diff --git a/privacysandbox/ui/ui-client/src/androidTest/AndroidManifest.xml b/privacysandbox/ui/ui-client/src/androidTest/AndroidManifest.xml
index 869e25c..1f5dbd3 100644
--- a/privacysandbox/ui/ui-client/src/androidTest/AndroidManifest.xml
+++ b/privacysandbox/ui/ui-client/src/androidTest/AndroidManifest.xml
@@ -24,6 +24,8 @@
         android:name="androidx.privacysandbox.ui.client.test.UiLibActivity"
         android:configChanges="orientation|screenSize"
         android:exported="true"/>
+    <activity android:name=".SecondActivity"
+        android:exported="true"/>
     </application>
 
     <queries>
diff --git a/privacysandbox/ui/ui-client/src/androidTest/java/androidx/privacysandbox/ui/client/test/SandboxedSdkViewTest.kt b/privacysandbox/ui/ui-client/src/androidTest/java/androidx/privacysandbox/ui/client/test/SandboxedSdkViewTest.kt
index a14cd24..2ac83da 100644
--- a/privacysandbox/ui/ui-client/src/androidTest/java/androidx/privacysandbox/ui/client/test/SandboxedSdkViewTest.kt
+++ b/privacysandbox/ui/ui-client/src/androidTest/java/androidx/privacysandbox/ui/client/test/SandboxedSdkViewTest.kt
@@ -18,6 +18,7 @@
 
 import android.annotation.SuppressLint
 import android.content.Context
+import android.content.Intent
 import android.content.pm.ActivityInfo
 import android.content.res.Configuration
 import android.graphics.Rect
@@ -78,6 +79,7 @@
         const val SHORTEST_TIME_BETWEEN_SIGNALS_MS = 200
     }
 
+    private lateinit var uiDevice: UiDevice
     private lateinit var context: Context
     private lateinit var view: SandboxedSdkView
     private lateinit var layoutParams: LayoutParams
@@ -257,6 +259,7 @@
             testSandboxedUiAdapter = TestSandboxedUiAdapter()
             view.setAdapter(testSandboxedUiAdapter)
         }
+        uiDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())
     }
 
     @Test
@@ -405,18 +408,17 @@
     @Test
     fun onConfigurationChangedTest() {
         addViewToLayout()
-        val device = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())
         testSandboxedUiAdapter.assertSessionOpened()
         // newWindow() will be triggered by a window state change, even if the activity handles
         // orientation changes without recreating the activity.
-        device.performActionAndWait(
-            { device.setOrientationLeft() },
+        uiDevice.performActionAndWait(
+            { uiDevice.setOrientationLeft() },
             Until.newWindow(),
             UI_INTENSIVE_TIMEOUT
         )
         testSandboxedUiAdapter.assertSessionOpened()
-        device.performActionAndWait(
-            { device.setOrientationNatural() },
+        uiDevice.performActionAndWait(
+            { uiDevice.setOrientationNatural() },
             Until.newWindow(),
             UI_INTENSIVE_TIMEOUT
         )
@@ -798,6 +800,25 @@
             .isAtLeast(SHORTEST_TIME_BETWEEN_SIGNALS_MS)
     }
 
+    @Test
+    fun signalsSentWhenHostActivityStateChanges() {
+        addViewToLayoutAndWaitToBeActive()
+        val session = testSandboxedUiAdapter.testSession!!
+        session.runAndRetrieveNextUiChange {}
+        // Replace the first activity with a new activity. The onScreenGeometry should now be empty.
+        var sandboxedSdkViewUiInfo =
+            session.runAndRetrieveNextUiChange {
+                activityScenarioRule.scenario.onActivity {
+                    val intent = Intent(it, SecondActivity::class.java)
+                    it.startActivity(intent)
+                }
+            }
+        assertThat(sandboxedSdkViewUiInfo.onScreenGeometry.isEmpty).isTrue()
+        // Return to the first activity. The onScreenGeometry should now be non-empty.
+        sandboxedSdkViewUiInfo = session.runAndRetrieveNextUiChange { uiDevice.pressBack() }
+        assertThat(sandboxedSdkViewUiInfo.onScreenGeometry.isEmpty).isFalse()
+    }
+
     private fun addViewToLayout(waitToBeActive: Boolean = false, viewToAdd: View = view) {
         activityScenarioRule.withActivity {
             val mainLayout: LinearLayout = findViewById(R.id.mainlayout)
diff --git a/privacysandbox/ui/ui-client/src/androidTest/java/androidx/privacysandbox/ui/client/test/SecondActivity.kt b/privacysandbox/ui/ui-client/src/androidTest/java/androidx/privacysandbox/ui/client/test/SecondActivity.kt
new file mode 100644
index 0000000..4e0e81e
--- /dev/null
+++ b/privacysandbox/ui/ui-client/src/androidTest/java/androidx/privacysandbox/ui/client/test/SecondActivity.kt
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.privacysandbox.ui.client.test
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+
+class SecondActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_second)
+    }
+}
diff --git a/privacysandbox/ui/ui-client/src/androidTest/res/layout/activity_second.xml b/privacysandbox/ui/ui-client/src/androidTest/res/layout/activity_second.xml
new file mode 100644
index 0000000..5a64ff3
--- /dev/null
+++ b/privacysandbox/ui/ui-client/src/androidTest/res/layout/activity_second.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  Copyright 2024 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"/>
diff --git a/privacysandbox/ui/ui-client/src/main/java/androidx/privacysandbox/ui/client/view/SandboxedSdkView.kt b/privacysandbox/ui/ui-client/src/main/java/androidx/privacysandbox/ui/client/view/SandboxedSdkView.kt
index 39f555f..6113489 100644
--- a/privacysandbox/ui/ui-client/src/main/java/androidx/privacysandbox/ui/client/view/SandboxedSdkView.kt
+++ b/privacysandbox/ui/ui-client/src/main/java/androidx/privacysandbox/ui/client/view/SandboxedSdkView.kt
@@ -371,6 +371,7 @@
         if (visibility == VISIBLE) {
             checkClientOpenSession()
         }
+        signalMeasurer?.maybeSendSignals()
     }
 
     override fun setAlpha(alpha: Float) {
diff --git a/privacysandbox/ui/ui-client/src/main/java/androidx/privacysandbox/ui/client/view/SandboxedSdkViewSignalMeasurer.kt b/privacysandbox/ui/ui-client/src/main/java/androidx/privacysandbox/ui/client/view/SandboxedSdkViewSignalMeasurer.kt
index 57d201a..dd35657 100644
--- a/privacysandbox/ui/ui-client/src/main/java/androidx/privacysandbox/ui/client/view/SandboxedSdkViewSignalMeasurer.kt
+++ b/privacysandbox/ui/ui-client/src/main/java/androidx/privacysandbox/ui/client/view/SandboxedSdkViewSignalMeasurer.kt
@@ -18,6 +18,7 @@
 
 import android.graphics.Rect
 import android.os.SystemClock
+import android.view.View
 import androidx.privacysandbox.ui.core.SandboxedSdkViewUiInfo
 import androidx.privacysandbox.ui.core.SandboxedUiAdapter
 
@@ -92,13 +93,17 @@
 
     /** Updates the [SandboxedSdkViewUiInfo] that represents the state of the view. */
     private fun updateUiContainerInfo() {
-        val isVisible = view.getGlobalVisibleRect(onScreenGeometry)
-        if (!isVisible) {
-            onScreenGeometry.set(-1, -1, -1, -1)
+        if (view.windowVisibility == View.VISIBLE) {
+            val isVisible = view.getGlobalVisibleRect(onScreenGeometry)
+            if (!isVisible) {
+                onScreenGeometry.set(-1, -1, -1, -1)
+            } else {
+                view.getLocationOnScreen(windowLocation)
+                onScreenGeometry.offset(-windowLocation[0], -windowLocation[1])
+                onScreenGeometry.intersect(0, 0, view.width, view.height)
+            }
         } else {
-            view.getLocationOnScreen(windowLocation)
-            onScreenGeometry.offset(-windowLocation[0], -windowLocation[1])
-            onScreenGeometry.intersect(0, 0, view.width, view.height)
+            onScreenGeometry.set(-1, -1, -1, -1)
         }
         containerHeightPx = view.height
         containerWidthPx = view.width