diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java
index bdc9d249816ad7..0c8a7f0621b9ea 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java
@@ -17,7 +17,6 @@
 import com.facebook.react.common.MapBuilder;
 import com.facebook.react.common.annotations.VisibleForTesting;
 import com.facebook.react.common.mapbuffer.MapBuffer;
-import com.facebook.react.config.ReactFeatureFlags;
 import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.react.uimanager.IViewManagerWithChildren;
 import com.facebook.react.uimanager.ReactAccessibilityDelegate;
@@ -132,13 +131,10 @@ public boolean needsCustomLayoutForChildren() {
   @Override
   public Object updateState(
       ReactTextView view, ReactStylesDiffMap props, StateWrapper stateWrapper) {
-    if (ReactFeatureFlags.mapBufferSerializationEnabled) {
-      MapBuffer stateMapBuffer = stateWrapper.getStateDataMapBuffer();
-      if (stateMapBuffer != null) {
-        return getReactTextUpdate(view, props, stateMapBuffer);
-      }
+    MapBuffer stateMapBuffer = stateWrapper.getStateDataMapBuffer();
+    if (stateMapBuffer != null) {
+      return getReactTextUpdate(view, props, stateMapBuffer);
     }
-
     ReadableNativeMap state = stateWrapper.getStateData();
     if (state == null) {
       return null;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
index 3db39a7b2927dd..1b5371626fac72 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
@@ -45,7 +45,6 @@
 import com.facebook.react.bridge.WritableNativeMap;
 import com.facebook.react.common.MapBuilder;
 import com.facebook.react.common.mapbuffer.MapBuffer;
-import com.facebook.react.config.ReactFeatureFlags;
 import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.react.uimanager.BaseViewManager;
 import com.facebook.react.uimanager.FabricViewStateManager;
@@ -1295,11 +1294,9 @@ public Object updateState(
 
     stateManager.setStateWrapper(stateWrapper);
 
-    if (ReactFeatureFlags.mapBufferSerializationEnabled) {
-      MapBuffer stateMapBuffer = stateWrapper.getStateDataMapBuffer();
-      if (stateMapBuffer != null) {
-        return getReactTextUpdate(view, props, stateMapBuffer);
-      }
+    MapBuffer stateMapBuffer = stateWrapper.getStateDataMapBuffer();
+    if (stateMapBuffer != null) {
+      return getReactTextUpdate(view, props, stateMapBuffer);
     }
 
     ReadableNativeMap state = stateWrapper.getStateData();
diff --git a/ReactAndroid/src/main/jni/react/fabric/Binding.cpp b/ReactAndroid/src/main/jni/react/fabric/Binding.cpp
index 4afe8bd8475349..d619227359a33b 100644
--- a/ReactAndroid/src/main/jni/react/fabric/Binding.cpp
+++ b/ReactAndroid/src/main/jni/react/fabric/Binding.cpp
@@ -433,10 +433,6 @@ void Binding::installFabricUIManager(
   // Keep reference to config object and cache some feature flags here
   reactNativeConfig_ = config;
 
-  contextContainer->insert(
-      "MapBufferSerializationEnabled",
-      getFeatureFlagValue("mapBufferSerializationEnabled"));
-
   contextContainer->insert(
       "CalculateTransformedFramesEnabled",
       getFeatureFlagValue("calculateTransformedFramesEnabled"));
diff --git a/ReactCommon/react/renderer/textlayoutmanager/platform/android/react/renderer/textlayoutmanager/TextLayoutManager.cpp b/ReactCommon/react/renderer/textlayoutmanager/platform/android/react/renderer/textlayoutmanager/TextLayoutManager.cpp
index 7e94bc54d96b4f..7d67eb0990fe7e 100644
--- a/ReactCommon/react/renderer/textlayoutmanager/platform/android/react/renderer/textlayoutmanager/TextLayoutManager.cpp
+++ b/ReactCommon/react/renderer/textlayoutmanager/platform/android/react/renderer/textlayoutmanager/TextLayoutManager.cpp
@@ -146,8 +146,6 @@ Size measureAndroidComponentMapBuffer(
 TextLayoutManager::TextLayoutManager(
     const ContextContainer::Shared &contextContainer)
     : contextContainer_(contextContainer),
-      mapBufferSerializationEnabled_(
-          contextContainer->at<bool>("MapBufferSerializationEnabled")),
       measureCache_(
           contextContainer->at<bool>("EnableLargeTextMeasureCache")
               ? 1024
@@ -171,11 +169,8 @@ TextMeasurement TextLayoutManager::measure(
           telemetry->willMeasureText();
         }
 
-        auto measurement = mapBufferSerializationEnabled_
-            ? doMeasureMapBuffer(
-                  attributedString, paragraphAttributes, layoutConstraints)
-            : doMeasure(
-                  attributedString, paragraphAttributes, layoutConstraints);
+        auto measurement = doMeasureMapBuffer(
+            attributedString, paragraphAttributes, layoutConstraints);
 
         if (telemetry != nullptr) {
           telemetry->didMeasureText();
@@ -227,60 +222,6 @@ LinesMeasurements TextLayoutManager::measureLines(
     AttributedString const &attributedString,
     ParagraphAttributes const &paragraphAttributes,
     Size size) const {
-  if (mapBufferSerializationEnabled_) {
-    return measureLinesMapBuffer(attributedString, paragraphAttributes, size);
-  }
-
-  const jni::global_ref<jobject> &fabricUIManager =
-      contextContainer_->at<jni::global_ref<jobject>>("FabricUIManager");
-  static auto measureLines =
-      jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-          ->getMethod<NativeArray::javaobject(
-              ReadableMap::javaobject,
-              ReadableMap::javaobject,
-              jfloat,
-              jfloat)>("measureLines");
-
-  auto serializedAttributedString = toDynamic(attributedString);
-
-  local_ref<ReadableNativeMap::javaobject> attributedStringRNM =
-      ReadableNativeMap::newObjectCxxArgs(serializedAttributedString);
-  local_ref<ReadableNativeMap::javaobject> paragraphAttributesRNM =
-      ReadableNativeMap::newObjectCxxArgs(toDynamic(paragraphAttributes));
-
-  local_ref<ReadableMap::javaobject> attributedStringRM = make_local(
-      reinterpret_cast<ReadableMap::javaobject>(attributedStringRNM.get()));
-  local_ref<ReadableMap::javaobject> paragraphAttributesRM = make_local(
-      reinterpret_cast<ReadableMap::javaobject>(paragraphAttributesRNM.get()));
-
-  auto array = measureLines(
-      fabricUIManager,
-      attributedStringRM.get(),
-      paragraphAttributesRM.get(),
-      size.width,
-      size.height);
-
-  auto dynamicArray = cthis(array)->consume();
-  LinesMeasurements lineMeasurements;
-  lineMeasurements.reserve(dynamicArray.size());
-
-  for (auto const &data : dynamicArray) {
-    lineMeasurements.push_back(LineMeasurement(data));
-  }
-
-  // Explicitly release smart pointers to free up space faster in JNI tables
-  attributedStringRM.reset();
-  attributedStringRNM.reset();
-  paragraphAttributesRM.reset();
-  paragraphAttributesRNM.reset();
-
-  return lineMeasurements;
-}
-
-LinesMeasurements TextLayoutManager::measureLinesMapBuffer(
-    AttributedString const &attributedString,
-    ParagraphAttributes const &paragraphAttributes,
-    Size size) const {
   const jni::global_ref<jobject> &fabricUIManager =
       contextContainer_->at<jni::global_ref<jobject>>("FabricUIManager");
   static auto measureLines =
diff --git a/ReactCommon/react/renderer/textlayoutmanager/platform/android/react/renderer/textlayoutmanager/TextLayoutManager.h b/ReactCommon/react/renderer/textlayoutmanager/platform/android/react/renderer/textlayoutmanager/TextLayoutManager.h
index 711e617fc729f0..63694bc1bbc66d 100644
--- a/ReactCommon/react/renderer/textlayoutmanager/platform/android/react/renderer/textlayoutmanager/TextLayoutManager.h
+++ b/ReactCommon/react/renderer/textlayoutmanager/platform/android/react/renderer/textlayoutmanager/TextLayoutManager.h
@@ -90,7 +90,6 @@ class TextLayoutManager {
 
   void *self_{};
   ContextContainer::Shared contextContainer_;
-  bool mapBufferSerializationEnabled_;
   TextMeasureCache measureCache_;
 };