diff --git a/telecomm/java/android/telecom/Call.java b/telecomm/java/android/telecom/Call.java
index ead90bb..3365ab7 100755
--- a/telecomm/java/android/telecom/Call.java
+++ b/telecomm/java/android/telecom/Call.java
@@ -22,6 +22,7 @@
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
 import android.compat.annotation.UnsupportedAppUsage;
+import android.content.pm.ServiceInfo;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
@@ -1635,13 +1636,21 @@
 
     /**
      * Instructs Telecom to put the call into the background audio processing state.
-     *
+     * <p>
      * This method can be called either when the call is in {@link #STATE_RINGING} or
      * {@link #STATE_ACTIVE}. After Telecom acknowledges the request by setting the call's state to
      * {@link #STATE_AUDIO_PROCESSING}, your app may setup the audio paths with the audio stack in
      * order to capture and play audio on the call stream.
-     *
+     * <p>
      * This method can only be called by the default dialer app.
+     * <p>
+     * Apps built with SDK version {@link android.os.Build.VERSION_CODES#R} or later which are using
+     * the microphone as part of audio processing should specify the foreground service type using
+     * the attribute {@link android.R.attr#foregroundServiceType} in the {@link InCallService}
+     * service element of the app's manifest file.
+     * The {@link ServiceInfo#FOREGROUND_SERVICE_TYPE_MICROPHONE} attribute should be specified.
+     * @see <a href="https://developer.android.com/preview/privacy/foreground-service-types">
+     * the Android Developer Site</a> for more information.
      * @hide
      */
     @SystemApi
diff --git a/telecomm/java/android/telecom/CallScreeningService.java b/telecomm/java/android/telecom/CallScreeningService.java
index f8722f4..8abab90 100644
--- a/telecomm/java/android/telecom/CallScreeningService.java
+++ b/telecomm/java/android/telecom/CallScreeningService.java
@@ -23,6 +23,7 @@
 import android.app.Service;
 import android.content.ComponentName;
 import android.content.Intent;
+import android.content.pm.ServiceInfo;
 import android.net.Uri;
 import android.os.Handler;
 import android.os.IBinder;
@@ -281,9 +282,20 @@
              * Sets whether to request background audio processing so that the in-call service can
              * screen the call further. If set to {@code true}, {@link #setDisallowCall} should be
              * called with {@code false}, and all other parameters in this builder will be ignored.
-             *
+             * <p>
              * This request will only be honored if the {@link CallScreeningService} shares the same
              * uid as the default dialer app. Otherwise, the call will go through as usual.
+             * <p>
+             * Apps built with SDK version {@link android.os.Build.VERSION_CODES#R} or later which
+             * are using the microphone as part of audio processing should specify the
+             * foreground service type using the attribute
+             * {@link android.R.attr#foregroundServiceType} in the {@link CallScreeningService}
+             * service element of the app's manifest file.
+             * The {@link ServiceInfo#FOREGROUND_SERVICE_TYPE_MICROPHONE} attribute should be
+             * specified.
+             * @see
+             * <a href="https://developer.android.com/preview/privacy/foreground-service-types">
+             *     the Android Developer Site</a> for more information.
              *
              * @param shouldScreenCallViaAudioProcessing Whether to request further call screening.
              * @hide