diff --git a/dom/bluetooth2/bluedroid/BluetoothInterface.cpp b/dom/bluetooth2/bluedroid/BluetoothInterface.cpp
index 8f83e9b80e43..58924c23c52a 100644
--- a/dom/bluetooth2/bluedroid/BluetoothInterface.cpp
+++ b/dom/bluetooth2/bluedroid/BluetoothInterface.cpp
@@ -818,13 +818,18 @@ BluetoothHandsfreeInterface::ClccResponse(
 
 /* Phone State */
 
-bt_status_t
+void
 BluetoothHandsfreeInterface::PhoneStateChange(int aNumActive, int aNumHeld,
   bthf_call_state_t aCallSetupState, const char* aNumber,
-  bthf_call_addrtype_t aType)
+  bthf_call_addrtype_t aType, BluetoothHandsfreeResultHandler* aRes)
 {
-  return mInterface->phone_state_change(aNumActive, aNumHeld, aCallSetupState,
-                                        aNumber, aType);
+  bt_status_t status = mInterface->phone_state_change(aNumActive, aNumHeld,
+                                                      aCallSetupState,
+                                                      aNumber, aType);
+  if (aRes) {
+    DispatchBluetoothHandsfreeResult(
+      aRes, &BluetoothHandsfreeResultHandler::PhoneStateChange, status);
+  }
 }
 
 //
diff --git a/dom/bluetooth2/bluedroid/BluetoothInterface.h b/dom/bluetooth2/bluedroid/BluetoothInterface.h
index ac76fe548154..b3ff596e77e1 100644
--- a/dom/bluetooth2/bluedroid/BluetoothInterface.h
+++ b/dom/bluetooth2/bluedroid/BluetoothInterface.h
@@ -164,10 +164,10 @@ public:
 
   /* Phone State */
 
-  bt_status_t PhoneStateChange(int aNumActive, int aNumHeld,
-                               bthf_call_state_t aCallSetupState,
-                               const char* aNumber,
-                               bthf_call_addrtype_t aType);
+  void PhoneStateChange(int aNumActive, int aNumHeld,
+                        bthf_call_state_t aCallSetupState,
+                        const char* aNumber, bthf_call_addrtype_t aType,
+                        BluetoothHandsfreeResultHandler* aRes);
 
 protected:
   BluetoothHandsfreeInterface(const bthf_interface_t* aInterface);
diff --git a/dom/bluetooth2/bluedroid/hfp/BluetoothHfpManager.cpp b/dom/bluetooth2/bluedroid/hfp/BluetoothHfpManager.cpp
index 8c00f2020d11..9fe956796b1f 100644
--- a/dom/bluetooth2/bluedroid/hfp/BluetoothHfpManager.cpp
+++ b/dom/bluetooth2/bluedroid/hfp/BluetoothHfpManager.cpp
@@ -1210,6 +1210,17 @@ BluetoothHfpManager::SendResponse(bthf_at_response_t aResponseCode)
     aResponseCode, 0, new AtResponseResultHandler());
 }
 
+class PhoneStateChangeResultHandler MOZ_FINAL
+: public BluetoothHandsfreeResultHandler
+{
+public:
+  void OnError(bt_status_t aStatus) MOZ_OVERRIDE
+  {
+    BT_WARNING("BluetoothHandsfreeInterface::PhoneStateChange failed: %d",
+               (int)aStatus);
+  }
+};
+
 void
 BluetoothHfpManager::UpdatePhoneCIND(uint32_t aCallIndex)
 {
@@ -1227,9 +1238,9 @@ BluetoothHfpManager::UpdatePhoneCIND(uint32_t aCallIndex)
           aCallIndex, mCurrentCallArray[aCallIndex].mState,
           numActive, numHeld, callSetupState);
 
-  NS_ENSURE_TRUE_VOID(BT_STATUS_SUCCESS ==
-    sBluetoothHfpInterface->PhoneStateChange(
-      numActive, numHeld, callSetupState, number.get(), type));
+  sBluetoothHfpInterface->PhoneStateChange(
+    numActive, numHeld, callSetupState, number.get(), type,
+    new PhoneStateChangeResultHandler());
 }
 
 class DeviceStatusNotificationResultHandler MOZ_FINAL