new file mode 100644
--- /dev/null
+++ b/mobile/android/Makefile.in
@@ -0,0 +1,11 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+include $(topsrcdir)/config/rules.mk
+include $(topsrcdir)/testing/testsuite-targets.mk
+
+package-mobile-tests:
+	$(MAKE) stage-mochitest DIST_BIN=$(DEPTH)/$(DIST)/bin/xulrunnerg
+	$(NSINSTALL) -D $(DIST)/$(PKG_PATH)
+	@(cd $(PKG_STAGE) && tar $(TAR_CREATE_FLAGS) - *) | bzip2 -f > $(DIST)/$(PKG_PATH)$(TEST_PACKAGE)

--- a/mobile/android/app/build.gradle
+++ b/mobile/android/app/build.gradle
@@ -9,16 +9,18 @@ dexcount {
     format = "tree"
 }
 
 android {
     compileSdkVersion project.ext.compileSdkVersion
     buildToolsVersion project.ext.buildToolsVersion
 
     defaultConfig {
+        multiDexEnabled true
+
         targetSdkVersion project.ext.targetSdkVersion
         minSdkVersion project.ext.minSdkVersion
         manifestPlaceholders = project.ext.manifestPlaceholders
 
         applicationId mozconfig.substs.ANDROID_PACKAGE_NAME
         testApplicationId 'org.mozilla.roboexample.test'
         testInstrumentationRunner 'org.mozilla.gecko.FennecInstrumentationTestRunner'
         // Used by Robolectric based tests; see TestRunner.
@@ -226,16 +228,18 @@ android {
             // we have tests that start test servers and the bound ports
             // collide.  We'll fix this soon to have much faster test cycles.
             maxParallelForks 1
         }
     }
 }
 
 dependencies {
+    compile 'com.android.support:multidex:1.0.1'
+
     compile "com.android.support:support-v4:${mozconfig.substs.ANDROID_SUPPORT_LIBRARY_VERSION}"
     compile "com.android.support:appcompat-v7:${mozconfig.substs.ANDROID_SUPPORT_LIBRARY_VERSION}"
     compile "com.android.support:cardview-v7:${mozconfig.substs.ANDROID_SUPPORT_LIBRARY_VERSION}"
     compile "com.android.support:recyclerview-v7:${mozconfig.substs.ANDROID_SUPPORT_LIBRARY_VERSION}"
     compile "com.android.support:design:${mozconfig.substs.ANDROID_SUPPORT_LIBRARY_VERSION}"
     compile "com.android.support:customtabs:${mozconfig.substs.ANDROID_SUPPORT_LIBRARY_VERSION}"
 
     if (mozconfig.substs.MOZ_NATIVE_DEVICES) {

--- a/mobile/android/base/java/org/mozilla/gecko/BrowserApp.java
+++ b/mobile/android/base/java/org/mozilla/gecko/BrowserApp.java
@@ -205,17 +205,17 @@ public class BrowserApp extends GeckoApp
     private static final String LOGTAG = "GeckoBrowserApp";
 
     private static final int TABS_ANIMATION_DURATION = 450;
 
     // Intent String extras used to specify custom Switchboard configurations.
     private static final String INTENT_KEY_SWITCHBOARD_SERVER = "switchboard-server";
 
     // TODO: Replace with kinto endpoint.
-    private static final String SWITCHBOARD_SERVER = "https://firefox.settings.services.mozilla.com/v1/buckets/fennec/collections/experiments/records";
+    private static final String SWITCHBOARD_SERVER = "https://firefox.settings.services.mozilla.com/v1/buckets/fennec-preview/collections/experiments/records";
 
     private static final String STATE_ABOUT_HOME_TOP_PADDING = "abouthome_top_padding";
 
     private static final String BROWSER_SEARCH_TAG = "browser_search";
 
     // Request ID for startActivityForResult.
     public static final int ACTIVITY_REQUEST_PREFERENCES = 1001;
     private static final int ACTIVITY_REQUEST_TAB_QUEUE = 2001;

--- a/mobile/android/base/java/org/mozilla/gecko/GeckoApplication.java
+++ b/mobile/android/base/java/org/mozilla/gecko/GeckoApplication.java
@@ -14,16 +14,17 @@ import android.content.res.Configuration
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.net.Uri;
 import android.os.Environment;
 import android.os.Process;
 import android.os.SystemClock;
 import android.provider.MediaStore;
 import android.support.design.widget.Snackbar;
+//import android.support.multidex.MultiDex;
 import android.text.TextUtils;
 import android.util.Base64;
 import android.util.Log;
 
 import com.squareup.leakcanary.LeakCanary;
 import com.squareup.leakcanary.RefWatcher;
 
 import org.mozilla.gecko.annotation.WrapForJNI;
@@ -361,16 +362,23 @@ public class GeckoApplication extends Ap
                 }
             });
         }
 
         GeckoAccessibility.setAccessibilityManagerListeners(this);
 
         AudioFocusAgent.getInstance().attachToContext(this);
     }
+    @Override
+    protected void attachBaseContext(Context base) {
+        super.attachBaseContext(base);
+//        MultiDex.install(this);
+    }
+
+
 
     private class EventListener implements BundleEventListener
     {
         private void onProfileCreate(final String name, final String path) {
             // Add everything when we're done loading the distribution.
             final Context context = GeckoApplication.this;
             final GeckoProfile profile = GeckoProfile.get(context, name);
             final Distribution distribution = Distribution.getInstance(context);

new file mode 100644
--- /dev/null
+++ b/mobile/android/thirdparty/com/leanplum/views/Test.java
@@ -0,0 +1,11 @@
+package com.leanplum.views;
+
+/**
+ * Created by nechen on 10/27/17.
+ */
+
+public class Test {
+    public static void main(String[] a){
+
+    }
+}