diff --git a/app/src/main/res/values-es-rES/strings.xml b/app/src/main/res/values-es-rES/strings.xml
index 8590bbda2..81a74d00b 100644
--- a/app/src/main/res/values-es-rES/strings.xml
+++ b/app/src/main/res/values-es-rES/strings.xml
@@ -596,6 +596,8 @@
     <!-- Title for Accessiblity Text Size Scaling Preference -->
     <string name="preference_accessibility_font_size_title">Tamaño de la fuente</string>
 
+    <!-- Title for the Delete browsing data preference -->
+    <string name="preferences_delete_browsing_data">Eliminar datos del navegador</string>
     <!-- Title for the tabs item in Delete browsing data -->
     <string name="preferences_delete_browsing_data_tabs_title">Abrir pestañas</string>
     <!-- Subtitle for the tabs item in Delete browsing data, parameter will be replaced with the number of open tabs -->
@@ -627,4 +629,39 @@
     <!-- text for the Firefox Accounts section header -->
     <string name="onboarding_fxa_section_header">¿Ya tienes una cuenta?</string>
 
-    </resources>
+    <!-- text for the Firefox Preview feature section header
+    The first parameter is the name of the app (e.g. Firefox Preview) -->
+    <string name="onboarding_feature_section_header">Conoce a %s</string>
+    <!-- text for the firefox account onboarding card header
+    The first parameter is the name of the app (e.g. Firefox Preview) -->
+    <string name="onboarding_firefox_account_header">Sácale el mejor provecho a %s.</string>
+    <!-- text for the button to sign into your Firefox account. The word "Firefox" should not be translated -->
+    <string name="onboarding_firefox_account_sign_in">Iniciar sesión en Firefox</string>
+    <!-- text for the button to stay signed into your Firefox account. -->
+    <string name="onboarding_firefox_account_stay_signed_in">Mantener el inicio de sesión</string>
+    <!-- text for the button to sign out of your Firefox account. -->
+    <string name="onboarding_firefox_account_sign_out">Cerrar sesión</string>
+    <!-- text for the tracking protection onboarding card header -->
+    <string name="onboarding_tracking_protection_header">Protégete</string>
+    <!-- text for the privacy notice onboarding card header -->
+    <string name="onboarding_privacy_notice_header">Tu privacidad</string>
+    <!-- text for the privacy notice onboarding card description
+    The first parameter is the name of the app (e.g. Firefox Preview) -->
+    <string name="onboarding_privacy_notice_description">Hemos diseñado %s para darte control sobre lo que compartes
+        en línea y lo que compartes con nosotros.</string>
+    <!-- Text for the button to read the privacy notice -->
+    <string name="onboarding_privacy_notice_read_button">Lee nuestro aviso de privacidad</string>
+
+    <!-- text for the button to finish onboarding -->
+    <string name="onboarding_finish">Comienza a navegar</string>
+
+    <!-- Onboarding theme -->
+    <!-- Automatic theme setting (will follow device setting) -->
+    <string name="onboarding_theme_automatic_title">Automático</string>
+    <!-- Summary of automatic theme setting (will follow device setting) -->
+    <string name="onboarding_theme_automatic_summary">Se adapta a la configuración de tu dispositivo</string>
+    <!-- Theme setting for dark mode -->
+    <string name="onboarding_theme_dark_title">Tema oscuro</string>
+    <!-- Theme setting for light mode -->
+    <string name="onboarding_theme_light_title">Tema claro</string>
+</resources>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index d94e053cf..0cf31c84d 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -630,6 +630,9 @@
     <!-- Text for the allow button for the data deletion dialog -->
     <string name="preferences_delete_browsing_data_prompt_allow">Autoriser</string>
 
+    <!-- Text for the snackbar confirmation that the data was deleted -->
+    <string name="preferences_delete_browsing_data_snackbar">Données de navigation supprimées</string>
+
     <!-- Onboarding -->
     <!-- Text for onboarding welcome message
     The first parameter is the name of the app (e.g. Firefox Preview) -->
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index c3378573b..803e98b78 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -608,7 +608,7 @@
     <!-- Subtitle for the tabs item in Delete browsing data, parameter will be replaced with the number of open tabs -->
     <string name="preferences_delete_browsing_data_tabs_subtitle">%d вкладки(ок)</string>
     <!-- Title for the data and history items in Delete browsing data -->
-    <string name="preferences_delete_browsing_data_browsing_data_title">История веб-серфинга и данные сайтов</string>
+    <string name="preferences_delete_browsing_data_browsing_data_title">История веб-сёрфинга и данные сайтов</string>
     <!-- Subtitle for the data and history items in delete browsing data, parameter will be replaced with the
         number of history items the user has -->
     <string name="preferences_delete_browsing_data_browsing_data_subtitle">%d адресов</string>
@@ -627,6 +627,9 @@
     <!-- Text for the allow button for the data deletion dialog -->
     <string name="preferences_delete_browsing_data_prompt_allow">Разрешить</string>
 
+    <!-- Text for the snackbar confirmation that the data was deleted -->
+    <string name="preferences_delete_browsing_data_snackbar">Данные веб-сёрфинга удалены</string>
+
     <!-- Onboarding -->
     <!-- Text for onboarding welcome message
     The first parameter is the name of the app (e.g. Firefox Preview) -->
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index c46b88007..76b895587 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -71,17 +71,17 @@
 
     <!-- Search Fragment -->
     <!-- Button in the search view that lets a user search by scanning a QR code -->
-    <string name="search_scan_button">扫描</string>
+    <string name="search_scan_button">扫码</string>
     <!-- Button in the search view that lets a user search by using a shortcut -->
-    <string name="search_shortcuts_button">快捷方式</string>
+    <string name="search_shortcuts_button">快捷操作</string>
     <!-- Button in the search view when shortcuts are displayed that takes a user to the search engine settings -->
     <string name="search_shortcuts_engine_settings">搜索引擎设置</string>
 
     <!-- Header displayed when selecting a shortcut search engine -->
-    <string name="search_shortcuts_search_with">搜索引擎：</string>
+    <string name="search_shortcuts_search_with">选择下列引擎搜索</string>
 
     <!-- Button in the search view that lets a user navigate to the site in their clipboard -->
-    <string name="awesomebar_clipboard_title">填充剪贴板中的链接</string>
+    <string name="awesomebar_clipboard_title">打开剪贴板中的链接</string>
 
     <!-- Preferences -->
     <!-- Title for the settings page-->
@@ -214,7 +214,7 @@
     <!-- Header of the Turn on Sync preference view -->
     <string name="preferences_sync">开启同步</string>
     <!-- Preference for pairing -->
-    <string name="preferences_sync_pair">扫描桌面 Firefox 中的配对码</string>
+    <string name="preferences_sync_pair">扫描桌面 Firefox 中的配对二维码</string>
     <!-- Preference for account login -->
     <string name="preferences_sync_sign_in">登录</string>
     <!-- Preference for account creation -->
@@ -240,7 +240,7 @@
     <string name="preference_dark_theme">深邃</string>
 
     <!-- Preference for using using dark or light theme automatically set by battery -->
-    <string name="preference_auto_battery_theme">由省电模式设置</string>
+    <string name="preference_auto_battery_theme">依系统省电模式设置</string>
     <!-- Preference for using following device theme -->
     <string name="preference_follow_device_theme">跟随设备主题</string>
 
@@ -250,7 +250,7 @@
     <!-- Button in the browser chrome to download the current page -->
     <string name="quick_action_download">下载</string>
     <!-- Button in the browser chrome in the browser to bookmark the current page -->
-    <string name="quick_action_bookmark">书签</string>
+    <string name="quick_action_bookmark">添加书签</string>
 
     <!-- Button in the browser chrome in the browser to put the the current page in reader mode -->
     <string name="quick_action_read">阅读模式</string>
@@ -264,7 +264,7 @@
 
     <!-- Library -->
     <!-- Option in Library to open Sessions page -->
-    <string name="library_sessions">浏览状态</string>
+    <string name="library_sessions">浏览阶段</string>
     <!-- Option in Library to open Screenshots page -->
     <string name="library_screenshots">屏幕截图</string>
     <!-- Option in Library to open Downloads page -->
@@ -298,7 +298,7 @@
     <!-- Title for the list of tabs -->
     <string name="tab_header_label">打开的标签页</string>
     <!-- Title for the list of tabs in the current private session -->
-    <string name="tabs_header_private_title">隐私浏览状态</string>
+    <string name="tabs_header_private_title">隐私浏览阶段</string>
     <!-- Content description (not visible, for screen readers etc.): Add tab button. Adds a news tab when pressed -->
     <string name="add_tab">添加标签页</string>
     <!-- Content description (not visible, for screen readers etc.): Close tab button. Closes the current session when pressed -->
@@ -322,7 +322,7 @@
     <!-- Button in the current session menu. Opens the share menu when pressed -->
     <string name="current_session_share">分享</string>
     <!-- Content description (not visible, for screen readers etc.): Title icon for current session menu -->
-    <string name="current_session_image">当前浏览状态图像</string>
+    <string name="current_session_image">当前浏览阶段图标</string>
     <!-- Button to save the current set of tabs into a collection -->
     <string name="save_to_collection">保存至收藏集</string>
     <!-- Text for the menu button to delete a collection -->
@@ -380,10 +380,10 @@
     <string name="tab_crash_restore">恢复标签页</string>
 
     <!-- Content Description for session item menu button -->
-    <string name="content_description_session_menu">浏览状态选项</string>
+    <string name="content_description_session_menu">浏览阶段选项</string>
 
     <!-- Content Description for session item share button -->
-    <string name="content_description_session_share">分享浏览状态</string>
+    <string name="content_description_session_share">分享浏览阶段</string>
 
     <!-- Bookmarks -->
     <!-- Content description for bookmarks library menu -->
@@ -598,7 +598,7 @@
 
     <!-- Sample text for accessiblity font size -->
     <string name="accessibility_text_size_sample_text">The quick brown fox jumps over the lazy dog. The quick brown fox jumps over the lazy dog. 
-中文字体测试：天地玄黄，宇宙洪荒。日月盈仄，辰宿列张。</string>
+中文字体测试：天地玄黄，宇宙洪荒。日月盈昃，辰宿列张。</string>
     <!-- Summary for Accessiblity Text Size Scaling Preference -->
     <string name="preference_accessibility_text_size_summary">放大或缩小网站上的文字</string>
     <!-- Title for Accessiblity Text Size Scaling Preference -->
@@ -607,7 +607,7 @@
     <!-- Title for Accessiblity Text Automatic Size Scaling Preference -->
     <string name="preference_accessibility_auto_size">自动调整字体大小</string>
     <!-- Summary for Accessiblity Text Automatic Size Scaling Preference -->
-    <string name="preference_accessibility_auto_size_summary">字体大小将跟随您的 Android 设置。禁用此项以管理字体大小。</string>
+    <string name="preference_accessibility_auto_size_summary">字体大小将跟随您的 Android 设置。禁用此项设定后可以在此手动调整。</string>
 
     <!-- Title for the Delete browsing data preference -->
     <string name="preferences_delete_browsing_data">删除浏览数据</string>
@@ -674,7 +674,7 @@
     The first parameter is an icon that represents private browsing -->
     <string name="onboarding_private_browsing_description">轻点 %s 图标，即可开启隐私浏览。</string>
     <!-- text for the privacy notice onboarding card header -->
-    <string name="onboarding_privacy_notice_header">您的隐私</string>
+    <string name="onboarding_privacy_notice_header">您的隐私权</string>
     <!-- text for the privacy notice onboarding card description
     The first parameter is the name of the app (e.g. Firefox Preview) -->
     <string name="onboarding_privacy_notice_description">我们将 %s 设计成让您可以控制要在网络上分享哪些内容、以及与我们分享哪些内容。</string>