diff --git a/java/res/xml/rows_number_normal.xml b/java/res/xml/rows_number_normal.xml
index c59e26247..b77544bc3 100644
--- a/java/res/xml/rows_number_normal.xml
+++ b/java/res/xml/rows_number_normal.xml
@@ -33,6 +33,8 @@
             latin:keyStyle="numKeyStyle" />
         <Key
             latin:keyLabel="-"
+            latin:moreKeys="+"
+            latin:keyLabelFlags="hasPopupHint"
             latin:keyStyle="numFunctionalKeyStyle"
             latin:keyWidth="fillRight" />
     </Row>
diff --git a/java/res/xml/rows_phone.xml b/java/res/xml/rows_phone.xml
index 630b24ea4..9299c2aa5 100644
--- a/java/res/xml/rows_phone.xml
+++ b/java/res/xml/rows_phone.xml
@@ -34,6 +34,8 @@
             latin:keyStyle="num3KeyStyle" />
         <Key
             latin:keyLabel="-"
+            latin:moreKeys="+"
+            latin:keyLabelFlags="hasPopupHint"
             latin:keyStyle="numFunctionalKeyStyle"
             latin:keyWidth="fillRight" />
     </Row>
diff --git a/java/res/xml/rows_phone_symbols.xml b/java/res/xml/rows_phone_symbols.xml
index 7841c56e5..c13018e7c 100644
--- a/java/res/xml/rows_phone_symbols.xml
+++ b/java/res/xml/rows_phone_symbols.xml
@@ -37,6 +37,8 @@
             latin:keyStyle="numKeyStyle" />
         <Key
             latin:keyLabel="-"
+            latin:moreKeys="+"
+            latin:keyLabelFlags="hasPopupHint"
             latin:keyStyle="numFunctionalKeyStyle"
             latin:keyWidth="fillRight" />
     </Row>