diff --git a/native/chat/settings/thread-settings-media-gallery.react.js b/native/chat/settings/thread-settings-media-gallery.react.js
index 44d5d70ab..0cb3f985e 100644
--- a/native/chat/settings/thread-settings-media-gallery.react.js
+++ b/native/chat/settings/thread-settings-media-gallery.react.js
@@ -1,127 +1,194 @@
 // @flow
 
+import { useNavigation, useRoute } from '@react-navigation/native';
 import * as React from 'react';
 import { View, useWindowDimensions } from 'react-native';
+import type { ViewStyleProp } from 'react-native/Libraries/StyleSheet/StyleSheet';
 import { FlatList } from 'react-native-gesture-handler';
 
 import { fetchThreadMedia } from 'lib/actions/thread-actions.js';
-import type { MediaInfo } from 'lib/types/media-types';
+import type { MediaInfo, Media } from 'lib/types/media-types';
 import { useServerCall } from 'lib/utils/action-utils.js';
 
 import GestureTouchableOpacity from '../../components/gesture-touchable-opacity.react.js';
 import Multimedia from '../../media/multimedia.react.js';
+import {
+  ImageModalRouteName,
+  VideoPlaybackModalRouteName,
+} from '../../navigation/route-names.js';
 import { useStyles } from '../../themes/colors.js';
+import type {
+  LayoutCoordinates,
+  VerticalBounds,
+} from '../../types/layout-types.js';
 
 const galleryItemGap = 8;
 const numColumns = 3;
 
 type ThreadSettingsMediaGalleryProps = {
   +threadID: string,
   +limit: number,
+  +verticalBounds: ?VerticalBounds,
 };
 
 function ThreadSettingsMediaGallery(
   props: ThreadSettingsMediaGalleryProps,
 ): React.Node {
   const styles = useStyles(unboundStyles);
   const { width } = useWindowDimensions();
 
   // Explanation of galleryItemWidth:
   // The FlatList has a horizontal padding of 16px on each side,
   // and so the width of the actual FlatList is `width - 32px`.
   // With three columns, there will be two gaps in between the items,
   // so the width of each item (with the gaps) will be
   // (width - 32px - (numColumns-1) * galleryItemGap) / numColumns.
   // E.g. 16px, media, galleryItemGap, media, galleryItemGap, media, 16px
   const galleryItemWidth =
     (width - 32 - (numColumns - 1) * galleryItemGap) / numColumns;
 
-  const { threadID, limit } = props;
+  const { threadID, limit, verticalBounds } = props;
   const [mediaInfos, setMediaInfos] = React.useState([]);
   const callFetchThreadMedia = useServerCall(fetchThreadMedia);
 
   React.useEffect(() => {
     const fetchData = async () => {
       const result = await callFetchThreadMedia({
         threadID,
         limit,
         offset: 0,
       });
       setMediaInfos(result.media);
     };
     fetchData();
   }, [callFetchThreadMedia, threadID, limit]);
 
   const memoizedStyles = React.useMemo(() => {
     return {
       mediaContainer: {
         marginTop: galleryItemGap,
         width: galleryItemWidth,
         ...styles.mediaContainer,
       },
       mediaContainerWithMargin: {
         marginTop: galleryItemGap,
         marginLeft: galleryItemGap,
         width: galleryItemWidth,
         ...styles.mediaContainer,
       },
       media: {
         width: galleryItemWidth,
         ...styles.media,
       },
     };
   }, [galleryItemWidth, styles.media, styles.mediaContainer]);
 
   const renderItem = React.useCallback(
-    ({ item, index }) => {
-      const containerStyle =
-        index % numColumns === 0
-          ? memoizedStyles.mediaContainer
-          : memoizedStyles.mediaContainerWithMargin;
-
-      const mediaInfoItem: MediaInfo = {
-        ...item,
-        index,
-      };
-
-      return (
-        <View key={item.id} style={containerStyle}>
-          <GestureTouchableOpacity style={memoizedStyles.media}>
-            <Multimedia mediaInfo={mediaInfoItem} spinnerColor="black" />
-          </GestureTouchableOpacity>
-        </View>
-      );
-    },
-    [
-      memoizedStyles.media,
-      memoizedStyles.mediaContainer,
-      memoizedStyles.mediaContainerWithMargin,
-    ],
+    ({ item, index }) => (
+      <MediaGalleryItem
+        item={item}
+        index={index}
+        memoizedStyles={memoizedStyles}
+        threadID={threadID}
+        verticalBounds={verticalBounds}
+      />
+    ),
+    [threadID, verticalBounds, memoizedStyles],
   );
 
   return (
     <View style={styles.flatListContainer}>
       <FlatList
         data={mediaInfos}
         numColumns={numColumns}
         renderItem={renderItem}
       />
     </View>
   );
 }
 
+type MediaGalleryItemProps = {
+  +item: Media,
+  +index: number,
+  +memoizedStyles: {
+    +mediaContainer: ViewStyleProp,
+    +mediaContainerWithMargin: ViewStyleProp,
+    +media: ViewStyleProp,
+  },
+  +threadID: string,
+  +verticalBounds: ?VerticalBounds,
+};
+
+function MediaGalleryItem(props: MediaGalleryItemProps): React.Node {
+  const navigation = useNavigation();
+  const route = useRoute();
+  const ref = React.useRef(null);
+  const onLayout = React.useCallback(() => {}, []);
+  const { threadID, verticalBounds, memoizedStyles, item, index } = props;
+
+  const mediaInfo: MediaInfo = React.useMemo(
+    () => ({
+      ...(item: Media),
+      index,
+    }),
+    [item, index],
+  );
+
+  const navigateToMedia = React.useCallback(() => {
+    ref.current?.measure((x, y, width, height, pageX, pageY) => {
+      const initialCoordinates: LayoutCoordinates = {
+        x: pageX,
+        y: pageY,
+        width,
+        height,
+      };
+
+      navigation.navigate<'VideoPlaybackModal' | 'ImageModal'>({
+        name:
+          mediaInfo.type === 'video'
+            ? VideoPlaybackModalRouteName
+            : ImageModalRouteName,
+        key: `multimedia|${threadID}|${mediaInfo.id}`,
+        params: {
+          presentedFrom: route.key,
+          mediaInfo,
+          item,
+          initialCoordinates,
+          verticalBounds,
+        },
+      });
+    });
+  }, [navigation, route, threadID, mediaInfo, item, verticalBounds]);
+
+  const containerStyle =
+    index % numColumns === 0
+      ? memoizedStyles.mediaContainer
+      : memoizedStyles.mediaContainerWithMargin;
+
+  return (
+    <View key={item.id} style={containerStyle} onLayout={onLayout} ref={ref}>
+      <GestureTouchableOpacity
+        onPress={navigateToMedia}
+        style={memoizedStyles.media}
+      >
+        <Multimedia mediaInfo={mediaInfo} spinnerColor="black" />
+      </GestureTouchableOpacity>
+    </View>
+  );
+}
+
 const unboundStyles = {
   flatListContainer: {
     paddingHorizontal: 16,
   },
   mediaContainer: {
     height: 180,
     justifyContent: 'center',
     alignItems: 'center',
   },
   media: {
     height: 180,
   },
 };
 
 export default ThreadSettingsMediaGallery;
diff --git a/native/chat/settings/thread-settings.react.js b/native/chat/settings/thread-settings.react.js
index e45bd5c5b..4864cde6a 100644
--- a/native/chat/settings/thread-settings.react.js
+++ b/native/chat/settings/thread-settings.react.js
@@ -1,1206 +1,1210 @@
 // @flow
 
 import invariant from 'invariant';
 import * as React from 'react';
 import { View, Platform } from 'react-native';
 import { FlatList } from 'react-native-gesture-handler';
 import { createSelector } from 'reselect';
 import tinycolor from 'tinycolor2';
 
 import {
   changeThreadSettingsActionTypes,
   leaveThreadActionTypes,
   removeUsersFromThreadActionTypes,
   changeThreadMemberRolesActionTypes,
 } from 'lib/actions/thread-actions.js';
 import { usePromoteSidebar } from 'lib/hooks/promote-sidebar.react.js';
 import { createLoadingStatusSelector } from 'lib/selectors/loading-selectors.js';
 import {
   threadInfoSelector,
   childThreadInfos,
 } from 'lib/selectors/thread-selectors.js';
 import { getAvailableRelationshipButtons } from 'lib/shared/relationship-utils.js';
 import {
   threadHasPermission,
   viewerIsMember,
   threadInChatList,
   getSingleOtherUser,
   threadIsChannel,
 } from 'lib/shared/thread-utils.js';
 import threadWatcher from 'lib/shared/thread-watcher.js';
 import type { RelationshipButton } from 'lib/types/relationship-types.js';
 import {
   type ThreadInfo,
   type ResolvedThreadInfo,
   type RelativeMemberInfo,
   threadPermissions,
   threadTypes,
 } from 'lib/types/thread-types.js';
 import type { UserInfos } from 'lib/types/user-types.js';
 import {
   useResolvedThreadInfo,
   useResolvedOptionalThreadInfo,
   useResolvedOptionalThreadInfos,
 } from 'lib/utils/entity-helpers.js';
 
 import type { CategoryType } from './thread-settings-category.react.js';
 import {
   ThreadSettingsCategoryHeader,
   ThreadSettingsCategoryActionHeader,
   ThreadSettingsCategoryFooter,
 } from './thread-settings-category.react.js';
 import ThreadSettingsChildThread from './thread-settings-child-thread.react.js';
 import ThreadSettingsColor from './thread-settings-color.react.js';
 import ThreadSettingsDeleteThread from './thread-settings-delete-thread.react.js';
 import ThreadSettingsDescription from './thread-settings-description.react.js';
 import ThreadSettingsEditRelationship from './thread-settings-edit-relationship.react.js';
 import ThreadSettingsHomeNotifs from './thread-settings-home-notifs.react.js';
 import ThreadSettingsLeaveThread from './thread-settings-leave-thread.react.js';
 import {
   ThreadSettingsSeeMore,
   ThreadSettingsAddMember,
   ThreadSettingsAddSubchannel,
 } from './thread-settings-list-action.react.js';
 import ThreadSettingsMediaGallery from './thread-settings-media-gallery.react.js';
 import ThreadSettingsMember from './thread-settings-member.react.js';
 import ThreadSettingsName from './thread-settings-name.react.js';
 import ThreadSettingsParent from './thread-settings-parent.react.js';
 import ThreadSettingsPromoteSidebar from './thread-settings-promote-sidebar.react.js';
 import ThreadSettingsPushNotifs from './thread-settings-push-notifs.react.js';
 import ThreadSettingsVisibility from './thread-settings-visibility.react.js';
 import ThreadAncestors from '../../components/thread-ancestors.react.js';
 import {
   type KeyboardState,
   KeyboardContext,
 } from '../../keyboard/keyboard-state.js';
 import { defaultStackScreenOptions } from '../../navigation/options.js';
 import {
   OverlayContext,
   type OverlayContextType,
 } from '../../navigation/overlay-context.js';
 import {
   AddUsersModalRouteName,
   ComposeSubchannelModalRouteName,
   FullScreenThreadMediaGalleryRouteName,
 } from '../../navigation/route-names.js';
 import type { NavigationRoute } from '../../navigation/route-names.js';
 import type { TabNavigationProp } from '../../navigation/tab-navigator.react.js';
 import { useSelector } from '../../redux/redux-utils.js';
 import type { AppState } from '../../redux/state-types.js';
 import {
   useStyles,
   type IndicatorStyle,
   useIndicatorStyle,
 } from '../../themes/colors.js';
 import type { VerticalBounds } from '../../types/layout-types.js';
 import type { ViewStyle } from '../../types/styles.js';
 import type { ChatNavigationProp } from '../chat.react.js';
 
 const itemPageLength = 5;
 
 export type ThreadSettingsParams = {
   +threadInfo: ThreadInfo,
 };
 
 export type ThreadSettingsNavigate = $PropertyType<
   ChatNavigationProp<'ThreadSettings'>,
   'navigate',
 >;
 
 type ChatSettingsItem =
   | {
       +itemType: 'header',
       +key: string,
       +title: string,
       +categoryType: CategoryType,
     }
   | {
       +itemType: 'actionHeader',
       +key: string,
       +title: string,
       +actionText: string,
       +onPress: () => void,
     }
   | {
       +itemType: 'footer',
       +key: string,
       +categoryType: CategoryType,
     }
   | {
       +itemType: 'name',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
       +nameEditValue: ?string,
       +canChangeSettings: boolean,
     }
   | {
       +itemType: 'color',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
       +colorEditValue: string,
       +canChangeSettings: boolean,
       +navigate: ThreadSettingsNavigate,
       +threadSettingsRouteKey: string,
     }
   | {
       +itemType: 'description',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
       +descriptionEditValue: ?string,
       +descriptionTextHeight: ?number,
       +canChangeSettings: boolean,
     }
   | {
       +itemType: 'parent',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
       +parentThreadInfo: ?ResolvedThreadInfo,
     }
   | {
       +itemType: 'visibility',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
     }
   | {
       +itemType: 'pushNotifs',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
     }
   | {
       +itemType: 'homeNotifs',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
     }
   | {
       +itemType: 'seeMore',
       +key: string,
       +onPress: () => void,
     }
   | {
       +itemType: 'childThread',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
       +firstListItem: boolean,
       +lastListItem: boolean,
     }
   | {
       +itemType: 'addSubchannel',
       +key: string,
     }
   | {
       +itemType: 'member',
       +key: string,
       +memberInfo: RelativeMemberInfo,
       +threadInfo: ResolvedThreadInfo,
       +canEdit: boolean,
       +navigate: ThreadSettingsNavigate,
       +firstListItem: boolean,
       +lastListItem: boolean,
       +verticalBounds: ?VerticalBounds,
       +threadSettingsRouteKey: string,
     }
   | {
       +itemType: 'addMember',
       +key: string,
     }
   | {
       +itemType: 'mediaGallery',
       +key: string,
       +threadInfo: ThreadInfo,
       +limit: number,
+      +verticalBounds: ?VerticalBounds,
     }
   | {
       +itemType: 'promoteSidebar' | 'leaveThread' | 'deleteThread',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
       +navigate: ThreadSettingsNavigate,
       +buttonStyle: ViewStyle,
     }
   | {
       +itemType: 'editRelationship',
       +key: string,
       +threadInfo: ResolvedThreadInfo,
       +navigate: ThreadSettingsNavigate,
       +buttonStyle: ViewStyle,
       +relationshipButton: RelationshipButton,
     };
 
 type BaseProps = {
   +navigation: ChatNavigationProp<'ThreadSettings'>,
   +route: NavigationRoute<'ThreadSettings'>,
 };
 type Props = {
   ...BaseProps,
   // Redux state
   +userInfos: UserInfos,
   +viewerID: ?string,
   +threadInfo: ResolvedThreadInfo,
   +parentThreadInfo: ?ResolvedThreadInfo,
   +childThreadInfos: ?$ReadOnlyArray<ResolvedThreadInfo>,
   +somethingIsSaving: boolean,
   +styles: typeof unboundStyles,
   +indicatorStyle: IndicatorStyle,
   // withOverlayContext
   +overlayContext: ?OverlayContextType,
   // withKeyboardState
   +keyboardState: ?KeyboardState,
   +canPromoteSidebar: boolean,
 };
 type State = {
   +numMembersShowing: number,
   +numSubchannelsShowing: number,
   +numSidebarsShowing: number,
   +nameEditValue: ?string,
   +descriptionEditValue: ?string,
   +descriptionTextHeight: ?number,
   +colorEditValue: string,
   +verticalBounds: ?VerticalBounds,
 };
 type PropsAndState = { ...Props, ...State };
 class ThreadSettings extends React.PureComponent<Props, State> {
   flatListContainer: ?React.ElementRef<typeof View>;
 
   constructor(props: Props) {
     super(props);
     this.state = {
       numMembersShowing: itemPageLength,
       numSubchannelsShowing: itemPageLength,
       numSidebarsShowing: itemPageLength,
       nameEditValue: null,
       descriptionEditValue: null,
       descriptionTextHeight: null,
       colorEditValue: props.threadInfo.color,
       verticalBounds: null,
     };
   }
 
   static scrollDisabled(props: Props) {
     const { overlayContext } = props;
     invariant(overlayContext, 'ThreadSettings should have OverlayContext');
     return overlayContext.scrollBlockingModalStatus !== 'closed';
   }
 
   componentDidUpdate(prevProps: Props) {
     const prevThreadInfo = prevProps.threadInfo;
     const newThreadInfo = this.props.threadInfo;
 
     if (
       !tinycolor.equals(newThreadInfo.color, prevThreadInfo.color) &&
       tinycolor.equals(this.state.colorEditValue, prevThreadInfo.color)
     ) {
       this.setState({ colorEditValue: newThreadInfo.color });
     }
 
     if (defaultStackScreenOptions.gestureEnabled) {
       const scrollIsDisabled = ThreadSettings.scrollDisabled(this.props);
       const scrollWasDisabled = ThreadSettings.scrollDisabled(prevProps);
       if (!scrollWasDisabled && scrollIsDisabled) {
         this.props.navigation.setOptions({ gestureEnabled: false });
       } else if (scrollWasDisabled && !scrollIsDisabled) {
         this.props.navigation.setOptions({ gestureEnabled: true });
       }
     }
   }
 
   threadBasicsListDataSelector = createSelector(
     (propsAndState: PropsAndState) => propsAndState.threadInfo,
     (propsAndState: PropsAndState) => propsAndState.parentThreadInfo,
     (propsAndState: PropsAndState) => propsAndState.nameEditValue,
     (propsAndState: PropsAndState) => propsAndState.colorEditValue,
     (propsAndState: PropsAndState) => propsAndState.descriptionEditValue,
     (propsAndState: PropsAndState) => propsAndState.descriptionTextHeight,
     (propsAndState: PropsAndState) => !propsAndState.somethingIsSaving,
     (propsAndState: PropsAndState) => propsAndState.navigation.navigate,
     (propsAndState: PropsAndState) => propsAndState.route.key,
     (
       threadInfo: ResolvedThreadInfo,
       parentThreadInfo: ?ResolvedThreadInfo,
       nameEditValue: ?string,
       colorEditValue: string,
       descriptionEditValue: ?string,
       descriptionTextHeight: ?number,
       canStartEditing: boolean,
       navigate: ThreadSettingsNavigate,
       routeKey: string,
     ) => {
       const canEditThreadName = threadHasPermission(
         threadInfo,
         threadPermissions.EDIT_THREAD_NAME,
       );
       const canEditThreadDescription = threadHasPermission(
         threadInfo,
         threadPermissions.EDIT_THREAD_DESCRIPTION,
       );
       const canEditThreadColor = threadHasPermission(
         threadInfo,
         threadPermissions.EDIT_THREAD_COLOR,
       );
       const canChangeName = canEditThreadName && canStartEditing;
       const canChangeDescription = canEditThreadDescription && canStartEditing;
       const canChangeColor = canEditThreadColor && canStartEditing;
 
       const listData: ChatSettingsItem[] = [];
       listData.push({
         itemType: 'header',
         key: 'basicsHeader',
         title: 'Basics',
         categoryType: 'full',
       });
       listData.push({
         itemType: 'name',
         key: 'name',
         threadInfo,
         nameEditValue,
         canChangeSettings: canChangeName,
       });
       listData.push({
         itemType: 'color',
         key: 'color',
         threadInfo,
         colorEditValue,
         canChangeSettings: canChangeColor,
         navigate,
         threadSettingsRouteKey: routeKey,
       });
       listData.push({
         itemType: 'footer',
         key: 'basicsFooter',
         categoryType: 'full',
       });
 
       if (
         (descriptionEditValue !== null && descriptionEditValue !== undefined) ||
         threadInfo.description ||
         canEditThreadDescription
       ) {
         listData.push({
           itemType: 'description',
           key: 'description',
           threadInfo,
           descriptionEditValue,
           descriptionTextHeight,
           canChangeSettings: canChangeDescription,
         });
       }
 
       const isMember = viewerIsMember(threadInfo);
       if (isMember) {
         listData.push({
           itemType: 'header',
           key: 'subscriptionHeader',
           title: 'Subscription',
           categoryType: 'full',
         });
         listData.push({
           itemType: 'pushNotifs',
           key: 'pushNotifs',
           threadInfo,
         });
         if (threadInfo.type !== threadTypes.SIDEBAR) {
           listData.push({
             itemType: 'homeNotifs',
             key: 'homeNotifs',
             threadInfo,
           });
         }
         listData.push({
           itemType: 'footer',
           key: 'subscriptionFooter',
           categoryType: 'full',
         });
       }
 
       listData.push({
         itemType: 'header',
         key: 'privacyHeader',
         title: 'Privacy',
         categoryType: 'full',
       });
       listData.push({
         itemType: 'visibility',
         key: 'visibility',
         threadInfo,
       });
       listData.push({
         itemType: 'parent',
         key: 'parent',
         threadInfo,
         parentThreadInfo,
       });
       listData.push({
         itemType: 'footer',
         key: 'privacyFooter',
         categoryType: 'full',
       });
       return listData;
     },
   );
 
   subchannelsListDataSelector = createSelector(
     (propsAndState: PropsAndState) => propsAndState.threadInfo,
     (propsAndState: PropsAndState) => propsAndState.navigation.navigate,
     (propsAndState: PropsAndState) => propsAndState.childThreadInfos,
     (propsAndState: PropsAndState) => propsAndState.numSubchannelsShowing,
     (
       threadInfo: ResolvedThreadInfo,
       navigate: ThreadSettingsNavigate,
       childThreads: ?$ReadOnlyArray<ResolvedThreadInfo>,
       numSubchannelsShowing: number,
     ) => {
       const listData: ChatSettingsItem[] = [];
 
       const subchannels = childThreads?.filter(threadIsChannel) ?? [];
       const canCreateSubchannels = threadHasPermission(
         threadInfo,
         threadPermissions.CREATE_SUBCHANNELS,
       );
       if (subchannels.length === 0 && !canCreateSubchannels) {
         return listData;
       }
 
       listData.push({
         itemType: 'header',
         key: 'subchannelHeader',
         title: 'Subchannels',
         categoryType: 'unpadded',
       });
 
       if (canCreateSubchannels) {
         listData.push({
           itemType: 'addSubchannel',
           key: 'addSubchannel',
         });
       }
 
       const numItems = Math.min(numSubchannelsShowing, subchannels.length);
       for (let i = 0; i < numItems; i++) {
         const subchannelInfo = subchannels[i];
         listData.push({
           itemType: 'childThread',
           key: `childThread${subchannelInfo.id}`,
           threadInfo: subchannelInfo,
           firstListItem: i === 0 && !canCreateSubchannels,
           lastListItem: i === numItems - 1 && numItems === subchannels.length,
         });
       }
 
       if (numItems < subchannels.length) {
         listData.push({
           itemType: 'seeMore',
           key: 'seeMoreSubchannels',
           onPress: this.onPressSeeMoreSubchannels,
         });
       }
 
       listData.push({
         itemType: 'footer',
         key: 'subchannelFooter',
         categoryType: 'unpadded',
       });
 
       return listData;
     },
   );
 
   sidebarsListDataSelector = createSelector(
     (propsAndState: PropsAndState) => propsAndState.navigation.navigate,
     (propsAndState: PropsAndState) => propsAndState.childThreadInfos,
     (propsAndState: PropsAndState) => propsAndState.numSidebarsShowing,
     (
       navigate: ThreadSettingsNavigate,
       childThreads: ?$ReadOnlyArray<ResolvedThreadInfo>,
       numSidebarsShowing: number,
     ) => {
       const listData: ChatSettingsItem[] = [];
 
       const sidebars =
         childThreads?.filter(
           childThreadInfo => childThreadInfo.type === threadTypes.SIDEBAR,
         ) ?? [];
       if (sidebars.length === 0) {
         return listData;
       }
 
       listData.push({
         itemType: 'header',
         key: 'sidebarHeader',
         title: 'Threads',
         categoryType: 'unpadded',
       });
 
       const numItems = Math.min(numSidebarsShowing, sidebars.length);
       for (let i = 0; i < numItems; i++) {
         const sidebarInfo = sidebars[i];
         listData.push({
           itemType: 'childThread',
           key: `childThread${sidebarInfo.id}`,
           threadInfo: sidebarInfo,
           firstListItem: i === 0,
           lastListItem: i === numItems - 1 && numItems === sidebars.length,
         });
       }
 
       if (numItems < sidebars.length) {
         listData.push({
           itemType: 'seeMore',
           key: 'seeMoreSidebars',
           onPress: this.onPressSeeMoreSidebars,
         });
       }
 
       listData.push({
         itemType: 'footer',
         key: 'sidebarFooter',
         categoryType: 'unpadded',
       });
 
       return listData;
     },
   );
 
   threadMembersListDataSelector = createSelector(
     (propsAndState: PropsAndState) => propsAndState.threadInfo,
     (propsAndState: PropsAndState) => !propsAndState.somethingIsSaving,
     (propsAndState: PropsAndState) => propsAndState.navigation.navigate,
     (propsAndState: PropsAndState) => propsAndState.route.key,
     (propsAndState: PropsAndState) => propsAndState.numMembersShowing,
     (propsAndState: PropsAndState) => propsAndState.verticalBounds,
     (
       threadInfo: ResolvedThreadInfo,
       canStartEditing: boolean,
       navigate: ThreadSettingsNavigate,
       routeKey: string,
       numMembersShowing: number,
       verticalBounds: ?VerticalBounds,
     ) => {
       const listData: ChatSettingsItem[] = [];
 
       const canAddMembers = threadHasPermission(
         threadInfo,
         threadPermissions.ADD_MEMBERS,
       );
       if (threadInfo.members.length === 0 && !canAddMembers) {
         return listData;
       }
 
       listData.push({
         itemType: 'header',
         key: 'memberHeader',
         title: 'Members',
         categoryType: 'unpadded',
       });
 
       if (canAddMembers) {
         listData.push({
           itemType: 'addMember',
           key: 'addMember',
         });
       }
 
       const numItems = Math.min(numMembersShowing, threadInfo.members.length);
       for (let i = 0; i < numItems; i++) {
         const memberInfo = threadInfo.members[i];
         listData.push({
           itemType: 'member',
           key: `member${memberInfo.id}`,
           memberInfo,
           threadInfo,
           canEdit: canStartEditing,
           navigate,
           firstListItem: i === 0 && !canAddMembers,
           lastListItem:
             i === numItems - 1 && numItems === threadInfo.members.length,
           verticalBounds,
           threadSettingsRouteKey: routeKey,
         });
       }
 
       if (numItems < threadInfo.members.length) {
         listData.push({
           itemType: 'seeMore',
           key: 'seeMoreMembers',
           onPress: this.onPressSeeMoreMembers,
         });
       }
 
       listData.push({
         itemType: 'footer',
         key: 'memberFooter',
         categoryType: 'unpadded',
       });
 
       return listData;
     },
   );
 
   mediaGalleryListDataSelector = createSelector(
     (propsAndState: PropsAndState) => propsAndState.threadInfo,
-    (threadInfo: ThreadInfo) => {
+    (propsAndState: PropsAndState) => propsAndState.verticalBounds,
+    (threadInfo: ThreadInfo, verticalBounds: ?VerticalBounds) => {
       const listData: ChatSettingsItem[] = [];
       const limit = 6;
 
       listData.push({
         itemType: 'actionHeader',
         key: 'mediaGalleryHeader',
         title: 'Media Gallery',
         actionText: 'See more',
         onPress: this.onPressSeeMoreMediaGallery,
       });
 
       listData.push({
         itemType: 'mediaGallery',
         key: 'mediaGallery',
         threadInfo,
         limit,
+        verticalBounds,
       });
 
       listData.push({
         itemType: 'footer',
         key: 'mediaGalleryFooter',
         categoryType: 'outline',
       });
 
       return listData;
     },
   );
 
   actionsListDataSelector = createSelector(
     (propsAndState: PropsAndState) => propsAndState.threadInfo,
     (propsAndState: PropsAndState) => propsAndState.parentThreadInfo,
     (propsAndState: PropsAndState) => propsAndState.navigation.navigate,
     (propsAndState: PropsAndState) => propsAndState.styles,
     (propsAndState: PropsAndState) => propsAndState.userInfos,
     (propsAndState: PropsAndState) => propsAndState.viewerID,
     (
       threadInfo: ResolvedThreadInfo,
       parentThreadInfo: ?ResolvedThreadInfo,
       navigate: ThreadSettingsNavigate,
       styles: typeof unboundStyles,
       userInfos: UserInfos,
       viewerID: ?string,
     ) => {
       const buttons = [];
 
       if (this.props.canPromoteSidebar) {
         buttons.push({
           itemType: 'promoteSidebar',
           key: 'promoteSidebar',
           threadInfo,
           navigate,
         });
       }
 
       const canLeaveThread = threadHasPermission(
         threadInfo,
         threadPermissions.LEAVE_THREAD,
       );
 
       if (viewerIsMember(threadInfo) && canLeaveThread) {
         buttons.push({
           itemType: 'leaveThread',
           key: 'leaveThread',
           threadInfo,
           navigate,
         });
       }
 
       const canDeleteThread = threadHasPermission(
         threadInfo,
         threadPermissions.DELETE_THREAD,
       );
       if (canDeleteThread) {
         buttons.push({
           itemType: 'deleteThread',
           key: 'deleteThread',
           threadInfo,
           navigate,
         });
       }
 
       const threadIsPersonal = threadInfo.type === threadTypes.PERSONAL;
       if (threadIsPersonal && viewerID) {
         const otherMemberID = getSingleOtherUser(threadInfo, viewerID);
         if (otherMemberID) {
           const otherUserInfo = userInfos[otherMemberID];
           const availableRelationshipActions =
             getAvailableRelationshipButtons(otherUserInfo);
 
           for (const action of availableRelationshipActions) {
             buttons.push({
               itemType: 'editRelationship',
               key: action,
               threadInfo,
               navigate,
               relationshipButton: action,
             });
           }
         }
       }
 
       const listData: ChatSettingsItem[] = [];
       if (buttons.length === 0) {
         return listData;
       }
 
       listData.push({
         itemType: 'header',
         key: 'actionsHeader',
         title: 'Actions',
         categoryType: 'unpadded',
       });
       for (let i = 0; i < buttons.length; i++) {
         // Necessary for Flow...
         if (buttons[i].itemType === 'editRelationship') {
           listData.push({
             ...buttons[i],
             buttonStyle: [
               i === 0 ? null : styles.nonTopButton,
               i === buttons.length - 1 ? styles.lastButton : null,
             ],
           });
         } else {
           listData.push({
             ...buttons[i],
             buttonStyle: [
               i === 0 ? null : styles.nonTopButton,
               i === buttons.length - 1 ? styles.lastButton : null,
             ],
           });
         }
       }
       listData.push({
         itemType: 'footer',
         key: 'actionsFooter',
         categoryType: 'unpadded',
       });
 
       return listData;
     },
   );
 
   listDataSelector = createSelector(
     this.threadBasicsListDataSelector,
     this.subchannelsListDataSelector,
     this.sidebarsListDataSelector,
     this.threadMembersListDataSelector,
     this.mediaGalleryListDataSelector,
     this.actionsListDataSelector,
     (
       threadBasicsListData: ChatSettingsItem[],
       subchannelsListData: ChatSettingsItem[],
       sidebarsListData: ChatSettingsItem[],
       threadMembersListData: ChatSettingsItem[],
       mediaGalleryListData: ChatSettingsItem[],
       actionsListData: ChatSettingsItem[],
     ) => [
       ...threadBasicsListData,
       ...subchannelsListData,
       ...sidebarsListData,
       ...threadMembersListData,
       ...mediaGalleryListData,
       ...actionsListData,
     ],
   );
 
   get listData() {
     return this.listDataSelector({ ...this.props, ...this.state });
   }
 
   render() {
     return (
       <View
         style={this.props.styles.container}
         ref={this.flatListContainerRef}
         onLayout={this.onFlatListContainerLayout}
       >
         <ThreadAncestors threadInfo={this.props.threadInfo} />
         <FlatList
           data={this.listData}
           contentContainerStyle={this.props.styles.flatList}
           renderItem={this.renderItem}
           scrollEnabled={!ThreadSettings.scrollDisabled(this.props)}
           indicatorStyle={this.props.indicatorStyle}
           initialNumToRender={20}
         />
       </View>
     );
   }
 
   flatListContainerRef = (
     flatListContainer: ?React.ElementRef<typeof View>,
   ) => {
     this.flatListContainer = flatListContainer;
   };
 
   onFlatListContainerLayout = () => {
     const { flatListContainer } = this;
     if (!flatListContainer) {
       return;
     }
 
     const { keyboardState } = this.props;
     if (!keyboardState || keyboardState.keyboardShowing) {
       return;
     }
 
     flatListContainer.measure((x, y, width, height, pageX, pageY) => {
       if (
         height === null ||
         height === undefined ||
         pageY === null ||
         pageY === undefined
       ) {
         return;
       }
       this.setState({ verticalBounds: { height, y: pageY } });
     });
   };
 
   renderItem = (row: { item: ChatSettingsItem, ... }) => {
     const item = row.item;
     if (item.itemType === 'header') {
       return (
         <ThreadSettingsCategoryHeader
           type={item.categoryType}
           title={item.title}
         />
       );
     } else if (item.itemType === 'actionHeader') {
       return (
         <ThreadSettingsCategoryActionHeader
           title={item.title}
           actionText={item.actionText}
           onPress={item.onPress}
         />
       );
     } else if (item.itemType === 'footer') {
       return <ThreadSettingsCategoryFooter type={item.categoryType} />;
     } else if (item.itemType === 'name') {
       return (
         <ThreadSettingsName
           threadInfo={item.threadInfo}
           nameEditValue={item.nameEditValue}
           setNameEditValue={this.setNameEditValue}
           canChangeSettings={item.canChangeSettings}
         />
       );
     } else if (item.itemType === 'color') {
       return (
         <ThreadSettingsColor
           threadInfo={item.threadInfo}
           colorEditValue={item.colorEditValue}
           setColorEditValue={this.setColorEditValue}
           canChangeSettings={item.canChangeSettings}
           navigate={item.navigate}
           threadSettingsRouteKey={item.threadSettingsRouteKey}
         />
       );
     } else if (item.itemType === 'description') {
       return (
         <ThreadSettingsDescription
           threadInfo={item.threadInfo}
           descriptionEditValue={item.descriptionEditValue}
           setDescriptionEditValue={this.setDescriptionEditValue}
           descriptionTextHeight={item.descriptionTextHeight}
           setDescriptionTextHeight={this.setDescriptionTextHeight}
           canChangeSettings={item.canChangeSettings}
         />
       );
     } else if (item.itemType === 'parent') {
       return (
         <ThreadSettingsParent
           threadInfo={item.threadInfo}
           parentThreadInfo={item.parentThreadInfo}
         />
       );
     } else if (item.itemType === 'visibility') {
       return <ThreadSettingsVisibility threadInfo={item.threadInfo} />;
     } else if (item.itemType === 'pushNotifs') {
       return <ThreadSettingsPushNotifs threadInfo={item.threadInfo} />;
     } else if (item.itemType === 'homeNotifs') {
       return <ThreadSettingsHomeNotifs threadInfo={item.threadInfo} />;
     } else if (item.itemType === 'seeMore') {
       return <ThreadSettingsSeeMore onPress={item.onPress} />;
     } else if (item.itemType === 'childThread') {
       return (
         <ThreadSettingsChildThread
           threadInfo={item.threadInfo}
           firstListItem={item.firstListItem}
           lastListItem={item.lastListItem}
         />
       );
     } else if (item.itemType === 'addSubchannel') {
       return (
         <ThreadSettingsAddSubchannel onPress={this.onPressComposeSubchannel} />
       );
     } else if (item.itemType === 'member') {
       return (
         <ThreadSettingsMember
           memberInfo={item.memberInfo}
           threadInfo={item.threadInfo}
           canEdit={item.canEdit}
           navigate={item.navigate}
           firstListItem={item.firstListItem}
           lastListItem={item.lastListItem}
           verticalBounds={item.verticalBounds}
           threadSettingsRouteKey={item.threadSettingsRouteKey}
         />
       );
     } else if (item.itemType === 'addMember') {
       return <ThreadSettingsAddMember onPress={this.onPressAddMember} />;
     } else if (item.itemType === 'mediaGallery') {
       return (
         <ThreadSettingsMediaGallery
           threadID={item.threadInfo.id}
           limit={item.limit}
+          verticalBounds={item.verticalBounds}
         />
       );
     } else if (item.itemType === 'leaveThread') {
       return (
         <ThreadSettingsLeaveThread
           threadInfo={item.threadInfo}
           buttonStyle={item.buttonStyle}
         />
       );
     } else if (item.itemType === 'deleteThread') {
       return (
         <ThreadSettingsDeleteThread
           threadInfo={item.threadInfo}
           navigate={item.navigate}
           buttonStyle={item.buttonStyle}
         />
       );
     } else if (item.itemType === 'promoteSidebar') {
       return (
         <ThreadSettingsPromoteSidebar
           threadInfo={item.threadInfo}
           buttonStyle={item.buttonStyle}
         />
       );
     } else if (item.itemType === 'editRelationship') {
       return (
         <ThreadSettingsEditRelationship
           threadInfo={item.threadInfo}
           relationshipButton={item.relationshipButton}
           buttonStyle={item.buttonStyle}
         />
       );
     } else {
       invariant(false, `unexpected ThreadSettings item type ${item.itemType}`);
     }
   };
 
   setNameEditValue = (value: ?string, callback?: () => void) => {
     this.setState({ nameEditValue: value }, callback);
   };
 
   setColorEditValue = (color: string) => {
     this.setState({ colorEditValue: color });
   };
 
   setDescriptionEditValue = (value: ?string, callback?: () => void) => {
     this.setState({ descriptionEditValue: value }, callback);
   };
 
   setDescriptionTextHeight = (height: number) => {
     this.setState({ descriptionTextHeight: height });
   };
 
   onPressComposeSubchannel = () => {
     this.props.navigation.navigate(ComposeSubchannelModalRouteName, {
       presentedFrom: this.props.route.key,
       threadInfo: this.props.threadInfo,
     });
   };
 
   onPressAddMember = () => {
     this.props.navigation.navigate(AddUsersModalRouteName, {
       presentedFrom: this.props.route.key,
       threadInfo: this.props.threadInfo,
     });
   };
 
   onPressSeeMoreMembers = () => {
     this.setState(prevState => ({
       numMembersShowing: prevState.numMembersShowing + itemPageLength,
     }));
   };
 
   onPressSeeMoreSubchannels = () => {
     this.setState(prevState => ({
       numSubchannelsShowing: prevState.numSubchannelsShowing + itemPageLength,
     }));
   };
 
   onPressSeeMoreSidebars = () => {
     this.setState(prevState => ({
       numSidebarsShowing: prevState.numSidebarsShowing + itemPageLength,
     }));
   };
 
   onPressSeeMoreMediaGallery = () => {
     this.props.navigation.navigate(FullScreenThreadMediaGalleryRouteName, {
       threadInfo: this.props.threadInfo,
     });
   };
 }
 
 const unboundStyles = {
   container: {
     backgroundColor: 'panelBackground',
     flex: 1,
   },
   flatList: {
     paddingVertical: 16,
   },
   nonTopButton: {
     borderColor: 'panelForegroundBorder',
     borderTopWidth: 1,
   },
   lastButton: {
     paddingBottom: Platform.OS === 'ios' ? 14 : 12,
   },
 };
 
 const editNameLoadingStatusSelector = createLoadingStatusSelector(
   changeThreadSettingsActionTypes,
   `${changeThreadSettingsActionTypes.started}:name`,
 );
 const editColorLoadingStatusSelector = createLoadingStatusSelector(
   changeThreadSettingsActionTypes,
   `${changeThreadSettingsActionTypes.started}:color`,
 );
 const editDescriptionLoadingStatusSelector = createLoadingStatusSelector(
   changeThreadSettingsActionTypes,
   `${changeThreadSettingsActionTypes.started}:description`,
 );
 const leaveThreadLoadingStatusSelector = createLoadingStatusSelector(
   leaveThreadActionTypes,
 );
 
 const somethingIsSaving = (
   state: AppState,
   threadMembers: $ReadOnlyArray<RelativeMemberInfo>,
 ) => {
   if (
     editNameLoadingStatusSelector(state) === 'loading' ||
     editColorLoadingStatusSelector(state) === 'loading' ||
     editDescriptionLoadingStatusSelector(state) === 'loading' ||
     leaveThreadLoadingStatusSelector(state) === 'loading'
   ) {
     return true;
   }
   for (const threadMember of threadMembers) {
     const removeUserLoadingStatus = createLoadingStatusSelector(
       removeUsersFromThreadActionTypes,
       `${removeUsersFromThreadActionTypes.started}:${threadMember.id}`,
     )(state);
     if (removeUserLoadingStatus === 'loading') {
       return true;
     }
     const changeRoleLoadingStatus = createLoadingStatusSelector(
       changeThreadMemberRolesActionTypes,
       `${changeThreadMemberRolesActionTypes.started}:${threadMember.id}`,
     )(state);
     if (changeRoleLoadingStatus === 'loading') {
       return true;
     }
   }
   return false;
 };
 
 const ConnectedThreadSettings: React.ComponentType<BaseProps> =
   React.memo<BaseProps>(function ConnectedThreadSettings(props: BaseProps) {
     const userInfos = useSelector(state => state.userStore.userInfos);
     const viewerID = useSelector(
       state => state.currentUserInfo && state.currentUserInfo.id,
     );
     const threadID = props.route.params.threadInfo.id;
 
     const reduxThreadInfo: ?ThreadInfo = useSelector(
       state => threadInfoSelector(state)[threadID],
     );
     React.useEffect(() => {
       invariant(
         reduxThreadInfo,
         'ReduxThreadInfo should exist when ThreadSettings is opened',
       );
       // eslint-disable-next-line react-hooks/exhaustive-deps
     }, []);
 
     const { setParams } = props.navigation;
     React.useEffect(() => {
       if (reduxThreadInfo) {
         setParams({ threadInfo: reduxThreadInfo });
       }
     }, [reduxThreadInfo, setParams]);
     const threadInfo: ThreadInfo =
       reduxThreadInfo ?? props.route.params.threadInfo;
     const resolvedThreadInfo = useResolvedThreadInfo(threadInfo);
 
     React.useEffect(() => {
       if (threadInChatList(threadInfo)) {
         return undefined;
       }
       threadWatcher.watchID(threadInfo.id);
       return () => {
         threadWatcher.removeID(threadInfo.id);
       };
     }, [threadInfo]);
 
     const parentThreadID = threadInfo.parentThreadID;
     const parentThreadInfo: ?ThreadInfo = useSelector(state =>
       parentThreadID ? threadInfoSelector(state)[parentThreadID] : null,
     );
     const resolvedParentThreadInfo =
       useResolvedOptionalThreadInfo(parentThreadInfo);
     const threadMembers = threadInfo.members;
     const boundChildThreadInfos = useSelector(
       state => childThreadInfos(state)[threadID],
     );
     const resolvedChildThreadInfos = useResolvedOptionalThreadInfos(
       boundChildThreadInfos,
     );
     const boundSomethingIsSaving = useSelector(state =>
       somethingIsSaving(state, threadMembers),
     );
 
     const { navigation } = props;
     React.useEffect(() => {
       const tabNavigation: ?TabNavigationProp<'Chat'> = navigation.getParent();
       invariant(tabNavigation, 'ChatNavigator should be within TabNavigator');
 
       const onTabPress = () => {
         if (navigation.isFocused() && !boundSomethingIsSaving) {
           navigation.popToTop();
         }
       };
 
       tabNavigation.addListener('tabPress', onTabPress);
       return () => tabNavigation.removeListener('tabPress', onTabPress);
     }, [navigation, boundSomethingIsSaving]);
 
     const styles = useStyles(unboundStyles);
     const indicatorStyle = useIndicatorStyle();
     const overlayContext = React.useContext(OverlayContext);
     const keyboardState = React.useContext(KeyboardContext);
     const { canPromoteSidebar } = usePromoteSidebar(threadInfo);
     return (
       <ThreadSettings
         {...props}
         userInfos={userInfos}
         viewerID={viewerID}
         threadInfo={resolvedThreadInfo}
         parentThreadInfo={resolvedParentThreadInfo}
         childThreadInfos={resolvedChildThreadInfos}
         somethingIsSaving={boundSomethingIsSaving}
         styles={styles}
         indicatorStyle={indicatorStyle}
         overlayContext={overlayContext}
         keyboardState={keyboardState}
         canPromoteSidebar={canPromoteSidebar}
       />
     );
   });
 
 export default ConnectedThreadSettings;