diff --git a/react/features/base/modal/components/JitsiKeyboardAvoidingView.js b/react/features/base/modal/components/JitsiKeyboardAvoidingView.js
index 740987642d..9d996d414b 100644
--- a/react/features/base/modal/components/JitsiKeyboardAvoidingView.js
+++ b/react/features/base/modal/components/JitsiKeyboardAvoidingView.js
@@ -1,8 +1,9 @@
 // @flow
 
 import { getDefaultHeaderHeight } from '@react-navigation/elements';
-import React, { useEffect, useState } from 'react';
+import React, { useCallback, useEffect, useState } from 'react';
 import {
+    Keyboard,
     KeyboardAvoidingView,
     Platform,
     StatusBar
@@ -78,6 +79,10 @@ const JitsiKeyboardAvoidingView = (
     const androidVerticalOffset = hasBottomTextInput
         ? deviceHeight + StatusBar.currentHeight : deviceHeight;
 
+    // Tells the view what to do with taps
+    const shouldSetResponse = useCallback(() => true);
+    const onRelease = useCallback(() => Keyboard.dismiss());
+
     return (
         <KeyboardAvoidingView
             behavior = { Platform.OS === 'ios' ? 'padding' : 'height' }
@@ -88,6 +93,8 @@ const JitsiKeyboardAvoidingView = (
                     ? iosVerticalOffset
                     : androidVerticalOffset
             }
+            onResponderRelease = { onRelease }
+            onStartShouldSetResponder = { shouldSetResponse }
             style = { style }>
             { children }
         </KeyboardAvoidingView>
diff --git a/react/features/base/modal/components/JitsiScreen.js b/react/features/base/modal/components/JitsiScreen.js
index ff868fcab8..2678aa8208 100644
--- a/react/features/base/modal/components/JitsiScreen.js
+++ b/react/features/base/modal/components/JitsiScreen.js
@@ -74,9 +74,9 @@ const JitsiScreen = ({
             <SafeAreaView
                 edges = { safeAreaInsets }
                 style = { styles.safeArea }>
-                { children }
+                {children}
             </SafeAreaView>
-            { footerComponent && footerComponent() }
+            {footerComponent && footerComponent()}
         </JitsiKeyboardAvoidingView>
     </View>
 );
diff --git a/react/features/conference/components/native/Conference.js b/react/features/conference/components/native/Conference.js
index 18d5bd88f2..99ed075cf7 100644
--- a/react/features/conference/components/native/Conference.js
+++ b/react/features/conference/components/native/Conference.js
@@ -22,12 +22,13 @@ import {
 } from '../../../filmstrip';
 import { CalleeInfoContainer } from '../../../invite';
 import { LargeVideo } from '../../../large-video';
+import { startKnocking } from '../../../lobby/actions.any';
 import { KnockingParticipantList } from '../../../lobby/components/native';
 import { getIsLobbyVisible } from '../../../lobby/functions';
 import { navigate }
     from '../../../mobile/navigation/components/conference/ConferenceNavigationContainerRef';
+import { shouldEnableAutoKnock } from '../../../mobile/navigation/functions';
 import { screen } from '../../../mobile/navigation/routes';
-import { setPictureInPictureEnabled } from '../../../mobile/picture-in-picture';
 import { Captions } from '../../../subtitles';
 import { setToolboxVisible } from '../../../toolbox/actions';
 import { Toolbox } from '../../../toolbox/components/native';
@@ -100,6 +101,11 @@ type Props = AbstractProps & {
      */
     _largeVideoParticipantId: string,
 
+    /**
+     * Local participant's display name.
+     */
+    _localParticipantDisplayName: string,
+
     /**
      * Whether Picture-in-Picture is enabled.
      */
@@ -116,6 +122,11 @@ type Props = AbstractProps & {
      */
     _toolboxVisible: boolean,
 
+    /**
+     * Indicates if we should auto-knock.
+     */
+    _shouldEnableAutoKnock: boolean,
+
     /**
      * Indicates whether the lobby screen should be visible.
      */
@@ -180,7 +191,6 @@ class Conference extends AbstractConference<Props, State> {
      */
     componentDidMount() {
         BackHandler.addEventListener('hardwareBackPress', this._onHardwareBackPress);
-        setPictureInPictureEnabled(true);
     }
 
     /**
@@ -189,10 +199,18 @@ class Conference extends AbstractConference<Props, State> {
      * @inheritdoc
      */
     componentDidUpdate(prevProps) {
-        const { _showLobby } = this.props;
+        const {
+            _shouldEnableAutoKnock,
+            _showLobby,
+            dispatch
+        } = this.props;
 
         if (!prevProps._showLobby && _showLobby) {
             navigate(screen.lobby.root);
+
+            if (_shouldEnableAutoKnock) {
+                dispatch(startKnocking());
+            }
         }
 
         if (prevProps._showLobby && !_showLobby) {
@@ -213,7 +231,6 @@ class Conference extends AbstractConference<Props, State> {
         BackHandler.removeEventListener('hardwareBackPress', this._onHardwareBackPress);
 
         clearTimeout(this._expandedLabelTimeout.current);
-        setPictureInPictureEnabled(false);
     }
 
     /**
@@ -535,6 +552,7 @@ function _mapStateToProps(state) {
         _largeVideoParticipantId: state['features/large-video'].participantId,
         _pictureInPictureEnabled: getFeatureFlag(state, PIP_ENABLED),
         _reducedUI: reducedUI,
+        _shouldEnableAutoKnock: shouldEnableAutoKnock(state),
         _showLobby: getIsLobbyVisible(state),
         _toolboxVisible: isToolboxVisible(state)
     };
diff --git a/react/features/lobby/components/native/LobbyScreen.js b/react/features/lobby/components/native/LobbyScreen.js
index 5c37371945..1afaf32dd2 100644
--- a/react/features/lobby/components/native/LobbyScreen.js
+++ b/react/features/lobby/components/native/LobbyScreen.js
@@ -58,6 +58,7 @@ class LobbyScreen extends AbstractLobbyScreen<Props> {
 
         return (
             <JitsiScreen
+                safeAreaInsets = { [ 'left' ] }
                 style = { contentWrapperStyles }>
                 <BrandingImageBackground />
                 <View style = { largeVideoContainerStyles }>
diff --git a/react/features/lobby/components/native/styles.js b/react/features/lobby/components/native/styles.js
index ba90f9ddf9..11563b2e08 100644
--- a/react/features/lobby/components/native/styles.js
+++ b/react/features/lobby/components/native/styles.js
@@ -24,7 +24,8 @@ export default {
             marginHorizontal: BaseTheme.spacing[3],
             height: 24,
             width: 24
-        }
+        },
+        underlayColor: 'transparent'
     },
 
     lobbyChatWrapper: {
@@ -75,18 +76,20 @@ export default {
     },
 
     contentContainer: {
-        alignItems: 'center',
+        alignSelf: 'center',
         display: 'flex',
         justifyContent: 'center',
-        minHeight: '50%'
+        minHeight: '50%',
+        paddingHorizontal: BaseTheme.spacing[3],
+        width: 400
     },
 
     contentContainerWide: {
+        alignItems: 'center',
         height: '100%',
         justifyContent: 'center',
         left: '50%',
-        marginHorizontal: BaseTheme.spacing[6],
-        marginVertical: BaseTheme.spacing[3],
+        paddingHorizontal: BaseTheme.spacing[3],
         position: 'absolute',
         width: '50%'
     },
@@ -132,7 +135,8 @@ export default {
         borderRadius: BaseTheme.shape.borderRadius,
         borderWidth: 2,
         height: BaseTheme.spacing[7],
-        marginHorizontal: BaseTheme.spacing[3],
+        marginTop: BaseTheme.spacing[3],
+        marginHorizontal: 12,
         padding: BaseTheme.spacing[2],
         textAlign: 'center'
     },
@@ -182,12 +186,12 @@ export default {
 
     primaryButton: {
         backgroundColor: BaseTheme.palette.action01,
-        marginTop: BaseTheme.spacing[4]
+        marginTop: BaseTheme.spacing[3]
     },
 
     primaryButtonDisabled: {
         backgroundColor: BaseTheme.palette.action03Disabled,
-        marginTop: BaseTheme.spacing[4]
+        marginTop: BaseTheme.spacing[3]
     },
 
     primaryButtonText: {
diff --git a/react/features/mobile/navigation/functions.js b/react/features/mobile/navigation/functions.js
index df002f4475..d7c21ed45a 100644
--- a/react/features/mobile/navigation/functions.js
+++ b/react/features/mobile/navigation/functions.js
@@ -3,12 +3,14 @@ import { useTranslation } from 'react-i18next';
 import { Platform } from 'react-native';
 import { useDispatch } from 'react-redux';
 
+
 import { appNavigate } from '../../app/actions';
 import {
     getFeatureFlag,
     PREJOIN_PAGE_ENABLED
 } from '../../base/flags';
 import { IconClose } from '../../base/icons';
+import { toState } from '../../base/redux';
 import { cancelKnocking } from '../../lobby/actions.native';
 
 import HeaderNavigationButton from './components/HeaderNavigationButton';
@@ -48,7 +50,7 @@ export function screenHeaderCloseButton(goBack: Function) {
  * {@code true}; otherwise, {@code false}.
  */
 export function isPrejoinPageEnabled(stateful: Function | Object) {
-    return getFeatureFlag(stateful, PREJOIN_PAGE_ENABLED, true);
+    return getFeatureFlag(toState(stateful), PREJOIN_PAGE_ENABLED, true);
 }
 
 /**
@@ -78,3 +80,23 @@ export function lobbyScreenHeaderCloseButton() {
             src = { IconClose } />
     );
 }
+
+/**
+ * Returns true if we should auto-knock in case prejoin is enabled for the room.
+ *
+ * @param {Function|Object} stateful - The redux state or {@link getState}
+ * function.
+ * @returns {boolean}
+ */
+export function shouldEnableAutoKnock(stateful: Function | Object) {
+    const state = toState(stateful);
+    const { displayName } = state['features/base/settings'];
+
+    if (isPrejoinPageEnabled(state)) {
+        if (displayName) {
+            return true;
+        }
+    } else {
+        return false;
+    }
+}
diff --git a/react/features/prejoin/components/Prejoin.native.tsx b/react/features/prejoin/components/Prejoin.native.tsx
index ae4f4c2de6..f331d02eaa 100644
--- a/react/features/prejoin/components/Prejoin.native.tsx
+++ b/react/features/prejoin/components/Prejoin.native.tsx
@@ -1,6 +1,13 @@
 import React, { useCallback, useEffect, useLayoutEffect, useState } from 'react';
 import { useTranslation } from 'react-i18next';
-import { Text, View, TouchableOpacity, TextInput, Platform, BackHandler } from 'react-native';
+import {
+    BackHandler,
+    Text,
+    View,
+    TouchableOpacity,
+    TextInput,
+    Platform
+} from 'react-native';
 import { useDispatch, useSelector } from 'react-redux';
 
 import { appNavigate } from '../../app/actions.native';
@@ -12,6 +19,7 @@ import { getLocalParticipant } from '../../base/participants';
 import { getFieldValue } from '../../base/react';
 import { ASPECT_RATIO_NARROW } from '../../base/responsive-ui';
 import { updateSettings } from '../../base/settings';
+import BaseTheme from '../../base/ui/components/BaseTheme.native';
 import { BrandingImageBackground } from '../../dynamic-branding';
 import { LargeVideo } from '../../large-video/components';
 import HeaderNavigationButton from '../../mobile/navigation/components/HeaderNavigationButton';
@@ -19,6 +27,7 @@ import { navigateRoot } from '../../mobile/navigation/rootNavigationContainerRef
 import { screen } from '../../mobile/navigation/routes';
 import AudioMuteButton from '../../toolbox/components/AudioMuteButton';
 import VideoMuteButton from '../../toolbox/components/VideoMuteButton';
+import { isDisplayNameRequired } from '../functions';
 
 import styles from './styles';
 
@@ -34,6 +43,7 @@ const Prejoin: ({ navigation }: Props) => JSX.Element = ({ navigation }: Props)
         (state: any) => state['features/base/responsive-ui']?.aspectRatio
     );
     const localParticipant = useSelector(state => getLocalParticipant(state));
+    const isDisplayNameMandatory = useSelector(state => isDisplayNameRequired(state));
     const participantName = localParticipant?.name;
     const [ displayName, setDisplayName ]
         = useState(participantName || '');
@@ -58,26 +68,10 @@ const Prejoin: ({ navigation }: Props) => JSX.Element = ({ navigation }: Props)
 
     const goBack = useCallback(() => {
         dispatch(appNavigate(undefined));
+
         return true;
     }, [ dispatch ]);
 
-    let contentWrapperStyles;
-    let contentContainerStyles;
-    let largeVideoContainerStyles;
-    let toolboxContainerStyles;
-
-    if (aspectRatio === ASPECT_RATIO_NARROW) {
-        contentWrapperStyles = styles.contentWrapper;
-        contentContainerStyles = styles.contentContainer;
-        largeVideoContainerStyles = styles.largeVideoContainer;
-        toolboxContainerStyles = styles.toolboxContainer;
-    } else {
-        contentWrapperStyles = styles.contentWrapperWide;
-        contentContainerStyles = styles.contentContainerWide;
-        largeVideoContainerStyles = styles.largeVideoContainerWide;
-        toolboxContainerStyles = styles.toolboxContainerWide;
-    }
-
     const headerLeft = useCallback(() => {
         if (Platform.OS === 'ios') {
             return (
@@ -94,10 +88,14 @@ const Prejoin: ({ navigation }: Props) => JSX.Element = ({ navigation }: Props)
         );
     }, []);
 
+    const joinButtonDisabled = !displayName && isDisplayNameMandatory;
+    const joinButtonStyles = joinButtonDisabled
+        ? styles.primaryButtonDisabled : styles.primaryButton;
+
     useEffect(() => {
         BackHandler.addEventListener('hardwareBackPress', goBack);
 
-        return () => BackHandler.removeEventListener('hardwareBackPress', goBack) 
+        return () => BackHandler.removeEventListener('hardwareBackPress', goBack);
 
     }, [ ]);
 
@@ -107,9 +105,26 @@ const Prejoin: ({ navigation }: Props) => JSX.Element = ({ navigation }: Props)
         });
     }, [ navigation ]);
 
+    let contentWrapperStyles;
+    let contentContainerStyles;
+    let largeVideoContainerStyles;
+    let toolboxContainerStyles;
+
+    if (aspectRatio === ASPECT_RATIO_NARROW) {
+        contentWrapperStyles = styles.contentWrapper;
+        contentContainerStyles = styles.contentContainer;
+        largeVideoContainerStyles = styles.largeVideoContainer;
+        toolboxContainerStyles = styles.toolboxContainer;
+    } else {
+        contentWrapperStyles = styles.contentWrapperWide;
+        contentContainerStyles = styles.contentContainerWide;
+        largeVideoContainerStyles = styles.largeVideoContainerWide;
+        toolboxContainerStyles = styles.toolboxContainerWide;
+    }
+
     return (
         <JitsiScreen
-            safeAreaInsets = { [ 'right' ] }
+            safeAreaInsets = { [ 'left' ] }
             style = { contentWrapperStyles }>
             <BrandingImageBackground />
             <View style = { largeVideoContainerStyles }>
@@ -120,13 +135,15 @@ const Prejoin: ({ navigation }: Props) => JSX.Element = ({ navigation }: Props)
                     <TextInput
                         onChangeText = { onChangeDisplayName }
                         placeholder = { t('dialog.enterDisplayName') }
+                        placeholderTextColor = { BaseTheme.palette.text03 }
                         style = { styles.field }
                         value = { displayName } />
                     <TouchableOpacity
+                        disabled = { joinButtonDisabled }
                         onPress = { onJoin }
                         style = { [
                             styles.button,
-                            styles.primaryButton
+                            joinButtonStyles
                         ] }>
                         <Text style = { styles.primaryButtonText }>
                             { t('prejoin.joinMeeting') }
diff --git a/react/features/prejoin/components/styles.js b/react/features/prejoin/components/styles.js
index 496462b0d0..3e7b28ad8a 100644
--- a/react/features/prejoin/components/styles.js
+++ b/react/features/prejoin/components/styles.js
@@ -23,6 +23,10 @@ export default {
         backgroundColor: BaseTheme.palette.action01
     },
 
+    primaryButtonDisabled: {
+        backgroundColor: BaseTheme.palette.action03Disabled,
+        marginTop: BaseTheme.spacing[4]
+    },
 
     primaryButtonText: {
         ...btnText
@@ -49,7 +53,8 @@ export default {
             marginHorizontal: BaseTheme.spacing[3],
             height: 24,
             width: 24
-        }
+        },
+        underlayColor: 'transparent'
     },
 
     contentWrapper: {
@@ -73,18 +78,20 @@ export default {
     },
 
     contentContainer: {
-        alignItems: 'center',
+        alignSelf: 'center',
         display: 'flex',
         justifyContent: 'center',
-        minHeight: '50%'
+        minHeight: '50%',
+        paddingHorizontal: BaseTheme.spacing[3],
+        width: 400
     },
 
     contentContainerWide: {
+        alignItems: 'center',
         height: '100%',
         justifyContent: 'center',
         left: '50%',
-        marginHorizontal: BaseTheme.spacing[6],
-        marginVertical: BaseTheme.spacing[3],
+        paddingHorizontal: BaseTheme.spacing[3],
         position: 'absolute',
         width: '50%'
     },
@@ -115,7 +122,7 @@ export default {
         borderRadius: BaseTheme.shape.borderRadius,
         borderWidth: 2,
         height: BaseTheme.spacing[7],
-        marginTop: BaseTheme.spacing[2],
+        marginTop: BaseTheme.spacing[3],
         textAlign: 'center'
     }
 };
diff --git a/react/features/prejoin/functions.js b/react/features/prejoin/functions.js
index 9b313b0509..001f30d527 100644
--- a/react/features/prejoin/functions.js
+++ b/react/features/prejoin/functions.js
@@ -32,8 +32,8 @@ export function isDeviceStatusVisible(state: Object): boolean {
  * @returns {boolean}
  */
 export function isDisplayNameRequired(state: Object): boolean {
-    return state['features/prejoin'].isDisplayNameRequired
-        || state['features/base/config'].requireDisplayName;
+    return state['features/prejoin']?.isDisplayNameRequired
+        || state['features/base/config']?.requireDisplayName;
 }
 
 /**