--- a/mobile/android/base/java/org/mozilla/gecko/BrowserApp.java
+++ b/mobile/android/base/java/org/mozilla/gecko/BrowserApp.java
@@ -1367,16 +1367,18 @@ public class BrowserApp extends GeckoApp
                 final SharedPreferences sharedPrefs = GeckoSharedPrefs.forProfileName(BrowserApp.this, profile.getName());
                 FileCleanupController.startIfReady(BrowserApp.this, sharedPrefs, profile.getDir().getAbsolutePath());
             }
         });
 
         for (final BrowserAppDelegate delegate : delegates) {
             delegate.onStart(this);
         }
+
+        MmaDelegate.track(MmaDelegate.RESUMED_FROM_BACKGROUND);
     }
 
     @Override
     public void onStop() {
         super.onStop();
         if (mIsAbortingAppLaunch) {
             return;
         }

--- a/mobile/android/base/java/org/mozilla/gecko/mma/MmaDelegate.java
+++ b/mobile/android/base/java/org/mozilla/gecko/mma/MmaDelegate.java
@@ -42,16 +42,17 @@ public class MmaDelegate {
     public static final String CLEARED_PRIVATE_DATA = "E_Cleared_Private_Data";
     public static final String SAVED_BOOKMARK = "E_Saved_Bookmark";
     public static final String OPENED_BOOKMARK = "E_Opened_Bookmark";
     public static final String INTERACT_WITH_SEARCH_URL_AREA = "E_Interact_With_Search_URL_Area";
     public static final String SCREENSHOT = "E_Screenshot";
     public static final String SAVED_LOGIN_AND_PASSWORD = "E_Saved_Login_And_Password";
     public static final String LAUNCH_BUT_NOT_DEFAULT_BROWSER = "E_Launch_But_Not_Default_Browser";
     public static final String LAUNCH_BROWSER = "E_Launch_Browser";
+    public static final String RESUMED_FROM_BACKGROUND = "E_Resumed_From_Background";
     public static final String NEW_TAB = "E_Opened_New_Tab";
     public static final String DISMISS_ONBOARDING = "E_Dismiss_Onboarding";
 
 
     public static final String USER_ATT_FOCUS_INSTALLED = "Focus Installed";
     public static final String USER_ATT_KLAR_INSTALLED = "Klar Installed";
     public static final String USER_ATT_POCKET_INSTALLED = "Pocket Installed";
     public static final String USER_ATT_DEFAULT_BROWSER = "Default Browser";