diff --git a/frontend/src/pages/Properties/PropertyDetail.js b/frontend/src/pages/Properties/PropertyDetail.js
index c54099d..5acb081 100644
--- a/frontend/src/pages/Properties/PropertyDetail.js
+++ b/frontend/src/pages/Properties/PropertyDetail.js
@@ -354,6 +354,8 @@ const PropertyDetail = () => {
   const [gpsAccuracy, setGpsAccuracy] = useState(null);
   const [isSnapPreview, setIsSnapPreview] = useState(false);
   const [showAddMenu, setShowAddMenu] = useState(false);
+  // Modal picker to ensure options show reliably on mobile
+  const [showCaptureModeModal, setShowCaptureModeModal] = useState(false);
   const [currentColor, setCurrentColor] = useState(SECTION_COLORS[0]);
   const [showNameModal, setShowNameModal] = useState(false);
   const [pendingSection, setPendingSection] = useState(null);
@@ -813,49 +815,14 @@ const PropertyDetail = () => {
         </div>
         <div className="relative">
           <button
-            onClick={() => setShowAddMenu(v=>!v)}
+            onClick={() => setShowCaptureModeModal(true)}
             className="btn-primary flex items-center gap-2"
             title="Add a lawn section"
           >
             <PlusIcon className="h-5 w-5" />
             Add Lawn Section
           </button>
-          {showAddMenu && (
-            <div className="absolute right-0 mt-2 w-56 bg-white border rounded shadow-lg z-10">
-              <button
-                className="w-full text-left px-3 py-2 hover:bg-gray-50"
-                onClick={() => { setShowAddMenu(false); setIsDrawing(true); setIsGPSPointsMode(false); setIsGPSTraceMode(false); }}
-              >
-                Tap to Draw (manual)
-              </button>
-              <button
-                className="w-full text-left px-3 py-2 hover:bg-gray-50"
-                onClick={() => {
-                  setShowAddMenu(false);
-                  // Enable GPS points mode, disable trace
-                  setIsGPSTraceMode(false);
-                  setIsTracing(false);
-                  if (gpsWatchId) { navigator.geolocation.clearWatch(gpsWatchId); setGpsWatchId(null); }
-                  clearGpsPoints();
-                  setIsGPSPointsMode(true);
-                }}
-              >
-                GPS Points (walk and mark)
-              </button>
-              <button
-                className="w-full text-left px-3 py-2 hover:bg-gray-50"
-                onClick={() => {
-                  setShowAddMenu(false);
-                  // Enable trace mode, disable points mode
-                  setIsGPSPointsMode(false);
-                  clearGpsPoints();
-                  setIsGPSTraceMode(true);
-                }}
-              >
-                Trace Boundary (continuous)
-              </button>
-            </div>
-          )}
+          {/* Dropdown removed in favor of modal for reliability */}
         </div>
       </div>
 
@@ -1097,6 +1064,58 @@ const PropertyDetail = () => {
         </div>
       </div>
 
+      {/* Capture Mode Modal */}
+      {showCaptureModeModal && (
+        <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center" style={{ zIndex: 9999 }}>
+          <div className="bg-white rounded-lg p-6 w-96 max-w-[92vw] shadow-2xl">
+            <h3 className="text-lg font-semibold mb-4">Create Lawn Section</h3>
+            <div className="space-y-3">
+              <button
+                className="w-full px-4 py-3 border rounded hover:bg-gray-50 text-left"
+                onClick={() => {
+                  setShowCaptureModeModal(false);
+                  setIsDrawing(true);
+                  setIsGPSPointsMode(false);
+                  setIsGPSTraceMode(false);
+                }}
+              >
+                <div className="font-medium">Tap to Draw (manual)</div>
+                <div className="text-xs text-gray-600">Tap the map to add corners, double‑tap to finish.</div>
+              </button>
+              <button
+                className="w-full px-4 py-3 border rounded hover:bg-gray-50 text-left"
+                onClick={() => {
+                  setShowCaptureModeModal(false);
+                  setIsGPSTraceMode(false);
+                  setIsTracing(false);
+                  if (gpsWatchId) { navigator.geolocation.clearWatch(gpsWatchId); setGpsWatchId(null); }
+                  clearGpsPoints();
+                  setIsGPSPointsMode(true);
+                }}
+              >
+                <div className="font-medium">GPS Points (walk and mark)</div>
+                <div className="text-xs text-gray-600">Walk to each corner and tap “Mark Point”, then Complete.</div>
+              </button>
+              <button
+                className="w-full px-4 py-3 border rounded hover:bg-gray-50 text-left"
+                onClick={() => {
+                  setShowCaptureModeModal(false);
+                  setIsGPSPointsMode(false);
+                  clearGpsPoints();
+                  setIsGPSTraceMode(true);
+                }}
+              >
+                <div className="font-medium">Trace Boundary (continuous)</div>
+                <div className="text-xs text-gray-600">Start tracing and walk the perimeter. Pause as needed, then Complete.</div>
+              </button>
+            </div>
+            <div className="mt-4 flex justify-end">
+              <button className="btn-secondary" onClick={() => setShowCaptureModeModal(false)}>Cancel</button>
+            </div>
+          </div>
+        </div>
+      )}
+
       {/* Recent History */}
       <div className="mt-8">
         <h2 className="text-lg font-semibold mb-3">Recent History</h2>