diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarkerConstants.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarkerConstants.java
index 8aab2c73c..f1fbae600 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarkerConstants.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarkerConstants.java
@@ -35,4 +35,7 @@ public class ReactMarkerConstants {
     "CREATE_UI_MANAGER_MODULE_CONSTANTS_END";
   public static final String CREATE_MODULE_START = "CREATE_MODULE_START";
   public static final String CREATE_MODULE_END = "CREATE_MODULE_END";
+  public static final String UNPACKER_CHECK_START = "UNPACKER_CHECK_START";
+  public static final String UNPACKER_CHECK_END = "UNPACKER_CHECK_END";
+  public static final String UNPACKER_BUNDLE_EXTRACTED = "UNPACKER_BUNDLE_EXTRACTED";
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/cxxbridge/UnpackingJSBundleLoader.java b/ReactAndroid/src/main/java/com/facebook/react/cxxbridge/UnpackingJSBundleLoader.java
index e667c5d35..a70f82ada 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/cxxbridge/UnpackingJSBundleLoader.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/cxxbridge/UnpackingJSBundleLoader.java
@@ -13,6 +13,8 @@ import android.content.Context;
 import android.content.res.AssetManager;
 
 import com.facebook.infer.annotation.Assertions;
+import com.facebook.react.bridge.ReactMarker;
+import com.facebook.react.bridge.ReactMarkerConstants;
 import com.facebook.soloader.FileLocker;
 import com.facebook.soloader.SysUtil;
 import com.facebook.systrace.Systrace;
@@ -101,6 +103,8 @@ public class UnpackingJSBundleLoader extends JSBundleLoader {
    * directory and unpacks everything again.
    */
   /* package */ void prepare() {
+    ReactMarker.logMarker(ReactMarkerConstants.UNPACKER_CHECK_START);
+
     boolean unpacked = false;
     try {
       lock();
@@ -118,9 +122,15 @@ public class UnpackingJSBundleLoader extends JSBundleLoader {
       throw new RuntimeException(e);
     }
 
+    if (unpacked) {
+      ReactMarker.logMarker(ReactMarkerConstants.UNPACKER_BUNDLE_EXTRACTED);
+    }
+
     if (unpacked && mOnUnpackedCallback != null) {
       mOnUnpackedCallback.run();
     }
+
+    ReactMarker.logMarker(ReactMarkerConstants.UNPACKER_CHECK_END);
   }
 
   private boolean prepareLocked() throws IOException {