diff --git a/Classes/Base.lproj/CallOutgoingView.xib b/Classes/Base.lproj/CallOutgoingView.xib
index 62e9b7ff6..d2890341d 100644
--- a/Classes/Base.lproj/CallOutgoingView.xib
+++ b/Classes/Base.lproj/CallOutgoingView.xib
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="9531" systemVersion="15C50" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="9531" systemVersion="15D21" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none">
     <dependencies>
-        <deployment identifier="iOS"/>
         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9529"/>
     </dependencies>
     <objects>
@@ -138,7 +137,7 @@
                                         <action selector="onDeclineClick:" destination="-1" eventType="touchUpInside" id="Ebl-hM-8F9"/>
                                     </connections>
                                 </button>
-                                <button opaque="NO" tag="9" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="26e-Pj-2Oh" userLabel="microButton" customClass="UIMicroButton">
+                                <button opaque="NO" tag="9" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="26e-Pj-2Oh" userLabel="microButton" customClass="UIMutedMicroButton">
                                     <rect key="frame" x="188" y="0.0" width="94" height="63"/>
                                     <autoresizingMask key="autoresizingMask" flexibleMinX="YES" widthSizable="YES" flexibleMaxX="YES" heightSizable="YES"/>
                                     <accessibility key="accessibilityConfiguration" label="Accept"/>
@@ -338,7 +337,7 @@
                                         <action selector="onDeclineClick:" destination="-1" eventType="touchUpInside" id="voJ-Cd-XHg"/>
                                     </connections>
                                 </button>
-                                <button opaque="NO" tag="9" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="jLg-1u-ulZ" userLabel="microButton" customClass="UIMicroButton">
+                                <button opaque="NO" tag="9" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="jLg-1u-ulZ" userLabel="microButton" customClass="UIMutedMicroButton">
                                     <rect key="frame" x="334" y="0.0" width="167" height="63"/>
                                     <autoresizingMask key="autoresizingMask" flexibleMinX="YES" widthSizable="YES" flexibleMaxX="YES" heightSizable="YES"/>
                                     <accessibility key="accessibilityConfiguration" label="Accept"/>
diff --git a/Classes/Base.lproj/CallView.xib b/Classes/Base.lproj/CallView.xib
index d0533b320..1e1bb5183 100644
--- a/Classes/Base.lproj/CallView.xib
+++ b/Classes/Base.lproj/CallView.xib
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="9531" systemVersion="15D21" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none">
     <dependencies>
-        <deployment identifier="iOS"/>
         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9529"/>
     </dependencies>
     <objects>
@@ -539,7 +538,7 @@
                                             <rect key="frame" x="26" y="15" width="37" height="37"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                                         </activityIndicatorView>
-                                        <button opaque="NO" tag="52" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="pRH-Ao-h65" userLabel="microButton" customClass="UIMicroButton">
+                                        <button opaque="NO" tag="52" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="pRH-Ao-h65" userLabel="microButton" customClass="UIMutedMicroButton">
                                             <rect key="frame" x="94" y="0.0" width="94" height="63"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMinX="YES" widthSizable="YES" flexibleMaxX="YES" flexibleMinY="YES" heightSizable="YES" flexibleMaxY="YES"/>
                                             <accessibility key="accessibilityConfiguration" label="Micro"/>
@@ -1129,7 +1128,7 @@
                                                 <outlet property="waitView" destination="PFh-Rq-z48" id="q07-6z-jsc"/>
                                             </connections>
                                         </button>
-                                        <button opaque="NO" tag="52" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="Pgq-7X-X64" userLabel="microButton" customClass="UIMicroButton">
+                                        <button opaque="NO" tag="52" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="Pgq-7X-X64" userLabel="microButton" customClass="UIMutedMicroButton">
                                             <rect key="frame" x="83" y="0.0" width="83" height="63"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMinX="YES" widthSizable="YES" flexibleMaxX="YES" flexibleMinY="YES" heightSizable="YES" flexibleMaxY="YES"/>
                                             <accessibility key="accessibilityConfiguration" label="Micro"/>
diff --git a/Classes/Base.lproj/CallView~ipad.xib b/Classes/Base.lproj/CallView~ipad.xib
index 6ac9ee283..9de664410 100644
--- a/Classes/Base.lproj/CallView~ipad.xib
+++ b/Classes/Base.lproj/CallView~ipad.xib
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="9531" systemVersion="15D21" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none">
     <dependencies>
-        <deployment identifier="iOS"/>
         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9529"/>
     </dependencies>
     <objects>
@@ -601,7 +600,7 @@
                                             <rect key="frame" x="31" y="15" width="37" height="37"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
                                         </activityIndicatorView>
-                                        <button opaque="NO" tag="52" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="pRH-Ao-h65" userLabel="microButton" customClass="UIMicroButton">
+                                        <button opaque="NO" tag="52" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="pRH-Ao-h65" userLabel="microButton" customClass="UIMutedMicroButton">
                                             <rect key="frame" x="100" y="0.0" width="100" height="63"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMinX="YES" widthSizable="YES" flexibleMaxX="YES" flexibleMinY="YES" heightSizable="YES" flexibleMaxY="YES"/>
                                             <accessibility key="accessibilityConfiguration" label="Micro"/>
@@ -1128,7 +1127,7 @@
                                                 <outlet property="waitView" destination="PFh-Rq-z48" id="q07-6z-jsc"/>
                                             </connections>
                                         </button>
-                                        <button opaque="NO" tag="52" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="Pgq-7X-X64" userLabel="microButton" customClass="UIMicroButton">
+                                        <button opaque="NO" tag="52" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" id="Pgq-7X-X64" userLabel="microButton" customClass="UIMutedMicroButton">
                                             <rect key="frame" x="590" y="0.0" width="100" height="63"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMinX="YES" widthSizable="YES" flexibleMaxX="YES" flexibleMinY="YES" heightSizable="YES" flexibleMaxY="YES"/>
                                             <accessibility key="accessibilityConfiguration" label="Micro"/>
diff --git a/Classes/CallOutgoingView.h b/Classes/CallOutgoingView.h
index 5ad6a1504..e63b03be3 100644
--- a/Classes/CallOutgoingView.h
+++ b/Classes/CallOutgoingView.h
@@ -35,7 +35,7 @@
 @property(weak, nonatomic) IBOutlet UIBluetoothButton *routesBluetoothButton;
 @property(weak, nonatomic) IBOutlet UIButton *routesEarpieceButton;
 @property(weak, nonatomic) IBOutlet UISpeakerButton *routesSpeakerButton;
-@property(weak, nonatomic) IBOutlet UIMicroButton *microButton;
+@property(weak, nonatomic) IBOutlet UIMutedMicroButton *microButton;
 
 - (IBAction)onDeclineClick:(id)sender;
 
diff --git a/Classes/CallView.h b/Classes/CallView.h
index 1d7991caf..77c517f20 100644
--- a/Classes/CallView.h
+++ b/Classes/CallView.h
@@ -25,7 +25,7 @@
 #import "UICompositeView.h"
 #import "CallPausedTableView.h"
 
-#import "UIMicroButton.h"
+#import "UIMutedMicroButton.h"
 #import "UIPauseButton.h"
 #import "UISpeakerButton.h"
 #import "UIVideoButton.h"
@@ -57,7 +57,7 @@
 @property(nonatomic, strong) IBOutlet UIPauseButton *callPauseButton;
 @property(nonatomic, strong) IBOutlet UIButton *optionsConferenceButton;
 @property(nonatomic, strong) IBOutlet UIVideoButton *videoButton;
-@property(nonatomic, strong) IBOutlet UIMicroButton *microButton;
+@property(nonatomic, strong) IBOutlet UIMutedMicroButton *microButton;
 @property(nonatomic, strong) IBOutlet UISpeakerButton *speakerButton;
 @property(nonatomic, strong) IBOutlet UIToggleButton *routesButton;
 @property(nonatomic, strong) IBOutlet UIToggleButton *optionsButton;
diff --git a/Classes/LinphoneUI/UIMicroButton.h b/Classes/LinphoneUI/UIMutedMicroButton.h
similarity index 57%
rename from Classes/LinphoneUI/UIMicroButton.h
rename to Classes/LinphoneUI/UIMutedMicroButton.h
index 40a208b0f..5cfc8ef35 100644
--- a/Classes/LinphoneUI/UIMicroButton.h
+++ b/Classes/LinphoneUI/UIMutedMicroButton.h
@@ -1,28 +1,27 @@
-/* UIMicroButton.h
+/* UIMutedMicroButton.h
  *
  * Copyright (C) 2011  Belledonne Comunications, Grenoble, France
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or   
- *  (at your option) any later version.                                 
- *                                                                      
- *  This program is distributed in the hope that it will be useful,     
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of      
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       
- *  GNU General Public License for more details.                
- *                                                                      
- *  You should have received a copy of the GNU General Public License   
- *  along with this program; if not, write to the Free Software         
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */       
+ */
 
 #import <UIKit/UIKit.h>
 
 #import "UIToggleButton.h"
 
-@interface UIMicroButton : UIToggleButton<UIToggleButtonDelegate> {
-
+@interface UIMutedMicroButton : UIToggleButton <UIToggleButtonDelegate> {
 }
 
 @end
diff --git a/Classes/LinphoneUI/UIMicroButton.m b/Classes/LinphoneUI/UIMutedMicroButton.m
similarity index 82%
rename from Classes/LinphoneUI/UIMicroButton.m
rename to Classes/LinphoneUI/UIMutedMicroButton.m
index a3c87bcab..62043f6ff 100644
--- a/Classes/LinphoneUI/UIMicroButton.m
+++ b/Classes/LinphoneUI/UIMutedMicroButton.m
@@ -1,4 +1,4 @@
-/* UIMicroButton.m
+/* UIMutedMicroButton.m
  *
  * Copyright (C) 2011  Belledonne Comunications, Grenoble, France
  *
@@ -17,11 +17,11 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-#import "UIMicroButton.h"
+#import "UIMutedMicroButton.h"
 
 #import "LinphoneManager.h"
 
-@implementation UIMicroButton
+@implementation UIMutedMicroButton
 
 - (void)onOn {
 	linphone_core_enable_mic(LC, false);
@@ -32,7 +32,7 @@
 }
 
 - (bool)onUpdate {
-	return !(linphone_core_get_current_call(LC) && linphone_core_mic_enabled(LC));
+	return (linphone_core_get_current_call(LC) || linphone_core_is_in_conference(LC)) && !linphone_core_mic_enabled(LC);
 }
 
 @end
diff --git a/linphone.xcodeproj/project.pbxproj b/linphone.xcodeproj/project.pbxproj
index 3dfba8c47..d12cd4080 100755
--- a/linphone.xcodeproj/project.pbxproj
+++ b/linphone.xcodeproj/project.pbxproj
@@ -15,7 +15,7 @@
 		1DF5F4E00D08C38300B7A737 /* UIKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1DF5F4DF0D08C38300B7A737 /* UIKit.framework */; settings = {ATTRIBUTES = (Weak, ); }; };
 		2214EB7A12F846B1002A5394 /* UICallButton.m in Sources */ = {isa = PBXBuildFile; fileRef = 2214EB7912F846B1002A5394 /* UICallButton.m */; };
 		2214EB8912F84EBB002A5394 /* UIHangUpButton.m in Sources */ = {isa = PBXBuildFile; fileRef = 2214EB8812F84EBB002A5394 /* UIHangUpButton.m */; };
-		2214EBF312F86360002A5394 /* UIMicroButton.m in Sources */ = {isa = PBXBuildFile; fileRef = 2214EBF212F86360002A5394 /* UIMicroButton.m */; };
+		2214EBF312F86360002A5394 /* UIMutedMicroButton.m in Sources */ = {isa = PBXBuildFile; fileRef = 2214EBF212F86360002A5394 /* UIMutedMicroButton.m */; };
 		22276E8713C73D8A00210156 /* CoreVideo.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 22276E8613C73D8A00210156 /* CoreVideo.framework */; settings = {ATTRIBUTES = (Weak, ); }; };
 		22276E8913C73DC000210156 /* CoreMedia.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 22276E8813C73DC000210156 /* CoreMedia.framework */; settings = {ATTRIBUTES = (Weak, ); }; };
 		22405EEE1600B4E400B92522 /* AssetsLibrary.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 22405EED1600B4E400B92522 /* AssetsLibrary.framework */; };
@@ -849,8 +849,8 @@
 		2214EB7912F846B1002A5394 /* UICallButton.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = UICallButton.m; sourceTree = "<group>"; };
 		2214EB8712F84EBB002A5394 /* UIHangUpButton.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = UIHangUpButton.h; sourceTree = "<group>"; };
 		2214EB8812F84EBB002A5394 /* UIHangUpButton.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = UIHangUpButton.m; sourceTree = "<group>"; };
-		2214EBF112F86360002A5394 /* UIMicroButton.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = UIMicroButton.h; sourceTree = "<group>"; };
-		2214EBF212F86360002A5394 /* UIMicroButton.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = UIMicroButton.m; sourceTree = "<group>"; };
+		2214EBF112F86360002A5394 /* UIMutedMicroButton.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = UIMutedMicroButton.h; sourceTree = "<group>"; };
+		2214EBF212F86360002A5394 /* UIMutedMicroButton.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = UIMutedMicroButton.m; sourceTree = "<group>"; };
 		22276E8013C73D3100210156 /* libavcodec.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = libavcodec.a; path = "liblinphone-sdk/apple-darwin/lib/libavcodec.a"; sourceTree = "<group>"; };
 		22276E8113C73D3100210156 /* libavutil.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = libavutil.a; path = "liblinphone-sdk/apple-darwin/lib/libavutil.a"; sourceTree = "<group>"; };
 		22276E8213C73D3100210156 /* libswscale.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = libswscale.a; path = "liblinphone-sdk/apple-darwin/lib/libswscale.a"; sourceTree = "<group>"; };
@@ -2060,8 +2060,8 @@
 				634610051B61330300548952 /* UILabel+Boldify.m */,
 				D306459C1611EC2900BB571E /* UILoadingImageView.h */,
 				D306459D1611EC2900BB571E /* UILoadingImageView.m */,
-				2214EBF112F86360002A5394 /* UIMicroButton.h */,
-				2214EBF212F86360002A5394 /* UIMicroButton.m */,
+				2214EBF112F86360002A5394 /* UIMutedMicroButton.h */,
+				2214EBF212F86360002A5394 /* UIMutedMicroButton.m */,
 				D36FB2D31589EF7C0036F6F2 /* UIPauseButton.h */,
 				D36FB2D41589EF7C0036F6F2 /* UIPauseButton.m */,
 				6316FA6B1BE12A3E0050E441 /* UIRightImageButton.h */,
@@ -3708,7 +3708,7 @@
 				6352A5751BE0D4B800594C1C /* CallSideMenuView.m in Sources */,
 				2214EB8912F84EBB002A5394 /* UIHangUpButton.m in Sources */,
 				630CF5571AF7CE1500539F7A /* UITextField+DoneButton.m in Sources */,
-				2214EBF312F86360002A5394 /* UIMicroButton.m in Sources */,
+				2214EBF312F86360002A5394 /* UIMutedMicroButton.m in Sources */,
 				22968A5F12F875C600588287 /* UISpeakerButton.m in Sources */,
 				63701DDF1BA32039006A9AE3 /* UIConfirmationDialog.m in Sources */,
 				22C755601317E59C007BC101 /* UIBluetoothButton.m in Sources */,
diff --git a/linphone_Prefix.pch b/linphone_Prefix.pch
index 7bc9a548d..e81415137 100644
--- a/linphone_Prefix.pch
+++ b/linphone_Prefix.pch
@@ -13,6 +13,6 @@
 #import "UIToggleButton.h"
 #import "UISpeakerButton.h"
 #import "UIBluetoothButton.h"
-#import "UIMicroButton.h"
+#import "UIMutedMicroButton.h"
 
 #import "UIChatBubbleTextCell.h"
diff --git a/submodules/linphone b/submodules/linphone
index 3df1f98d8..b0c878028 160000
--- a/submodules/linphone
+++ b/submodules/linphone
@@ -1 +1 @@
-Subproject commit 3df1f98d88c2fe665c05601ee1c3c52f006eb4a7
+Subproject commit b0c8780281c121d4ca1cf7310c81ea9f861b5318