diff --git a/drape_frontend/viewport.cpp b/drape_frontend/viewport.cpp
index e67ba1f262..4d5e709e0b 100644
--- a/drape_frontend/viewport.cpp
+++ b/drape_frontend/viewport.cpp
@@ -59,6 +59,11 @@ uint32_t Viewport::GetHeight() const
   return GetLogicHeight() * m_pixelRatio;
 }
 
+float Viewport::GetPixelRatio() const
+{
+  return m_pixelRatio;
+}
+
 void Viewport::Apply() const
 {
   GLFunctions::glViewport(GetX0(), GetY0(), GetWidth(), GetHeight());
diff --git a/drape_frontend/viewport.hpp b/drape_frontend/viewport.hpp
index 3bef34e05d..e98faf3adc 100644
--- a/drape_frontend/viewport.hpp
+++ b/drape_frontend/viewport.hpp
@@ -28,6 +28,7 @@ public:
   uint32_t GetY0() const;
   uint32_t GetWidth() const;
   uint32_t GetHeight() const;
+  float GetPixelRatio() const;
   // Apply viewport to graphics pipeline
   // with convert start poin and size to physical pixels
   void Apply() const;
diff --git a/drape_frontend/visual_params.cpp b/drape_frontend/visual_params.cpp
index 15cd59d376..7d1e976557 100644
--- a/drape_frontend/visual_params.cpp
+++ b/drape_frontend/visual_params.cpp
@@ -178,7 +178,11 @@ int CalculateTileSize(int screenWidth, int screenHeight)
       res = flooredSz;
   }
 
-  return min(max(res / 2, 256), 1024);
+#ifndef OMIM_OS_DESKTOP
+  return my::clamp(res / 2, 256, 1024);
+#else
+  return my::clamp(res / 2, 512, 1024);
+#endif
 }
 
 int GetDrawTileScale(int baseScale)