diff --git a/ios/Classes/FlutterCallKitPlugin.m b/ios/Classes/FlutterCallKitPlugin.m
index 7ec8213e..156f6629 100644
--- a/ios/Classes/FlutterCallKitPlugin.m
+++ b/ios/Classes/FlutterCallKitPlugin.m
@@ -10,7 +10,7 @@
 
 static NSString *const kHandleStartCallNotification = @"handleStartCallNotification";
 static NSString *const kDidReceiveStartCallAction = @"didReceiveStartCallAction";
-static NSString *const kPerformAnswerCallAction = @"performAnswerCallAction";
+static NSString *const kPerformAnswerCallAction = @"onPerformAnswerCallAction";
 static NSString *const kPerformEndCallAction = @"performEndCallAction";
 static NSString *const kDidActivateAudioSession = @"didActivateAudioSession";
 static NSString *const kDidDeactivateAudioSession = @"didDeactivateAudioSession";
@@ -117,8 +117,10 @@ - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
         [self setMutedCall:call.arguments result:result];
     }else if ([@"updateDisplay" isEqualToString:method]) {
         [self updateDisplay:call.arguments result:result];
-    }else if ([@"setOnHold" isEqualToString:method]) {
+    }if ([@"setOnHoldCall" isEqualToString:method]) {
         [self setOnHold:call.arguments result:result];
+    }if ([@"enableSpeaker" isEqualToString:method]) {
+        [self enableSpeaker:call.arguments result:result];
     }else {
         result(FlutterMethodNotImplemented);
     }
@@ -224,6 +226,32 @@ - (void)setOnHold:(NSDictionary *)arguments result:(FlutterResult)result
     [self requestTransaction:transaction result:result];
 }
 
+- (void)enableSpeaker:(NSDictionary *)arguments result:(FlutterResult)result
+{
+    NSNumber* enable = arguments[@"enable"];
+#ifdef DEBUG
+    NSLog(@"[FlutterCallKitPlugin][enableSpeaker] enableSpeaker = %d",  [enable boolValue]);
+#endif
+    AVAudioSession* audioSession = [AVAudioSession sharedInstance];
+    [audioSession setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:
+     AVAudioSessionCategoryOptionAllowBluetooth|
+     AVAudioSessionCategoryOptionAllowBluetoothA2DP error:nil];
+    [audioSession setMode:AVAudioSessionModeVoiceChat error:nil];
+    
+    double sampleRate = 44100.0;
+    [audioSession setPreferredSampleRate:sampleRate error:nil];
+    
+    NSTimeInterval bufferDuration = .005;
+    [audioSession setPreferredIOBufferDuration:bufferDuration error:nil];
+    
+    NSError* error;
+    [audioSession overrideOutputAudioPort:enable.boolValue ? AVAudioSessionPortOverrideSpeaker : AVAudioSessionPortOverrideNone error:&error];
+    if(error != nil){
+        NSLog(@"[FlutterCallKitPlugin][enableSpeaker] error = %@",error );
+    }
+    [audioSession setActive:TRUE error:nil];
+}
+
 - (void)reportConnectingOutgoingCallWithUUID:(NSString *)uuidString result:(FlutterResult)result
 {
     NSUUID *uuid = [[NSUUID alloc] initWithUUIDString:uuidString];
@@ -512,10 +540,10 @@ + (void)reportNewIncomingCall:(NSString *)uuidString
     NSLog(@"[FlutterCallKitPlugin][reportNewIncomingCall] uuid = %@", uuid );
     CXCallUpdate *callUpdate = [[CXCallUpdate alloc] init];
     callUpdate.remoteHandle = [[CXHandle alloc] initWithType:_handleType value:handle];
-    callUpdate.supportsDTMF = YES;
-    callUpdate.supportsHolding = YES;
-    callUpdate.supportsGrouping = YES;
-    callUpdate.supportsUngrouping = YES;
+    callUpdate.supportsDTMF = NO;
+    callUpdate.supportsHolding = NO;
+    callUpdate.supportsGrouping = NO;
+    callUpdate.supportsUngrouping = NO;
     callUpdate.hasVideo = hasVideo;
     callUpdate.localizedCallerName = localizedCallerName;
     
diff --git a/lib/flutter_call_kit.dart b/lib/flutter_call_kit.dart
index f1ebc0ce..805d7a4f 100644
--- a/lib/flutter_call_kit.dart
+++ b/lib/flutter_call_kit.dart
@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:io';
 
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
@@ -195,8 +194,8 @@ class FlutterCallKit {
         if (_onProviderReset == null) {
           return null;
         }
-        return _onProviderReset!();
-      case "performAnswerCallAction":
+        return _onProviderReset();
+      case "onPerformAnswerCallAction":
         if (_performAnswerCallAction == null) {
           return null;
         }
@@ -301,9 +300,6 @@ class FlutterCallKit {
   }
 
   Future<void> reportConnectingOutgoingCallWithUUID(String uuid) async {
-    if (!Platform.isIOS) {
-      return;
-    }
     await _channel.invokeMethod<void>(
         'reportConnectingOutgoingCallWithUUID', uuid);
   }
@@ -374,7 +370,7 @@ class FlutterCallKit {
     }
     await _channel.invokeMethod<void>('setMutedCall', {
       'uuid': uuid,
-      'mute': mute,
+      'muted': mute,
     });
   }
 
@@ -426,7 +422,7 @@ class FlutterCallKit {
     if (!Platform.isIOS) {
       return;
     }
-    await _channel.invokeMethod<void>('setMutedCall', {
+    await _channel.invokeMethod<void>('setOnHoldCall', {
       'uuid': uuid,
       'hold': hold,
     });
@@ -439,6 +435,10 @@ class FlutterCallKit {
     await _channel.invokeMethod<void>('setReachable');
   }
 
+  Future<void> enableSpeaker(bool enable) async {
+    await _channel.invokeMethod<void>('enableSpeaker', {'enable': enable});
+  }
+
   static String handleTypeToString(HandleType handleType) {
     switch (handleType) {
       case HandleType.generic: