diff --git a/res/values/strings.xml b/res/values/strings.xml
index d3915375bdf..22f6c91a988 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -6466,7 +6466,7 @@
     <!-- [CHAR_LIMIT=NONE] Battery usage item for background usage time -->
     <string name="battery_usage_for_background_time">Background: <xliff:g id="time">%s</xliff:g></string>
     <!-- [CHAR_LIMIT=NONE] Battery usage main screen footer contentt -->
-    <string name="battery_usage_screen_footer">Battery usage data is approximate</string>
+    <string name="battery_usage_screen_footer">Battery usage data is approximate and doesn\'t measure usage when phone is charging</string>
     <!-- Process Stats strings -->
     <skip />