diff --git a/app/src/main/kotlin/com/tutpro/baresip/AudioActivity.kt b/app/src/main/kotlin/com/tutpro/baresip/AudioActivity.kt
index edf1b250..40bcc035 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/AudioActivity.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/AudioActivity.kt
@@ -18,6 +18,7 @@ class AudioActivity : AppCompatActivity() {
     private lateinit var opusBitRate: EditText
     private lateinit var opusPacketLoss: EditText
     private lateinit var aec: CheckBox
+    private lateinit var speakerPhone: CheckBox
     private lateinit var audioDelay: EditText
 
     private var save = false
@@ -73,6 +74,9 @@ class AudioActivity : AppCompatActivity() {
             }
         }
 
+        speakerPhone = binding.SpeakerPhone
+        speakerPhone.isChecked = BaresipService.speakerPhone
+
         val modules = Config.variables("module")
 
         val audioModulesList = binding.AudioModulesList
@@ -175,6 +179,13 @@ class AudioActivity : AppCompatActivity() {
                     save = true
                 }
 
+                if (speakerPhone.isChecked != BaresipService.speakerPhone) {
+                    BaresipService.speakerPhone = speakerPhone.isChecked
+                    Config.replaceVariable("speaker_phone",
+                        if (BaresipService.speakerPhone) "yes" else "no")
+                    save = true
+                }
+
                 var id = 1001
                 for (module in audioModules) {
                     val box = findViewById<CheckBox>(id++)
@@ -287,6 +298,10 @@ class AudioActivity : AppCompatActivity() {
             Utils.alertView(this, getString(R.string.default_call_volume),
                     getString(R.string.default_call_volume_help))
         }
+        binding.SpeakerPhoneTitle.setOnClickListener {
+            Utils.alertView(this, getString(R.string.speaker_phone),
+                getString(R.string.speaker_phone_help))
+        }
         binding.AudioModulesTitle.setOnClickListener {
             Utils.alertView(this, getString(R.string.audio_modules_title),
                     getString(R.string.audio_modules_help))
diff --git a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
index 79f0aea7..7966ea4e 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
@@ -682,6 +682,8 @@ class BaresipService: Service() {
                             break
                         stopMediaPlayer()
                         setCallVolume()
+                        if (speakerPhone && !Utils.isSpeakerPhoneOn(am))
+                            Utils.toggleSpeakerPhone(ContextCompat.getMainExecutor(this), am)
                         proximitySensing(true)
                         return
                     }
@@ -728,22 +730,23 @@ class BaresipService: Service() {
                                 ua.account.missedCalls = true
                             }
                             return
+                        }
+                        Log.d(TAG, "Incoming call $uap/$callp/$peerUri")
+                        Call(callp, ua, peerUri, "in", "incoming", Utils.dtmfWatcher(callp)).add()
+                        if (speakerPhone && !Utils.isSpeakerPhoneOn(am))
+                            Utils.toggleSpeakerPhone(ContextCompat.getMainExecutor(this), am)
+                        if (ua.account.answerMode == Api.ANSWERMODE_MANUAL) {
+                            Log.d(TAG, "CurrentInterruptionFilter ${nm.currentInterruptionFilter}")
+                            if (nm.currentInterruptionFilter <= NotificationManager.INTERRUPTION_FILTER_ALL)
+                                startRinging()
                         } else {
-                            Log.d(TAG, "Incoming call $uap/$callp/$peerUri")
-                            Call(callp, ua, peerUri, "in", "incoming", Utils.dtmfWatcher(callp)).add()
-                            if (ua.account.answerMode == Api.ANSWERMODE_MANUAL) {
-                                Log.d(TAG, "CurrentInterruptionFilter ${nm.currentInterruptionFilter}")
-                                if (nm.currentInterruptionFilter <= NotificationManager.INTERRUPTION_FILTER_ALL)
-                                    startRinging()
-                            } else {
-                                val newIntent = Intent(this, MainActivity::class.java)
-                                newIntent.flags = Intent.FLAG_ACTIVITY_SINGLE_TOP or Intent.FLAG_ACTIVITY_CLEAR_TOP or
-                                        Intent.FLAG_ACTIVITY_NEW_TASK
-                                newIntent.putExtra("action", "call answer")
-                                newIntent.putExtra("callp", callp)
-                                startActivity(newIntent)
-                                return
-                            }
+                            val newIntent = Intent(this, MainActivity::class.java)
+                            newIntent.flags = Intent.FLAG_ACTIVITY_SINGLE_TOP or Intent.FLAG_ACTIVITY_CLEAR_TOP or
+                                    Intent.FLAG_ACTIVITY_NEW_TASK
+                            newIntent.putExtra("action", "call answer")
+                            newIntent.putExtra("callp", callp)
+                            startActivity(newIntent)
+                            return
                         }
                         if (!Utils.isVisible()) {
                             val piFlags = PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
@@ -1558,6 +1561,7 @@ class BaresipService: Service() {
         var isConfigInitialized = false
         var libraryLoaded = false
         var callVolume = 0
+        var speakerPhone = false
         var audioDelay = if (VERSION.SDK_INT < 31) 1500L else 500L
         var dynDns = false
         var filesPath = ""
diff --git a/app/src/main/kotlin/com/tutpro/baresip/Config.kt b/app/src/main/kotlin/com/tutpro/baresip/Config.kt
index afbc2e1d..e7a69980 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/Config.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/Config.kt
@@ -137,6 +137,14 @@ object Config {
             config = "${config}call_volume ${BaresipService.callVolume}\n"
         }
 
+        val speakerPhone = previousVariable("speaker_phone")
+        if (speakerPhone != "") {
+            config = "${config}speaker_phone $speakerPhone\n"
+            BaresipService.speakerPhone = speakerPhone == "yes"
+        } else {
+            config = "${config}speaker_phone no\n"
+        }
+
         val previousModules = previousVariables("module")
         for (module in AudioActivity.audioModules)
             if ("${module}.so" in previousModules)
diff --git a/app/src/main/res/layout/activity_audio.xml b/app/src/main/res/layout/activity_audio.xml
index 7a77564b..d5941e79 100644
--- a/app/src/main/res/layout/activity_audio.xml
+++ b/app/src/main/res/layout/activity_audio.xml
@@ -40,6 +40,31 @@
             </Spinner>
         </RelativeLayout>
 
+        <RelativeLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp" >
+            <TextView
+                android:id="@+id/SpeakerPhoneTitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_alignParentStart="true"
+                android:layout_centerVertical="true"
+                android:layout_toStartOf="@id/SpeakerPhone"
+                android:textSize="18sp"
+                android:text="@string/speaker_phone" >
+            </TextView>
+            <CheckBox
+                android:id="@+id/SpeakerPhone"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_alignParentEnd="true"
+                android:layout_centerVertical="true"
+                android:layout_gravity="end"
+                android:checked="false" >
+            </CheckBox>
+        </RelativeLayout>
+
         <RelativeLayout
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index bb2ea516..f22bf24c 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -356,6 +356,10 @@
     </string>
     <string name="audio">Audio</string>
     <string name="audio_settings">Audio-asetukset</string>
+    <string name="speaker_phone">Kaiutin</string>
+    <string name="speaker_phone_help">Jos merkitty, kaiutin kytketään sutomaattisesti päälle
+        kun puhelu alkaa.
+    </string>
     <string name="audio_modules_title">Audio-modulit</string>
     <string name="audio_modules_help">Merkittyjen modulien tarjoamat audio-koodekit ovat tilien
         käytettävissä.
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index cfdb3a22..090c5b5c 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -334,6 +334,9 @@
         Download folder.</string>
     <string name="audio">Audio</string>
     <string name="audio_settings">Audio Settings</string>
+    <string name="speaker_phone">Speaker Phone</string>
+    <string name="speaker_phone_help">If checked, speaker phone is turned automatically on
+        when call starts.</string>
     <string name="audio_modules_title">Audio Modules</string>
     <string name="audio_modules_help">Audio codecs provided by the checked modules are
         available for use by the accounts.</string>