功能與 API

Android 16 為開發人員推出了強大的新功能和 API。以下各節會簡要說明這些功能，協助您開始使用相關 API。

如需新增、修改及移除 API 的詳細清單，請參閱 API 差異比較表。如要進一步瞭解新的 API，請參閱 Android API 參考資料 - 新的 API 會醒目顯示，以利於查看。

此外，也請查看平台變更可能對應用程式造成的影響。詳情請參閱下列頁面：

核心功能

Android 包含可擴充 Android 系統核心功能的新 API。

2025 年推出兩項 Android API

  • This preview is for the next major release of Android with a planned launch in Q2 of 2025. This release is similar to all of our API releases in the past, where we can have planned behavior changes that are often tied to a targetSdkVersion.
  • We're planning the major release a quarter earlier (Q2 rather than Q3 in prior years) to better align with the schedule of device launches across our ecosystem, so more devices can get the major release of Android sooner. With the major release coming in Q2, you'll need to do your annual compatibility testing a few months earlier than in previous years to make sure your apps are ready.
  • We plan to have another release in Q4 of 2025 which also will include new developer APIs. The Q2 major release will be the only release in 2025 to include planned behavior changes that could affect apps.

In addition to new developer APIs, the Q4 minor release will pick up feature updates, optimizations, and bug fixes; it will not include any app-impacting behavior changes.

Timeline view of Android releases in 2025, noting that the 25Q2 release is a major release and the 25Q4 release is a minor release.

We'll continue to have quarterly Android releases. The Q1 and Q3 updates in-between the API releases will provide incremental updates to help ensure continuous quality. We're actively working with our device partners to bring the Q2 release to as many devices as possible.

Using new APIs with major and minor releases

Guarding a code block with a check for API level is done today using the SDK_INT constant with VERSION_CODES. This will continue to be supported for major Android releases.

if (SDK_INT >= VERSION_CODES.BAKLAVA) {
  // Use APIs introduced in Android 16
}

The new SDK_INT_FULL constant can be used for API checks against both major and minor versions with the new VERSION_CODES_FULL enumeration.

if (SDK_INT_FULL >= VERSION_CODES_FULL.[MAJOR or MINOR RELEASE]) {
  // Use APIs introduced in a major or minor release
}

You can also use the Build.getMinorSdkVersion() method to get just the minor SDK version.

val minorSdkVersion = Build.getMinorSdkVersion(VERSION_CODES_FULL.BAKLAVA)

These APIs have not yet been finalized and are subject to change, so please send us feedback if you have any concerns.

使用者體驗和系統 UI

Android 16 可讓應用程式開發人員和使用者進一步控管及彈性設定裝置，以符合自身需求。

以進度為主的通知

Android 16 推出以進度為主的通知，協助使用者順暢追蹤使用者啟動的端對端歷程。

Notification.ProgressStyle 是一種新的通知樣式，可讓您建立以進度為主的通知。主要用途包括共乘、外送和導航。在 Notification.ProgressStyle 類別中，您可以使用點和區隔，表示使用者歷程中的狀態和里程碑。

To learn more, see the Progress-centric notifications documentation page.

在螢幕鎖定畫面上顯示以進度為主的通知。
通知欄中顯示以進度為主的通知。

預測返回更新

Android 16 adds new APIs to help you enable predictive back system animations in gesture navigation such as the back-to-home animation. Registering the onBackInvokedCallback with the new PRIORITY_SYSTEM_NAVIGATION_OBSERVER allows your app to receive the regular onBackInvoked call whenever the system handles a back navigation without impacting the normal back navigation flow.

Android 16 additionally adds the finishAndRemoveTaskCallback() and moveTaskToBackCallback. By registering these callbacks with the OnBackInvokedDispatcher, the system can trigger specific behaviors and play corresponding ahead-of-time animations when the back gesture is invoked.

更豐富的觸覺回饋

自诞生之日起，Android 就提供了对触感反馈致动器的控制。

Android 11 添加了对更复杂的触感反馈效果的支持，更高级的致动器可以通过设备定义的语义基元 VibrationEffect.Compositions 支持这些效果。

Android 16 添加了触感反馈 API，让应用能够定义触感反馈效果的振幅和频率曲线，同时抽象出设备功能之间的差异。

開發人員工作效率和工具

我們致力於改善您的工作效率，因此大部分工作都圍繞在 Android Studio、Jetpack Compose 和 Android Jetpack 程式庫等工具。不過，我們也會持續尋找平台上的各種方法，協助您實現願景。

動態桌布的內容處理方式

在 Android 16 中，动态壁纸框架将获得一个新的 content API，以应对由用户驱动的动态壁纸带来的挑战。目前，包含用户提供的内容的实时壁纸需要复杂的服务专用实现。Android 16 引入了 WallpaperDescription 和 WallpaperInstance。借助 WallpaperDescription，您可以识别同一服务中的动态壁纸的不同实例。例如，如果某张壁纸同时在主屏幕和锁定屏幕上显示，则这两种情况下显示的内容可能各不相同。壁纸选择器和 WallpaperManager 会使用此元数据更好地向用户呈现壁纸，从而简化创建多样化个性化动态壁纸体验的过程。

效能和電池

Android 16 推出多項 API，可協助您收集應用程式的深入分析資訊。

系統觸發的剖析

ProfilingManager was added in Android 15, giving apps the ability to request profiling data collection using Perfetto on public devices in the field. However, since this profiling must be started from the app, critical flows such as startups or ANRs would be difficult or impossible for apps to capture.

To help with this, Android 16 introduces system-triggered profiling to ProfilingManager. Apps can register interest in receiving traces for certain triggers such as cold start reportFullyDrawn or ANRs, and then the system starts and stops a trace on the app's behalf. After the trace completes, the results are delivered to the app's data directory.

ApplicationStartInfo 中的啟動元件

ApplicationStartInfo was added in Android 15, allowing an app to see reasons for process start, start type, start times, throttling, and other useful diagnostic data. Android 16 adds getStartComponent() to distinguish what component type triggered the start, which can be helpful for optimizing the startup flow of your app.

更深入瞭解工作

JobScheduler#getPendingJobReason() API 會傳回工作可能處於待處理狀態的原因。不過，工作可能會因多種原因而處於待處理狀態。

在 Android 16 中，我們推出了全新的 API JobScheduler#getPendingJobReasons(int jobId)，可傳回工作處於待處理狀態的多種原因，包括開發人員設定的明確限制，以及系統設定的隱含限制。

我們也推出 JobScheduler#getPendingJobReasonsHistory(int jobId)，可傳回最新約束條件變更的清單。

建議您使用 API 來偵測工作未執行的原因，特別是當您發現特定工作成功率降低，或特定工作完成時間延遲時，就需要進行偵錯。例如，在背景更新小工具時發生錯誤，或是在應用程式啟動前無法呼叫預先擷取工作。

這也能協助您進一步瞭解，某些工作是否因系統定義的限制而無法完成，而非明確設定的限制。

自動調整刷新率

Android 15 中引入的自适应刷新率 (ARR) 可让受支持硬件上的显示屏刷新率使用离散的 VSync 步长来适应内容帧速率。这不仅降低了功耗，还无需进行可能导致卡顿的模式切换。

Android 16 引入了 hasArrSupport() 和 getSuggestedFrameRate(int)，同时恢复了 getSupportedRefreshRates()，以便您的应用更轻松地利用 ARR。RecyclerView 1.4 在从快速滑动或平滑滚动中稳定下来时会在内部支持 ARR，我们将继续努力，将 ARR 支持添加到更多 Jetpack 库中。这篇帧速率文章介绍了许多可用于设置帧速率的 API，以便您的应用可以直接使用 ARR。

ADPF 中的 Headroom API

The SystemHealthManager introduces the getCpuHeadroom and getGpuHeadroom APIs, designed to provide games and resource-intensive apps with estimates of available CPU and GPU resources. These methods offer a way for you to gauge how your app or game can best improve system health, particularly when used in conjunction with other Android Dynamic Performance Framework (ADPF) APIs that detect thermal throttling.

By using CpuHeadroomParams and GpuHeadroomParams on supported devices, you can customize the time window used to compute the headroom and select between average or minimum resource availability. This can help you reduce your CPU or GPU resource usage accordingly, leading to better user experiences and improved battery life.

無障礙設定

Android 16 新增了無障礙 API 和功能，可協助您為所有使用者提供應用程式。

改良的無障礙 API

Android 16 添加了其他 API 来增强界面语义，这有助于为依赖于无障碍服务（例如 TalkBack）的用户提高一致性。

为文字添加轮廓，以最大限度地提高文字对比度

视力较低的用户对对比度的敏感度通常较低，因此很难将对象与背景区分开来。为了帮助这些用户，Android 16 引入了轮廓文本，取代了高对比度文本，后者会在文本周围绘制较大的对比度区域，以大大提高可辨性。

Android 16 包含新的 AccessibilityManager API，可让您的应用检查或注册监听器，以查看此模式是否已启用。这主要适用于 Compose 等界面工具包，以提供类似的视觉体验。如果您维护界面工具包库，或者您的应用执行绕过 android.text.Layout 类的自定义文本渲染，则可以使用此方法来了解何时启用轮廓文本。

Android 16 推出新的轮廓文本无障碍功能前后，对比度更高的文本

向 TtsSpan 添加了时长

Android 16 使用 TYPE_DURATION 扩展了 TtsSpan，其中包含 ARG_HOURS、ARG_MINUTES 和 ARG_SECONDS。这样，您就可以直接为时长添加注释，确保通过 TalkBack 等服务获得准确且一致的文本转语音输出。

支持具有多个标签的元素

Android 目前允许界面元素从其他元素派生其无障碍功能标签，现在还支持关联多个标签，这是 Web 内容中常见的情况。通过在 AccessibilityNodeInfo 中引入基于列表的 API，Android 可以直接支持这些多标签关系。在进行这项更改的过程中，我们已弃用 AccessibilityNodeInfo#setLabeledBy 和 #getLabeledBy，改用 #addLabeledBy、#removeLabeledBy 和 #getLabeledByList。

改进了对可展开元素的支持

Android 16 添加了无障碍功能 API，可让您传达互动元素（例如菜单和展开式列表）的展开或收起状态。通过使用 setExpandedState 设置展开状态，并使用 CONTENT_CHANGE_TYPE_EXPANDED 内容更改类型调度 TYPE_WINDOW_CONTENT_CHANGED AccessibilityEvents，您可以确保 TalkBack 等屏幕阅读器会读出状态更改，从而提供更直观、更包容的用户体验。

不确定进度条

Android 16 添加了 RANGE_TYPE_INDETERMINATE，让您可以为确定性和不确定性 ProgressBar 微件公开 RangeInfo，从而让 TalkBack 等服务能够更一致地为进度指示器提供反馈。

三态复选框

Android 16 中的新 AccessibilityNodeInfo getChecked 和 setChecked(int) 方法现在除了“已选中”和“未选中”之外，还支持“部分选中”状态。此字段取代了已废弃的布尔值 isChecked 和 setChecked(boolean)。

补充说明

如果无障碍服务提供关于 ViewGroup 的说明，则会将来自其子视图的内容标签合并在一起。如果您为 ViewGroup 提供 contentDescription，无障碍服务会假定您还要覆盖不可聚焦的子视图的说明。如果您想为下拉菜单等内容添加标签（例如“字体系列”），同时保留当前的无障碍功能选择（例如“Roboto”），这可能会造成问题。Android 16 添加了 setSupplementalDescription，以便您提供用于提供 ViewGroup 相关信息的文本，而不会覆盖其子项中的信息。

必填表单字段

Android 16 向 AccessibilityNodeInfo 添加了 setFieldRequired，以便应用可以告知无障碍服务需要输入表单字段。对于填写各种类型表单的用户而言，这是一个重要的场景，即使是简单的必填条款及条件复选框，也能帮助用户始终如一地识别必填字段并在必填字段之间快速导航。

使用 LE Audio 助聽器時，將手機設為語音通話的麥克風輸入裝置

Android 16 新增了一项功能，让 LE Audio 助听器用户能够在助听器的内置麦克风和手机上的麦克风之间切换，以进行语音通话。在嘈杂的环境或助听器麦克风可能无法正常工作的其他情况下，这会很有帮助。

控制 LEA 助聽器的環境音量

Android 16 adds the capability for users of LE Audio hearing aids to adjust the volume of ambient sound that is picked up by the hearing aid's microphones. This can be helpful in situations where background noise is too loud or too quiet.

相機

Android 16 強化了對專業相機使用者的支援，可進行混合式自動曝光，並精確調整色溫和色調。新的夜間模式指標可協助應用程式瞭解何時該切換至夜間模式攝影工作階段，以及何時該切換回來。新的 Intent 動作可讓您更輕鬆地拍攝動態相片，我們也持續改良 Ultra HDR 相片，支援 HEIC 編碼和 ISO 21496-1 草案標準的新參數。

混合式自動曝光

Android 16 adds new hybrid auto-exposure modes to Camera2, allowing you to manually control specific aspects of exposure while letting the auto-exposure (AE) algorithm handle the rest. You can control ISO + AE, and exposure time + AE, providing greater flexibility compared to the current approach where you either have full manual control or rely entirely on auto-exposure.

fun setISOPriority() {
    // ... (Your existing code before the snippet) ...

    val availablePriorityModes = mStaticInfo.characteristics.get(
        CameraCharacteristics.CONTROL_AE_AVAILABLE_PRIORITY_MODES
    )

    // ... (Your existing code between the snippets) ...

    // Turn on AE mode to set priority mode
    reqBuilder.set(
        CaptureRequest.CONTROL_AE_MODE,
        CameraMetadata.CONTROL_AE_MODE_ON
    )
    reqBuilder.set(
        CaptureRequest.CONTROL_AE_PRIORITY_MODE,
        CameraMetadata.CONTROL_AE_PRIORITY_MODE_SENSOR_SENSITIVITY_PRIORITY
    )
    reqBuilder.set(
        CaptureRequest.SENSOR_SENSITIVITY,
        TEST_SENSITIVITY_VALUE
    )
    val request: CaptureRequest = reqBuilder.build()

    // ... (Your existing code after the snippet) ...
}

精確調整色溫和色調

Android 16 增加了对相机的精细色温和色调调整的支持，以更好地支持专业视频录制应用。在较低版本的 Android 中，您可以通过 CONTROL_AWB_MODE 控制白平衡设置，其中包含仅限于预设列表的选项，例如白炽灯、多云和黄昏。COLOR_CORRECTION_MODE_CCT 可让您使用 COLOR_CORRECTION_COLOR_TEMPERATURE 和 COLOR_CORRECTION_COLOR_TINT 根据相关色温精确调整白平衡。

fun setCCT() {
    // ... (Your existing code before this point) ...

    val colorTemperatureRange: Range<Int> =
        mStaticInfo.characteristics[CameraCharacteristics.COLOR_CORRECTION_COLOR_TEMPERATURE_RANGE]

    // Set to manual mode to enable CCT mode
    reqBuilder[CaptureRequest.CONTROL_AWB_MODE] = CameraMetadata.CONTROL_AWB_MODE_OFF
    reqBuilder[CaptureRequest.COLOR_CORRECTION_MODE] = CameraMetadata.COLOR_CORRECTION_MODE_CCT
    reqBuilder[CaptureRequest.COLOR_CORRECTION_COLOR_TEMPERATURE] = 5000
    reqBuilder[CaptureRequest.COLOR_CORRECTION_COLOR_TINT] = 30

    val request: CaptureRequest = reqBuilder.build()

    // ... (Your existing code after this point) ...
}

以下示例展示了应用不同色温和色调调整后的照片效果：

未应用色温或色调调整的原始图片。
将色温调整为 3000 的图片。
将色温调整为 7000 的图片。


将色调级别降低 50 的图片。
色调级别提高了 50 的图片。

相機夜間模式場景偵測

To help your app know when to switch to and from a night mode camera session, Android 16 adds EXTENSION_NIGHT_MODE_INDICATOR. If supported, it's available in the CaptureResult within Camera2.

This is the API we briefly mentioned as coming soon in the How Instagram enabled users to take stunning low light photos blog post. That post is a practical guide on how to implement night mode together with a case study that links higher-quality in-app night mode photos with an increase in the number of photos shared from the in-app camera.

動態相片拍攝意圖動作

Android 16 adds standard Intent actions — ACTION_MOTION_PHOTO_CAPTURE, and ACTION_MOTION_PHOTO_CAPTURE_SECURE — which request that the camera application capture a motion photo and return it.

You must either pass an extra EXTRA_OUTPUT to control where the image will be written, or a Uri through Intent.setClipData(ClipData). If you don't set a ClipData, it will be copied there for you when calling Context.startActivity(Intent).

An example of a motion photo, showing the still image followed by the motion playback.

UltraHDR 圖片強化

An illustration of Standard Dynamic Range (SDR) versus High Dynamic Range (HDR) image quality.

Android 16 continues our work to deliver dazzling image quality with UltraHDR images. It adds support for UltraHDR images in the HEIC file format. These images will get ImageFormat type HEIC_ULTRAHDR and will contain an embedded gainmap similar to the existing UltraHDR JPEG format. We're working on AVIF support for UltraHDR as well, so stay tuned.

In addition, Android 16 implements additional parameters in UltraHDR from the ISO 21496-1 draft standard, including the ability to get and set the colorspace that gainmap math should be applied in, as well as support for HDR encoded base images with SDR gainmaps.

圖形

Android 16 包含最新的圖像改善功能，例如使用 AGSL 自訂圖像效果。

使用 AGSL 製作自訂圖像效果

Android 16 添加了 RuntimeColorFilter 和 RuntimeXfermode，让您可以创作阈值、Sepia 和 Hue Saturation 等复杂效果，并将其应用于绘制调用。从 Android 13 开始，您可以使用 AGSL 创建扩展 Shader 的自定义 RuntimeShader。新 API 反映了这一点，添加了由 AGSL 驱动的 RuntimeColorFilter（用于扩展 ColorFilter）和 Xfermode 效果，让您可以在源像素和目标像素之间实现基于 AGSL 的自定义合成和混合。

private val thresholdEffectString = """
    uniform half threshold;

    half4 main(half4 c) {
        half luminosity = dot(c.rgb, half3(0.2126, 0.7152, 0.0722));
        half bw = step(threshold, luminosity);
        return bw.xxx1 * c.a;
    }"""

fun setCustomColorFilter(paint: Paint) {
   val filter = RuntimeColorFilter(thresholdEffectString)
   filter.setFloatUniform(0.5);
   paint.colorFilter = filter
}

連線能力

Android 16 更新了平台，讓應用程式能使用通訊和無線技術的最新進展。

安全再升級的測距功能

Android 16 adds support for robust security features in Wi-Fi location on supported devices with Wi-Fi 6's 802.11az, allowing apps to combine the higher accuracy, greater scalability, and dynamic scheduling of the protocol with security enhancements including AES-256-based encryption and protection against MITM attacks. This allows it to be used more safely in proximity use cases, such as unlocking a laptop or a vehicle door. 802.11az is integrated with the Wi-Fi 6 standard, leveraging its infrastructure and capabilities for wider adoption and easier deployment.

一般測距 API

Android 16 includes the new RangingManager, which provides ways to determine the distance and angle on supported hardware between the local device and a remote device. RangingManager supports the usage of a variety of ranging technologies such as BLE channel sounding, BLE RSSI-based ranging, Ultra Wideband, and Wi-Fi round trip time.

隨附裝置管理工具裝置狀態

In Android 16, new APIs are being introduced for binding your companion app service. Service will be bound when BLE is in range and Bluetooth is connected and service will be unbound when BLE is out of range or Bluetooth is disconnected. App will receives a new 'onDevicePresenceEvent()' callback based on various of DevicePresenceEvent. More details can be found in 'startObservingDevicePresence(ObservingDevicePresenceRequest)'.

媒體

Android 16 包含多項功能，可提升媒體體驗。

相片挑選工具改良功能

The photo picker provides a safe, built-in way for users to grant your app access to selected images and videos from both local and cloud storage, instead of their entire media library. Using a combination of Modular System Components through Google System Updates and Google Play services, it's supported back to Android 4.4 (API level 19). Integration requires just a few lines of code with the associated Android Jetpack library.

Android 16 includes the following improvements to the photo picker:

  • Embedded photo picker: New APIs that enable apps to embed the photo picker into their view hierarchy. This allows it to feel like a more integrated part of the app while still leveraging the process isolation that allows users to select media without the app needing overly broad permissions. To maximize compatibility across platform versions and simplify your integration, you'll want to use the forthcoming Android Jetpack library if you want to integrate the embedded photo picker.
  • Cloud search in photo picker: New APIs that enable searching from the cloud media provider for the Android photo picker. Search functionality in the photo picker is coming soon.

進階專業影片

Android 16 引入了对高级专业视频 (APV) 编解码器的支持，该编解码器专为专业级高品质视频录制和后期制作而设计。

APV 编解码器标准具有以下特点：

  • 感知上无损的视频画质（接近原始视频画质）
  • 复杂度低且吞吐量高的仅帧内编码（无像素域预测），以更好地支持编辑工作流
  • 支持高比特率范围（最高几十 Gbps），适用于 2K、4K 和 8K 分辨率内容，由轻量级熵编码方案实现
  • 帧平铺，用于沉浸式内容和启用并行编码和解码
  • 支持各种色度采样格式和位深
  • 支持多次解码和重新编码，且不会严重降低视觉质量
  • 支持多视图视频和辅助视频，例如深度、Alpha 和预览
  • 支持 HDR10/10+ 和用户定义的元数据

OpenAPV 项目提供了 APV 的参考实现。Android 16 将实现对 APV 422-10 配置文件的支持，该配置文件提供 YUV 422 色彩采样以及 10 位编码，并且目标比特率最高可达 2 Gbps。

隱私權

Android 16 包含多項功能，可協助應用程式開發人員保護使用者隱私權。

健康資料同步更新

Health Connect adds ACTIVITY_INTENSITY, a data type defined according to World Health Organization guidelines around moderate and vigorous activity. Each record requires the start time, the end time, and whether the activity intensity is moderate or vigorous.

Health Connect also contains updated APIs supporting medical records. This allows apps to read and write medical records in FHIR format with explicit user consent.

Android 版 Privacy Sandbox

Android 16 incorporates the latest version of the Privacy Sandbox on Android, part of our ongoing work to develop technologies where users know their privacy is protected. Our website has more about the Privacy Sandbox on Android developer beta program to help you get started. Check out the SDK Runtime which allows SDKs to run in a dedicated runtime environment separate from the app they are serving, providing stronger safeguards around user data collection and sharing.

安全性

Android 16 包含多項功能，可協助您提升應用程式的安全性及保護應用程式資料。

金鑰共用 API

Android 16 adds APIs that support sharing access to Android Keystore keys with other apps. The new KeyStoreManager class supports granting and revoking access to keys by app uid, and includes an API for apps to access shared keys.

裝置板型規格

Android 16 可讓應用程式充分運用 Android 的板型規格。

電視的標準化影像和音訊品質架構

The new MediaQuality package in Android 16 exposes a set of standardized APIs for access to audio and picture profiles and hardware-related settings. This allows streaming apps to query profiles and apply them to media dynamically:

  • Movies mastered with a wider dynamic range require greater color accuracy to see subtle details in shadows and adjust to ambient light, so a profile that prefers color accuracy over brightness may be appropriate.
  • Live sporting events are often mastered with a narrow dynamic range, but are often watched in daylight, so a profile that preferences brightness over color accuracy can give better results.
  • Fully interactive content wants minimal processing to reduce latency, and wants higher frame rates, which is why many TV's ship with a game profile.

The API allows apps to switch between profiles and users to enjoy tuning supported TVs to best suit their content.

國際化

Android 16 新增多項功能，可提升使用者在不同語言環境下的裝置使用體驗。

直書文字

Android 16 adds low-level support for rendering and measuring text vertically to provide foundational vertical writing support for library developers. This is particularly useful for languages like Japanese that commonly use vertical writing systems. A new flag, VERTICAL_TEXT_FLAG, has been added to the Paint class. When this flag is set using Paint.setFlags, Paint's text measurement APIs will report vertical advances instead of horizontal advances, and Canvas will draw text vertically.

val text = "「春は、曙。」"
Box(
    Modifier.padding(innerPadding).background(Color.White).fillMaxSize().drawWithContent {
        drawIntoCanvas { canvas ->
            val paint = Paint().apply { textSize = 64.sp.toPx() }
            // Draw text vertically
            paint.flags = paint.flags or VERTICAL_TEXT_FLAG
            val height = paint.measureText(text)
            canvas.nativeCanvas.drawText(
                text,
                0,
                text.length,
                size.width / 2,
                (size.height - height) / 2,
                paint
            )
        }
    }
) {}

自訂計量系統

Users can now customize their measurement system in regional preferences within Settings. The user preference is included as part of the locale code, so you can register a BroadcastReceiver on ACTION_LOCALE_CHANGED to handle locale configuration changes when regional preferences change.

Using formatters can help match the local experience. For example, "0.5 in" in English (United States), is "12,7 mm" for a user who has set their phone to English (Denmark) or who uses their phone in English (United States) with the metric system as the measurement system preference.

To find these settings, open the Settings app and navigate to System > Languages & region.