diff --git a/java/res/values/strings.xml b/java/res/values/strings.xml
index a6ef5e5..8dde4ba 100644
--- a/java/res/values/strings.xml
+++ b/java/res/values/strings.xml
@@ -190,25 +190,25 @@
     <string name="spoken_description_double_quote">Double quote</string>
     <!-- Spoken description for the "'" keyboard key. -->
     <string name="spoken_description_single_quote">Single quote</string>
-    <!-- Spoken description for the "•" keyboard key. -->
+    <!-- Spoken description for the "\u2022" (BULLET) keyboard key. -->
     <string name="spoken_description_dot">Dot</string>
-    <!-- Spoken description for the "√" keyboard key. -->
+    <!-- Spoken description for the "\u221a" (SQUARE ROOT) keyboard key. -->
     <string name="spoken_description_square_root">Square root</string>
-    <!-- Spoken description for the "π" keyboard key. -->
+    <!-- Spoken description for the "\u03C0" (GREEK SMALL LETTER PI) keyboard key. -->
     <string name="spoken_description_pi">Pi</string>
-    <!-- Spoken description for the "Δ" keyboard key. -->
+    <!-- Spoken description for the "\u0394" (GREEK CAPITAL LETTER DELTA) keyboard key. -->
     <string name="spoken_description_delta">Delta</string>
-    <!-- Spoken description for the "™" keyboard key. -->
+    <!-- Spoken description for the "\u2122" (TRADE MARK SIGN) keyboard key. -->
     <string name="spoken_description_trademark">Trademark</string>
-    <!-- Spoken description for the "℅" keyboard key. -->
+    <!-- Spoken description for the "\u2105" (CARE OF) keyboard key. -->
     <string name="spoken_description_care_of">Care of</string>
     <!-- Spoken description for the "*" keyboard key. -->
     <string name="spoken_description_star">Star</string>
     <!-- Spoken description for the "#" keyboard key. -->
     <string name="spoken_description_pound">Pound</string>
-    <!-- Spoken description for the "…" keyboard key. -->
+    <!-- Spoken description for the "\u2026" (HORIZONTAL ELLIPSIS) keyboard key. -->
     <string name="spoken_description_ellipsis">Ellipsis</string>
-    <!-- Spoken description for the "„" keyboard key. -->
+    <!-- Spoken description for the "\u201E" (DOUBLE LOW-9 QUOTATION MARK) keyboard key. -->
     <string name="spoken_description_low_double_quote">Low double quote</string>
 
     <!-- Voice related labels -->