--- a/mobile/android/base/java/org/mozilla/gecko/LauncherActivity.java
+++ b/mobile/android/base/java/org/mozilla/gecko/LauncherActivity.java
@@ -7,30 +7,31 @@ package org.mozilla.gecko;
 
 import android.app.Activity;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.customtabs.CustomTabsIntent;
 
 import org.mozilla.gecko.customtabs.CustomTabsActivity;
 import org.mozilla.gecko.db.BrowserContract;
+import org.mozilla.gecko.preferences.GeckoPreferences;
 import org.mozilla.gecko.tabqueue.TabQueueHelper;
 import org.mozilla.gecko.tabqueue.TabQueueService;
 
 /**
  * Activity that receives incoming Intents and dispatches them to the appropriate activities (e.g. browser, custom tabs, web app).
  */
 public class LauncherActivity extends Activity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         GeckoAppShell.ensureCrashHandling();
 
-        if (AppConstants.MOZ_ANDROID_CUSTOM_TABS && isCustomTabsIntent()) {
+        if (AppConstants.MOZ_ANDROID_CUSTOM_TABS && isCustomTabsIntent() && isCustomTabsEnabled()) {
             dispatchCustomTabsIntent();
         } else if (isViewIntentWithURL()) {
             dispatchViewIntent();
         } else {
             dispatchNormalIntent();
         }
 
         finish();
@@ -79,9 +80,13 @@ public class LauncherActivity extends Ac
         return Intent.ACTION_VIEW.equals(intent.getAction())
                 && intent.getDataString() != null;
     }
 
     private boolean isCustomTabsIntent() {
         return isViewIntentWithURL()
                 && getIntent().hasExtra(CustomTabsIntent.EXTRA_SESSION);
     }
+
+    private boolean isCustomTabsEnabled() {
+        return GeckoSharedPrefs.forApp(this).getBoolean(GeckoPreferences.PREFS_CUSTOM_TABS, false);
+    }
 }

--- a/mobile/android/base/java/org/mozilla/gecko/preferences/GeckoPreferences.java
+++ b/mobile/android/base/java/org/mozilla/gecko/preferences/GeckoPreferences.java
@@ -157,16 +157,17 @@ OnSharedPreferenceChangeListener
     public static final String PREFS_HISTORY_SAVED_SEARCH = NON_PREF_PREFIX + "search.search_history.enabled";
     private static final String PREFS_FAQ_LINK = NON_PREF_PREFIX + "faq.link";
     private static final String PREFS_FEEDBACK_LINK = NON_PREF_PREFIX + "feedback.link";
     public static final String PREFS_NOTIFICATIONS_CONTENT = NON_PREF_PREFIX + "notifications.content";
     public static final String PREFS_NOTIFICATIONS_CONTENT_LEARN_MORE = NON_PREF_PREFIX + "notifications.content.learn_more";
     public static final String PREFS_NOTIFICATIONS_WHATS_NEW = NON_PREF_PREFIX + "notifications.whats_new";
     public static final String PREFS_APP_UPDATE_LAST_BUILD_ID = "app.update.last_build_id";
     public static final String PREFS_READ_PARTNER_CUSTOMIZATIONS_PROVIDER = NON_PREF_PREFIX + "distribution.read_partner_customizations_provider";
+    public static final String PREFS_CUSTOM_TABS = NON_PREF_PREFIX + "customtabs";
 
     private static final String ACTION_STUMBLER_UPLOAD_PREF = AppConstants.ANDROID_PACKAGE_NAME + ".STUMBLER_PREF";
 
 
     // This isn't a Gecko pref, even if it looks like one.
     private static final String PREFS_BROWSER_LOCALE = "locale";
 
     public static final String PREFS_RESTORE_SESSION = NON_PREF_PREFIX + "restoreSession3";
@@ -874,16 +875,20 @@ OnSharedPreferenceChangeListener
                     }
                 } else if (PREFS_NOTIFICATIONS_CONTENT.equals(key) ||
                         PREFS_NOTIFICATIONS_CONTENT_LEARN_MORE.equals(key)) {
                     if (!FeedService.isInExperiment(this)) {
                         preferences.removePreference(pref);
                         i--;
                         continue;
                     }
+                } else if (PREFS_CUSTOM_TABS.equals(key) && !AppConstants.MOZ_ANDROID_CUSTOM_TABS) {
+                    preferences.removePreference(pref);
+                    i--;
+                    continue;
                 }
 
                 // Some Preference UI elements are not actually preferences,
                 // but they require a key to work correctly. For example,
                 // "Clear private data" requires a key for its state to be
                 // saved when the orientation changes. It uses the
                 // "android.not_a_preference.privacy.clear" key - which doesn't
                 // exist in Gecko - to satisfy this requirement.

--- a/mobile/android/base/locales/en-US/android_strings.dtd
+++ b/mobile/android/base/locales/en-US/android_strings.dtd
@@ -267,16 +267,22 @@
 
 <!ENTITY pref_tracking_protection_enabled "Enabled">
 <!ENTITY pref_tracking_protection_enabled_pb "Enabled in Private Browsing">
 <!ENTITY pref_tracking_protection_disabled "Disabled">
 
 <!ENTITY pref_whats_new_notification "What\'s new in &brandShortName;">
 <!ENTITY pref_whats_new_notification_summary "Learn about new features after an update">
 
+<!-- Custom Tabs is an Android API for allowing third-party apps to open URLs in a customized UI.
+     Instead of switching to the browser it appears as if the user stays in the third-party app.
+     For more see: https://developer.chrome.com/multidevice/android/customtabs -->
+<!ENTITY pref_custom_tabs "Custom Tabs">
+<!ENTITY pref_custom_tabs_summary "Allow third-party apps to open URLs with a customized look and feel. ">
+
 <!ENTITY tracking_protection_prompt_title "Now with Tracking Protection">
 <!ENTITY tracking_protection_prompt_text "Actively block tracking elements so you don\'t have to worry.">
 <!ENTITY tracking_protection_prompt_tip_text "Visit Privacy settings to learn more">
 <!ENTITY tracking_protection_prompt_action_button "Got it!">
 
 <!ENTITY tab_queue_toast_message3 "Tab saved in &brandShortName;">
 <!ENTITY tab_queue_toast_action "Open now">
 <!ENTITY tab_queue_prompt_title "Opening multiple links?">

--- a/mobile/android/base/resources/xml/preferences_advanced.xml
+++ b/mobile/android/base/resources/xml/preferences_advanced.xml
@@ -33,16 +33,21 @@
                     android:persistent="true" />
 
     <ListPreference android:key="browser.menu.showCharacterEncoding"
                     android:title="@string/pref_char_encoding"
                     android:entries="@array/pref_char_encoding_entries"
                     android:entryValues="@array/pref_char_encoding_values"
                     android:persistent="false" />
 
+    <SwitchPreference android:key="android.not_a_preference.customtabs"
+                      android:title="@string/pref_custom_tabs"
+                      android:summary="@string/pref_custom_tabs_summary"
+                      android:defaultValue="false" />
+
     <PreferenceCategory android:title="@string/pref_category_data_saver">
 
         <ListPreference android:key="browser.image_blocking"
                         android:title="@string/pref_tap_to_load_images_title2"
                         android:entries="@array/pref_browser_image_blocking_entries"
                         android:entryValues="@array/pref_browser_image_blocking_values"
                         android:persistent="false" />
 

--- a/mobile/android/base/strings.xml.in
+++ b/mobile/android/base/strings.xml.in
@@ -229,16 +229,19 @@
 
   <string name="pref_tracking_protection_enabled">&pref_tracking_protection_enabled;</string>
   <string name="pref_tracking_protection_enabled_pb">&pref_tracking_protection_enabled_pb;</string>
   <string name="pref_tracking_protection_disabled">&pref_tracking_protection_disabled;</string>
 
   <string name="pref_whats_new_notification">&pref_whats_new_notification;</string>
   <string name="pref_whats_new_notification_summary">&pref_whats_new_notification_summary;</string>
 
+  <string name="pref_custom_tabs">&pref_custom_tabs;</string>
+  <string name="pref_custom_tabs_summary">&pref_custom_tabs_summary;</string>
+
   <string name="pref_char_encoding">&pref_char_encoding;</string>
   <string name="pref_char_encoding_on">&pref_char_encoding_on;</string>
   <string name="pref_char_encoding_off">&pref_char_encoding_off;</string>
   <string name="pref_clear_private_data_now">&pref_clear_private_data2;</string>
   <string name="pref_clear_private_data_now_tablet">&pref_clear_private_data_now_tablet;</string>
   <string name="pref_clear_on_exit_title">&pref_clear_on_exit_title3;</string>
   <string name="pref_clear_on_exit_summary2">&pref_clear_on_exit_summary2;</string>
   <string name="pref_clear_on_exit_dialog_title">&pref_clear_on_exit_dialog_title;</string>