diff --git a/ios/OralTrainer.xcodeproj/project.xcworkspace/xcuserdata/liushuming.xcuserdatad/UserInterfaceState.xcuserstate b/ios/OralTrainer.xcodeproj/project.xcworkspace/xcuserdata/liushuming.xcuserdatad/UserInterfaceState.xcuserstate
index 0ce9aee..3b3d8e5 100644
Binary files a/ios/OralTrainer.xcodeproj/project.xcworkspace/xcuserdata/liushuming.xcuserdatad/UserInterfaceState.xcuserstate and b/ios/OralTrainer.xcodeproj/project.xcworkspace/xcuserdata/liushuming.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/ios/OralTrainer/AppDelegate.swift b/ios/OralTrainer/AppDelegate.swift
index 5efd84d..ec7ccc7 100644
--- a/ios/OralTrainer/AppDelegate.swift
+++ b/ios/OralTrainer/AppDelegate.swift
@@ -9,4 +9,38 @@ final class AppDelegate: NSObject, UIApplicationDelegate {
     ) -> UIInterfaceOrientationMask {
         AppDelegate.orientationLock
     }
+
+    static func lockOrientation(_ mask: UIInterfaceOrientationMask) {
+        orientationLock = mask
+        guard let scene = UIApplication.shared.connectedScenes
+            .compactMap({ $0 as? UIWindowScene })
+            .first(where: { $0.activationState == .foregroundActive })
+            ?? UIApplication.shared.connectedScenes.compactMap({ $0 as? UIWindowScene }).first
+        else {
+            return
+        }
+
+        func update(_ controller: UIViewController?) {
+            guard let controller else { return }
+            controller.setNeedsUpdateOfSupportedInterfaceOrientations()
+            update(controller.presentedViewController)
+            controller.children.forEach { update($0) }
+        }
+
+        let requested: UIInterfaceOrientationMask
+        if mask.contains(.landscapeRight) {
+            requested = .landscapeRight
+        } else if mask.contains(.landscapeLeft) {
+            requested = .landscapeLeft
+        } else {
+            requested = mask
+        }
+
+        scene.windows.forEach { update($0.rootViewController) }
+        scene.requestGeometryUpdate(.iOS(interfaceOrientations: requested)) { _ in }
+        DispatchQueue.main.async {
+            scene.windows.forEach { update($0.rootViewController) }
+            scene.requestGeometryUpdate(.iOS(interfaceOrientations: requested)) { _ in }
+        }
+    }
 }
diff --git a/ios/OralTrainer/Resources/Info.plist b/ios/OralTrainer/Resources/Info.plist
index e67e3d5..1cb0a2f 100644
--- a/ios/OralTrainer/Resources/Info.plist
+++ b/ios/OralTrainer/Resources/Info.plist
@@ -33,6 +33,8 @@
 	<string>需要麦克风权限才能进行录音评测</string>
 	<key>UILaunchScreen</key>
 	<dict/>
+	<key>UIRequiresFullScreen</key>
+	<true/>
 	<key>UISupportedInterfaceOrientations</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>
diff --git a/ios/OralTrainer/Views/FullscreenPlayerView.swift b/ios/OralTrainer/Views/FullscreenPlayerView.swift
index 6ed296e..4ee8ff3 100644
--- a/ios/OralTrainer/Views/FullscreenPlayerView.swift
+++ b/ios/OralTrainer/Views/FullscreenPlayerView.swift
@@ -9,6 +9,29 @@ struct FullscreenPlayerView: View {
     @State private var explanationSentence: SentenceBoundary?
 
     var body: some View {
+        GeometryReader { proxy in
+            let fakeLandscape = proxy.size.height > proxy.size.width
+            playerChrome
+                .frame(
+                    width: fakeLandscape ? proxy.size.height : proxy.size.width,
+                    height: fakeLandscape ? proxy.size.width : proxy.size.height
+                )
+                .rotationEffect(.degrees(fakeLandscape ? -90 : 0))
+                .frame(width: proxy.size.width, height: proxy.size.height)
+        }
+        .background(Color.black)
+        .ignoresSafeArea()
+        .statusBarHidden(true)
+        .sheet(item: $explanationSentence) { sentence in
+            SentenceExplanationSheet(
+                mediaId: controller.currentItem?.id ?? "",
+                courseTitle: controller.currentItem?.title ?? "口语训练课程",
+                sentence: sentence
+            )
+        }
+    }
+
+    private var playerChrome: some View {
         ZStack {
             Color.black.ignoresSafeArea()
             PlayerSurfaceView(controller: controller) { isSwipeUp in
@@ -95,13 +118,6 @@ struct FullscreenPlayerView: View {
             }
             .padding(16)
         }
-        .sheet(item: $explanationSentence) { sentence in
-            SentenceExplanationSheet(
-                mediaId: controller.currentItem?.id ?? "",
-                courseTitle: controller.currentItem?.title ?? "口语训练课程",
-                sentence: sentence
-            )
-        }
     }
 
     @State private var progressDragging = false
diff --git a/ios/OralTrainer/Views/RootView.swift b/ios/OralTrainer/Views/RootView.swift
index f45305a..ef48f4c 100644
--- a/ios/OralTrainer/Views/RootView.swift
+++ b/ios/OralTrainer/Views/RootView.swift
@@ -115,7 +115,9 @@ struct RootView: View {
             FullscreenPlayerView(controller: controller) {
                 exitFullscreen()
             }
-            .onAppear(perform: enterFullscreen)
+            .onAppear {
+                AppDelegate.lockOrientation(.landscape)
+            }
         }
     }
 
@@ -519,26 +521,14 @@ struct RootView: View {
     // MARK: - Fullscreen
 
     private func enterFullscreen() {
-        AppDelegate.orientationLock = UIDevice.current.userInterfaceIdiom == .pad ? .all : .landscape
-        updateSupportedInterfaceOrientations()
+        AppDelegate.lockOrientation(.landscape)
         showFullscreenPlayer = true
     }
 
     private func exitFullscreen() {
-        AppDelegate.orientationLock = UIDevice.current.userInterfaceIdiom == .pad ? .all : .portrait
-        updateSupportedInterfaceOrientations()
+        let restored: UIInterfaceOrientationMask =
+            UIDevice.current.userInterfaceIdiom == .pad ? .all : .portrait
+        AppDelegate.lockOrientation(restored)
         showFullscreenPlayer = false
     }
-
-    private func updateSupportedInterfaceOrientations() {
-        let scenes = UIApplication.shared.connectedScenes.compactMap { $0 as? UIWindowScene }
-        let controllers = scenes.flatMap { $0.windows }.compactMap(\.rootViewController)
-        for controller in controllers {
-            if #available(iOS 16.0, *) {
-                controller.setNeedsUpdateOfSupportedInterfaceOrientations()
-            } else {
-                UIViewController.attemptRotationToDeviceOrientation()
-            }
-        }
-    }
 }