diff --git a/assets/translations/en.json b/assets/translations/en.json
index 74cac9716..f4b8159bb 100644
--- a/assets/translations/en.json
+++ b/assets/translations/en.json
@@ -156,7 +156,6 @@
   "selectFirstStationTitle": "Please select the first station",
   "longPressNotice": "Press and hold the screen to open the menu.",
   "autoAnnounceBackgroundTitle": "Enable background voice announcement",
-  "bgTtsUnavailableOnAndroid16": "Background playback is not available on Android 16 or later due to OS restrictions.",
   "loadingLocation": "Getting location information...",
   "loadingAPI": "Communicating with server...",
   "routeSearchTitle": "Find a route",
diff --git a/assets/translations/ja.json b/assets/translations/ja.json
index f374af68d..be8cfa737 100644
--- a/assets/translations/ja.json
+++ b/assets/translations/ja.json
@@ -157,7 +157,6 @@
   "selectFirstStationTitle": "始発駅を選択してください",
   "longPressNotice": "画面を長押しするとメニューが開けます",
   "autoAnnounceBackgroundTitle": "バックグラウンド再生",
-  "bgTtsUnavailableOnAndroid16": "Android 16以降ではOSの制限によりバックグラウンド再生を利用できません。",
   "loadingLocation": "位置情報を取得中です",
   "loadingAPI": "サーバーと通信中です",
   "routeSearchTitle": "経路を検索",
diff --git a/src/components/Permitted.tsx b/src/components/Permitted.tsx
index 1020e1988..0169ed589 100644
--- a/src/components/Permitted.tsx
+++ b/src/components/Permitted.tsx
@@ -303,18 +303,11 @@ const PermittedLayout: React.FC<Props> = ({ children }: Props) => {
           enabled: speechEnabledStr === 'true',
         }));
       }
-      const isAndroid16OrHigher =
-        Platform.OS === 'android' && Number(Platform.Version) >= 36;
       if (bgTTSEnabledStr) {
-        const bgEnabled = bgTTSEnabledStr === 'true' && !isAndroid16OrHigher;
         setSpeech((prev) => ({
           ...prev,
-          backgroundEnabled: bgEnabled,
+          backgroundEnabled: bgTTSEnabledStr === 'true',
         }));
-        // Android 16以上で保存値がtrueの場合、永続化もfalseに上書き
-        if (isAndroid16OrHigher && bgTTSEnabledStr === 'true') {
-          AsyncStorage.setItem(ASYNC_STORAGE_KEYS.BG_TTS_ENABLED, 'false');
-        }
       }
       if (ttsEnabledLanguagesStr) {
         try {
diff --git a/src/screens/TTSSettings.tsx b/src/screens/TTSSettings.tsx
index d2f5f2392..b40e4f78e 100644
--- a/src/screens/TTSSettings.tsx
+++ b/src/screens/TTSSettings.tsx
@@ -1,11 +1,10 @@
 import AsyncStorage from '@react-native-async-storage/async-storage';
 import { useNavigation } from '@react-navigation/native';
 import { useAtom, useAtomValue } from 'jotai';
-import React, { useCallback, useEffect, useMemo, useState } from 'react';
+import React, { useCallback, useMemo, useState } from 'react';
 import {
   Alert,
   type GestureResponderEvent,
-  Platform,
   Pressable,
   StyleSheet,
   View,
@@ -23,7 +22,6 @@ import Typography from '~/components/Typography';
 import speechState from '~/store/atoms/speech';
 import { isLEDThemeAtom } from '~/store/atoms/theme';
 import { translate } from '~/translation';
-import { isDevApp } from '~/utils/isDevApp';
 import { ASYNC_STORAGE_KEYS } from '../constants';
 
 type SettingItem = {
@@ -114,18 +112,6 @@ const TTSSettingsScreen: React.FC = () => {
 
   const navigation = useNavigation();
 
-  // Android 16 (API 36) ではバックグラウンド音声再生が制限されるため無効化
-  const isAndroid16OrHigher =
-    !isDevApp && Platform.OS === 'android' && Number(Platform.Version) >= 36;
-
-  // Android 16以上ではバックグラウンド再生を強制的にfalseにする
-  useEffect(() => {
-    if (isAndroid16OrHigher && backgroundEnabled) {
-      setSpeechState((prev) => ({ ...prev, backgroundEnabled: false }));
-      AsyncStorage.setItem(ASYNC_STORAGE_KEYS.BG_TTS_ENABLED, 'false');
-    }
-  }, [isAndroid16OrHigher, backgroundEnabled, setSpeechState]);
-
   const SETTING_ITEMS: SettingItem[] = [
     {
       id: 'enable_tts',
@@ -335,16 +321,8 @@ const TTSSettingsScreen: React.FC = () => {
           isFirst={index === 0}
           isLast={index === SETTING_ITEMS.length - 1}
           onToggle={onToggle}
-          state={
-            item.id === 'enable_bg_tts' &&
-            (!speechEnabled || isAndroid16OrHigher)
-              ? false
-              : state
-          }
-          disabled={
-            item.id === 'enable_bg_tts' &&
-            (!speechEnabled || isAndroid16OrHigher)
-          }
+          state={item.id === 'enable_bg_tts' && !speechEnabled ? false : state}
+          disabled={item.id === 'enable_bg_tts' && !speechEnabled}
         />
       );
     },
@@ -353,7 +331,6 @@ const TTSSettingsScreen: React.FC = () => {
       handleToggleBgTTS,
       speechEnabled,
       backgroundEnabled,
-      isAndroid16OrHigher,
       SETTING_ITEMS.length,
     ]
   );
@@ -379,17 +356,6 @@ const TTSSettingsScreen: React.FC = () => {
           onScroll={handleScroll}
           ListFooterComponent={() => (
             <>
-              {isAndroid16OrHigher ? (
-                <Typography
-                  style={{
-                    marginTop: 12,
-                    fontSize: 14,
-                    color: isLEDTheme ? '#ccc' : '#666',
-                  }}
-                >
-                  {translate('bgTtsUnavailableOnAndroid16')}
-                </Typography>
-              ) : null}
               <View style={{ marginTop: 16 }}>
                 {TTS_LANGUAGE_ITEMS.map((item, index) => {
                   const state = ttsEnabledLanguages.includes(item.id);