diff --git a/res/values/strings.xml b/res/values/strings.xml
index ad8f64d..ae28023 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -665,7 +665,9 @@
     <!-- Title for the useragent switcher lab feature [CHAR LIMIT=40] -->
     <string name="pref_enable_useragent_switcher">Useragent Switcher</string>
     <!-- Summary for the useragent switcher lab feature [CHAR LIMIT=120] -->
-    <string name="pref_enable_useragent_switcher_summary">Toggle between tablet and desktop versions of a site (per tab)</string>
+    <string name="pref_enable_useragent_switcher_summary">Toggle between the tablet and desktop versions of a site</string>
+    <!-- Text explaining how to use the useragent switcher lab feature [CHAR LIMIT=none] -->
+    <string name="help_useragent_switcher">Tap on the Android or laptop icon to toggle between the tablet and desktop versions of a site.</string>
 
     <!-- Title for a dialog displayed when the browser has a data connectivity
             problem -->