diff --git a/mozilla-mobile/fenix/app/src/main/res/values/strings.xml b/mozilla-mobile/fenix/app/src/main/res/values/strings.xml
index 1002234cfd9..4b19ad7906d 100644
--- a/mozilla-mobile/fenix/app/src/main/res/values/strings.xml
+++ b/mozilla-mobile/fenix/app/src/main/res/values/strings.xml
@@ -396,8 +396,6 @@
 
     <!-- Search Fragment -->
     <!-- Button in the search view that lets a user search by scanning a QR code -->
-    <string name="search_scan_button" moz:removedIn="133" tools:ignore="UnusedResources">Scan</string>
-    <!-- Button in the search view that lets a user search by scanning a QR code -->
     <string name="search_scan_button_2">Scan QR code</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">Search engine settings</string>
@@ -419,8 +417,6 @@
     <string name="search_settings_menu_item">Search settings</string>
     <!-- Header text for the search selector menu -->
     <string name="search_header_menu_item_2">This time search in:</string>
-    <!-- Content description (not visible, for screen readers etc.): Search engine icon. The first parameter is the search engine name (for example: DuckDuckGo). -->
-    <string name="search_engine_icon_content_description" tools:ignore="UnusedResources" moz:removedIn="133">%s search engine</string>
     <!-- Content description (not visible, for screen readers etc.): Search engine icon.
     The parameter is the search engine name (for example: DuckDuckGo). -->
     <string name="search_engine_icon_content_description_1">Search engine: %s</string>
@@ -505,10 +501,6 @@
     <!-- Onboarding sub header for the add-ons card, used by Nimbus experiments. -->
     <string name="onboarding_add_on_sub_header" tools:ignore="UnusedResources">Add third-party extensions to enhance your security, productivity, and more.</string>
     <!-- Onboarding add-ons card, for checking more add-ons on, used by Nimbus experiments. -->
-    <string name="onboarding_add_on_explore_more_extensions" tools:ignore="UnusedResources" moz:removedIn="133">Explore more extensions.</string>
-    <!-- Onboarding add-ons card, button for start browsing, used by Nimbus experiments. -->
-    <string name="onboarding_add_on_start_browsing_button" tools:ignore="UnusedResources" moz:removedIn="133">Start browsing.</string>
-    <!-- Onboarding add-ons card, for checking more add-ons on, used by Nimbus experiments. -->
     <string name="onboarding_add_on_explore_more_extensions_2">Explore more extensions</string>
     <!-- Onboarding add-ons card, button for start browsing, used by Nimbus experiments. -->
     <string name="onboarding_add_on_start_browsing_button_2">Start browsing</string>
@@ -667,8 +659,6 @@
     <string name="preferences_category_advanced">Advanced</string>
     <!-- Preference category for privacy and security settings -->
     <string name="preferences_category_privacy_security">Privacy and security</string>
-    <!-- Preference for advanced site permissions -->
-    <string name="preferences_site_permissions" moz:removedIn="133" tools:ignore="UnusedResources">Site permissions</string>
     <!-- Preference for advanced site settings -->
     <string name="preferences_site_settings">Site settings</string>
     <!-- Preference for private browsing options -->
@@ -1191,9 +1181,15 @@
     <!-- Title for the list of tabs -->
     <string name="tab_header_label">Open tabs</string>
     <!-- Title for the list of tabs in the current private session -->
-    <string name="tabs_header_private_tabs_title">Private tabs</string>
+    <string name="tabs_header_private_tabs_title" moz:removedIn="136" tools:ignore="UnusedResources">Private tabs</string>
+    <!-- Title for the list of tabs in the current private session used by a11y services
+    The %1$s will be replaced by the number of opened private tabs -->
+    <string name="tabs_header_private_tabs_counter_title">Private Tabs Open: %1$s. Tap to switch tabs.</string>
     <!-- Title for the list of tabs in the synced tabs -->
-    <string name="tabs_header_synced_tabs_title">Synced tabs</string>
+    <string name="tabs_header_synced_tabs_title" moz:removedIn="136" tools:ignore="UnusedResources">Synced tabs</string>
+    <!-- Title for the list of tabs in the synced tabs used by a11y services
+    The %1$s will be replaced by the number of opened synced tabs -->
+    <string name="tabs_header_synced_tabs_counter_title">Synced Tabs Open: %1$s. Tap to switch tabs.</string>
     <!-- Content description (not visible, for screen readers etc.): Add tab button. Adds a news tab when pressed -->
     <string name="add_tab">Add tab</string>
     <!-- Content description (not visible, for screen readers etc.): Add tab button. Adds a news tab when pressed -->
@@ -1310,7 +1306,10 @@
     <string name="webcompat_reporter_cancel">Cancel</string>
     <!-- The button text for the send button to submit the provided form data. -->
     <string name="webcompat_reporter_send">Send</string>
-
+    <!-- Text for a snackbar to confirm the successful submission of a WebCompat report. -->
+    <string name="webcompat_reporter_success_snackbar_text">Your report was sent</string>
+    <!-- Button text for closing or dismissing the snackbar shown after successfully submitting a WebCompat report. -->
+    <string name="webcompat_reporter_dismiss_success_snackbar_text">Close</string>
 
     <!-- These reason strings are dropdown options on a WebCompat reporter form, indicating what is broken on the site. -->
     <!-- Broken site reason text for site slow or not working -->