diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/PrefsDelegate.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/PrefsDelegate.java
index dffaa7fae..3e90579bc 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/PrefsDelegate.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/PrefsDelegate.java
@@ -191,6 +191,7 @@ public class PrefsDelegate extends DelegateBase
                 ((CheckBoxPreference)(m_activity.findPreference( key )))
                     .setChecked( false );
             }
+            Utils.smsSupportChanged();
         } else if ( key.equals( m_downloadPath ) ) {
             String value = sp.getString( key, null );
             if ( null != value ) {
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/Utils.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/Utils.java
index dd0db5b53..39fa7f35d 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/Utils.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/Utils.java
@@ -141,6 +141,11 @@ public class Utils {
         return s_deviceSupportSMS;
     }
 
+    public static void smsSupportChanged()
+    {
+        s_deviceSupportSMS = null; // force to check again
+    }
+
     public static void notImpl( Context context ) 
     {
         String text = "Feature coming soon";