diff --git a/app/metrics.yaml b/app/metrics.yaml
index 2c9163ba4..98cf7473a 100644
--- a/app/metrics.yaml
+++ b/app/metrics.yaml
@@ -8,6 +8,36 @@ no_lint:
   - CATEGORY_GENERIC
 
 events:
+  app_opened_all_startup:
+    type: event
+    description: |
+      A user opened the app to the HomeActivity. The HomeActivity
+      encompasses the home screen, browser screen, settings screen,
+      collections and other screens in the nav_graph.
+      This differs from the app_opened probe because it measures all
+      startups, not just cold startup. Note: There is a short gap
+      between the time application goes into background and the time
+      android reports the application going into the background.
+      Note: This metric does not cover the following cases:
+      Case # 1 -> a). open a link(for example, gmail) with in-app
+      Browser (metric report custom_tab startup) b). press home button
+      c). open gmail again (which brings us back to in app browser).
+      Step c will not report startup metric. Case # 2 -> a). open fenix
+      b). press home button c). launch fenix through app switcher/recent
+      apps. step c will not report startup type.
+    extra_keys:
+      source:
+        description: |
+          The method used to open Fenix. Possible values are `app_icon`,
+          `custom_tab`, `link` or `unknown`
+    bugs:
+      - https://github.com/mozilla-mobile/fenix/issues/11830
+    data_reviews:
+      - https://github.com/mozilla-mobile/fenix/pull/12114#pullrequestreview-445245341
+    notification_emails:
+      - esmyth@mozilla.com
+      - perf-android-fe@mozilla.com
+    expires: "2020-12-01"
   app_received_intent:
     type: event
     description: |
diff --git a/app/src/main/java/org/mozilla/fenix/HomeActivity.kt b/app/src/main/java/org/mozilla/fenix/HomeActivity.kt
index ed1a811c9..a932c4089 100644
--- a/app/src/main/java/org/mozilla/fenix/HomeActivity.kt
+++ b/app/src/main/java/org/mozilla/fenix/HomeActivity.kt
@@ -201,7 +201,7 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity {
             // record on cold startup
             safeIntent
                 ?.let(::getIntentAllSource)
-                ?.also { components.analytics.metrics.track(Event.AppRecievedIntent(it)) }
+                ?.also { components.analytics.metrics.track(Event.AppReceivedIntent(it)) }
         }
         supportActionBar?.hide()
 
@@ -217,9 +217,15 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity {
 
         captureSnapshotTelemetryMetrics()
 
+        setAppAllStartTelemetry(intent.toSafeIntent())
+
         StartupTimeline.onActivityCreateEndHome(this) // DO NOT MOVE ANYTHING BELOW HERE.
     }
 
+    protected open fun setAppAllStartTelemetry(safeIntent: SafeIntent) {
+        components.appAllSourceStartTelemetry.receivedIntentInHomeActivity(safeIntent)
+    }
+
     @CallSuper
     override fun onResume() {
         super.onResume()
@@ -281,14 +287,15 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity {
                 ?.also { it.dismissAllowingStateLoss() }
         }
 
-        // If there is a warm or hot startup, onNewIntent method is always called first.
         // Note: This does not work in case of an user sending an intent with ACTION_VIEW
         // for example, launch the application, and than use adb to send an intent with
         // ACTION_VIEW to open a link. In this case, we will get multiple telemetry events.
         intent
             .toSafeIntent()
             .let(::getIntentAllSource)
-            ?.also { components.analytics.metrics.track(Event.AppRecievedIntent(it)) }
+            ?.also { components.analytics.metrics.track(Event.AppReceivedIntent(it)) }
+
+        setAppAllStartTelemetry(intent.toSafeIntent())
     }
 
     /**
@@ -412,11 +419,11 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity {
         }
     }
 
-    protected open fun getIntentAllSource(intent: SafeIntent): Event.AppRecievedIntent.Source? {
+    protected open fun getIntentAllSource(intent: SafeIntent): Event.AppReceivedIntent.Source? {
         return when {
-            intent.isLauncherIntent -> Event.AppRecievedIntent.Source.APP_ICON
-            intent.action == Intent.ACTION_VIEW -> Event.AppRecievedIntent.Source.LINK
-            else -> Event.AppRecievedIntent.Source.UNKNOWN
+            intent.isLauncherIntent -> Event.AppReceivedIntent.Source.APP_ICON
+            intent.action == Intent.ACTION_VIEW -> Event.AppReceivedIntent.Source.LINK
+            else -> Event.AppReceivedIntent.Source.UNKNOWN
         }
     }
 
diff --git a/app/src/main/java/org/mozilla/fenix/components/Components.kt b/app/src/main/java/org/mozilla/fenix/components/Components.kt
index eec2fccfe..296ae433d 100644
--- a/app/src/main/java/org/mozilla/fenix/components/Components.kt
+++ b/app/src/main/java/org/mozilla/fenix/components/Components.kt
@@ -18,6 +18,7 @@ import mozilla.components.lib.publicsuffixlist.PublicSuffixList
 import mozilla.components.support.migration.state.MigrationStore
 import org.mozilla.fenix.BuildConfig
 import org.mozilla.fenix.HomeActivity
+import org.mozilla.fenix.components.metrics.AppAllSourceStartTelemetry
 import org.mozilla.fenix.utils.ClipboardHandler
 import org.mozilla.fenix.utils.Mockable
 import org.mozilla.fenix.utils.Settings
@@ -81,6 +82,8 @@ class Components(private val context: Context) {
         }
     }
 
+    val appAllSourceStartTelemetry by lazy { AppAllSourceStartTelemetry(analytics.metrics) }
+
     @Suppress("MagicNumber")
     val addonUpdater by lazy {
         DefaultAddonUpdater(context, AddonUpdater.Frequency(12, TimeUnit.HOURS))
diff --git a/app/src/main/java/org/mozilla/fenix/components/metrics/AppAllSourceStartTelemetry.kt b/app/src/main/java/org/mozilla/fenix/components/metrics/AppAllSourceStartTelemetry.kt
new file mode 100644
index 000000000..ce730d4f1
--- /dev/null
+++ b/app/src/main/java/org/mozilla/fenix/components/metrics/AppAllSourceStartTelemetry.kt
@@ -0,0 +1,59 @@
+/* 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/. */
+
+package org.mozilla.fenix.components.metrics
+
+import android.content.Intent
+import androidx.annotation.VisibleForTesting
+import androidx.annotation.VisibleForTesting.PRIVATE
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleObserver
+import androidx.lifecycle.OnLifecycleEvent
+import androidx.lifecycle.ProcessLifecycleOwner
+import mozilla.components.support.utils.SafeIntent
+
+/**
+ * Tracks how the application was opened through [Event.AppOpenedAllSourceStartup].
+ * We only considered to be "opened" if it received an intent and the app was in the background.
+ */
+class AppAllSourceStartTelemetry(private val metrics: MetricController) : LifecycleObserver {
+
+    // default value is true to capture the first launch of the application
+    private var wasApplicationInBackground = true
+
+    init {
+        ProcessLifecycleOwner.get().lifecycle.addObserver(this)
+    }
+
+    fun receivedIntentInExternalAppBrowserActivity(safeIntent: SafeIntent) {
+        setAppOpenedAllSourceFromIntent(safeIntent, true)
+    }
+
+    fun receivedIntentInHomeActivity(safeIntent: SafeIntent) {
+        setAppOpenedAllSourceFromIntent(safeIntent, false)
+    }
+
+    private fun setAppOpenedAllSourceFromIntent(intent: SafeIntent, isExternalAppBrowserActivity: Boolean) {
+        if (!wasApplicationInBackground) {
+            return
+        }
+
+        val source = when {
+            isExternalAppBrowserActivity -> Event.AppOpenedAllSourceStartup.Source.CUSTOM_TAB
+            intent.isLauncherIntent -> Event.AppOpenedAllSourceStartup.Source.APP_ICON
+            intent.action == Intent.ACTION_VIEW -> Event.AppOpenedAllSourceStartup.Source.LINK
+            else -> Event.AppOpenedAllSourceStartup.Source.UNKNOWN
+        }
+
+        metrics.track(Event.AppOpenedAllSourceStartup(source))
+
+        wasApplicationInBackground = false
+    }
+
+    @OnLifecycleEvent(Lifecycle.Event.ON_STOP)
+    @VisibleForTesting(otherwise = PRIVATE)
+    fun onApplicationOnStop() {
+        wasApplicationInBackground = true
+    }
+}
diff --git a/app/src/main/java/org/mozilla/fenix/components/metrics/GleanMetricsService.kt b/app/src/main/java/org/mozilla/fenix/components/metrics/GleanMetricsService.kt
index 4bf89abbd..0892f4e8d 100644
--- a/app/src/main/java/org/mozilla/fenix/components/metrics/GleanMetricsService.kt
+++ b/app/src/main/java/org/mozilla/fenix/components/metrics/GleanMetricsService.kt
@@ -98,10 +98,14 @@ private val Event.wrapper: EventWrapper<*>?
             { Events.appOpened.record(it) },
             { Events.appOpenedKeys.valueOf(it) }
         )
-        is Event.AppRecievedIntent -> EventWrapper(
+        is Event.AppReceivedIntent -> EventWrapper(
             { Events.appReceivedIntent.record(it) },
             { Events.appReceivedIntentKeys.valueOf(it) }
         )
+        is Event.AppOpenedAllSourceStartup -> EventWrapper(
+            { Events.appOpenedAllStartup.record(it) },
+            { Events.appOpenedAllStartupKeys.valueOf(it) }
+        )
         is Event.SearchBarTapped -> EventWrapper(
             { Events.searchBarTapped.record(it) },
             { Events.searchBarTappedKeys.valueOf(it) }
diff --git a/app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt b/app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt
index 22ec2e328..a175f0627 100644
--- a/app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt
+++ b/app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt
@@ -312,11 +312,19 @@ sealed class Event {
             get() = hashMapOf(Events.appOpenedKeys.source to source.name)
     }
 
-    data class AppRecievedIntent(val source: Source) : Event() {
+    data class AppReceivedIntent(val source: Source) : Event() {
+
         enum class Source { APP_ICON, LINK, CUSTOM_TAB, UNKNOWN }
 
-        override val extras: Map<Events.appReceivedIntentKeys, String>?
-            get() = hashMapOf(Events.appReceivedIntentKeys.source to source.name)
+        override val extras: Map<Events.appOpenedAllStartupKeys, String>?
+            get() = hashMapOf(Events.appOpenedAllStartupKeys.source to source.name)
+    }
+
+    data class AppOpenedAllSourceStartup(val source: Source) : Event() {
+        enum class Source { APP_ICON, LINK, CUSTOM_TAB, UNKNOWN }
+
+        override val extras: Map<Events.appOpenedAllStartupKeys, String>?
+            get() = hashMapOf(Events.appOpenedAllStartupKeys.source to source.name)
     }
 
     data class CollectionSaveButtonPressed(val fromScreen: String) : Event() {
diff --git a/app/src/main/java/org/mozilla/fenix/customtabs/ExternalAppBrowserActivity.kt b/app/src/main/java/org/mozilla/fenix/customtabs/ExternalAppBrowserActivity.kt
index 2914f7326..0e079b512 100644
--- a/app/src/main/java/org/mozilla/fenix/customtabs/ExternalAppBrowserActivity.kt
+++ b/app/src/main/java/org/mozilla/fenix/customtabs/ExternalAppBrowserActivity.kt
@@ -41,10 +41,14 @@ open class ExternalAppBrowserActivity : HomeActivity() {
 
     final override fun getIntentSource(intent: SafeIntent) = Event.OpenedApp.Source.CUSTOM_TAB
 
-    final override fun getIntentAllSource(intent: SafeIntent) = Event.AppRecievedIntent.Source.CUSTOM_TAB
+    final override fun getIntentAllSource(intent: SafeIntent) = Event.AppReceivedIntent.Source.CUSTOM_TAB
 
     final override fun getIntentSessionId(intent: SafeIntent) = intent.getSessionId()
 
+    override fun setAppAllStartTelemetry(safeIntent: SafeIntent) {
+        components.appAllSourceStartTelemetry.receivedIntentInExternalAppBrowserActivity(safeIntent)
+    }
+
     override fun getNavDirections(
         from: BrowserDirection,
         customTabSessionId: String?
diff --git a/app/src/test/java/org/mozilla/fenix/components/metrics/AppAllSourceStartTelemetryTest.kt b/app/src/test/java/org/mozilla/fenix/components/metrics/AppAllSourceStartTelemetryTest.kt
new file mode 100644
index 000000000..f411ae029
--- /dev/null
+++ b/app/src/test/java/org/mozilla/fenix/components/metrics/AppAllSourceStartTelemetryTest.kt
@@ -0,0 +1,95 @@
+/* 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/. */
+
+package org.mozilla.fenix.components.metrics
+
+import android.content.Intent
+import io.mockk.MockKAnnotations
+import io.mockk.every
+import io.mockk.impl.annotations.RelaxedMockK
+import io.mockk.verify
+import mozilla.components.support.utils.toSafeIntent
+import org.junit.Before
+import org.junit.Test
+
+class AppAllSourceStartTelemetryTest {
+
+    @RelaxedMockK
+    private lateinit var metricController: MetricController
+
+    @RelaxedMockK
+    private lateinit var intent: Intent
+
+    private lateinit var appAllSourceStartTelemetry: AppAllSourceStartTelemetry
+
+    @Before
+    fun setup() {
+        MockKAnnotations.init(this)
+        appAllSourceStartTelemetry = AppAllSourceStartTelemetry(metricController)
+    }
+
+    @Test
+    fun `WHEN a main launcher intent is received in HomeActivity THEN an app start metric is recorded from app_icon`() {
+
+        every { intent.action } returns Intent.ACTION_MAIN
+        every { intent.categories.contains(Intent.CATEGORY_LAUNCHER) } returns true
+
+        appAllSourceStartTelemetry.receivedIntentInHomeActivity(intent.toSafeIntent())
+
+        val validSource = Event.AppOpenedAllSourceStartup.Source.APP_ICON
+        verify(exactly = 1) { metricController.track(Event.AppOpenedAllSourceStartup(validSource)) }
+    }
+
+    @Test
+    fun `WHEN a VIEW intent is received in HomeActivity THEN an app start metric is recorded from link`() {
+        every { intent.action } returns Intent.ACTION_VIEW
+
+        appAllSourceStartTelemetry.receivedIntentInHomeActivity(intent.toSafeIntent())
+
+        val validSource = Event.AppOpenedAllSourceStartup.Source.LINK
+        verify(exactly = 1) { metricController.track(Event.AppOpenedAllSourceStartup(validSource)) }
+    }
+
+    @Test
+    fun `WHEN a intent is received in ExternalAppBrowserActivity THEN an app start metric is recorded from custom_tab`() {
+        val intent = Intent()
+
+        appAllSourceStartTelemetry.receivedIntentInExternalAppBrowserActivity(intent.toSafeIntent())
+
+        val validSource = Event.AppOpenedAllSourceStartup.Source.CUSTOM_TAB
+        verify(exactly = 1) { metricController.track(Event.AppOpenedAllSourceStartup(validSource)) }
+    }
+
+    @Test
+    fun `GIVEN an app is in the foreground WHEN an intent is received THEN no startup metric is recorded`() {
+        appAllSourceStartTelemetry.receivedIntentInHomeActivity(intent.toSafeIntent())
+
+        appAllSourceStartTelemetry.receivedIntentInHomeActivity(intent.toSafeIntent())
+
+        verify(exactly = 1) { metricController.track(any()) }
+    }
+
+    @Test
+    fun `WHEN application goes in background and comes foreground, THEN an app start metric is recorded`() {
+        // first startup
+        appAllSourceStartTelemetry.receivedIntentInHomeActivity(intent.toSafeIntent())
+
+        // mock application going in the background
+        appAllSourceStartTelemetry.onApplicationOnStop()
+
+        appAllSourceStartTelemetry.receivedIntentInHomeActivity(intent.toSafeIntent())
+
+        verify(exactly = 2) { metricController.track(any()) }
+    }
+
+    @Test
+    fun `WHEN an intent received in HomeActivity is not launcher or does not have VIEW action, THEN an app start is recorded from unknown`() {
+        every { intent.action } returns Intent.ACTION_MAIN
+
+        appAllSourceStartTelemetry.receivedIntentInHomeActivity(intent.toSafeIntent())
+
+        val validSource = Event.AppOpenedAllSourceStartup.Source.UNKNOWN
+        verify(exactly = 1) { metricController.track(Event.AppOpenedAllSourceStartup(validSource)) }
+    }
+}
diff --git a/docs/metrics.md b/docs/metrics.md
index 68ee68636..bc7162c1f 100644
--- a/docs/metrics.md
+++ b/docs/metrics.md
@@ -100,6 +100,7 @@ The following metrics are added to the ping:
 | download_notification.try_again |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user tapped on try again when a download fails in the download notification  |[1](https://github.com/mozilla-mobile/fenix/pull/6554)||2020-10-01 | |
 | error_page.visited_error |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user encountered an error page  |[1](https://github.com/mozilla-mobile/fenix/pull/2491#issuecomment-492414486)|<ul><li>error_type: The error type of the error page encountered</li></ul>|2020-10-01 | |
 | events.app_opened |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user opened the app (from cold start, to the homescreen or browser)  |[1](https://github.com/mozilla-mobile/fenix/pull/1067#issuecomment-474598673)|<ul><li>source: The method used to open Fenix. Possible values are: `app_icon`, `custom_tab` or `link` </li></ul>|2020-10-01 | |
+| events.app_opened_all_startup |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user opened the app to the HomeActivity. The HomeActivity encompasses the home screen, browser screen, settings screen, collections and other screens in the nav_graph. This differs from the app_opened probe because it measures all startups, not just cold startup. Note: There is a short gap between the time application goes into background and the time android reports the application going into the background. Note: This metric does not cover the following cases: Case # 1 -> a). open a link(for example, gmail) with in-app Browser (metric report custom_tab startup) b). press home button c). open gmail again (which brings us back to in app browser). Step c will not report startup metric. Case # 2 -> a). open fenix b). press home button c). launch fenix through app switcher/recent apps. step c will not report startup type.  |[1](https://github.com/mozilla-mobile/fenix/pull/12114#pullrequestreview-445245341)|<ul><li>source: The method used to open Fenix. Possible values are `app_icon`, `custom_tab`, `link` or `unknown` </li></ul>|2020-12-01 | |
 | events.app_received_intent |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |The system received an Intent for the HomeActivity. An intent is received an external entity wants to the app to display content. Intents can be received when the app is closed – at which point the app will be opened – or when the app is already opened – at which point the already open app will make changes such as loading a url. This can be used loosely as a heuristic for when the user requested to open the app. The HomeActivity encompasses the home screen and browser screen but may include other screens. This differs from the app_opened probe because it measures all startups, not just cold startup.  |[1](https://github.com/mozilla-mobile/fenix/pull/11940/)|<ul><li>source: The method used to open Fenix. Possible values are `app_icon`, `custom_tab`, `link` or `unknown` </li></ul>|2020-12-01 | |
 | events.browser_menu_action |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A browser menu item was tapped  |[1](https://github.com/mozilla-mobile/fenix/pull/1214#issue-264756708), [2](https://github.com/mozilla-mobile/fenix/pull/5098#issuecomment-529658996), [3](https://github.com/mozilla-mobile/fenix/pull/6310)|<ul><li>item: A string containing the name of the item the user tapped. These items include:    Settings, Help, Desktop Site toggle on/off, Find in Page,   New Tab, Private Tab, Share, Report Site Issue, Back/Forward button,   Reload Button, Quit, Reader Mode On, Reader Mode Off, Open In app,   Add To Top Sites, Add-ons Manager, Bookmarks, History </li></ul>|2020-10-01 | |
 | events.entered_url |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user entered a url  |[1](https://github.com/mozilla-mobile/fenix/pull/1067#issuecomment-474598673)|<ul><li>autocomplete: A boolean that tells us whether the URL was autofilled by an Autocomplete suggestion </li></ul>|2020-10-01 | |