diff --git a/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterEngine.mm b/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterEngine.mm
index 1632f0408a3..9fddc3f4bfe 100644
--- a/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterEngine.mm
+++ b/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterEngine.mm
@@ -699,7 +699,7 @@ static constexpr int kNumProfilerSamplesPerSec = 5;
   host_config.io_config =
       fml::Thread::ThreadConfig(flutter::ThreadHost::ThreadHostConfig::MakeThreadName(
                                     flutter::ThreadHost::Type::IO, threadLabel.UTF8String),
-                                fml::Thread::ThreadPriority::BACKGROUND);
+                                fml::Thread::ThreadPriority::NORMAL);
 
   return (flutter::ThreadHost){host_config};
 }
diff --git a/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterEngineTest.mm b/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterEngineTest.mm
index 4663d54820e..d03781cc482 100644
--- a/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterEngineTest.mm
+++ b/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterEngineTest.mm
@@ -6,6 +6,8 @@
 #import <OCMock/OCMock.h>
 #import <XCTest/XCTest.h>
 
+#import <objc/runtime.h>
+
 #import "flutter/common/settings.h"
 #import "flutter/shell/platform/darwin/common/framework/Headers/FlutterMacros.h"
 #import "flutter/shell/platform/darwin/ios/framework/Source/FlutterBinaryMessengerRelay.h"
@@ -261,4 +263,32 @@ FLUTTER_ASSERT_ARC
   [self waitForExpectationsWithTimeout:1 handler:nil];
 }
 
+- (void)testThreadPrioritySetCorrectly {
+  XCTestExpectation* prioritiesSet = [self expectationWithDescription:@"prioritiesSet"];
+  prioritiesSet.expectedFulfillmentCount = 3;
+
+  IMP mockSetThreadPriority =
+      imp_implementationWithBlock(^(NSThread* thread, double threadPriority) {
+        if ([thread.name hasSuffix:@".ui"]) {
+          XCTAssertEqual(threadPriority, 1.0);
+          [prioritiesSet fulfill];
+        } else if ([thread.name hasSuffix:@".raster"]) {
+          XCTAssertEqual(threadPriority, 1.0);
+          [prioritiesSet fulfill];
+        } else if ([thread.name hasSuffix:@".io"]) {
+          XCTAssertEqual(threadPriority, 0.5);
+          [prioritiesSet fulfill];
+        }
+      });
+  Method method = class_getInstanceMethod([NSThread class], @selector(setThreadPriority:));
+  IMP originalSetThreadPriority = method_getImplementation(method);
+  method_setImplementation(method, mockSetThreadPriority);
+
+  FlutterEngine* engine = [[FlutterEngine alloc] init];
+  [engine run];
+  [self waitForExpectationsWithTimeout:1 handler:nil];
+
+  method_setImplementation(method, originalSetThreadPriority);
+}
+
 @end