diff --git a/xwords4/android/XWords4/archive/R.java b/xwords4/android/XWords4/archive/R.java
index 65bf6ea5f..45d77bde0 100644
--- a/xwords4/android/XWords4/archive/R.java
+++ b/xwords4/android/XWords4/archive/R.java
@@ -652,6 +652,7 @@ public final class R {
          */
         public static final int button_download=0x7f05018b;
         public static final int button_edit=0x7f0502c4;
+        public static final int button_enable=0x7f050304;
         public static final int button_enable_bt=0x7f050224;
         public static final int button_enable_sms=0x7f050223;
         public static final int button_go_settings=0x7f05025b;
diff --git a/xwords4/android/XWords4/res/values/strings.xml b/xwords4/android/XWords4/res/values/strings.xml
index 67bcc1b51..319f95bad 100644
--- a/xwords4/android/XWords4/res/values/strings.xml
+++ b/xwords4/android/XWords4/res/values/strings.xml
@@ -2491,4 +2491,6 @@
   <string name="confirm_drop_relay_sms">Not all carriers support play
   via SMS.</string>
 
+  <string name="button_enable">Enable</string>
+
 </resources>
diff --git a/xwords4/android/XWords4/res_src/values-ba_CK/strings.xml b/xwords4/android/XWords4/res_src/values-ba_CK/strings.xml
index 46c8dafa8..8b840fbd3 100644
--- a/xwords4/android/XWords4/res_src/values-ba_CK/strings.xml
+++ b/xwords4/android/XWords4/res_src/values-ba_CK/strings.xml
@@ -2154,4 +2154,5 @@
   secived.</string>
   <string name="confirm_drop_relay_sms">Ton lla sreirrac troppus yalp
   aiv SMS.</string>
+  <string name="button_enable">Elbane</string>
 </resources>
diff --git a/xwords4/android/XWords4/res_src/values-ca_PS/strings.xml b/xwords4/android/XWords4/res_src/values-ca_PS/strings.xml
index b7c4adeb4..ae46b8263 100644
--- a/xwords4/android/XWords4/res_src/values-ca_PS/strings.xml
+++ b/xwords4/android/XWords4/res_src/values-ca_PS/strings.xml
@@ -2154,4 +2154,5 @@
   DEVICES.</string>
   <string name="confirm_drop_relay_sms">NOT ALL CARRIERS SUPPORT PLAY
   VIA SMS.</string>
+  <string name="button_enable">ENABLE</string>
 </resources>
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/DlgDelegate.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/DlgDelegate.java
index f805c0aac..274c396bb 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/DlgDelegate.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/DlgDelegate.java
@@ -31,10 +31,13 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.os.Handler;
 import android.view.View;
+import android.widget.AdapterView.OnItemSelectedListener;
+import android.widget.AdapterView;
 import android.widget.Button;
 import android.widget.Spinner;
 import android.widget.TextView;
 import android.widget.Toast;
+
 import java.text.DateFormat;
 import java.util.ArrayList;
 import java.util.Date;
@@ -239,6 +242,9 @@ public class DlgDelegate {
         case INVITE_CHOICES_THEN:
             prepareInviteChoicesDialog( dialog );
             break;
+        case DIALOG_ENABLESMS:
+            prepareEnableSMSDialog( dialog );
+            break;
         }
     }
 
@@ -691,6 +697,7 @@ public class DlgDelegate {
                     Spinner reasons = (Spinner)
                         layout.findViewById( R.id.confirm_sms_reasons );
                     boolean enabled = 0 < reasons.getSelectedItemPosition();
+                    Assert.assertTrue( enabled );
                     Object[] params = { new Boolean(enabled), };
                     m_clickCallback.dlgButtonClicked( state.m_action, 
                                                       AlertDialog.BUTTON_POSITIVE,
@@ -701,12 +708,39 @@ public class DlgDelegate {
         Dialog dialog = LocUtils.makeAlertBuilder( m_activity )
             .setTitle( R.string.confirm_sms_title )
             .setView( layout )
-            .setPositiveButton( android.R.string.ok, lstnr )
+            .setPositiveButton( R.string.button_enable, lstnr )
+            .setNegativeButton( android.R.string.cancel, null )
             .create();
         Utils.setRemoveOnDismiss( m_activity, dialog, dlgID );
         return dialog;
     }
 
+    private void checkEnableButton( Dialog dialog, Spinner reasons )
+    {
+        boolean enabled = 0 < reasons.getSelectedItemPosition();
+        AlertDialog adlg = (AlertDialog)dialog;
+        Button button = adlg.getButton( AlertDialog.BUTTON_POSITIVE );
+        button.setEnabled( enabled );
+    }
+
+    private void prepareEnableSMSDialog( final Dialog dialog ) 
+    {
+        final Spinner reasons = (Spinner)
+            dialog.findViewById( R.id.confirm_sms_reasons );
+
+        OnItemSelectedListener onItemSel = new OnItemSelectedListener() { 
+                public void onItemSelected( AdapterView<?> parent, View view, 
+                                            int position, long id )
+                {
+                    checkEnableButton( dialog, reasons );
+                }
+
+                public void onNothingSelected( AdapterView<?> parent ) {}
+            };
+        reasons.setOnItemSelectedListener( onItemSel );
+        checkEnableButton( dialog, reasons );
+    }
+
     private OnClickListener mkCallbackClickListener( final DlgState state,
                                                      final NotAgainView naView )
     {