diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index 1769062..152883b 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -842,13 +842,13 @@
     return aps->handleDeviceConfigChange(device, address, name, encodedFormat);
 }
 
-status_t AudioSystem::setPhoneState(audio_mode_t state)
+status_t AudioSystem::setPhoneState(audio_mode_t state, uid_t uid)
 {
     if (uint32_t(state) >= AUDIO_MODE_CNT) return BAD_VALUE;
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return PERMISSION_DENIED;
 
-    return aps->setPhoneState(state);
+    return aps->setPhoneState(state, uid);
 }
 
 status_t AudioSystem::setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config)
diff --git a/media/libaudioclient/IAudioPolicyService.cpp b/media/libaudioclient/IAudioPolicyService.cpp
index cc78ec1..5b3a057 100644
--- a/media/libaudioclient/IAudioPolicyService.cpp
+++ b/media/libaudioclient/IAudioPolicyService.cpp
@@ -170,11 +170,12 @@
         return static_cast <status_t> (reply.readInt32());
     }
 
-    virtual status_t setPhoneState(audio_mode_t state)
+    virtual status_t setPhoneState(audio_mode_t state, uid_t uid)
     {
         Parcel data, reply;
         data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
         data.writeInt32(state);
+        data.writeInt32(uid);
         remote()->transact(SET_PHONE_STATE, data, &reply);
         return static_cast <status_t> (reply.readInt32());
     }
@@ -1596,7 +1597,8 @@
         case SET_PHONE_STATE: {
             CHECK_INTERFACE(IAudioPolicyService, data, reply);
             reply->writeInt32(static_cast <uint32_t>(setPhoneState(
-                    (audio_mode_t) data.readInt32())));
+                    (audio_mode_t) data.readInt32(),
+                    (uid_t) data.readInt32())));
             return NO_ERROR;
         } break;
 
diff --git a/media/libaudioclient/include/media/AudioSystem.h b/media/libaudioclient/include/media/AudioSystem.h
index 9d3f8b6..fe211e0 100644
--- a/media/libaudioclient/include/media/AudioSystem.h
+++ b/media/libaudioclient/include/media/AudioSystem.h
@@ -230,7 +230,7 @@
                                              const char *device_address,
                                              const char *device_name,
                                              audio_format_t encodedFormat);
-    static status_t setPhoneState(audio_mode_t state);
+    static status_t setPhoneState(audio_mode_t state, uid_t uid);
     static status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config);
     static audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage);
 
diff --git a/media/libaudioclient/include/media/IAudioPolicyService.h b/media/libaudioclient/include/media/IAudioPolicyService.h
index caa1d13..fe54dc5 100644
--- a/media/libaudioclient/include/media/IAudioPolicyService.h
+++ b/media/libaudioclient/include/media/IAudioPolicyService.h
@@ -53,7 +53,7 @@
                                               const char *device_address,
                                               const char *device_name,
                                               audio_format_t encodedFormat) = 0;
-    virtual status_t setPhoneState(audio_mode_t state) = 0;
+    virtual status_t setPhoneState(audio_mode_t state, uid_t uid) = 0;
     virtual status_t setForceUse(audio_policy_force_use_t usage,
                                     audio_policy_forced_cfg_t config) = 0;
     virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) = 0;
diff --git a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
index 8bc2837..a91fd80 100644
--- a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
@@ -121,7 +121,7 @@
                                                          device_name, encodedFormat);
 }
 
-status_t AudioPolicyService::setPhoneState(audio_mode_t state)
+status_t AudioPolicyService::setPhoneState(audio_mode_t state, uid_t uid)
 {
     if (mAudioPolicyManager == NULL) {
         return NO_INIT;
@@ -145,6 +145,7 @@
     AutoCallerClear acc;
     mAudioPolicyManager->setPhoneState(state);
     mPhoneState = state;
+    mPhoneStateOwnerUid = uid;
     return NO_ERROR;
 }
 
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index e297f34..41a0d2b 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -72,7 +72,7 @@
                                               const char *device_address,
                                               const char *device_name,
                                               audio_format_t encodedFormat);
-    virtual status_t setPhoneState(audio_mode_t state);
+    virtual status_t setPhoneState(audio_mode_t state, uid_t uid);
     virtual status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config);
     virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage);
     virtual audio_io_handle_t getOutput(audio_stream_type_t stream);
@@ -880,6 +880,7 @@
     // those can call back into AudioPolicyService methods and try to acquire the mutex
     sp<AudioPolicyEffects> mAudioPolicyEffects;
     audio_mode_t mPhoneState;
+    uid_t mPhoneStateOwnerUid;
 
     sp<UidPolicy> mUidPolicy;
     sp<SensorPrivacyPolicy> mSensorPrivacyPolicy;