diff --git a/LFLiveKit/capture/LFAudioCapture.m b/LFLiveKit/capture/LFAudioCapture.m
index bb565fa4..7336ee16 100755
--- a/LFLiveKit/capture/LFAudioCapture.m
+++ b/LFLiveKit/capture/LFAudioCapture.m
@@ -87,7 +87,7 @@ - (instancetype)initWithAudioConfiguration:(LFLiveAudioConfiguration *)configura
         }
         
         [session setPreferredSampleRate:_configuration.audioSampleRate error:nil];
-        [session setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker | AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers error:nil];
+        [session setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker | AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers | AVAudioSessionCategoryOptionAllowBluetooth error:nil];
         [session setActive:YES withOptions:kAudioSessionSetActiveFlag_NotifyOthersOnDeactivation error:nil];
         
         [session setActive:YES error:nil];
@@ -117,7 +117,7 @@ - (void)setRunning:(BOOL)running {
         dispatch_async(self.taskQueue, ^{
             self.isRunning = YES;
             NSLog(@"MicrophoneSource: startRunning");
-            [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker | AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers error:nil];
+            [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker | AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers | AVAudioSessionCategoryOptionAllowBluetooth error:nil];
             AudioOutputUnitStart(self.componetInstance);
         });
     } else {
diff --git a/LFLiveKit/capture/LFVideoCapture.m b/LFLiveKit/capture/LFVideoCapture.m
index 7e42a3f5..5e9f6d55 100755
--- a/LFLiveKit/capture/LFVideoCapture.m
+++ b/LFLiveKit/capture/LFVideoCapture.m
@@ -47,8 +47,8 @@ - (instancetype)initWithVideoConfiguration:(LFLiveVideoConfiguration *)configura
     if (self = [super init]) {
         _configuration = configuration;
 
-        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterBackground:) name:UIApplicationWillResignActiveNotification object:nil];
-        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterForeground:) name:UIApplicationDidBecomeActiveNotification object:nil];
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didEnterBackground:) name:UIApplicationDidEnterBackgroundNotification object:nil];
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterForeground:) name:UIApplicationWillEnterForegroundNotification object:nil];
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(statusBarChanged:) name:UIApplicationWillChangeStatusBarOrientationNotification object:nil];
         
         self.beautyFace = YES;
@@ -348,7 +348,7 @@ - (void)reloadMirror{
 
 #pragma mark Notification
 
-- (void)willEnterBackground:(NSNotification *)notification {
+- (void)didEnterBackground:(NSNotification *)notification {
     [UIApplication sharedApplication].idleTimerDisabled = NO;
     [self.videoCamera pauseCameraCapture];
     runSynchronouslyOnVideoProcessingQueue(^{
diff --git a/LFLiveKit/coder/LFHardwareVideoEncoder.m b/LFLiveKit/coder/LFHardwareVideoEncoder.m
index 6c3d20fe..b0572000 100755
--- a/LFLiveKit/coder/LFHardwareVideoEncoder.m
+++ b/LFLiveKit/coder/LFHardwareVideoEncoder.m
@@ -32,8 +32,8 @@ - (instancetype)initWithVideoStreamConfiguration:(LFLiveVideoConfiguration *)con
         NSLog(@"USE LFHardwareVideoEncoder");
         _configuration = configuration;
         [self resetCompressionSession];
-        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterBackground:) name:UIApplicationWillResignActiveNotification object:nil];
-        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterForeground:) name:UIApplicationDidBecomeActiveNotification object:nil];
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didEnterBackground:) name:UIApplicationDidEnterBackgroundNotification object:nil];
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willEnterForeground:) name:UIApplicationWillEnterForegroundNotification object:nil];
 #ifdef DEBUG
         enabledWriteVideoFile = NO;
         [self initForFilePath];
@@ -124,7 +124,7 @@ - (void)setDelegate:(id<LFVideoEncodingDelegate>)delegate {
 }
 
 #pragma mark -- Notification
-- (void)willEnterBackground:(NSNotification*)notification{
+- (void)didEnterBackground:(NSNotification*)notification{
     _isBackGround = YES;
 }