diff --git a/React/CoreModules/RCTAppState.mm b/React/CoreModules/RCTAppState.mm
index 4211d760d103e8..66a1e72693f2f6 100644
--- a/React/CoreModules/RCTAppState.mm
+++ b/React/CoreModules/RCTAppState.mm
@@ -56,9 +56,14 @@ - (dispatch_queue_t)methodQueue
 
 - (facebook::react::ModuleConstants<JS::NativeAppState::Constants>)getConstants
 {
-  return facebook::react::typedConstants<JS::NativeAppState::Constants>({
-      .initialAppState = RCTCurrentAppState(),
+  __block facebook::react::ModuleConstants<JS::NativeAppState::Constants> constants;
+  RCTUnsafeExecuteOnMainQueueSync(^{
+    constants = facebook::react::typedConstants<JS::NativeAppState::Constants>({
+        .initialAppState = RCTCurrentAppState(),
+    });
   });
+
+  return constants;
 }
 
 #pragma mark - Lifecycle
diff --git a/React/CoreModules/RCTDeviceInfo.mm b/React/CoreModules/RCTDeviceInfo.mm
index 7a168b510ce600..eb5f8217946238 100644
--- a/React/CoreModules/RCTDeviceInfo.mm
+++ b/React/CoreModules/RCTDeviceInfo.mm
@@ -122,14 +122,19 @@ static BOOL RCTIsIPhoneX()
 
 - (NSDictionary<NSString *, id> *)getConstants
 {
-  return @{
-    @"Dimensions" : RCTExportedDimensions(_bridge),
-    // Note:
-    // This prop is deprecated and will be removed in a future release.
-    // Please use this only for a quick and temporary solution.
-    // Use <SafeAreaView> instead.
-    @"isIPhoneX_deprecated" : @(RCTIsIPhoneX()),
-  };
+  __block NSDictionary<NSString *, id> *constants;
+  RCTUnsafeExecuteOnMainQueueSync(^{
+    constants = @{
+      @"Dimensions" : RCTExportedDimensions(self->_bridge),
+      // Note:
+      // This prop is deprecated and will be removed in a future release.
+      // Please use this only for a quick and temporary solution.
+      // Use <SafeAreaView> instead.
+      @"isIPhoneX_deprecated" : @(RCTIsIPhoneX()),
+    };
+  });
+
+  return constants;
 }
 
 - (void)didReceiveNewContentSizeMultiplier
diff --git a/React/CoreModules/RCTPlatform.mm b/React/CoreModules/RCTPlatform.mm
index 3f637d48e66055..fdf746726215db 100644
--- a/React/CoreModules/RCTPlatform.mm
+++ b/React/CoreModules/RCTPlatform.mm
@@ -58,22 +58,27 @@ - (dispatch_queue_t)methodQueue
 
 - (ModuleConstants<JS::NativePlatformConstantsIOS::Constants>)getConstants
 {
-  UIDevice *device = [UIDevice currentDevice];
-  auto versions = RCTGetReactNativeVersion();
-  return typedConstants<JS::NativePlatformConstantsIOS::Constants>({
-      .forceTouchAvailable = RCTForceTouchAvailable() ? true : false,
-      .osVersion = [device systemVersion],
-      .systemName = [device systemName],
-      .interfaceIdiom = interfaceIdiom([device userInterfaceIdiom]),
-      .isTesting = RCTRunningInTestEnvironment() ? true : false,
-      .reactNativeVersion = JS::NativePlatformConstantsIOS::ConstantsReactNativeVersion::Builder(
-          {.minor = [versions[@"minor"] doubleValue],
-           .major = [versions[@"major"] doubleValue],
-           .patch = [versions[@"patch"] doubleValue],
-           .prerelease = [versions[@"prerelease"] isKindOfClass:[NSNull class]]
-               ? folly::Optional<double>{}
-               : [versions[@"prerelease"] doubleValue]}),
+  __block ModuleConstants<JS::NativePlatformConstantsIOS::Constants> constants;
+  RCTUnsafeExecuteOnMainQueueSync(^{
+    UIDevice *device = [UIDevice currentDevice];
+    auto versions = RCTGetReactNativeVersion();
+    constants = typedConstants<JS::NativePlatformConstantsIOS::Constants>({
+        .forceTouchAvailable = RCTForceTouchAvailable() ? true : false,
+        .osVersion = [device systemVersion],
+        .systemName = [device systemName],
+        .interfaceIdiom = interfaceIdiom([device userInterfaceIdiom]),
+        .isTesting = RCTRunningInTestEnvironment() ? true : false,
+        .reactNativeVersion = JS::NativePlatformConstantsIOS::ConstantsReactNativeVersion::Builder(
+            {.minor = [versions[@"minor"] doubleValue],
+             .major = [versions[@"major"] doubleValue],
+             .patch = [versions[@"patch"] doubleValue],
+             .prerelease = [versions[@"prerelease"] isKindOfClass:[NSNull class]]
+                 ? folly::Optional<double>{}
+                 : [versions[@"prerelease"] doubleValue]}),
+    });
   });
+
+  return constants;
 }
 
 - (std::shared_ptr<TurboModule>)getTurboModule:(const ObjCTurboModule::InitParams &)params
diff --git a/React/CoreModules/RCTStatusBarManager.mm b/React/CoreModules/RCTStatusBarManager.mm
index 3dd462a8b78dde..3e62b9df5052c7 100644
--- a/React/CoreModules/RCTStatusBarManager.mm
+++ b/React/CoreModules/RCTStatusBarManager.mm
@@ -185,10 +185,15 @@ - (void)applicationWillChangeStatusBarFrame:(NSNotification *)notification
 
 - (facebook::react::ModuleConstants<JS::NativeStatusBarManagerIOS::Constants>)getConstants
 {
-  return facebook::react::typedConstants<JS::NativeStatusBarManagerIOS::Constants>({
-      .HEIGHT = RCTSharedApplication().statusBarFrame.size.height,
-      .DEFAULT_BACKGROUND_COLOR = folly::none,
+  __block facebook::react::ModuleConstants<JS::NativeStatusBarManagerIOS::Constants> constants;
+  RCTUnsafeExecuteOnMainQueueSync(^{
+    constants = facebook::react::typedConstants<JS::NativeStatusBarManagerIOS::Constants>({
+        .HEIGHT = RCTSharedApplication().statusBarFrame.size.height,
+        .DEFAULT_BACKGROUND_COLOR = folly::none,
+    });
   });
+
+  return constants;
 }
 
 - (facebook::react::ModuleConstants<JS::NativeStatusBarManagerIOS::Constants>)constantsToExport
diff --git a/ReactCommon/turbomodule/samples/platform/ios/RCTSampleTurboModule.mm b/ReactCommon/turbomodule/samples/platform/ios/RCTSampleTurboModule.mm
index a875ff521ad998..7fa051eae33807 100644
--- a/ReactCommon/turbomodule/samples/platform/ios/RCTSampleTurboModule.mm
+++ b/ReactCommon/turbomodule/samples/platform/ios/RCTSampleTurboModule.mm
@@ -7,6 +7,7 @@
 
 #import "RCTSampleTurboModule.h"
 
+#import <React/RCTUtils.h>
 #import <UIKit/UIKit.h>
 
 using namespace facebook::react;
@@ -45,14 +46,19 @@ - (void)invalidate
 
 - (NSDictionary *)getConstants
 {
-  UIScreen *mainScreen = UIScreen.mainScreen;
-  CGSize screenSize = mainScreen.bounds.size;
+  __block NSDictionary *constants;
+  RCTUnsafeExecuteOnMainQueueSync(^{
+    UIScreen *mainScreen = UIScreen.mainScreen;
+    CGSize screenSize = mainScreen.bounds.size;
 
-  return @{
-    @"const1" : @YES,
-    @"const2" : @(screenSize.width),
-    @"const3" : @"something",
-  };
+    constants = @{
+      @"const1" : @YES,
+      @"const2" : @(screenSize.width),
+      @"const3" : @"something",
+    };
+  });
+
+  return constants;
 }
 
 // TODO: Remove once fully migrated to TurboModule.