diff --git a/app/assets/styles/blink/_ConferenceBox.scss b/app/assets/styles/blink/_ConferenceBox.scss
index 67dbe49..340b964 100644
--- a/app/assets/styles/blink/_ConferenceBox.scss
+++ b/app/assets/styles/blink/_ConferenceBox.scss
@@ -1,42 +1,54 @@
 .container {
     flex: 1;
 }
 
 .button {
     background-color: white;
     margin: 8px;
 }
 
+.iosButton {
+    background-color: white;
+    margin: 8px;
+    padding-top: 4px;
+}
+
+.androidButton {
+    background-color: white;
+    margin: 8px;
+}
+
+
 .conferenceContainer {
     position: absolute;
     bottom: 0;
     left: 0;
     right: 0;
     top: 0;
     align-content: flex-end;
 }
 
 .videosContainer {
     flex: 1;
 }
 
 .hangupButton {
     background-color: rgba(#a94442, .8);
 }
 
 .wholePageVideo {
     width: 100%;
     height: 100%;
 }
 
 .buttonContainer {
     flex-direction: row;
     margin: 0 auto;
 }
 
 .carouselContainer {
     position: absolute;
     bottom: 10;
     left: 0;
     right: 0;
 }
diff --git a/app/assets/styles/blink/_VideoBox.scss b/app/assets/styles/blink/_VideoBox.scss
index 85afc23..048a7bb 100644
--- a/app/assets/styles/blink/_VideoBox.scss
+++ b/app/assets/styles/blink/_VideoBox.scss
@@ -1,49 +1,61 @@
 .container {
     flex: 1;
 }
 
 .remoteVideoContainer {
     position: absolute;
     left: 0;
     right: 0;
     top: 50;
     bottom: 0;
 }
 
 .localVideoContainer {
     justify-content: flex-end;
 }
 
 .video {
     width: 100%;
     height: 100%;
     object-fit: cover;
     background-color: red;
 }
 
 .localVideo {
     position: absolute;
     height: 80px;
     width: 100px;
     object-fit: cover;
     background-color: white;
     top: 10;
     left: 10;
     border-radius: 10px;
 }
 
 .buttonContainer {
     flex-direction: row;
     margin: 0 auto;
     bottom: 30;
 }
 
 .button {
     background-color: rgba(#F9F9F9, .7);
     margin: 10px;
     padding-top: 5px;
 }
 
+.iosButton {
+    background-color: rgba(#F9F9F9, .7);
+    margin: 10px;
+    padding-top: 5px;
+}
+
+.androidButton {
+    background-color: rgba(#F9F9F9, .7);
+    margin: 10px;
+    padding-top: 1px;
+}
+
 .hangupButton {
     background-color: rgba(#a94442, .5);
 }
diff --git a/app/components/ConferenceBox.js b/app/components/ConferenceBox.js
index c9e7b35..ae6ae8e 100644
--- a/app/components/ConferenceBox.js
+++ b/app/components/ConferenceBox.js
@@ -1,712 +1,713 @@
 'use strict';
 
 import React, {Component, Fragment} from 'react';
-import { View } from 'react-native';
+import { View, Platform } from 'react-native';
 import PropTypes from 'prop-types';
 import * as sylkrtc from 'sylkrtc';
 import classNames from 'classnames';
 import debug from 'react-native-debug';
 import superagent from 'superagent';
 import autoBind from 'auto-bind';
 import { RTCView } from 'react-native-webrtc';
 import { IconButton, Appbar, Portal, Modal, Surface, Paragraph } from 'react-native-paper';
 
 import config from '../config';
 import utils from '../utils';
 //import AudioPlayer from './AudioPlayer';
 import ConferenceDrawer from './ConferenceDrawer';
 import ConferenceDrawerLog from './ConferenceDrawerLog';
 // import ConferenceDrawerFiles from './ConferenceDrawerFiles';
 import ConferenceDrawerParticipant from './ConferenceDrawerParticipant';
 import ConferenceDrawerParticipantList from './ConferenceDrawerParticipantList';
 import ConferenceDrawerSpeakerSelection from './ConferenceDrawerSpeakerSelection';
 import ConferenceHeader from './ConferenceHeader';
 import ConferenceCarousel from './ConferenceCarousel';
 import ConferenceParticipant from './ConferenceParticipant';
 import ConferenceMatrixParticipant from './ConferenceMatrixParticipant';
 import ConferenceParticipantSelf from './ConferenceParticipantSelf';
 import InviteParticipantsModal from './InviteParticipantsModal';
 
 import styles from '../assets/styles/blink/_ConferenceBox.scss';
 
 const DEBUG = debug('blinkrtc:ConferenceBox');
 debug.enable('*');
 
 class ConferenceBox extends Component {
     constructor(props) {
         super(props);
         autoBind(this);
         this.state = {
             callOverlayVisible: true,
             audioMuted: false,
             videoMuted: false,
             participants: props.call.participants.slice(),
             showInviteModal: false,
             showDrawer: false,
             showFiles: false,
             shareOverlayVisible: false,
             activeSpeakers: props.call.activeParticipants.slice(),
             selfDisplayedLarge: false,
             eventLog: [],
             sharedFiles: props.call.sharedFiles.slice(),
             largeVideoStream: null
         };
 
         const friendlyName = this.props.remoteIdentity.split('@')[0];
         //if (window.location.origin.startsWith('file://')) {
             this.callUrl = `${config.publicUrl}/conference/${friendlyName}`;
         //} else {
         //    this.callUrl = `${window.location.origin}/conference/${friendlyName}`;
         //}
 
         const emailMessage  = `You can join me in the conference using a Web browser at ${this.callUrl} ` +
                              'or by using the freely available Sylk WebRTC client app at http://sylkserver.com';
         const subject       = 'Join me, maybe?';
 
         this.emailLink = `mailto:?subject=${encodeURI(subject)}&body=${encodeURI(emailMessage)}`;
 
         this.overlayTimer = null;
         this.logEvent = {};
         this.haveVideo = false;
         this.uploads = [];
 
         [
             'error',
             'warning',
             'info',
             'debug'
         ].forEach((level) => {
             this.logEvent[level] = (
                 (action, messages, originator) => {
                     const log = this.state.eventLog.slice();
                     log.unshift({originator, originator, level: level, action: action, messages: messages});
                     this.setState({eventLog: log});
                 }
             );
         });
     }
 
     componentDidMount() {
         for (let p of this.state.participants) {
             p.on('stateChanged', this.onParticipantStateChanged);
             p.attach();
         }
         this.props.call.on('participantJoined', this.onParticipantJoined);
         this.props.call.on('participantLeft', this.onParticipantLeft);
         this.props.call.on('roomConfigured', this.onConfigureRoom);
         this.props.call.on('fileSharing', this.onFileSharing);
 
         this.armOverlayTimer();
 
         // attach to ourselves first if there are no other participants
         if (this.state.participants.length === 0) {
             setTimeout(() => {
                 const item = {
                     stream: this.props.call.getLocalStreams()[0],
                     identity: this.props.call.localIdentity
                 };
                 this.selectVideo(item);
             });
         } else {
             // this.changeResolution();
         }
 
         if (this.props.call.getLocalStreams()[0].getVideoTracks().length !== 0) {
             this.haveVideo = true;
         }
     }
 
     componentWillUnmount() {
         clearTimeout(this.overlayTimer);
         this.uploads.forEach((upload) => {
             this.props.notificationCenter().removeNotification(upload[1]);
             upload[0].abort();
         })
     }
 
     onParticipantJoined(p) {
         DEBUG(`Participant joined: ${p.identity}`);
         // this.refs.audioPlayerParticipantJoined.play();
         p.on('stateChanged', this.onParticipantStateChanged);
         p.attach();
         this.setState({
             participants: this.state.participants.concat([p])
         });
         // this.changeResolution();
     }
 
     onParticipantLeft(p) {
         DEBUG(`Participant left: ${p.identity}`);
         // this.refs.audioPlayerParticipantLeft.play();
         const participants = this.state.participants.slice();
         const idx = participants.indexOf(p);
         if (idx !== -1) {
             participants.splice(idx, 1);
             this.setState({
                 participants: participants
             });
         }
         p.detach(true);
         // this.changeResolution();
     }
 
     onParticipantStateChanged(oldState, newState) {
         if (newState === 'established' || newState === null) {
             this.maybeSwitchLargeVideo();
         }
     }
 
     onConfigureRoom(config) {
         const newState = {};
         newState.activeSpeakers = config.activeParticipants;
         this.setState(newState);
 
         if (config.activeParticipants.length === 0) {
             this.logEvent.info('set speakers to', ['Nobody'], config.originator);
         } else {
             const speakers = config.activeParticipants.map((p) => {return p.identity.displayName || p.identity.uri});
             this.logEvent.info('set speakers to', speakers, config.originator);
         }
         this.maybeSwitchLargeVideo();
     }
 
     onFileSharing(files) {
         let stateFiles = this.state.sharedFiles.slice();
         stateFiles = stateFiles.concat(files);
         this.setState({sharedFiles: stateFiles});
         files.forEach((file)=>{
             if (file.session !== this.props.call.id) {
                 this.props.notificationCenter().postFileShared(file, this.showFiles);
             }
         })
     }
 
     changeResolution() {
         let stream = this.props.call.getLocalStreams()[0];
         if (this.state.participants.length < 2) {
             this.props.call.scaleLocalTrack(stream, 1.5);
         } else if (this.state.participants.length < 5) {
             this.props.call.scaleLocalTrack(stream, 2);
         } else {
             this.props.call.scaleLocalTrack(stream, 1);
         }
     }
 
     selectVideo(item) {
         DEBUG('Switching video to: %o', item);
         if (item.stream) {
             this.setState({selfDisplayedLarge: true, largeVideoStream: item.stream});
         }
     }
 
     maybeSwitchLargeVideo() {
         // Switch the large video to another source, maybe.
         if (this.state.participants.length === 0 && !this.state.selfDisplayedLarge) {
             // none of the participants are eligible, show ourselves
             const item = {
                 stream: this.props.call.getLocalStreams()[0],
                 identity: this.props.call.localIdentity
             };
             this.selectVideo(item);
         } else if (this.state.selfDisplayedLarge) {
             this.setState({selfDisplayedLarge: false});
         }
     }
 
     handleClipboardButton() {
         utils.copyToClipboard(this.callUrl);
         this.props.notificationCenter().postSystemNotification('Join me, maybe?', {body: 'Link copied to the clipboard'});
         this.setState({shareOverlayVisible: false});
     }
 
     handleEmailButton(event) {
         // if (navigator.userAgent.indexOf('Chrome') > 0) {
         //     let emailWindow = window.open(this.emailLink, '_blank');
         //     setTimeout(() => {
         //         emailWindow.close();
         //     }, 500);
         // } else {
         //     window.open(this.emailLink, '_self');
         // }
         this.setState({shareOverlayVisible: false});
     }
 
     handleShareOverlayEntered() {
         this.setState({shareOverlayVisible: true});
     }
 
     handleShareOverlayExited() {
         this.setState({shareOverlayVisible: false});
     }
 
     handleActiveSpeakerSelected(participant, secondVideo=false) {      // eslint-disable-line space-infix-ops
         let newActiveSpeakers = this.state.activeSpeakers.slice();
         if (secondVideo) {
             if (participant.id !== 'none') {
                 if (newActiveSpeakers.length >= 1) {
                     newActiveSpeakers[1] = participant;
                 } else {
                     newActiveSpeakers[0] = participant;
                 }
             } else {
                 newActiveSpeakers.splice(1,1);
             }
         } else {
             if (participant.id !== 'none') {
                 newActiveSpeakers[0] = participant;
             } else {
                 newActiveSpeakers.shift();
             }
         }
         this.props.call.configureRoom(newActiveSpeakers.map((element) => element.publisherId), (error) => {
             if (error) {
                 // This causes a state update, hence the drawer lists update
                 this.logEvent.error('set speakers failed', [], this.localIdentity);
             }
         });
     }
 
     handleDrop(files) {
         DEBUG('Dropped file %o', files);
         this.uploadFiles(files);
     };
 
     handleFiles(e) {
         DEBUG('Selected files %o', e.target.files);
         this.uploadFiles(e.target.files);
         event.target.value = '';
     }
 
     uploadFiles(files) {
         for (var key in files) {
             // is the item a File?
             if (files.hasOwnProperty(key) && files[key] instanceof File) {
                 let uploadRequest;
                 let complete = false;
                 const filename = files[key].name
                 let progressNotification = this.props.notificationCenter().postFileUploadProgress(
                     filename,
                     (notification) => {
                         if (!complete) {
                             uploadRequest.abort();
                             this.uploads.splice(this.uploads.indexOf(uploadRequest), 1);
                         }
                     }
                 );
                 uploadRequest = superagent
                 .post(`${config.fileSharingUrl}/${this.props.remoteIdentity}/${this.props.call.id}/${filename}`)
                 .send(files[key])
                 .on('progress', (e) => {
                     this.props.notificationCenter().editFileUploadNotification(e.percent, progressNotification);
                 })
                 .end((err, response) => {
                     complete = true;
                     this.props.notificationCenter().removeFileUploadNotification(progressNotification);
                     if (err) {
                         this.props.notificationCenter().postFileUploadFailed(filename);
                     }
                     this.uploads.splice(this.uploads.indexOf(uploadRequest), 1);
                 });
                 this.uploads.push([uploadRequest, progressNotification]);
             }
         }
     }
 
     downloadFile(filename) {
         // const a = document.createElement('a');
         // a.href = `${config.fileSharingUrl}/${this.props.remoteIdentity}/${this.props.call.id}/${filename}`;
         // a.target = '_blank';
         // a.download = filename;
         // const clickEvent = document.createEvent('MouseEvent');
         // clickEvent.initMouseEvent('click', true, true, window, 0,
         //     clickEvent.screenX, clickEvent.screenY, clickEvent.clientX, clickEvent.clientY,
         //     clickEvent.ctrlKey, clickEvent.altKey, clickEvent.shiftKey, clickEvent.metaKey,
         //     0, null);
         // a.dispatchEvent(clickEvent);
     }
 
     preventOverlay(event) {
         // Stop the overlay when we are the thumbnail bar
         event.stopPropagation();
     }
 
     muteAudio(event) {
         event.preventDefault();
         const localStream = this.props.call.getLocalStreams()[0];
         if (localStream.getAudioTracks().length > 0) {
             const track = localStream.getAudioTracks()[0];
             if(this.state.audioMuted) {
                 DEBUG('Unmute microphone');
                 track.enabled = true;
                 this.setState({audioMuted: false});
             } else {
                 DEBUG('Mute microphone');
                 track.enabled = false;
                 this.setState({audioMuted: true});
             }
         }
     }
 
     toggleCamera(event) {
         event.preventDefault();
         const localStream = this.props.call.getLocalStreams()[0];
         if (localStream.getVideoTracks().length > 0) {
             const track = localStream.getVideoTracks()[0];
             track._switchCamera();
         }
     }
 
     muteVideo(event) {
         event.preventDefault();
         const localStream = this.props.call.getLocalStreams()[0];
         if (localStream.getVideoTracks().length > 0) {
             const track = localStream.getVideoTracks()[0];
             if (this.state.videoMuted) {
                 DEBUG('Unmute camera');
                 track.enabled = true;
                 this.setState({videoMuted: false});
             } else {
                 DEBUG('Mute camera');
                 track.enabled = false;
                 this.setState({videoMuted: true});
             }
         }
     }
 
     hangup(event) {
         event.preventDefault();
         for (let participant of this.state.participants) {
             participant.detach();
         }
         this.props.hangup();
     }
 
     armOverlayTimer() {
         clearTimeout(this.overlayTimer);
         this.overlayTimer = setTimeout(() => {
             this.setState({callOverlayVisible: false});
         }, 4000);
     }
 
     showOverlay() {
         // if (!this.state.shareOverlayVisible && !this.state.showDrawer && !this.state.showFiles) {
         //     if (!this.state.callOverlayVisible) {
         //         this.setState({callOverlayVisible: true});
         //     }
         //     this.armOverlayTimer();
         // }
     }
 
     toggleInviteModal() {
         this.setState({showInviteModal: !this.state.showInviteModal});
     }
 
     toggleDrawer() {
         this.setState({callOverlayVisible: true, showDrawer: !this.state.showDrawer, showFiles: false});
         clearTimeout(this.overlayTimer);
     }
 
     toggleFiles() {
         this.setState({callOverlayVisible: true, showFiles: !this.state.showFiles, showDrawer: false});
         clearTimeout(this.overlayTimer);
     }
 
     showFiles() {
         this.setState({callOverlayVisible: true, showFiles: true, showDrawer: false});
         clearTimeout(this.overlayTimer);
     }
 
     render() {
         if (this.props.call === null) {
             return (<View></View>);
         }
 
         let watermark;
 
         const largeVideoClasses = classNames({
             'animated'      : true,
             'fadeIn'        : true,
             'large'         : true,
             'mirror'        : !this.props.call.sharingScreen && !this.props.generatedVideoTrack,
             'fit'           : this.props.call.sharingScreen
         });
 
         let matrixClasses = classNames({
             'matrix'        : true
         });
 
         const containerClasses = classNames({
             'video-container': true,
             'conference': true,
             'drawer-visible': this.state.showDrawer || this.state.showFiles
         });
 
         const remoteIdentity = this.props.remoteIdentity.split('@')[0];
 
         // const shareOverlay = (
         //     <Portal>
         //         <Modal>
         //             <Surface>
         //                 <Paragraph>
         //                     Invite other online users of this service, share <strong><a href={this.callUrl} target="_blank" rel="noopener noreferrer">this link</a></strong> with others or email, so they can easily join this conference.
         //                 </Paragraph>
         //                 <View className="text-center">
         //                     <View className="btn-group">
         //                         <IconButton
         //                             size={30}
         //                             onPress={this.toggleInviteModal}
         //                             icon="account-plus"
         //                         />
         //                         <IconButton className="btn btn-primary" onPress={this.handleClipboardButton} icon="copy" />
         //                         <IconButton className="btn btn-primary" onPress={this.handleEmailButton} alt="Send email" icon="email" />
         //                     </View>
         //                 </View>
         //             </Surface>
         //         </Modal>
         //     </Portal>
         // );
 
         const buttons = {};
 
         // const commonButtonTopClasses = classNames({
         //     'btn'           : true,
         //     'btn-link'      : true
         // });
 
         // const fullScreenButtonIcons = classNames({
         //     'fa'            : true,
         //     'fa-2x'         : true,
         //     'fa-expand'     : !this.isFullScreen(),
         //     'fa-compress'   : this.isFullScreen()
         // });
 
         const topButtons = [];
 
         // if (!this.state.showFiles) {
         //     if (this.state.sharedFiles.length !== 0) {
         //         topButtons.push(
         //             <Badge badgeContent={this.state.sharedFiles.length} color="primary" classes={{badge: this.props.classes.badge}}>
         //                 <button key="fbButton" type="button" title="Open Drawer" className={commonButtonTopClasses} onPress={this.toggleFiles}> <i className="fa fa-files-o fa-2x"></i> </button>
         //             </Badge>
         //         );
         //     }
         // }
 
         if (!this.state.showDrawer) {
             topButtons.push(<Appbar.Action key="sbButton" title="Open Drawer" onPress={this.toggleDrawer} icon="menu" />);
         }
 
         buttons.top = {right: topButtons};
 
         const muteButtonIcons = this.state.audioMuted ? 'microphone-off' : 'microphone';
         const muteVideoButtonIcons = this.state.videoMuted ? 'video-off' : 'video';
+        const buttonClass = (Platform.OS === 'ios') ? styles.iosButton : styles.androidButton;
 
         const bottomButtons = [];
         bottomButtons.push(
             <IconButton
                 size={30}
-                style={styles.button}
+                style={buttonClass}
                 title="Share link to this conference"
                 icon="account-plus"
                 onPress={this.toggleInviteModal}
             />
         );
         bottomButtons.push(
             <IconButton
                 size={30}
-                style={styles.button}
+                style={buttonClass}
                 title="Mute/unmute video"
                 onPress={this.muteVideo}
                 icon={muteVideoButtonIcons}
             />
         );
         bottomButtons.push(
             <IconButton
                 size={30}
-                style={styles.button}
+                style={buttonClass}
                 title="Mute/unmute audio"
                 onPress={this.muteAudio}
                 icon={muteButtonIcons}
             />
         );
         bottomButtons.push(
             <IconButton
                 size={30}
-                style={styles.button}
+                style={buttonClass}
                 title="Toggle camera"
                 onPress={this.toggleCamera}
                 icon='video-switch'
             />
         );
         bottomButtons.push(
             <IconButton
                 size={30}
-                style={styles.button}
+                style={buttonClass}
                 icon={this.props.speakerPhoneEnabled ? 'volume-high' : 'volume-off'}
                 onPress={this.props.toggleSpeakerPhone}
             />
         )
         // bottomButtons.push(
         //     <View key="shareFiles">
-        //         <IconButton size={30} style={styles.button} title="Share files" component="span" disableRipple={true} icon="upload"/>
+        //         <IconButton size={30} style={buttonClass} title="Share files" component="span" disableRipple={true} icon="upload"/>
         //     </View>
         // );
 
         bottomButtons.push(
             <IconButton
                 size={30}
-                style={[styles.button, styles.hangupButton]}
+                style={[buttonClass, styles.hangupButton]}
                 title="Leave conference"
                 onPress={this.hangup}
                 icon="phone-hangup"
             />
         );
         buttons.bottom = bottomButtons;
 
         const participants = [];
 
         if (this.state.participants.length > 0) {
             if (this.state.activeSpeakers.findIndex((element) => {return element.id === this.props.call.id}) === -1) {
                 participants.push(
                     <ConferenceParticipantSelf
                         key="myself2"
                         stream={this.props.call.getLocalStreams()[0]}
                         identity={this.props.call.localIdentity}
                         audioMuted={this.state.audioMuted}
                         generatedVideoTrack={this.props.generatedVideoTrack}
                     />
                 );
             }
         }
 
         const drawerParticipants = [];
         drawerParticipants.push(
             <ConferenceDrawerParticipant
                 key="myself1"
                 participant={{identity: this.props.call.localIdentity}}
                 isLocal={true}
             />
         );
 
         let videos = [];
         if (this.state.participants.length === 0) {
             videos.push(
                 <RTCView objectFit="cover" style={styles.wholePageVideo} ref="largeVideo" poster="assets/images/transparent-1px.png" streamURL={this.state.largeVideoStream ? this.state.largeVideoStream.toURL() : null} />
             );
         } else {
             const activeSpeakers = this.state.activeSpeakers;
             const activeSpeakersCount = activeSpeakers.length;
 
             if (activeSpeakersCount > 0) {
                 activeSpeakers.forEach((p) => {
                     videos.push(
                         <ConferenceMatrixParticipant
                             key={p.id}
                             participant={p}
                             large={activeSpeakers.length <= 1}
                             isLocal={p.id === this.props.call.id}
                         />
                     );
                 });
 
                 this.state.participants.forEach((p) => {
                     if (this.state.activeSpeakers.indexOf(p) === -1) {
                         participants.push(
                             <ConferenceParticipant
                                 key={p.id}
                                 participant={p}
                                 selected={this.onVideoSelected}
                             />
                         );
                     }
 
                     drawerParticipants.push(
                         <ConferenceDrawerParticipant
                             key={p.id}
                             participant={p}
                         />
                     );
                 });
             } else {
 
                 this.state.participants.forEach((p) => {
                     videos.push(
                         <ConferenceMatrixParticipant
                             key = {p.id}
                             participant = {p}
                             large = {this.state.participants.length <= 1}
                         />
                     );
 
                     drawerParticipants.push(
                         <ConferenceDrawerParticipant
                             key={p.id}
                             participant={p}
                         />
                     );
                 });
             }
         }
 
         // let filesDrawerContent = (
         //     <ConferenceDrawerFiles
         //         sharedFiles={this.state.sharedFiles}
         //         downloadFile={this.downloadFile}
         //     />
         // );
 
         return (
             <View style={styles.container}>
                 <ConferenceHeader
                     show={true}
                     remoteIdentity={remoteIdentity}
                     participants={this.state.participants}
                     buttons={buttons}
                 />
                 <View style={styles.conferenceContainer}>
                     <View style={styles.videosContainer}>
                         {videos}
                     </View>
                     <View style={styles.carouselContainer}>
                         <ConferenceCarousel align={'right'}>
                             {participants}
                         </ConferenceCarousel>
                     </View>
                 </View>
 
                 <InviteParticipantsModal
                     show={this.state.showInviteModal}
                     call={this.props.call}
                     close={this.toggleInviteModal}
                 />
 
                 <ConferenceDrawer
                     show={this.state.showDrawer}
                     close={this.toggleDrawer}
                 >
                     <ConferenceDrawerSpeakerSelection
                         participants={this.state.participants.concat([{id: this.props.call.id, publisherId: this.props.call.id, identity: this.props.call.localIdentity}])}
                         selected={this.handleActiveSpeakerSelected}
                         activeSpeakers={this.state.activeSpeakers}
                     />
                     <ConferenceDrawerParticipantList>
                         {drawerParticipants}
                     </ConferenceDrawerParticipantList>
                     <ConferenceDrawerLog log={this.state.eventLog} />
                 </ConferenceDrawer>
             </View>
         );
     }
 }
 
 ConferenceBox.propTypes = {
     notificationCenter  : PropTypes.func.isRequired,
     call                : PropTypes.object,
     hangup              : PropTypes.func,
     remoteIdentity      : PropTypes.string,
     generatedVideoTrack : PropTypes.bool,
     toggleSpeakerPhone      : PropTypes.func,
     speakerPhoneEnabled     : PropTypes.bool
 };
 
 export default ConferenceBox;
diff --git a/app/components/VideoBox.js b/app/components/VideoBox.js
index 3aceecc..8758a36 100644
--- a/app/components/VideoBox.js
+++ b/app/components/VideoBox.js
@@ -1,402 +1,402 @@
 import React, { Component } from 'react';
 import PropTypes from 'prop-types';
 import classNames from 'classnames';
 import debug from 'react-native-debug';
 import autoBind from 'auto-bind';
 import { IconButton } from 'react-native-paper';
-import { View, Dimensions, TouchableOpacity  } from 'react-native';
+import { View, Dimensions, TouchableOpacity, Platform  } from 'react-native';
 import { RTCView } from 'react-native-webrtc';
 
 import CallOverlay from './CallOverlay';
 import EscalateConferenceModal from './EscalateConferenceModal';
 import DTMFModal from './DTMFModal';
 import config from '../config';
 import dtmf from 'react-native-dtmf';
 
 import styles from '../assets/styles/blink/_VideoBox.scss';
 
 const DEBUG = debug('blinkrtc:Video');
 debug.enable('*');
 
 class VideoBox extends Component {
     constructor(props) {
         super(props);
         autoBind(this);
 
         this.state = {
             callOverlayVisible: true,
             audioMuted: false,
             videoMuted: false,
             localVideoShow: false,
             remoteVideoShow: false,
             remoteSharesScreen: false,
             showEscalateConferenceModal: false,
             localStream: null,
             remoteStream: null,
             showDtmfModal: false,
             doorOpened: false
         };
 
         this.overlayTimer = null;
         this.localVideo = React.createRef();
         this.remoteVideo = React.createRef();
     }
 
     callStateChanged(oldState, newState, data) {
         DEBUG(`Call state changed ${oldState} -> ${newState}`);
         if (newState === 'established') {
             this.forceUpdate();
         }
     }
 
     openDoor() {
         const tone = config.intercomDtmfTone;
         DEBUG('DTMF tone sent to intercom: ' + tone);
         this.setState({doorOpened: true});
         this.forceUpdate();
 
         dtmf.stopTone(); //don't play a tone at the same time as another
         dtmf.playTone(dtmf['DTMF_' + tone], 1000);
 
         if (this.props.call !== null && this.props.call.state === 'established') {
             this.props.call.sendDtmf(tone);
             /*this.props.notificationCenter.postSystemNotification('Door opened', {timeout: 5});*/
         }
     }
 
     componentDidMount() {
 
         console.log('localStreams', this.props.call.getLocalStreams());
         console.log('remoteStreams', this.props.call.getRemoteStreams());
 
         this.setState({localStream: this.props.call.getLocalStreams()[0], localVideoShow: true, remoteStream: this.props.call.getRemoteStreams()[0], remoteVideoShow: true});
 
         this.props.call.on('stateChanged', this.callStateChanged);
 
 
         // sylkrtc.utils.attachMediaStream(, this.localVideo.current, {disableContextMenu: true});
         // let promise =  this.localVideo.current.play()
         // if (promise !== undefined) {
         //     promise.then(_ => {
         //         this.setState({localVideoShow: true});    // eslint-disable-line react/no-did-mount-set-state
         //         // Autoplay started!
         //     }).catch(error => {
         //         // Autoplay was prevented.
         //         // Show a "Play" button so that user can start playback.
         //     });
         // } else {
         //     this.localVideo.current.addEventListener('playing', () => {
         //         this.setState({});    // eslint-disable-line react/no-did-mount-set-state
         //     });
         // }
 
         // this.remoteVideo.current.addEventListener('playing', this.handleRemoteVideoPlaying);
         // sylkrtc.utils.attachMediaStream(this.props.call.getRemoteStreams()[0], this.remoteVideo.current, {disableContextMenu: true});
     }
 
     componentWillUnmount() {
         // clearTimeout(this.overlayTimer);
         // this.remoteVideo.current.removeEventListener('playing', this.handleRemoteVideoPlaying);
         // this.exitFullscreen();
     }
 
     showDtmfModal() {
         this.setState({showDtmfModal: true});
     }
 
     hideDtmfModal() {
         this.setState({showDtmfModal: false});
     }
 
     handleFullscreen(event) {
         event.preventDefault();
         // this.toggleFullscreen();
     }
 
     handleRemoteVideoPlaying() {
         this.setState({remoteVideoShow: true});
         // this.remoteVideo.current.onresize = (event) => {
         //     this.handleRemoteResize(event)
         // };
         // this.armOverlayTimer();
     }
 
     handleRemoteResize(event, target) {
         //DEBUG("%o", event);
         const resolutions = [ '1280x720', '960x540', '640x480', '640x360', '480x270','320x180'];
         const videoResolution = event.target.videoWidth + 'x' + event.target.videoHeight;
         if (resolutions.indexOf(videoResolution) === -1) {
             this.setState({remoteSharesScreen: true});
         } else {
             this.setState({remoteSharesScreen: false});
         }
     }
 
     muteAudio(event) {
         event.preventDefault();
         const localStream = this.state.localStream;
         if (localStream.getAudioTracks().length > 0) {
             //const track = localStream.getAudioTracks()[0];
             if(this.state.audioMuted) {
                 DEBUG('Unmute microphone');
                 //track.enabled = true;
                 this.props.callKeepToggleMute(false);
                 this.setState({audioMuted: false});
             } else {
                 DEBUG('Mute microphone');
                 // track.enabled = false;
                 this.props.callKeepToggleMute(true);
 
                 this.setState({audioMuted: true});
             }
         }
     }
 
     muteVideo(event) {
         event.preventDefault();
         const localStream = this.state.localStream;
         if (localStream.getVideoTracks().length > 0) {
             const track = localStream.getVideoTracks()[0];
             if(this.state.videoMuted) {
                 DEBUG('Unmute camera');
                 track.enabled = true;
                 this.setState({videoMuted: false});
             } else {
                 DEBUG('Mute camera');
                 track.enabled = false;
                 this.setState({videoMuted: true});
             }
         }
     }
 
     toggleCamera(event) {
         event.preventDefault();
         const localStream = this.state.localStream;
         if (localStream.getVideoTracks().length > 0) {
             const track = localStream.getVideoTracks()[0];
             track._switchCamera();
         }
     }
 
     hangupCall(event) {
         event.preventDefault();
         this.props.hangupCall();
     }
 
     escalateToConference(participants) {
         this.props.escalateToConference(participants);
     }
 
     armOverlayTimer() {
         clearTimeout(this.overlayTimer);
         this.overlayTimer = setTimeout(() => {
             this.setState({callOverlayVisible: false});
         }, 4000);
     }
 
     showCallOverlay() {
         if (this.state.remoteVideoShow) {
             this.setState({callOverlayVisible: true});
             this.armOverlayTimer();
         }
     }
 
     toggleEscalateConferenceModal() {
         this.setState({
             callOverlayVisible          : false,
             showEscalateConferenceModal : !this.state.showEscalateConferenceModal
         });
     }
 
     render() {
         if (this.props.call == null) {
             return null;
         }
 
         const localVideoClasses = classNames({
             'video-thumbnail' : true,
             'mirror'          : !this.props.call.sharingScreen && !this.props.generatedVideoTrack,
             'hidden'          : !this.state.localVideoShow,
             'animated'        : true,
             'fadeIn'          : this.state.localVideoShow || this.state.videoMuted,
             'fadeOut'         : this.state.videoMuted,
             'fit'             : this.props.call.sharingScreen
         });
 
         const remoteVideoClasses = classNames({
             'poster'        : !this.state.remoteVideoShow,
             'animated'      : true,
             'fadeIn'        : this.state.remoteVideoShow,
             'large'         : true,
             'fit'           : this.state.remoteSharesScreen
         });
 
         let callButtons;
         let watermark;
 
         if (this.state.callOverlayVisible) {
             // const screenSharingButtonIcons = classNames({
             //     'fa'                    : true,
             //     'fa-clone'              : true,
             //     'fa-flip-horizontal'    : true,
             //     'text-warning'          : this.props.call.sharingScreen
             // });
 
             // const fullScreenButtonIcons = classNames({
             //     'fa'            : true,
             //     'fa-expand'     : !this.isFullScreen(),
             //     'fa-compress'   : this.isFullScreen()
             // });
 
             // const commonButtonClasses = classNames({
             //     'btn'           : true,
             //     'btn-round'     : true,
             //     'btn-default'   : true
             // });
             const buttons = [];
 
             // buttons.push(<Button key="shareScreen" type="button" title="Share screen" className={commonButtonClasses} onPress={this.props.shareScreen}><i className={screenSharingButtonIcons}></i></button>);
             // if (this.isFullscreenSupported()) {
             //     buttons.push(<button key="fsButton" type="button" className={commonButtonClasses} onPress={this.handleFullscreen}> <i className={fullScreenButtonIcons}></i> </button>);
             // }
             // buttons.push(<br key="break" />);
 
             // callButtons = (
             //     // <CSSTransition
             //     //     key="buttons"
             //     //     classNames="videobuttons"
             //     //     timeout={{ enter: 300, exit: 300}}
             //     // >
 
             //     // </CSSTransition>
             // );
         } else {
             // watermark = (
             //     <CSSTransition
             //         key="watermark"
             //         classNames="watermark"
             //         timeout={{enter: 600, exit: 300}}
             //     >
             //         <View className="watermark"></View>
             //     </CSSTransition>
             // );
         }
 
         console.log('local media stream in videobox', this.state);
 
         const muteButtonIcons = this.state.audioMuted ? 'microphone-off' : 'microphone';
         const muteVideoButtonIcons = this.state.videoMuted ? 'video-off' : 'video';
-
+        const buttonClass = (Platform.OS === 'ios') ? styles.iosButton : styles.androidButton;
 
         return (
             <View style={styles.container}>
                 {/*onMouseMove={this.showCallOverlay}*/}
                 <CallOverlay
                     show = {true}
                     remoteIdentity = {this.props.call.remoteIdentity}
                     call = {this.props.call}
                 />
                 {/* <TransitionGroup> */}
                     {/* {watermark} */}
                 {/* </TransitionGroup> */}
                 {this.state.remoteVideoShow ?
                     <View style={[styles.container, styles.remoteVideoContainer]}>
                         <RTCView objectFit='cover' style={[styles.video, styles.remoteVideo]} poster="assets/images/transparent-1px.png" ref={this.remoteVideo} streamURL={this.state.remoteStream ? this.state.remoteStream.toURL() : null} />
                     </View>
                 : null }
                 { this.state.localVideoShow ?
                 <TouchableOpacity style={[styles.container, styles.localVideoContainer]} onPress={this.toggleCamera}>
                     <View style={[styles.container, styles.localVideoContainer]}>
                         <RTCView objectFit='cover' style={[styles.video, styles.localVideo]} ref={this.localVideo}
                         streamURL={this.state.localStream ? this.state.localStream.toURL() : null} mirror={true} />
                     </View>
                 </TouchableOpacity>
                 : null }
                 { config.intercomDtmfTone ?
                  <View style={styles.buttonContainer}>
                     <IconButton
                         size={50}
-                        style={styles.button}
+                        style={buttonClass}
                         icon={this.state.doorOpened ? "door-open": "door" }
                         onPress={this.openDoor}
                         disabled={!(this.props.call && this.props.call.state === 'established')}
                     />
                     <IconButton
                         size={34}
-                        style={[styles.button]}
+                        style={[buttonClass]}
                         icon={this.props.speakerPhoneEnabled ? 'volume-high' : 'volume-off'}
                         onPress={this.props.toggleSpeakerPhone}
                     />
                     <IconButton
                         size={50}
                         style={[styles.button, styles.hangupButton]}
                         onPress={this.hangupCall}
                         icon="phone-hangup"
                     />
                 </View>
                 :
                 <View style={styles.buttonContainer}>
                     <IconButton
                         size={34}
-                        style={styles.button}
+                        style={buttonClass}
                         onPress={this.toggleEscalateConferenceModal}
                         icon="account-plus"
                     />
                     <IconButton
                         size={34}
-                        style={styles.button}
+                        style={buttonClass}
                         onPress={this.muteAudio}
                         icon={muteButtonIcons}
                     />
                     <IconButton
                         size={34}
-                        style={styles.button}
+                        style={buttonClass}
                         onPress={this.muteVideo}
                         icon={muteVideoButtonIcons}
                     />
                     <IconButton
                         size={34}
-                        style={[styles.button]}
+                        style={[buttonClass]}
                         icon={this.props.speakerPhoneEnabled ? 'volume-high' : 'volume-off'}
                         onPress={this.props.toggleSpeakerPhone}
                     />
                     <IconButton
                         size={34}
-                        style={[styles.button, styles.hangupButton]}
+                        style={[buttonClass, styles.hangupButton]}
                         onPress={this.hangupCall}
                         icon="phone-hangup"
                     />
                 </View>
 
                 }
                 <DTMFModal
                     show={this.state.showDtmfModal}
                     hide={this.hideDtmfModal}
                     call={this.props.call}
                     callKeepSendDtmf={this.props.callKeepSendDtmf}
                 />
                 <EscalateConferenceModal
                     show={this.state.showEscalateConferenceModal}
                     call={this.props.call}
                     close={this.toggleEscalateConferenceModal}
                     escalateToConference={this.escalateToConference}
                 />
             </View>
         );
     }
 }
 
 VideoBox.propTypes = {
     call                    : PropTypes.object,
     localMedia              : PropTypes.object,
     hangupCall              : PropTypes.func,
     shareScreen             : PropTypes.func,
     escalateToConference    : PropTypes.func,
     generatedVideoTrack     : PropTypes.bool,
     callKeepSendDtmf        : PropTypes.func,
     callKeepToggleMute      : PropTypes.func,
     toggleSpeakerPhone      : PropTypes.func,
     speakerPhoneEnabled     : PropTypes.bool
 };
 
 export default VideoBox;