diff --git a/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt b/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
index 895ac6ec..ace31117 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
@@ -1147,13 +1147,15 @@ class MainActivity : AppCompatActivity() {
         when (item.itemId) {
 
             R.id.micIcon -> {
-                BaresipService.isMicMuted = !BaresipService.isMicMuted
-                if (BaresipService.isMicMuted) {
-                    item.setIcon(R.drawable.mic_off)
-                    Api.calls_mute(true)
-                } else {
-                    item.setIcon(R.drawable.mic_on)
-                    Api.calls_mute(false)
+                if (Call.call("connected") != null) {
+                    BaresipService.isMicMuted = !BaresipService.isMicMuted
+                    if (BaresipService.isMicMuted) {
+                        item.setIcon(R.drawable.mic_off)
+                        Api.calls_mute(true)
+                    } else {
+                        item.setIcon(R.drawable.mic_on)
+                        Api.calls_mute(false)
+                    }
                 }
             }
 
@@ -1672,6 +1674,10 @@ class MainActivity : AppCompatActivity() {
             rejectButton.visibility = View.INVISIBLE
             callControl.visibility = View.INVISIBLE
             dialpadButton.isEnabled = true
+            if (BaresipService.isMicMuted) {
+                BaresipService.isMicMuted = false
+                micIcon!!.setIcon(R.drawable.mic_on)
+            }
         } else {
             swipeRefresh.isEnabled = false
             val call = Call.uaCalls(ua, "")[0]