diff --git a/stylesheets/components/Preferences.scss b/stylesheets/components/Preferences.scss
index ce769146c8..ed2f7396c3 100644
--- a/stylesheets/components/Preferences.scss
+++ b/stylesheets/components/Preferences.scss
@@ -33,49 +33,25 @@ $secondary-text-color: light-dark(
     background: variables.$color-gray-95;
   }
 
-  &__header {
-    display: flex;
-    flex-direction: row;
-  }
-
-  &__header__toggle {
-    flex-grow: 0;
-    min-width: 80px;
-    width: 80px;
-    margin-inline-end: -24px;
-  }
-
-  &__header__text {
-    flex-grow: 1;
-    margin-inline-start: 24px;
-    @include mixins.font-title-medium;
-    line-height: 20px;
-    margin-top: 12px;
-    margin-bottom: 20px;
-  }
-
   &__dialog-container {
     margin-bottom: 8px;
   }
 
   &__page-selector {
-    padding-top: var(--title-bar-drag-area-height);
-    width: 279px;
-    flex-grow: 0;
-    flex-shrink: 0;
+    padding-top: 2px;
+    max-height: 100%;
+
     @include mixins.light-theme {
       background: variables.$color-gray-04;
-      border-inline-end: 0.5px solid variables.$color-black-alpha-16;
     }
     @include mixins.dark-theme {
       background: variables.$color-gray-80;
-      border-inline-end: 0.5px solid variables.$color-white-alpha-16;
     }
   }
 
   &__scroll-area {
     overflow-y: scroll;
-    max-height: calc(100% - 52px);
+    max-height: 100%;
 
     &::-webkit-scrollbar-thumb {
       @include mixins.light-theme {
diff --git a/ts/components/Preferences.stories.tsx b/ts/components/Preferences.stories.tsx
index 0e8f21f063..70879670b2 100644
--- a/ts/components/Preferences.stories.tsx
+++ b/ts/components/Preferences.stories.tsx
@@ -243,6 +243,7 @@ export default {
     },
     page: Page.Profile,
     preferredSystemLocales: ['en'],
+    preferredWidthFromStorage: 300,
     resolvedLocale: 'en',
     selectedCamera:
       'dfbe6effe70b0611ba0fdc2a9ea3f39f6cb110e6687948f7e5f016c111b7329c',
@@ -328,6 +329,7 @@ export default {
     ),
     resetAllChatColors: action('resetAllChatColors'),
     resetDefaultChatColor: action('resetDefaultChatColor'),
+    savePreferredLeftPaneWidth: action('savePreferredLeftPaneWidth'),
     setGlobalDefaultConversationColor: action(
       'setGlobalDefaultConversationColor'
     ),
diff --git a/ts/components/Preferences.tsx b/ts/components/Preferences.tsx
index 9747078478..afad6e8f48 100644
--- a/ts/components/Preferences.tsx
+++ b/ts/components/Preferences.tsx
@@ -49,8 +49,8 @@ import {
 import { PreferencesBackups } from './PreferencesBackups';
 import { PreferencesInternal } from './PreferencesInternal';
 import { FunEmojiLocalizationProvider } from './fun/FunEmojiLocalizationProvider';
-import { NavTabsToggle } from './NavTabs';
 import { Avatar, AvatarSize } from './Avatar';
+import { NavSidebar } from './NavSidebar';
 
 import type { MediaDeviceSettings } from '../types/Calling';
 import type { ValidationResultType as BackupValidationResultType } from '../services/backups';
@@ -151,6 +151,7 @@ export type PropsDataType = {
   me: ConversationType;
   badge: BadgeType | undefined;
   theme: ThemeType;
+  preferredWidthFromStorage: number;
 
   // Limited support features
   isAutoDownloadUpdatesSupported: boolean;
@@ -200,6 +201,7 @@ type PropsFunctionType = {
   removeCustomColorOnConversations: (colorId: string) => unknown;
   resetAllChatColors: () => unknown;
   resetDefaultChatColor: () => unknown;
+  savePreferredLeftPaneWidth: (_: number) => void;
   setGlobalDefaultConversationColor: (
     color: ConversationColorType,
     customColorData?: {
@@ -411,6 +413,7 @@ export function Preferences({
   page,
   phoneNumber = '',
   preferredSystemLocales,
+  preferredWidthFromStorage,
   refreshCloudBackupStatus,
   refreshBackupSubscriptionStatus,
   removeCustomColor,
@@ -421,6 +424,7 @@ export function Preferences({
   resetAllChatColors,
   resetDefaultChatColor,
   resolvedLocale,
+  savePreferredLeftPaneWidth,
   selectedCamera,
   selectedMicrophone,
   selectedSpeaker,
@@ -651,6 +655,9 @@ export function Preferences({
           <Control
             left={i18n('icu:Preferences--phone-number')}
             right={phoneNumber}
+            rightStyle={{
+              maxWidth: '33%',
+            }}
           />
           <Control
             left={
@@ -662,6 +669,9 @@ export function Preferences({
               </>
             }
             right={deviceName}
+            rightStyle={{
+              maxWidth: '33%',
+            }}
           />
         </SettingsRow>
         <SettingsRow title={i18n('icu:Preferences--system')}>
@@ -1908,187 +1918,181 @@ export function Preferences({
     <FunEmojiLocalizationProvider i18n={i18n}>
       <div className="module-title-bar-drag-area" />
       <div className="Preferences">
-        <div className="Preferences__page-selector">
-          <div className="Preferences__header">
-            {navTabsCollapsed ? (
-              <div className="Preferences__header__toggle">
-                <NavTabsToggle
-                  i18n={i18n}
-                  onToggleNavTabsCollapse={onToggleNavTabsCollapse}
-                  navTabsCollapsed
-                  hasFailedStorySends={hasFailedStorySends}
-                  otherTabsUnreadStats={otherTabsUnreadStats}
-                  hasPendingUpdate={false}
-                />
-              </div>
-            ) : undefined}
-            <h1 className="Preferences__header__text">
-              {i18n('icu:Preferences--header')}
-            </h1>
-          </div>
-          {maybeUpdateDialog ? (
-            <div className="Preferences__dialog-container">
-              <div className="module-left-pane__dialogs">
-                {maybeUpdateDialog}
-              </div>
-            </div>
-          ) : null}
-          <div className="Preferences__scroll-area">
-            <button
-              type="button"
-              className={classNames({
-                'Preferences__profile-chip': true,
-                'Preferences__profile-chip--selected': page === Page.Profile,
-              })}
-              onClick={() => setPage(Page.Profile)}
-            >
-              <div className="Preferences__profile-chip__avatar">
-                <Avatar
-                  avatarUrl={me.avatarUrl}
-                  badge={badge}
-                  className="module-main-header__avatar"
-                  color={me.color}
-                  conversationType="direct"
-                  i18n={i18n}
-                  phoneNumber={me.phoneNumber}
-                  profileName={me.profileName}
-                  theme={theme}
-                  title={me.title}
-                  // `sharedGroupNames` makes no sense for yourself, but
-                  // `<Avatar>` needs it to determine blurring.
-                  sharedGroupNames={[]}
-                  size={AvatarSize.FORTY_EIGHT}
-                />
-              </div>
-              <div className="Preferences__profile-chip__text-container">
-                <div className="Preferences__profile-chip__name">
-                  {me.title}
+        <NavSidebar
+          title={i18n('icu:Preferences--header')}
+          i18n={i18n}
+          otherTabsUnreadStats={otherTabsUnreadStats}
+          hasFailedStorySends={hasFailedStorySends}
+          hasPendingUpdate={false}
+          navTabsCollapsed={navTabsCollapsed}
+          onToggleNavTabsCollapse={onToggleNavTabsCollapse}
+          preferredLeftPaneWidth={preferredWidthFromStorage}
+          requiresFullWidth
+          savePreferredLeftPaneWidth={savePreferredLeftPaneWidth}
+          renderToastManager={renderToastManager}
+        >
+          <div className="Preferences__page-selector">
+            {maybeUpdateDialog ? (
+              <div className="Preferences__dialog-container">
+                <div className="module-left-pane__dialogs">
+                  {maybeUpdateDialog}
                 </div>
-                <div className="Preferences__profile-chip__number">
-                  {me.phoneNumber}
+              </div>
+            ) : null}
+            <div className="Preferences__scroll-area">
+              <button
+                type="button"
+                className={classNames({
+                  'Preferences__profile-chip': true,
+                  'Preferences__profile-chip--selected': page === Page.Profile,
+                })}
+                onClick={() => setPage(Page.Profile)}
+              >
+                <div className="Preferences__profile-chip__avatar">
+                  <Avatar
+                    avatarUrl={me.avatarUrl}
+                    badge={badge}
+                    className="module-main-header__avatar"
+                    color={me.color}
+                    conversationType="direct"
+                    i18n={i18n}
+                    phoneNumber={me.phoneNumber}
+                    profileName={me.profileName}
+                    theme={theme}
+                    title={me.title}
+                    // `sharedGroupNames` makes no sense for yourself, but
+                    // `<Avatar>` needs it to determine blurring.
+                    sharedGroupNames={[]}
+                    size={AvatarSize.FORTY_EIGHT}
+                  />
                 </div>
-                {me.username && (
-                  <div className="Preferences__profile-chip__username">
-                    {me.username}
+                <div className="Preferences__profile-chip__text-container">
+                  <div className="Preferences__profile-chip__name">
+                    {me.title}
                   </div>
-                )}
-              </div>
-              <div className="Preferences__profile-chip__qr-icon-container">
-                <div className="Preferences__profile-chip__qr-icon" />
-              </div>
-            </button>
-            <button
-              type="button"
-              className={classNames({
-                Preferences__button: true,
-                'Preferences__button--general': true,
-                'Preferences__button--selected': page === Page.General,
-              })}
-              onClick={() => setPage(Page.General)}
-            >
-              {i18n('icu:Preferences__button--general')}
-            </button>
-            <button
-              type="button"
-              className={classNames({
-                Preferences__button: true,
-                'Preferences__button--appearance': true,
-                'Preferences__button--selected':
-                  page === Page.Appearance || page === Page.ChatColor,
-              })}
-              onClick={() => setPage(Page.Appearance)}
-            >
-              {i18n('icu:Preferences__button--appearance')}
-            </button>
-            <button
-              type="button"
-              className={classNames({
-                Preferences__button: true,
-                'Preferences__button--chats': true,
-                'Preferences__button--selected': page === Page.Chats,
-              })}
-              onClick={() => setPage(Page.Chats)}
-            >
-              {i18n('icu:Preferences__button--chats')}
-            </button>
-            <button
-              type="button"
-              className={classNames({
-                Preferences__button: true,
-                'Preferences__button--calls': true,
-                'Preferences__button--selected': page === Page.Calls,
-              })}
-              onClick={() => setPage(Page.Calls)}
-            >
-              {i18n('icu:Preferences__button--calls')}
-            </button>
-            <button
-              type="button"
-              className={classNames({
-                Preferences__button: true,
-                'Preferences__button--notifications': true,
-                'Preferences__button--selected': page === Page.Notifications,
-              })}
-              onClick={() => setPage(Page.Notifications)}
-            >
-              {i18n('icu:Preferences__button--notifications')}
-            </button>
-            <button
-              type="button"
-              className={classNames({
-                Preferences__button: true,
-                'Preferences__button--privacy': true,
-                'Preferences__button--selected':
-                  page === Page.Privacy || page === Page.PNP,
-              })}
-              onClick={() => setPage(Page.Privacy)}
-            >
-              {i18n('icu:Preferences__button--privacy')}
-            </button>
-            <button
-              type="button"
-              className={classNames({
-                Preferences__button: true,
-                'Preferences__button--data-usage': true,
-                'Preferences__button--selected': page === Page.DataUsage,
-              })}
-              onClick={() => setPage(Page.DataUsage)}
-            >
-              {i18n('icu:Preferences__button--data-usage')}
-            </button>
-            {shouldShowBackupsPage ? (
+                  <div className="Preferences__profile-chip__number">
+                    {me.phoneNumber}
+                  </div>
+                  {me.username && (
+                    <div className="Preferences__profile-chip__username">
+                      {me.username}
+                    </div>
+                  )}
+                </div>
+                <div className="Preferences__profile-chip__qr-icon-container">
+                  <div className="Preferences__profile-chip__qr-icon" />
+                </div>
+              </button>
               <button
                 type="button"
                 className={classNames({
                   Preferences__button: true,
-                  'Preferences__button--backups': true,
-                  'Preferences__button--selected': page === Page.Backups,
+                  'Preferences__button--general': true,
+                  'Preferences__button--selected': page === Page.General,
                 })}
-                onClick={() => setPage(Page.Backups)}
+                onClick={() => setPage(Page.General)}
               >
-                {i18n('icu:Preferences__button--backups')}
+                {i18n('icu:Preferences__button--general')}
               </button>
-            ) : null}
-            {isInternalUser ? (
               <button
                 type="button"
                 className={classNames({
                   Preferences__button: true,
-                  'Preferences__button--internal': true,
-                  'Preferences__button--selected': page === Page.Internal,
+                  'Preferences__button--appearance': true,
+                  'Preferences__button--selected':
+                    page === Page.Appearance || page === Page.ChatColor,
                 })}
-                onClick={() => setPage(Page.Internal)}
+                onClick={() => setPage(Page.Appearance)}
               >
-                {i18n('icu:Preferences__button--internal')}
+                {i18n('icu:Preferences__button--appearance')}
               </button>
-            ) : null}
+              <button
+                type="button"
+                className={classNames({
+                  Preferences__button: true,
+                  'Preferences__button--chats': true,
+                  'Preferences__button--selected': page === Page.Chats,
+                })}
+                onClick={() => setPage(Page.Chats)}
+              >
+                {i18n('icu:Preferences__button--chats')}
+              </button>
+              <button
+                type="button"
+                className={classNames({
+                  Preferences__button: true,
+                  'Preferences__button--calls': true,
+                  'Preferences__button--selected': page === Page.Calls,
+                })}
+                onClick={() => setPage(Page.Calls)}
+              >
+                {i18n('icu:Preferences__button--calls')}
+              </button>
+              <button
+                type="button"
+                className={classNames({
+                  Preferences__button: true,
+                  'Preferences__button--notifications': true,
+                  'Preferences__button--selected': page === Page.Notifications,
+                })}
+                onClick={() => setPage(Page.Notifications)}
+              >
+                {i18n('icu:Preferences__button--notifications')}
+              </button>
+              <button
+                type="button"
+                className={classNames({
+                  Preferences__button: true,
+                  'Preferences__button--privacy': true,
+                  'Preferences__button--selected':
+                    page === Page.Privacy || page === Page.PNP,
+                })}
+                onClick={() => setPage(Page.Privacy)}
+              >
+                {i18n('icu:Preferences__button--privacy')}
+              </button>
+              <button
+                type="button"
+                className={classNames({
+                  Preferences__button: true,
+                  'Preferences__button--data-usage': true,
+                  'Preferences__button--selected': page === Page.DataUsage,
+                })}
+                onClick={() => setPage(Page.DataUsage)}
+              >
+                {i18n('icu:Preferences__button--data-usage')}
+              </button>
+              {shouldShowBackupsPage ? (
+                <button
+                  type="button"
+                  className={classNames({
+                    Preferences__button: true,
+                    'Preferences__button--backups': true,
+                    'Preferences__button--selected': page === Page.Backups,
+                  })}
+                  onClick={() => setPage(Page.Backups)}
+                >
+                  {i18n('icu:Preferences__button--backups')}
+                </button>
+              ) : null}
+              {isInternalUser ? (
+                <button
+                  type="button"
+                  className={classNames({
+                    Preferences__button: true,
+                    'Preferences__button--internal': true,
+                    'Preferences__button--selected': page === Page.Internal,
+                  })}
+                  onClick={() => setPage(Page.Internal)}
+                >
+                  {i18n('icu:Preferences__button--internal')}
+                </button>
+              ) : null}
+            </div>
           </div>
-        </div>
+        </NavSidebar>
         {content}
       </div>
-      {renderToastManager({
-        containerWidthBreakpoint: WidthBreakpoint.Wide,
-      })}
     </FunEmojiLocalizationProvider>
   );
 }
diff --git a/ts/components/PreferencesUtil.tsx b/ts/components/PreferencesUtil.tsx
index a885dc8d28..2d95b36d94 100644
--- a/ts/components/PreferencesUtil.tsx
+++ b/ts/components/PreferencesUtil.tsx
@@ -32,12 +32,14 @@ export function SettingsControl({
   left,
   onClick,
   right,
+  rightStyle,
 }: {
   /** A className or `true` to leave room for icon */
   icon?: string | true;
   left: ReactNode;
   onClick?: () => unknown;
   right: ReactNode;
+  rightStyle?: React.CSSProperties;
 }): JSX.Element {
   const content = (
     <>
@@ -50,7 +52,9 @@ export function SettingsControl({
         />
       )}
       <div className="Preferences__control--key">{left}</div>
-      <div className="Preferences__control--value">{right}</div>
+      <div className="Preferences__control--value" style={rightStyle}>
+        {right}
+      </div>
     </>
   );
 
diff --git a/ts/state/smart/Preferences.tsx b/ts/state/smart/Preferences.tsx
index 3f877698b2..5d582ad944 100644
--- a/ts/state/smart/Preferences.tsx
+++ b/ts/state/smart/Preferences.tsx
@@ -17,6 +17,7 @@ import {
   getCustomColors,
   getItems,
   getNavTabsCollapsed,
+  getPreferredLeftPaneWidth,
 } from '../selectors/items';
 import { DEFAULT_AUTO_DOWNLOAD_ATTACHMENT } from '../../textsecure/Storage';
 import { DEFAULT_CONVERSATION_COLOR } from '../../types/Colors';
@@ -127,6 +128,7 @@ export function SmartPreferences(): JSX.Element | null {
     putItem,
     removeCustomColor,
     resetDefaultChatColor,
+    savePreferredLeftPaneWidth,
     setEmojiSkinToneDefault: onEmojiSkinToneDefaultChange,
     setGlobalDefaultConversationColor,
     toggleNavTabsCollapse,
@@ -144,17 +146,19 @@ export function SmartPreferences(): JSX.Element | null {
   const getConversationsWithCustomColor = useSelector(
     getConversationsWithCustomColorSelector
   );
-  const items = useSelector(getItems);
   const i18n = useSelector(getIntl);
+  const items = useSelector(getItems);
+  const hasFailedStorySends = useSelector(getHasAnyFailedStorySends);
   const hasPendingUpdate = useSelector(getHasPendingUpdate);
   const isUpdateDownloaded = useSelector(getIsUpdateDownloaded);
-  const navTabsCollapsed = useSelector(getNavTabsCollapsed);
-  const hasFailedStorySends = useSelector(getHasAnyFailedStorySends);
-  const otherTabsUnreadStats = useSelector(getOtherTabsUnreadStats);
   const me = useSelector(getMe);
-  const badge = useSelector(getPreferredBadgeSelector)(me.badges);
+  const navTabsCollapsed = useSelector(getNavTabsCollapsed);
+  const otherTabsUnreadStats = useSelector(getOtherTabsUnreadStats);
+  const preferredWidthFromStorage = useSelector(getPreferredLeftPaneWidth);
   const theme = useSelector(getTheme);
 
+  const badge = useSelector(getPreferredBadgeSelector)(me.badges);
+
   // The weird ones
 
   const makeSyncRequest = async () => {
@@ -763,6 +767,7 @@ export function SmartPreferences(): JSX.Element | null {
         otherTabsUnreadStats={otherTabsUnreadStats}
         page={page}
         preferredSystemLocales={preferredSystemLocales}
+        preferredWidthFromStorage={preferredWidthFromStorage}
         refreshCloudBackupStatus={refreshCloudBackupStatus}
         refreshBackupSubscriptionStatus={refreshBackupSubscriptionStatus}
         removeCustomColorOnConversations={removeCustomColorOnConversations}
@@ -779,6 +784,7 @@ export function SmartPreferences(): JSX.Element | null {
         sentMediaQualitySetting={sentMediaQualitySetting}
         setGlobalDefaultConversationColor={setGlobalDefaultConversationColor}
         setPage={setPage}
+        savePreferredLeftPaneWidth={savePreferredLeftPaneWidth}
         showToast={showToast}
         theme={theme}
         themeSetting={themeSetting}