diff --git a/java/com/android/dialer/precall/externalreceiver/AndroidManifest.xml b/java/com/android/dialer/precall/externalreceiver/AndroidManifest.xml
new file mode 100644
index 0000000..b1c625a
--- /dev/null
+++ b/java/com/android/dialer/precall/externalreceiver/AndroidManifest.xml
@@ -0,0 +1,40 @@
+<!--
+ ~ Copyright (C) 2017 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
+ -->
+<manifest
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.dialer.precall.externalreceiver">
+
+  <application>
+    <activity
+        android:excludeFromRecents="true"
+        android:exported="true"
+        android:name="com.android.dialer.precall.externalreceiver.LaunchPreCallActivity"
+        android:noHistory="true"
+        android:permission="android.permission.CALL_PHONE"
+        android:theme="@style/Theme.PreCall.DialogHolder">
+      <intent-filter>
+        <action android:name="com.android.dialer.LAUNCH_PRE_CALL"/>
+        <category android:name="android.intent.category.DEFAULT" />
+        <data android:scheme="tel" />
+      </intent-filter>
+      <intent-filter>
+        <action android:name="com.android.dialer.LAUNCH_PRE_CALL"/>
+        <category android:name="android.intent.category.DEFAULT" />
+        <data android:scheme="voicemail" />
+      </intent-filter>
+    </activity>
+  </application>
+</manifest>
diff --git a/java/com/android/dialer/precall/externalreceiver/LaunchPreCallActivity.java b/java/com/android/dialer/precall/externalreceiver/LaunchPreCallActivity.java
new file mode 100644
index 0000000..121e6a6
--- /dev/null
+++ b/java/com/android/dialer/precall/externalreceiver/LaunchPreCallActivity.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2017 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 com.android.dialer.precall.externalreceiver;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import com.android.dialer.callintent.CallInitiationType.Type;
+import com.android.dialer.callintent.CallIntentBuilder;
+import com.android.dialer.precall.PreCall;
+
+/**
+ * Activity that forwards to {@link PreCall#start(Context, CallIntentBuilder)} so the pre-call flow
+ * can be initiated by external apps. This activity is exported but can only be started by apps with
+ * {@link android.Manifest.permission#CALL_PHONE}. Keyguard will be triggered if phone is locked.
+ *
+ * @see CallIntentBuilder
+ */
+public class LaunchPreCallActivity extends Activity {
+
+  public static final String ACTION_LAUNCH_PRE_CALL = "com.android.dialer.LAUNCH_PRE_CALL";
+
+  public static final String EXTRA_PHONE_ACCOUNT_HANDLE = "phone_account_handle";
+
+  public static final String EXTRA_IS_VIDEO_CALL = "is_video_call";
+
+  public static final String EXTRA_CALL_SUBJECT = "call_subject";
+
+  public static final String EXTRA_ALLOW_ASSISTED_DIAL = "allow_assisted_dial";
+
+  @Override
+  public void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    Intent intent = getIntent();
+    CallIntentBuilder builder = new CallIntentBuilder(intent.getData(), Type.EXTERNAL_INITIATION);
+    builder
+        .setPhoneAccountHandle(intent.getParcelableExtra(EXTRA_PHONE_ACCOUNT_HANDLE))
+        .setIsVideoCall(intent.getBooleanExtra(EXTRA_IS_VIDEO_CALL, false))
+        .setCallSubject(intent.getStringExtra(EXTRA_CALL_SUBJECT))
+        .setAllowAssistedDial(intent.getBooleanExtra(EXTRA_ALLOW_ASSISTED_DIAL, false));
+    PreCall.start(this, builder);
+    finish();
+  }
+}
diff --git a/packages.mk b/packages.mk
index 223e40d..86d8407 100644
--- a/packages.mk
+++ b/packages.mk
@@ -41,6 +41,7 @@
 	com.android.dialer.phonenumberutil \
 	com.android.dialer.postcall \
 	com.android.dialer.precall.impl \
+	com.android.dialer.precall.externalreceiver \
 	com.android.dialer.preferredsim.impl \
 	com.android.dialer.searchfragment.common \
 	com.android.dialer.searchfragment.cp2 \