diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallAudioRouter.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallAudioRouter.kt
index dff3df1b..817ecb48 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallAudioRouter.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallAudioRouter.kt
@@ -630,8 +630,8 @@ class CallAudioRouter {
 
     private fun startBluetoothSco() {
         scoOwned = true
-        am.startBluetoothSco()
         scoFlagOwned = true
+        am.startBluetoothSco()
         am.isBluetoothScoOn = true
     }
 
diff --git a/tools/chatgui-android/router-tests/src/main/kotlin/android/media/HostAudio.kt b/tools/chatgui-android/router-tests/src/main/kotlin/android/media/HostAudio.kt
index e632dd1e..c494d8f4 100644
--- a/tools/chatgui-android/router-tests/src/main/kotlin/android/media/HostAudio.kt
+++ b/tools/chatgui-android/router-tests/src/main/kotlin/android/media/HostAudio.kt
@@ -63,7 +63,7 @@ class AudioManager {
         check(name !in failures) { "audio operation failed: $name" }
     }
     var isBluetoothScoOn = false
-        set(value) { operation("sco=$value"); field = value }
+        set(value) { operation("sco=$value"); field = value; operation("sco after=$value") }
     var isSpeakerphoneOn = false
         set(value) { operation("speaker=$value"); field = value }
     var mode = 0
@@ -106,9 +106,12 @@ class AudioManager {
         operation("select=${device.id}")
         if (!acceptCommunicationDevice || device !in availableCommunicationDevices) return false
         communicationDevice = device
+        operation("select after=${device.id}")
         return true
     }
-    fun clearCommunicationDevice() { operation("clear"); communicationDevice = null }
-    fun startBluetoothSco() { operation("start sco") }
-    fun stopBluetoothSco() { operation("stop sco") }
+    var legacyScoStarted = false
+        private set
+    fun clearCommunicationDevice() { operation("clear"); communicationDevice = null; operation("clear after") }
+    fun startBluetoothSco() { operation("start sco"); legacyScoStarted = true; operation("start sco after") }
+    fun stopBluetoothSco() { operation("stop sco"); legacyScoStarted = false; operation("stop sco after") }
 }