diff --git a/apps/shared/post_and_hardware_tests.cpp b/apps/shared/post_and_hardware_tests.cpp
index 944568fdc..4eaea2323 100644
--- a/apps/shared/post_and_hardware_tests.cpp
+++ b/apps/shared/post_and_hardware_tests.cpp
@@ -17,7 +17,46 @@ bool POSTAndHardwareTests::VBlankOK() {
   return result;
 }
 
+void ColorPixelBuffer(KDColor * pixels, int numberOfPixels, KDColor c) {
+  for (int i = 0; i < numberOfPixels; i++) {
+    pixels[i] = c;
+  }
+}
+
+bool POSTAndHardwareTests::WhiteTilingLCDTestOK() {
+  constexpr int numberOfPixels = k_stampSize * k_stampSize;
+  KDColor whiteStamp[numberOfPixels];
+  KDColor pullStamp[numberOfPixels];
+
+  ColorPixelBuffer(whiteStamp, numberOfPixels, KDColorWhite);
+
+  // Tiling test with pushRect
+  KDColor wantedColor = KDColorWhite;
+  int numberOfInvalidPixels = 0;
+  for (int i = 0; i < Ion::Display::Width / k_stampSize; i++) {
+    for (int j = 0; j < Ion::Display::Height / k_stampSize; j++) {
+      // Push the color
+      Ion::Display::pushRect(KDRect(i * k_stampSize, j * k_stampSize, k_stampSize, k_stampSize), whiteStamp);
+      // Pull the display
+      ColorPixelBuffer(pullStamp, numberOfPixels, KDColorRed);
+      Ion::Display::pullRect(KDRect(i * k_stampSize, j * k_stampSize, k_stampSize, k_stampSize), pullStamp);
+      for (int k = 0; k < numberOfPixels; k++) {
+        if (pullStamp[k] != wantedColor) {
+          numberOfInvalidPixels++;
+          if (numberOfInvalidPixels > k_invalidPixelsLimit) {
+            return false;
+          }
+        }
+      }
+    }
+  }
+  return true;
+}
+
 bool POSTAndHardwareTests::LCDDataOK(int numberOfIterations) {
+  if (!WhiteTilingLCDTestOK()) {
+    return false;
+  }
   for (int iteration = 0; iteration < numberOfIterations; iteration++) {
     Ion::Display::POSTPushMulticolor(iteration, k_stampSize);
     KDColor stamp[k_stampSize*k_stampSize];
diff --git a/apps/shared/post_and_hardware_tests.h b/apps/shared/post_and_hardware_tests.h
index 37875b601..b9059a94d 100644
--- a/apps/shared/post_and_hardware_tests.h
+++ b/apps/shared/post_and_hardware_tests.h
@@ -14,6 +14,7 @@ public:
 private:
   constexpr static int k_stampSize = 8;
   constexpr static int k_invalidPixelsLimit = 2;
+  static bool WhiteTilingLCDTestOK();
   static_assert(Ion::Display::Width % k_stampSize == 0, "Stamps must tesselate the display");
   static_assert(Ion::Display::Height % k_stampSize == 0, "Stamps must tesselate the display");
   static_assert(k_stampSize % 2 == 0, "Even number of XOR needed.");