diff --git a/iphone/CoreApi/CoreApi/Traffic/MWMMapOverlayManager.h b/iphone/CoreApi/CoreApi/Traffic/MWMMapOverlayManager.h
index 1039de396c..5a68b6164d 100644
--- a/iphone/CoreApi/CoreApi/Traffic/MWMMapOverlayManager.h
+++ b/iphone/CoreApi/CoreApi/Traffic/MWMMapOverlayManager.h
@@ -58,6 +58,7 @@ NS_SWIFT_NAME(MapOverlayManager)
 + (BOOL)isoLinesEnabled;
 + (BOOL)guidesEnabled;
 + (BOOL)guidesFirstLaunch;
++ (BOOL)isolinesVisible;
 
 + (void)setTrafficEnabled:(BOOL)enable;
 + (void)setTransitEnabled:(BOOL)enable;
diff --git a/iphone/CoreApi/CoreApi/Traffic/MWMMapOverlayManager.mm b/iphone/CoreApi/CoreApi/Traffic/MWMMapOverlayManager.mm
index 3679609bc8..4653fc3cac 100644
--- a/iphone/CoreApi/CoreApi/Traffic/MWMMapOverlayManager.mm
+++ b/iphone/CoreApi/CoreApi/Traffic/MWMMapOverlayManager.mm
@@ -154,6 +154,10 @@ static NSString *kGuidesWasShown = @"guidesWasShown";
   return ![ud boolForKey:kGuidesWasShown];
 }
 
++ (BOOL)isolinesVisible {
+  return GetFramework().GetIsolinesManager().IsVisible();
+}
+
 + (void)setTrafficEnabled:(BOOL)enable {
   if (enable) {
     [self setGuidesEnabled:false];
diff --git a/iphone/Maps/Classes/CustomViews/MapViewControls/TrafficButton/MWMTrafficButtonViewController.mm b/iphone/Maps/Classes/CustomViews/MapViewControls/TrafficButton/MWMTrafficButtonViewController.mm
index fd251dbe0b..fd0c2d83b7 100644
--- a/iphone/Maps/Classes/CustomViews/MapViewControls/TrafficButton/MWMTrafficButtonViewController.mm
+++ b/iphone/Maps/Classes/CustomViews/MapViewControls/TrafficButton/MWMTrafficButtonViewController.mm
@@ -134,8 +134,13 @@ NSArray<UIImage *> *imagesWithName(NSString *name) {
       [[MWMToast toastWithText:L(@"subway_data_unavailable")] show];
   } else if ([MWMMapOverlayManager isoLinesEnabled]) {
     btn.imageName = @"btn_isoMap_on";
-    if ([MWMMapOverlayManager isolinesState] == MWMMapOverlayIsolinesStateNoData)
+    if ([MWMMapOverlayManager isolinesState] == MWMMapOverlayIsolinesStateEnabled &&
+        ![MWMMapOverlayManager isolinesVisible]) {
+      [[MWMToast toastWithText:L(@"isolines_toast_zooms_1_10")] show];
+      [Statistics logEvent:kStatMapToastShow withParameters:@{kStatType : kStatIsolines}];
+    } else if ([MWMMapOverlayManager isolinesState] == MWMMapOverlayIsolinesStateNoData) {
       [[MWMToast toastWithText:L(@"isolines_location_error_dialog")] show];
+    }
     else if ([MWMMapOverlayManager isolinesState] == MWMMapOverlayIsolinesStateExpiredData)
       [MWMAlertViewController.activeAlertController presentInfoAlert:L(@"isolines_activation_error_dialog") text:@""];
   } else if ([MWMMapOverlayManager guidesEnabled]) {
diff --git a/iphone/Maps/Common/Statistics/StatisticsStrings.h b/iphone/Maps/Common/Statistics/StatisticsStrings.h
index b32c6a2762..2e06d4d689 100644
--- a/iphone/Maps/Common/Statistics/StatisticsStrings.h
+++ b/iphone/Maps/Common/Statistics/StatisticsStrings.h
@@ -273,6 +273,7 @@ static NSString * const kStatMapSponsoredButtonShow = @"Map_SponsoredButton_show
 static NSString * const kStatMapSponsoredButtonClick = @"Map_SponsoredButton_click";
 static NSString * const kStatMapDataSize = @"map_data_size";
 static NSString * const kStatMapSearch = @"Map search";
+static NSString * const kStatMapToastShow = @"Map_Toast_show";
 static NSString * const kStatMapViewStyle = @"Map view style";
 static NSString * const kStatMapViewStyleSettings = @"Map view style settings";
 static NSString * const kStatMapsme = @"maps.me";