

  grantedPermissions={... android.permission.RECORD_AUDIO ...}

  If RECORD_AUDIO is listed under grantedPermissions, the app has mic access.

3. Check Runtime Permissions (Android 6+)

• For runtime permissions (user-granted), use:

  bash

  Copy

  adb shell dumpsys permission | grep -i "RECORD_AUDIO"

  This will show which apps have been granted the RECORD_AUDIO permission at runtime.

• For a specific app:

  bash

  Copy

  adb shell dumpsys package com.example.app | grep -i "RECORD_AUDIO"

4. Check if Mic is Being Used

• To see if the microphone is actively in use (e.g., by an app):
  bash

  Copy

  adb shell dumpsys media.audio_flinger | grep -i "recording"

  This will show if any app is currently recording audio.

5. Check App Ops (Fine-Grained Control)

• LineageOS may use App Ops to manage permissions. To check:
  bash

  Copy

  adb shell appops query OP_RECORD_AUDIO

  This lists all apps and their microphone access state (e.g., allow, deny, default).

Example Outputs

• If an app has mic access:
  text

  Copy

  Package com.example.app:
    Permission android.permission.RECORD_AUDIO: granted

• If denied:
  text

  Copy

  Package com.example.app:
    Permission android.permission.RECORD_AUDIO: denied

Notes

• LineageOS 23.2 is based on Android 13, so these commands should work as expected.
• If you need to revoke mic access for an app, use:
  bash

  Copy

  adb shell pm revoke com.example.app android.permission.RECORD_AUDIO

• To grant it again:
  bash

  Copy

  adb shell pm grant com.example.app android.permission.RECORD_AUDIO