diff --git a/packages/CarrierDefaultApp/assets/slice_purchase_test.html b/packages/CarrierDefaultApp/assets/slice_purchase_test.html
index d2c1c04265bf0..917276b9ce65a 100644
--- a/packages/CarrierDefaultApp/assets/slice_purchase_test.html
+++ b/packages/CarrierDefaultApp/assets/slice_purchase_test.html
@@ -75,5 +75,11 @@
         Notify purchase failed
     </button>
     <p id="purchase_failed"></p>
+
+    <h2>Dismiss flow</h2>
+    <button type="button" onclick="testDismissFlow()">
+        Dismiss flow
+    </button>
+    <p id="dismiss_flow"></p>
 </body>
 </html>
diff --git a/packages/CarrierDefaultApp/assets/slice_purchase_test.js b/packages/CarrierDefaultApp/assets/slice_purchase_test.js
index 84ab1f9338389..be397a1159212 100644
--- a/packages/CarrierDefaultApp/assets/slice_purchase_test.js
+++ b/packages/CarrierDefaultApp/assets/slice_purchase_test.js
@@ -31,3 +31,9 @@ function testNotifyPurchaseFailed(failure_code = 0, failure_reason = "unknown")
     document.getElementById("purchase_failed").innerHTML =
             "Notified purchase failed.";
 }
+
+function testDismissFlow() {
+    DataBoostWebServiceFlow.dismissFlow();
+    document.getElementById("dismiss_flow").innerHTML =
+            "Called dismiss flow.";
+}
diff --git a/packages/CarrierDefaultApp/src/com/android/carrierdefaultapp/DataBoostWebServiceFlow.java b/packages/CarrierDefaultApp/src/com/android/carrierdefaultapp/DataBoostWebServiceFlow.java
index 0aadd31b6e18b..4500a220523d7 100644
--- a/packages/CarrierDefaultApp/src/com/android/carrierdefaultapp/DataBoostWebServiceFlow.java
+++ b/packages/CarrierDefaultApp/src/com/android/carrierdefaultapp/DataBoostWebServiceFlow.java
@@ -88,4 +88,21 @@ public class DataBoostWebServiceFlow {
             @Nullable String failureReason) {
         mActivity.onPurchaseFailed(failureCode, failureReason);
     }
+
+    /**
+     * Interface method allowing the carrier website to notify the slice purchase application that
+     * the service flow ended prematurely. This can be due to user action, an error in the
+     * web sheet logic, or an error on the network side.
+     *
+     * This can be called using the JavaScript below:
+     * <script type="text/javascript">
+     *     function dismissFlow() {
+     *         DataBoostWebServiceFlow.dismissFlow();
+     *     }
+     * </script>
+     */
+    @JavascriptInterface
+    public void dismissFlow() {
+        mActivity.onDismissFlow();
+    }
 }
diff --git a/packages/CarrierDefaultApp/src/com/android/carrierdefaultapp/SlicePurchaseActivity.java b/packages/CarrierDefaultApp/src/com/android/carrierdefaultapp/SlicePurchaseActivity.java
index 3aaa994f34bb4..2530257d629a4 100644
--- a/packages/CarrierDefaultApp/src/com/android/carrierdefaultapp/SlicePurchaseActivity.java
+++ b/packages/CarrierDefaultApp/src/com/android/carrierdefaultapp/SlicePurchaseActivity.java
@@ -138,6 +138,14 @@ public class SlicePurchaseActivity extends Activity {
         finishAndRemoveTask();
     }
 
+    protected void onDismissFlow() {
+        logd("onDismissFlow: Dismiss flow called while purchasing premium capability "
+                + TelephonyManager.convertPremiumCapabilityToString(mCapability));
+        SlicePurchaseBroadcastReceiver.sendSlicePurchaseAppResponse(
+                mIntent, SlicePurchaseController.EXTRA_INTENT_REQUEST_FAILED);
+        finishAndRemoveTask();
+    }
+
     @Override
     public boolean onKeyDown(int keyCode, @NonNull KeyEvent event) {
         // Pressing back in the WebView will go to the previous page instead of closing
diff --git a/packages/CarrierDefaultApp/tests/unit/src/com/android/carrierdefaultapp/SlicePurchaseActivityTest.java b/packages/CarrierDefaultApp/tests/unit/src/com/android/carrierdefaultapp/SlicePurchaseActivityTest.java
index e7a75e58105d8..cc103fa98e654 100644
--- a/packages/CarrierDefaultApp/tests/unit/src/com/android/carrierdefaultapp/SlicePurchaseActivityTest.java
+++ b/packages/CarrierDefaultApp/tests/unit/src/com/android/carrierdefaultapp/SlicePurchaseActivityTest.java
@@ -55,6 +55,7 @@ public class SlicePurchaseActivityTest extends ActivityUnitTestCase<SlicePurchas
     @Mock PendingIntent mPendingIntent;
     @Mock PendingIntent mSuccessfulIntent;
     @Mock PendingIntent mCanceledIntent;
+    @Mock PendingIntent mRequestFailedIntent;
     @Mock CarrierConfigManager mCarrierConfigManager;
     @Mock NotificationManager mNotificationManager;
     @Mock PersistableBundle mPersistableBundle;
@@ -112,6 +113,11 @@ public class SlicePurchaseActivityTest extends ActivityUnitTestCase<SlicePurchas
         doReturn(true).when(mSuccessfulIntent).isBroadcast();
         doReturn(mSuccessfulIntent).when(spiedIntent).getParcelableExtra(
                 eq(SlicePurchaseController.EXTRA_INTENT_SUCCESS), eq(PendingIntent.class));
+        doReturn(TelephonyManager.PHONE_PROCESS_NAME).when(mRequestFailedIntent)
+                .getCreatorPackage();
+        doReturn(true).when(mRequestFailedIntent).isBroadcast();
+        doReturn(mRequestFailedIntent).when(spiedIntent).getParcelableExtra(
+                eq(SlicePurchaseController.EXTRA_INTENT_REQUEST_FAILED), eq(PendingIntent.class));
 
         mSlicePurchaseActivity = startActivity(spiedIntent, null, null);
     }
@@ -124,7 +130,7 @@ public class SlicePurchaseActivityTest extends ActivityUnitTestCase<SlicePurchas
 
     @Test
     public void testOnPurchaseFailed() throws Exception {
-        int failureCode = SlicePurchaseController.FAILURE_CODE_SERVER_UNREACHABLE;
+        int failureCode = SlicePurchaseController.FAILURE_CODE_CARRIER_URL_UNAVAILABLE;
         String failureReason = "Server unreachable";
         mSlicePurchaseActivity.onPurchaseFailed(failureCode, failureReason);
         ArgumentCaptor<Intent> intentCaptor = ArgumentCaptor.forClass(Intent.class);
@@ -141,4 +147,10 @@ public class SlicePurchaseActivityTest extends ActivityUnitTestCase<SlicePurchas
         mSlicePurchaseActivity.onDestroy();
         verify(mCanceledIntent).send();
     }
+
+    @Test
+    public void testOnDismissFlow() throws Exception {
+        mSlicePurchaseActivity.onDismissFlow();
+        verify(mRequestFailedIntent).send();
+    }
 }