diff --git a/TK.CustomMap/TK.CustomMap.Android/TKCustomMapRenderer.cs b/TK.CustomMap/TK.CustomMap.Android/TKCustomMapRenderer.cs
index 13ea8d0..ce06a1c 100644
--- a/TK.CustomMap/TK.CustomMap.Android/TKCustomMapRenderer.cs
+++ b/TK.CustomMap/TK.CustomMap.Android/TKCustomMapRenderer.cs
@@ -261,6 +261,21 @@ private void OnMarkerClick(object sender, GoogleMap.MarkerClickEventArgs e)
             }
         }
         /// <summary>
+        /// Show Infowindow when OpenCallout is True
+        /// </summary>
+        /// <param name="marker"></param>
+        private void OpenCallOut(Marker marker)
+        {
+            if (this.FormsMap == null) return;
+            var item = this._markers.SingleOrDefault(i => i.Value.Id.Equals(marker.Id));
+            if (item.Key == null) return;
+
+            if (item.Key.ShowCallout)
+            {
+                item.Value.ShowInfoWindow();
+            }
+        }
+        /// <summary>
         /// When a drag of a marker ends
         /// </summary>
         /// <param name="sender">Event Sender</param>
@@ -515,6 +530,8 @@ private async void AddPin(TKCustomMapPin pin)
             }
 
             this._markers.Add(pin, this._googleMap.AddMarker(markerWithIcon));
+
+            this.OpenCallOut(this._googleMap.AddMarker(markerWithIcon));
         }
         /// <summary>
         /// Remove a pin from the map and the internal dictionary
diff --git a/TK.CustomMap/TK.CustomMap.iOSUnified/TKCustomMapRenderer.cs b/TK.CustomMap/TK.CustomMap.iOSUnified/TKCustomMapRenderer.cs
index 6aadc3a..bf14d2b 100644
--- a/TK.CustomMap/TK.CustomMap.iOSUnified/TKCustomMapRenderer.cs
+++ b/TK.CustomMap/TK.CustomMap.iOSUnified/TKCustomMapRenderer.cs
@@ -520,6 +520,7 @@ private void UpdatePins(bool firstUpdate = true)
             {
                 i.PropertyChanged -= OnPinPropertyChanged;
                 this.AddPin(i);
+                this.OpenCallOut(i);
             }
 
             if (firstUpdate)
@@ -533,6 +534,31 @@ private void UpdatePins(bool firstUpdate = true)
             this.MapFunctions.RaisePinsReady();
         }
         /// <summary>
+        /// Show Infowindow when OpenCallout is True
+        /// </summary>
+        /// <param name="pin"></param>
+        private void OpenCallOut(TKCustomMapPin pin)
+        {
+            MKAnnotationViewEventArgs e;
+            if (pin == null) return;
+
+            this._selectedAnnotation = new TKCustomMapAnnotation(pin);
+            this.FormsMap.SelectedPin = pin;
+
+            if (pin.OpenCallout)
+            {
+                var selectedAnnotation = this.Map.Annotations
+                   .OfType<TKCustomMapAnnotation>()
+                   .SingleOrDefault(i => i.CustomPin.Equals(pin));
+
+                if (selectedAnnotation != null)
+                {
+                    this._selectedAnnotation = selectedAnnotation;
+                    this.Map.SelectAnnotation(selectedAnnotation, true);
+                }
+            }
+        }
+        /// <summary>
         /// Creates the lines
         /// </summary>
         private void UpdateLines(bool firstUpdate = true)
diff --git a/TK.CustomMap/TK.CustomMap/TKCustomMapPin.cs b/TK.CustomMap/TK.CustomMap/TKCustomMapPin.cs
index ead3779..2d0bd40 100644
--- a/TK.CustomMap/TK.CustomMap/TKCustomMapPin.cs
+++ b/TK.CustomMap/TK.CustomMap/TKCustomMapPin.cs
@@ -13,6 +13,7 @@ public class TKCustomMapPin : TKBase
         private string _title;
         private string _subtitle;
         private bool _showCallout;
+        private bool _openCallout;
         private Position _position;
         private ImageSource _image;
         private bool _isDraggable;
@@ -75,6 +76,14 @@ public bool ShowCallout
             set { this.SetField(ref this._showCallout, value); }
         }
         /// <summary>
+        /// Gets/Sets open the callout without clicked marker
+        /// </summary>
+        public bool OpenShowCallout
+        {
+            get { return this._openCallout; }
+            set { this.SetField(ref this._openCallout, value); }
+        }
+        /// <summary>
         /// Gets/Sets the position of the pin
         /// </summary>
         public Position Position