diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index b86421c..b5c4e01 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -341,6 +341,10 @@
     private static final int CMD_GET_SLICING_CONFIG = 110;
     private static final int EVENT_GET_SLICING_CONFIG_DONE = 111;
     private static final int CMD_ERASE_DATA_SHARED_PREFERENCES = 112;
+    private static final int CMD_ENABLE_VONR = 113;
+    private static final int EVENT_ENABLE_VONR_DONE = 114;
+    private static final int CMD_IS_VONR_ENABLED = 115;
+    private static final int EVENT_IS_VONR_ENABLED_DONE = 116;
 
     // Parameters of select command.
     private static final int SELECT_COMMAND = 0xA4;
@@ -834,7 +838,7 @@
                     } else {
                         // request.result must be set to something non-null
                         // for the calling thread to unblock
-                        if (request.result != null) {
+                        if (ar.result != null) {
                             request.result = ar.result;
                         } else {
                             request.result = false;
@@ -851,6 +855,46 @@
                     notifyRequester(request);
                     break;
 
+                case CMD_IS_VONR_ENABLED: {
+                    request = (MainThreadRequest) msg.obj;
+                    onCompleted = obtainMessage(EVENT_IS_VONR_ENABLED_DONE,
+                            request);
+                    Phone phone = getPhoneFromRequest(request);
+                    if (phone != null) {
+                        phone.isVoNrEnabled(onCompleted, request.workSource);
+                    } else {
+                        loge("isVoNrEnabled: No phone object");
+                        request.result = false;
+                        notifyRequester(request);
+                    }
+                    break;
+                }
+
+                case EVENT_IS_VONR_ENABLED_DONE:
+                    ar = (AsyncResult) msg.obj;
+                    request = (MainThreadRequest) ar.userObj;
+                    if (ar.exception == null && ar.result != null) {
+                        request.result = ar.result;
+                    } else {
+                        // request.result must be set to something non-null
+                        // for the calling thread to unblock
+                        if (ar.result != null) {
+                            request.result = ar.result;
+                        } else {
+                            request.result = false;
+                        }
+                        if (ar.result == null) {
+                            loge("isVoNrEnabled: Empty response");
+                        } else if (ar.exception instanceof CommandException) {
+                            loge("isVoNrEnabled: CommandException: "
+                                    + ar.exception);
+                        } else {
+                            loge("isVoNrEnabled: Unknown exception");
+                        }
+                    }
+                    notifyRequester(request);
+                    break;
+
                 case CMD_ENABLE_NR_DUAL_CONNECTIVITY: {
                     request = (MainThreadRequest) msg.obj;
                     onCompleted = obtainMessage(EVENT_ENABLE_NR_DUAL_CONNECTIVITY_DONE, request);
@@ -899,6 +943,49 @@
                     break;
                 }
 
+                case CMD_ENABLE_VONR: {
+                    request = (MainThreadRequest) msg.obj;
+                    onCompleted = obtainMessage(EVENT_ENABLE_VONR_DONE, request);
+                    Phone phone = getPhoneFromRequest(request);
+                    if (phone != null) {
+                        phone.setVoNrEnabled((boolean) request.argument, onCompleted,
+                                request.workSource);
+                    } else {
+                        loge("setVoNrEnabled: No phone object");
+                        request.result =
+                                TelephonyManager.ENABLE_VONR_RADIO_NOT_AVAILABLE;
+                        notifyRequester(request);
+                    }
+                    break;
+                }
+
+                case EVENT_ENABLE_VONR_DONE: {
+                    ar = (AsyncResult) msg.obj;
+                    request = (MainThreadRequest) ar.userObj;
+                    if (ar.exception == null) {
+                        request.result = TelephonyManager.ENABLE_VONR_SUCCESS;
+                    } else {
+                        request.result = TelephonyManager.ENABLE_VONR_RADIO_ERROR;
+                        if (ar.exception instanceof CommandException) {
+                            CommandException.Error error =
+                                    ((CommandException) (ar.exception)).getCommandError();
+                            if (error == CommandException.Error.RADIO_NOT_AVAILABLE) {
+                                request.result = TelephonyManager.ENABLE_VONR_RADIO_NOT_AVAILABLE;
+                            } else if (error == CommandException.Error.REQUEST_NOT_SUPPORTED) {
+                                request.result = TelephonyManager.ENABLE_VONR_REQUEST_NOT_SUPPORTED;
+                            } else {
+                                request.result = TelephonyManager.ENABLE_VONR_RADIO_ERROR;
+                            }
+                            loge("setVoNrEnabled" + ": CommandException: "
+                                    + ar.exception);
+                        } else {
+                            loge("setVoNrEnabled" + ": Unknown exception");
+                        }
+                    }
+                    notifyRequester(request);
+                    break;
+                }
+
                 case CMD_GET_ALLOWED_NETWORK_TYPES_BITMASK:
                     request = (MainThreadRequest) msg.obj;
                     onCompleted = obtainMessage(EVENT_GET_ALLOWED_NETWORK_TYPES_BITMASK_DONE,
@@ -8160,6 +8247,53 @@
     }
 
     /**
+     * Enable or disable Voice over NR (VoNR)
+     * @param subId the subscription ID that this action applies to.
+     * @param enabled enable or disable VoNR.
+     * @return operation result.
+     */
+    @Override
+    public int setVoNrEnabled(int subId, boolean enabled) {
+        enforceModifyPermission();
+        final Phone phone = getPhone(subId);
+
+        final long identity = Binder.clearCallingIdentity();
+        if (phone == null) {
+            loge("setVoNrEnabled fails with no phone object for subId: " + subId);
+            return TelephonyManager.ENABLE_VONR_RADIO_NOT_AVAILABLE;
+        }
+
+        WorkSource workSource = getWorkSource(Binder.getCallingUid());
+        try {
+            int result = (int) sendRequest(CMD_ENABLE_VONR, enabled, subId,
+                    workSource);
+            if (DBG) log("setVoNrEnabled result: " + result);
+            return result;
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+
+    /**
+     * Is voice over NR enabled
+     * @return true if VoNR is enabled else false
+     */
+    @Override
+    public boolean isVoNrEnabled(int subId) {
+        enforceReadPrivilegedPermission("isVoNrEnabled");
+        WorkSource workSource = getWorkSource(Binder.getCallingUid());
+        final long identity = Binder.clearCallingIdentity();
+        try {
+            boolean isEnabled = (boolean) sendRequest(CMD_IS_VONR_ENABLED,
+                    null, subId, workSource);
+            if (DBG) log("isVoNrEnabled: " + isEnabled);
+            return isEnabled;
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+
+    /**
      * Action set from carrier signalling broadcast receivers to start/stop reporting the default
      * network status based on which carrier apps could apply actions accordingly,
      * enable/disable default url handler for example.