diff --git a/webrtc/examples/androidapp/res/values/strings.xml b/webrtc/examples/androidapp/res/values/strings.xml
index 5b414a45ce..d8e8bc3340 100644
--- a/webrtc/examples/androidapp/res/values/strings.xml
+++ b/webrtc/examples/androidapp/res/values/strings.xml
@@ -138,6 +138,10 @@
     <string name="pref_disable_built_in_ns_default">false</string>
     <string name="pref_built_in_ns_not_available">Hardware NS is not available</string>
 
+    <string name="pref_enable_level_control_key">enable_level_control_preference</string>
+    <string name="pref_enable_level_control_title">Enable level control.</string>
+    <string name="pref_enable_level_control_default">false</string>
+
     <string name="pref_miscsettings_key">misc_settings_key</string>
     <string name="pref_miscsettings_title">Miscellaneous settings.</string>
 
diff --git a/webrtc/examples/androidapp/res/xml/preferences.xml b/webrtc/examples/androidapp/res/xml/preferences.xml
index 7b199c2e45..a752b1cc9d 100644
--- a/webrtc/examples/androidapp/res/xml/preferences.xml
+++ b/webrtc/examples/androidapp/res/xml/preferences.xml
@@ -135,6 +135,11 @@
             android:title="@string/pref_disable_built_in_ns_title"
             android:dialogTitle="@string/pref_disable_built_in_ns_dlg"
             android:defaultValue="@string/pref_disable_built_in_ns_default" />
+
+        <CheckBoxPreference
+            android:key="@string/pref_enable_level_control_key"
+            android:title="@string/pref_enable_level_control_title"
+            android:defaultValue="@string/pref_enable_level_control_default" />
     </PreferenceCategory>
 
     <PreferenceCategory
diff --git a/webrtc/examples/androidapp/src/org/appspot/apprtc/CallActivity.java b/webrtc/examples/androidapp/src/org/appspot/apprtc/CallActivity.java
index 3a1fe88dc0..afa7e44aad 100644
--- a/webrtc/examples/androidapp/src/org/appspot/apprtc/CallActivity.java
+++ b/webrtc/examples/androidapp/src/org/appspot/apprtc/CallActivity.java
@@ -88,6 +88,8 @@ public class CallActivity extends Activity
       "org.appspot.apprtc.DISABLE_BUILT_IN_AGC";
   public static final String EXTRA_DISABLE_BUILT_IN_NS =
       "org.appspot.apprtc.DISABLE_BUILT_IN_NS";
+    public static final String EXTRA_ENABLE_LEVEL_CONTROL =
+      "org.appspot.apprtc.ENABLE_LEVEL_CONTROL";
   public static final String EXTRA_DISPLAY_HUD =
       "org.appspot.apprtc.DISPLAY_HUD";
   public static final String EXTRA_TRACING = "org.appspot.apprtc.TRACING";
@@ -253,7 +255,8 @@ public class CallActivity extends Activity
         intent.getBooleanExtra(EXTRA_OPENSLES_ENABLED, false),
         intent.getBooleanExtra(EXTRA_DISABLE_BUILT_IN_AEC, false),
         intent.getBooleanExtra(EXTRA_DISABLE_BUILT_IN_AGC, false),
-        intent.getBooleanExtra(EXTRA_DISABLE_BUILT_IN_NS, false));
+        intent.getBooleanExtra(EXTRA_DISABLE_BUILT_IN_NS, false),
+        intent.getBooleanExtra(EXTRA_ENABLE_LEVEL_CONTROL, false));
     commandLineRun = intent.getBooleanExtra(EXTRA_CMDLINE, false);
     runTimeMs = intent.getIntExtra(EXTRA_RUNTIME, 0);
 
diff --git a/webrtc/examples/androidapp/src/org/appspot/apprtc/ConnectActivity.java b/webrtc/examples/androidapp/src/org/appspot/apprtc/ConnectActivity.java
index 3bd5e1937e..b1ff2e8de2 100644
--- a/webrtc/examples/androidapp/src/org/appspot/apprtc/ConnectActivity.java
+++ b/webrtc/examples/androidapp/src/org/appspot/apprtc/ConnectActivity.java
@@ -73,6 +73,7 @@ public class ConnectActivity extends Activity {
   private String keyprefDisableBuiltInAec;
   private String keyprefDisableBuiltInAgc;
   private String keyprefDisableBuiltInNs;
+  private String keyprefEnableLevelControl;
   private String keyprefDisplayHud;
   private String keyprefTracing;
   private String keyprefRoomServerUrl;
@@ -107,6 +108,7 @@ public class ConnectActivity extends Activity {
     keyprefDisableBuiltInAec = getString(R.string.pref_disable_built_in_aec_key);
     keyprefDisableBuiltInAgc = getString(R.string.pref_disable_built_in_agc_key);
     keyprefDisableBuiltInNs = getString(R.string.pref_disable_built_in_ns_key);
+    keyprefEnableLevelControl = getString(R.string.pref_enable_level_control_key);
     keyprefDisplayHud = getString(R.string.pref_displayhud_key);
     keyprefTracing = getString(R.string.pref_tracing_key);
     keyprefRoomServerUrl = getString(R.string.pref_room_server_url_key);
@@ -313,6 +315,11 @@ public class ConnectActivity extends Activity {
         keyprefDisableBuiltInNs,
         Boolean.valueOf(getString(R.string.pref_disable_built_in_ns_default)));
 
+    // Check Enable level control.
+    boolean enableLevelControl = sharedPref.getBoolean(
+        keyprefEnableLevelControl,
+        Boolean.valueOf(getString(R.string.pref_enable_level_control_key)));
+
     // Get video resolution from settings.
     int videoWidth = 0;
     int videoHeight = 0;
@@ -401,6 +408,7 @@ public class ConnectActivity extends Activity {
       intent.putExtra(CallActivity.EXTRA_DISABLE_BUILT_IN_AEC, disableBuiltInAEC);
       intent.putExtra(CallActivity.EXTRA_DISABLE_BUILT_IN_AGC, disableBuiltInAGC);
       intent.putExtra(CallActivity.EXTRA_DISABLE_BUILT_IN_NS, disableBuiltInNS);
+      intent.putExtra(CallActivity.EXTRA_ENABLE_LEVEL_CONTROL, enableLevelControl);
       intent.putExtra(CallActivity.EXTRA_AUDIO_BITRATE, audioStartBitrate);
       intent.putExtra(CallActivity.EXTRA_AUDIOCODEC, audioCodec);
       intent.putExtra(CallActivity.EXTRA_DISPLAY_HUD, displayHud);
diff --git a/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java b/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
index c18153f035..479b1140d1 100644
--- a/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
+++ b/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
@@ -80,6 +80,7 @@ public class PeerConnectionClient {
   private static final String AUDIO_AUTO_GAIN_CONTROL_CONSTRAINT= "googAutoGainControl";
   private static final String AUDIO_HIGH_PASS_FILTER_CONSTRAINT  = "googHighpassFilter";
   private static final String AUDIO_NOISE_SUPPRESSION_CONSTRAINT = "googNoiseSuppression";
+  private static final String AUDIO_LEVEL_CONTROL_CONSTRAINT = "levelControl";
   private static final String MAX_VIDEO_WIDTH_CONSTRAINT = "maxWidth";
   private static final String MIN_VIDEO_WIDTH_CONSTRAINT = "minWidth";
   private static final String MAX_VIDEO_HEIGHT_CONSTRAINT = "maxHeight";
@@ -162,6 +163,7 @@ public class PeerConnectionClient {
     public final boolean disableBuiltInAEC;
     public final boolean disableBuiltInAGC;
     public final boolean disableBuiltInNS;
+    public final boolean enableLevelControl;
 
     public PeerConnectionParameters(
         boolean videoCallEnabled, boolean loopback, boolean tracing, boolean useCamera2,
@@ -169,7 +171,8 @@ public class PeerConnectionClient {
         int videoStartBitrate, String videoCodec, boolean videoCodecHwAcceleration,
         boolean captureToTexture, int audioStartBitrate, String audioCodec,
         boolean noAudioProcessing, boolean aecDump, boolean useOpenSLES,
-        boolean disableBuiltInAEC, boolean disableBuiltInAGC, boolean disableBuiltInNS) {
+        boolean disableBuiltInAEC, boolean disableBuiltInAGC, boolean disableBuiltInNS,
+        boolean enableLevelControl) {
       this.videoCallEnabled = videoCallEnabled;
       this.useCamera2 = useCamera2;
       this.loopback = loopback;
@@ -189,6 +192,7 @@ public class PeerConnectionClient {
       this.disableBuiltInAEC = disableBuiltInAEC;
       this.disableBuiltInAGC = disableBuiltInAGC;
       this.disableBuiltInNS = disableBuiltInNS;
+      this.enableLevelControl = enableLevelControl;
     }
   }
 
@@ -455,6 +459,11 @@ public class PeerConnectionClient {
       audioConstraints.mandatory.add(new MediaConstraints.KeyValuePair(
            AUDIO_NOISE_SUPPRESSION_CONSTRAINT , "false"));
     }
+    if (peerConnectionParameters.enableLevelControl) {
+      Log.d(TAG, "Enabling level control.");
+      audioConstraints.mandatory.add(new MediaConstraints.KeyValuePair(
+          AUDIO_LEVEL_CONTROL_CONSTRAINT, "true"));
+    }
     // Create SDP constraints.
     sdpMediaConstraints = new MediaConstraints();
     sdpMediaConstraints.mandatory.add(new MediaConstraints.KeyValuePair(
diff --git a/webrtc/examples/androidapp/src/org/appspot/apprtc/SettingsActivity.java b/webrtc/examples/androidapp/src/org/appspot/apprtc/SettingsActivity.java
index fa0d0c8885..63355f57a4 100644
--- a/webrtc/examples/androidapp/src/org/appspot/apprtc/SettingsActivity.java
+++ b/webrtc/examples/androidapp/src/org/appspot/apprtc/SettingsActivity.java
@@ -46,6 +46,7 @@ public class SettingsActivity extends Activity
   private String keyprefDisableBuiltInAEC;
   private String keyprefDisableBuiltInAGC;
   private String keyprefDisableBuiltInNS;
+  private String keyprefEnableLevelControl;
 
   private String keyPrefRoomServerUrl;
   private String keyPrefDisplayHud;
@@ -74,6 +75,7 @@ public class SettingsActivity extends Activity
     keyprefDisableBuiltInAEC = getString(R.string.pref_disable_built_in_aec_key);
     keyprefDisableBuiltInAGC = getString(R.string.pref_disable_built_in_agc_key);
     keyprefDisableBuiltInNS = getString(R.string.pref_disable_built_in_ns_key);
+    keyprefEnableLevelControl = getString(R.string.pref_enable_level_control_key);
 
     keyPrefRoomServerUrl = getString(R.string.pref_room_server_url_key);
     keyPrefDisplayHud = getString(R.string.pref_displayhud_key);
@@ -115,6 +117,7 @@ public class SettingsActivity extends Activity
     updateSummaryB(sharedPreferences, keyprefDisableBuiltInAEC);
     updateSummaryB(sharedPreferences, keyprefDisableBuiltInAGC);
     updateSummaryB(sharedPreferences, keyprefDisableBuiltInNS);
+    updateSummaryB(sharedPreferences, keyprefEnableLevelControl);
 
     updateSummary(sharedPreferences, keyPrefRoomServerUrl);
     updateSummaryB(sharedPreferences, keyPrefDisplayHud);
@@ -192,6 +195,7 @@ public class SettingsActivity extends Activity
         || key.equals(keyprefDisableBuiltInAEC)
         || key.equals(keyprefDisableBuiltInAGC)
         || key.equals(keyprefDisableBuiltInNS)
+        || key.equals(keyprefEnableLevelControl)
         || key.equals(keyPrefDisplayHud)) {
       updateSummaryB(sharedPreferences, key);
     }
diff --git a/webrtc/examples/androidtests/src/org/appspot/apprtc/test/PeerConnectionClientTest.java b/webrtc/examples/androidtests/src/org/appspot/apprtc/test/PeerConnectionClientTest.java
index a8b65c20d6..09815dedeb 100644
--- a/webrtc/examples/androidtests/src/org/appspot/apprtc/test/PeerConnectionClientTest.java
+++ b/webrtc/examples/androidtests/src/org/appspot/apprtc/test/PeerConnectionClientTest.java
@@ -285,7 +285,8 @@ public class PeerConnectionClientTest extends InstrumentationTestCase
             false /* useOpenSLES */,
             false /* disableBuiltInAEC */,
             false /* disableBuiltInAGC */,
-            false /* disableBuiltInNS */);
+            false /* disableBuiltInNS */,
+            false /* enableLevelControl */);
     return peerConnectionParameters;
   }
 
@@ -315,7 +316,8 @@ public class PeerConnectionClientTest extends InstrumentationTestCase
             false /* useOpenSLES */,
             false /* disableBuiltInAEC */,
             false /* disableBuiltInAGC */,
-            false /* disableBuiltInNS */);
+            false /* disableBuiltInNS */,
+            false /* enableLevelControl */);
     return peerConnectionParameters;
   }