--- a/mobile/android/base/java/org/mozilla/gecko/BrowserApp.java
+++ b/mobile/android/base/java/org/mozilla/gecko/BrowserApp.java
@@ -2605,16 +2605,17 @@ public class BrowserApp extends GeckoApp
 
                 super.onActivityResult(requestCode, resultCode, data);
         }
     }
 
     private void showFirstrunPager() {
         if (Experiments.isInExperimentLocal(getContext(), Experiments.ONBOARDING3_A)) {
             Telemetry.startUISession(TelemetryContract.Session.EXPERIMENT, Experiments.ONBOARDING3_A);
+            Telemetry.sendUIEvent(TelemetryContract.Event.SHOW, TelemetryContract.Method.NONE, "onboarding");
             GeckoSharedPrefs.forProfile(getContext()).edit().putString(Experiments.PREF_ONBOARDING_VERSION, Experiments.ONBOARDING3_A).apply();
             Telemetry.stopUISession(TelemetryContract.Session.EXPERIMENT, Experiments.ONBOARDING3_A);
             return;
         }
 
         if (mFirstrunAnimationContainer == null) {
             final ViewStub firstrunPagerStub = (ViewStub) findViewById(R.id.firstrun_pager_stub);
             mFirstrunAnimationContainer = (FirstrunAnimationContainer) firstrunPagerStub.inflate();

--- a/mobile/android/base/java/org/mozilla/gecko/firstrun/FirstrunPagerConfig.java
+++ b/mobile/android/base/java/org/mozilla/gecko/firstrun/FirstrunPagerConfig.java
@@ -29,22 +29,24 @@ public class FirstrunPagerConfig {
 
         if (Experiments.isInExperimentLocal(context, Experiments.ONBOARDING3_B)) {
             panels.add(SimplePanelConfigs.urlbarPanelConfig);
             panels.add(SimplePanelConfigs.bookmarksPanelConfig);
             panels.add(SimplePanelConfigs.dataPanelConfig);
             panels.add(SimplePanelConfigs.syncPanelConfig);
             panels.add(SimplePanelConfigs.signInPanelConfig);
             Telemetry.startUISession(TelemetryContract.Session.EXPERIMENT, Experiments.ONBOARDING3_B);
+            Telemetry.sendUIEvent(TelemetryContract.Event.SHOW, TelemetryContract.Method.NONE, "onboarding");
             GeckoSharedPrefs.forProfile(context).edit().putString(Experiments.PREF_ONBOARDING_VERSION, Experiments.ONBOARDING3_B).apply();
         } else if (Experiments.isInExperimentLocal(context, Experiments.ONBOARDING3_C)) {
             panels.add(SimplePanelConfigs.tabqueuePanelConfig);
             panels.add(SimplePanelConfigs.readerviewPanelConfig);
             panels.add(SimplePanelConfigs.accountPanelConfig);
             Telemetry.startUISession(TelemetryContract.Session.EXPERIMENT, Experiments.ONBOARDING3_C);
+            Telemetry.sendUIEvent(TelemetryContract.Event.SHOW, TelemetryContract.Method.NONE, "onboarding");
             GeckoSharedPrefs.forProfile(context).edit().putString(Experiments.PREF_ONBOARDING_VERSION, Experiments.ONBOARDING3_C).apply();
         } else {
             Log.e(LOGTAG, "Not in an experiment!");
             panels.add(SimplePanelConfigs.signInPanelConfig);
         }
         return panels;
     }