diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba27cf8..900adb4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 ## 0.2.2
 
 - 改进: 设备页连接设备后选项卡显示当前配置名
+- 修复: 正确实现 `--disable-screensaver`，`FLAG_KEEP_SCREEN_ON` 而非 `PARTIAL_WAKE_LOCK`
 
 ## 0.2.1
 
diff --git a/TODO.md b/TODO.md
index 9c988e1..e8f4a7c 100644
--- a/TODO.md
+++ b/TODO.md
@@ -2,8 +2,6 @@
 
 # TODO
 
-fix wake lock
-
 ## PARAMS
 
 ### LOWER PRIORITY
diff --git a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/MainActivity.kt b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/MainActivity.kt
index bda8b73..4f23b4b 100644
--- a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/MainActivity.kt
+++ b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/MainActivity.kt
@@ -9,7 +9,7 @@ import io.github.miuzarte.scrcpyforandroid.password.BiometricGate
 import io.github.miuzarte.scrcpyforandroid.password.PasswordRepository
 import io.github.miuzarte.scrcpyforandroid.password.hasAuthenticatedOrigin
 import io.github.miuzarte.scrcpyforandroid.services.AppRuntime
-import io.github.miuzarte.scrcpyforandroid.services.AppWakeLocks
+import io.github.miuzarte.scrcpyforandroid.services.AppScreenOn
 import kotlinx.coroutines.runBlocking
 
 // 生物认证需要 FragmentActivity
@@ -18,7 +18,7 @@ class MainActivity : FragmentActivity() {
         super.onCreate(savedInstanceState)
 
         AppRuntime.init(applicationContext)
-        AppWakeLocks.init(applicationContext)
+        AppScreenOn.register(window)
 
         runBlocking {
             PasswordRepository.refresh()
@@ -41,4 +41,9 @@ class MainActivity : FragmentActivity() {
         super.onResume()
         StreamActivity.dismissActivePictureInPicture()
     }
+
+    override fun onDestroy() {
+        AppScreenOn.unregister(window)
+        super.onDestroy()
+    }
 }
diff --git a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/StreamActivity.kt b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/StreamActivity.kt
index f30e483..1f66119 100644
--- a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/StreamActivity.kt
+++ b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/StreamActivity.kt
@@ -13,6 +13,7 @@ import androidx.core.content.ContextCompat
 import androidx.core.pip.BasicPictureInPicture
 import androidx.fragment.app.FragmentActivity
 import io.github.miuzarte.scrcpyforandroid.pages.StreamScreen
+import io.github.miuzarte.scrcpyforandroid.services.AppScreenOn
 import io.github.miuzarte.scrcpyforandroid.services.PictureInPictureActionReceiver
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
@@ -43,6 +44,7 @@ class StreamActivity : FragmentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         currentActivityRef = WeakReference(this)
+        AppScreenOn.register(window)
 
         registerPipActionReceiver()
 
@@ -87,6 +89,7 @@ class StreamActivity : FragmentActivity() {
         currentActivityRef?.get()
             ?.takeIf { it === this }
             ?.let { currentActivityRef = null }
+        AppScreenOn.unregister(window)
         unregisterPipActionReceiver()
         super.onDestroy()
     }
diff --git a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/DeviceTabScreen.kt b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/DeviceTabScreen.kt
index c9e0323..73277c5 100644
--- a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/DeviceTabScreen.kt
+++ b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/DeviceTabScreen.kt
@@ -39,7 +39,7 @@ import io.github.miuzarte.scrcpyforandroid.scaffolds.LazyColumn
 import io.github.miuzarte.scrcpyforandroid.scaffolds.SectionSmallTitle
 import io.github.miuzarte.scrcpyforandroid.scrcpy.Scrcpy
 import io.github.miuzarte.scrcpyforandroid.services.AppRuntime
-import io.github.miuzarte.scrcpyforandroid.services.AppWakeLocks
+import io.github.miuzarte.scrcpyforandroid.services.AppScreenOn
 import io.github.miuzarte.scrcpyforandroid.services.DeviceAdbBackgroundRunner
 import io.github.miuzarte.scrcpyforandroid.services.DeviceAdbConnectionCoordinator
 import io.github.miuzarte.scrcpyforandroid.services.DeviceAdbSessionState
@@ -235,7 +235,7 @@ fun DeviceTabPage(
 
     DisposableEffect(Unit) {
         onDispose {
-            AppWakeLocks.release()
+            AppScreenOn.release()
         }
     }
     DisposableEffect(adbBackgroundRunner) {
@@ -430,7 +430,7 @@ fun DeviceTabPage(
         // Also stops scrcpy.
         runCatching { scrcpy.stop() }
         runCatching { adbCoordinator.disconnect() }
-        AppWakeLocks.release()
+        AppScreenOn.release()
         adbSession = DeviceAdbSessionState()
         AppRuntime.currentConnectionTarget = null
         clearQuickOnlineForTarget?.let { target ->
@@ -691,7 +691,7 @@ fun DeviceTabPage(
             context.startActivity(StreamActivity.createIntent(context))
         }
         if (resolvedOptions.disableScreensaver)
-            AppWakeLocks.acquire()
+            AppScreenOn.acquire()
 
         adbSession = adbSession.copy(statusLine = "scrcpy 运行中")
         @SuppressLint("DefaultLocale")
@@ -727,7 +727,7 @@ fun DeviceTabPage(
                 showSnackMessage = "scrcpy 已停止，ADB 已断开",
             )
         } else {
-            AppWakeLocks.release()
+            AppScreenOn.release()
             adbSession = adbSession.copy(
                 statusLine = "${currentTarget!!.host}:${currentTarget.port}"
             )
diff --git a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/ScrcpyAllOptionsScreen.kt b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/ScrcpyAllOptionsScreen.kt
index 6dd2168..0bfe2e0 100644
--- a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/ScrcpyAllOptionsScreen.kt
+++ b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/pages/ScrcpyAllOptionsScreen.kt
@@ -988,7 +988,7 @@ internal fun ScrcpyAllOptionsPage(
                     },
                 )
                 SwitchPreference(
-                    title = "scrcpy 启动后保持本机屏幕唤醒",
+                    title = "scrcpy 启动后保持本机屏幕常亮",
                     summary = "--disable-screensaver",
                     checked = soBundle.disableScreensaver,
                     onCheckedChange = {
@@ -996,7 +996,7 @@ internal fun ScrcpyAllOptionsPage(
                             disableScreensaver = it
                         )
                         if (it) snackbar.show(
-                            "不保证可用"
+                            "注意防烧屏，画中画也生效"
                         )
                     },
                 )
diff --git a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/AppScreenOn.kt b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/AppScreenOn.kt
new file mode 100644
index 0000000..abd655c
--- /dev/null
+++ b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/AppScreenOn.kt
@@ -0,0 +1,35 @@
+package io.github.miuzarte.scrcpyforandroid.services
+
+import android.view.Window
+import android.view.WindowManager
+
+object AppScreenOn {
+    private val windows = linkedSetOf<Window>()
+    private var keepScreenOnEnabled = false
+
+    fun register(window: Window) = synchronized(this) {
+        windows += window
+        applyKeepScreenOn(window, enabled = keepScreenOnEnabled)
+    }
+
+    fun unregister(window: Window) = synchronized(this) {
+        windows.remove(window)
+        applyKeepScreenOn(window, enabled = false)
+    }
+
+    fun acquire() = synchronized(this) {
+        if (keepScreenOnEnabled) Unit
+        keepScreenOnEnabled = true
+        windows.forEach { applyKeepScreenOn(window = it, enabled = keepScreenOnEnabled) }
+    }
+
+    fun release() = synchronized(this) {
+        if (!keepScreenOnEnabled) Unit
+        keepScreenOnEnabled = false
+        windows.forEach { applyKeepScreenOn(window = it, enabled = keepScreenOnEnabled) }
+    }
+
+    private fun applyKeepScreenOn(window: Window, enabled: Boolean) =
+        if (enabled) window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        else window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+}
diff --git a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/AppWakeLocks.kt b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/AppWakeLocks.kt
deleted file mode 100644
index 2a9c81a..0000000
--- a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/AppWakeLocks.kt
+++ /dev/null
@@ -1,35 +0,0 @@
-package io.github.miuzarte.scrcpyforandroid.services
-
-import android.annotation.SuppressLint
-import android.content.Context
-import android.os.PowerManager
-
-object AppWakeLocks {
-    private lateinit var appContext: Context
-    private lateinit var powerManager: PowerManager
-
-    fun init(context: Context) {
-        appContext = context.applicationContext
-        powerManager = appContext.getSystemService(Context.POWER_SERVICE) as PowerManager
-    }
-
-    private var wakeLock: PowerManager.WakeLock? = null
-
-    @SuppressLint("WakelockTimeout")
-    fun acquire() {
-        if (wakeLock != null) return
-
-        wakeLock = powerManager.newWakeLock(
-            PowerManager.PARTIAL_WAKE_LOCK,
-            "${appContext.packageName}:scrcpy-wakelock",
-        ).apply {
-            setReferenceCounted(false)
-            acquire()
-        }
-    }
-
-    fun release() {
-        wakeLock?.runCatching { release() }
-        wakeLock = null
-    }
-}
diff --git a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/PictureInPictureActionReceiver.kt b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/PictureInPictureActionReceiver.kt
index c2ddbef..58c01e5 100644
--- a/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/PictureInPictureActionReceiver.kt
+++ b/app/src/main/java/io/github/miuzarte/scrcpyforandroid/services/PictureInPictureActionReceiver.kt
@@ -17,7 +17,6 @@ class PictureInPictureActionReceiver : BroadcastReceiver() {
             try {
                 val appContext = context.applicationContext
                 AppRuntime.init(appContext)
-                AppWakeLocks.init(appContext)
                 runBlocking {
                     AppRuntime.scrcpy?.stop()
                 }