功能和 API

Android 16 面向开发者引入了一些出色的新功能和 API。以下部分总结了这些功能，可帮助您开始使用相关 API。

如需详细了解新增、修改和移除的 API，请参阅 API 差异报告。如需详细了解新的 API，请访问 Android API 参考文档，新 API 会突出显示以方便查看。

您还应查看平台变更可能会在哪些方面影响您的应用。如需了解详情，请参阅以下页面：

核心功能

Android 包含可扩展 Android 系统核心功能的新 API。

2025 年发布了两个 Android API

  • 此预览版适用于 Android 的下一个主要版本，计划于 2025 年第 2 季度发布。此版本与我们过去的所有 API 版本类似，我们可以进行计划性的行为更改，这些更改通常与 targetSdkVersion 相关联。
  • 我们计划提前一个季度（2021 年第 2 季度，而非之前的第 3 季度）发布主要版本，以便更好地与整个生态系统中的设备发布时间表保持一致，让更多设备能够更早地搭载 Android 主要版本。由于主要版本将于第 2 季度发布，因此您需要比往年提前几个月进行年度兼容性测试，以确保您的应用已做好准备。
  • 我们计划在 2025 年第 4 季度再发布一次，届时还将推出新的开发者 API。2025 年只有第二季度的主要版本包含可能影响应用的计划行为变更。

除了新的开发者 API 之外，第 4 季度次要版本还将包含功能更新、优化和 bug 修复；其中不会包含任何会影响应用的行为变更。

2025 年 Android 版本的时间轴视图，请注意，25Q2 版本是一个主要版本，25Q4 版本是一个次要版本。

我们将继续每季度发布 Android 版本。在 API 版本之间，第 1 季度和第 3 季度的更新将提供增量更新，以帮助确保持续提供高质量的服务。我们正积极与设备合作伙伴合作，将 Q2 版本推广到尽可能多的设备。

在主要版本和次要版本中使用新 API

目前，使用 SDK_INT 常量与 VERSION_CODES 结合使用，即可通过检查 API 级别来保护代码块。我们将继续支持主要 Android 版本。

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

新的 SDK_INT_FULL 常量可用于针对主要版本和次要版本进行 API 检查，并使用新的 VERSION_CODES_FULL 枚举。

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

您还可以使用 Build.getMinorSdkVersion() 方法仅获取 SDK 次要版本。

val minorSdkVersion = Build.getMinorSdkVersion(VERSION_CODES_FULL.BAKLAVA)

这些 API 尚未最终确定，可能会发生变化，因此如果您有任何疑虑，请向我们发送反馈。

用户体验和系统界面

Android 16 让应用开发者和用户可以更灵活地控制设备配置，以满足他们的需求。

以进度为中心的通知

Android 16 引入了以进度为中心的通知，可帮助用户顺畅地跟踪用户发起的端到端历程。

Notification.ProgressStyle 是一种新的通知样式，可让您创建以进度为中心的通知。主要用例包括共享车辆、送货和导航。在 Notification.ProgressStyle 类中，您可以使用点和细分来表示用户体验历程中的状态和里程碑。

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

锁屏上显示的以进度为中心的通知。
在通知栏中显示的以进度为中心的通知。

预测性返回更新

Android 16 添加了新 API，可帮助您在手势导航中启用预测性返回系统动画，例如“返回主屏幕”动画。通过使用新的 PRIORITY_SYSTEM_NAVIGATION_OBSERVER 注册 onBackInvokedCallback，您的应用可以在系统处理返回导航时接收常规的 onBackInvoked 调用，而不会影响正常的返回导航流程。

Android 16 还添加了 finishAndRemoveTaskCallback() 和 moveTaskToBackCallback。通过向 OnBackInvokedDispatcher 注册这些回调，系统可以在调用返回手势时触发特定行为并播放相应的提前动画。

更丰富的触感反馈

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。

开发者工作效率和工具

虽然我们为提高开发者效率所做的大部分工作都集中在 Android Studio、Jetpack Compose 和 Android Jetpack 库等工具上，但我们始终在寻找各种方法，通过平台帮助您实现愿景。

动态壁纸的内容处理

In Android 16, the live wallpaper framework is gaining a new content API to address the challenges of dynamic, user-driven wallpapers. Currently, live wallpapers incorporating user-provided content require complex, service-specific implementations. Android 16 introduces WallpaperDescription and WallpaperInstance. WallpaperDescription lets you identify distinct instances of a live wallpaper from the same service. For example, a wallpaper that has instances on both the home screen and on the lock screen may have unique content in both places. The wallpaper picker and WallpaperManager use this metadata to better present wallpapers to users, streamlining the process for you to create diverse and personalized live wallpaper experiences.

性能和电池

Android 16 引入了一些 API，可帮助您收集有关应用的数据分析。

系统触发的性能分析

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.

在 ApplicationStartInfo 中启动组件

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.

改进了作业自省

The JobScheduler#getPendingJobReason() API returns a reason why a job might be pending. However, a job might be pending for multiple reasons.

In Android 16, we are introducing a new API JobScheduler#getPendingJobReasons(int jobId), which returns multiple reasons why a job is pending, due to both explicit constraints set by the developer and implicit constraints set by the system.

We're also introducing JobScheduler#getPendingJobReasonsHistory(int jobId), which returns a list of the most recent constraint changes.

We recommend using the API to help you debug why your jobs may not be executing, especially if you're seeing reduced success rates of certain tasks or have bugs around latency of certain job completion. For example, updating widgets in the background failed to occur or prefetch job failed to be called prior to app start.

This can also better help you understand if certain jobs are not completing due to system defined constraints versus explicitly set constraints.

自适应刷新率

Adaptive refresh rate (ARR), introduced in Android 15, enables the display refresh rate on supported hardware to adapt to the content frame rate using discrete VSync steps. This reduces power consumption while eliminating the need for potentially jank-inducing mode-switching.

Android 16 introduces hasArrSupport() and getSuggestedFrameRate(int) while restoring getSupportedRefreshRates() to make it easier for your apps to take advantage of ARR. RecyclerView 1.4 internally supports ARR when it is settling from a fling or smooth scroll, and we're continuing our work to add ARR support into more Jetpack libraries. This frame rate article covers many of the APIs you can use to set the frame rate so that your app can directly use 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.

无障碍

Android 16 添加了新的无障碍功能 API 和功能，可帮助您面向每位用户提供应用。

改进了无障碍功能 API

Android 16 adds additional APIs to enhance UI semantics that help improve consistency for users that rely on accessibility services, such as TalkBack.

Outline text for maximum text contrast

Users with low vision often have reduced contrast sensitivity, making it challenging to distinguish objects from their backgrounds. To help these users, Android 16 introduces outline text, replacing high contrast text, which draws a larger contrasting area around text to greatly improve legibility.

Android 16 contains new AccessibilityManager APIs to let your apps check or register a listener to see if this mode is enabled. This is primarily for UI Toolkits like Compose to offer a similar visual experience. If you maintain a UI Toolkit library or your app performs custom text rendering that bypasses the android.text.Layout class then you can use this to know when outline text is enabled.

Text with enhanced contrast before and after Android 16's new outline text accessibility feature

Duration added to TtsSpan

Android 16 extends TtsSpan with a TYPE_DURATION, consisting of ARG_HOURS, ARG_MINUTES, and ARG_SECONDS. This lets you directly annotate time duration, ensuring accurate and consistent text-to-speech output with services like TalkBack.

Support elements with multiple labels

Android currently allows UI elements to derive their accessibility label from another, and now offers the ability for multiple labels to be associated, a common scenario in web content. By introducing a list-based API within AccessibilityNodeInfo, Android can directly support these multi-label relationships. As part of this change, we've deprecated AccessibilityNodeInfo#setLabeledBy and #getLabeledBy in favor of #addLabeledBy, #removeLabeledBy, and #getLabeledByList.

Improved support for expandable elements

Android 16 adds accessibility APIs that allow you to convey the expanded or collapsed state of interactive elements, such as menus and expandable lists. By setting the expanded state using setExpandedState and dispatching TYPE_WINDOW_CONTENT_CHANGED AccessibilityEvents with a CONTENT_CHANGE_TYPE_EXPANDED content change type, you can ensure that screen readers like TalkBack announce state changes, providing a more intuitive and inclusive user experience.

Indeterminate ProgressBars

Android 16 adds RANGE_TYPE_INDETERMINATE, giving a way for you to expose RangeInfo for both determinate and indeterminate ProgressBar widgets, allowing services like TalkBack to more consistently provide feedback for progress indicators.

Tri-state CheckBox

The new AccessibilityNodeInfo getChecked and setChecked(int) methods in Android 16 now support a "partially checked" state in addition to "checked" and "unchecked." This replaces the deprecated boolean isChecked and setChecked(boolean).

Supplemental descriptions

When an accessibility service describes a ViewGroup, it combines content labels from its child views. If you provide a contentDescription for the ViewGroup, accessibility services assume you are also overriding the description of non-focusable child views. This can be problematic if you want to label things like a drop-down (for example, "Font Family") while preserving the current selection for accessibility (for example, "Roboto"). Android 16 adds setSupplementalDescription so you can provide text that provides information about a ViewGroup without overriding information from its children.

Required form fields

Android 16 adds setFieldRequired to AccessibilityNodeInfo so apps can tell an accessibility service that input to a form field is required. This is an important scenario for users filling out many types of forms, even things as simple as a required terms and conditions checkbox, helping users to consistently identify and quickly navigate between required fields.

使用 LEA 助听器进行语音通话时，将手机用作麦克风输入

Android 16 adds the capability for users of LE Audio hearing aids to switch between the built-in microphones on the hearing aids and the microphone on their phone for voice calls. This can be helpful in noisy environments or other situations where the hearing aid's microphones might not perform well.

LEA 助听器的环境音量控制

Android 16 新增了一项功能，可让 LE Audio 助听器用户调节助听器麦克风接收的环境声音的音量。在背景噪音过大或过小的情况下，这可能会很有用。

相机

Android 16 增强了对专业相机用户的支持，支持混合自动曝光以及精确的色温和色调调整。新的夜间模式指示器可帮助应用了解何时切换到夜间模式相机会话以及何时从夜间模式相机会话切换出去。新的 Intent 操作让您可以更轻松地拍摄动态照片，我们还将继续改进 UltraHDR 图片，使其支持 HEIC 编码和 ISO 21496-1 草稿标准中的新参数。

混合自动曝光

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) ...
}

精确调整色温和色调

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。

public void setCCT() {
  ...
  Range<Integer> colorTemperatureRange =
     mStaticInfo.getCharacteristics().get(CameraCharacteristics.
     COLOR_CORRECTION_COLOR_TEMPERATURE_RANGE);
  // Set to manual mode to enable CCT mode
  reqBuilder.set(CaptureRequest.CONTROL_AWB_MODE, CameraMetadata.CONTROL_AWB_MODE_OFF);
  reqBuilder.set(CaptureRequest.COLOR_CORRECTION_MODE,
      CameraMetadata.COLOR_CORRECTION_MODE_CCT);
  reqBuilder.set(CaptureRequest.COLOR_CORRECTION_COLOR_TEMPERATURE, 5000);
  reqBuilder.set(CaptureRequest.COLOR_CORRECTION_COLOR_TINT, 30);
  CaptureRequest request = reqBuilder.build();
  ...
}

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。

相机夜间模式场景检测

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.

动态照片拍摄 intent 操作

Android 16 添加了标准 intent 操作 ACTION_MOTION_PHOTO_CAPTURE 和 ACTION_MOTION_PHOTO_CAPTURE_SECURE，用于请求相机应用拍摄动态照片并将其返回。

您必须传递额外的 EXTRA_OUTPUT 来控制将图片写入的位置，或者通过 Intent.setClipData(ClipData) 传递 Uri。如果您未设置 ClipData，系统会在调用 Context.startActivity(Intent) 时将其复制到该位置。

动态照片示例，显示静态图片和动态播放画面。

UltraHDR 图片美化

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.

图形

Android 16 包含最新的图形改进，例如使用 AGSL 的自定义图形效果。

使用 AGSL 实现自定义图形效果

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
}

连接

Android 16 更新了平台，让您的应用可以使用通信和无线技术的最新进展。

增强型安全范围测算

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.

通用测距 API

Android 16 包含新的 RangingManager，它提供了在受支持的硬件上确定本地设备与远程设备之间的距离和角度的方法。RangingManager 支持使用各种测距技术，例如 BLE 信道声音探测、基于 BLE RSSI 的测距、超宽带和 Wi-Fi 往返时间。

配套设备管理器设备存在性

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)'.

媒体

Android 16 包含多种可改善媒体体验的功能。

改进了照片选择器

照片选择器为用户提供了一种安全的内置授权方式，让用户可以向应用授予对本地存储空间和云端存储空间中所选图片和视频的访问权限，而不是对整个媒体库的访问权限。通过 Google 系统更新和 Google Play 服务组合使用模块化系统组件，该工具向后支持到 Android 4.4（API 级别 19）。只需几行代码即可与相关的 Android Jetpack 库集成。

Android 16 对照片选择器进行了以下改进：

  • 嵌入式照片选择器：新 API，可让应用将照片选择器嵌入其视图层次结构中。这样，它就感觉像是应用中更为集成的一部分，同时仍可利用进程隔离功能，让用户能够选择媒体，而无需应用拥有过于宽泛的权限。为了最大限度地提高跨平台版本的兼容性并简化集成，如果您想集成嵌入式照片选择器，则需要使用即将推出的 Android Jetpack 库。
  • 照片选择器中的云搜索：新的 API 可让 Android 照片选择器从云端媒体提供商中进行搜索。照片选择器中的搜索功能即将推出。

高级专业视频

Android 16 introduces support for the Advanced Professional Video (APV) codec which is designed to be used for professional level high quality video recording and post production.

The APV codec standard has the following features:

  • Perceptually lossless video quality (close to raw video quality)
  • Low complexity and high throughput intra-frame-only coding (without pixel domain prediction) to better support editing workflows
  • Support for high bit-rate range up to a few Gbps for 2K, 4K and 8K resolution content, enabled by a lightweight entropy coding scheme
  • Frame tiling for immersive content and for enabling parallel encoding and decoding
  • Support for various chroma sampling formats and bit-depths
  • Support for multiple decoding and re-encoding without severe visual quality degradation
  • Support multi-view video and auxiliary video like depth, alpha, and preview
  • Support for HDR10/10+ and user-defined metadata

A reference implementation of APV is provided through the OpenAPV project. Android 16 will implement support for the APV 422-10 Profile that provides YUV 422 color sampling along with 10-bit encoding and for target bitrates of up to 2Gbps.

隐私设置

Android 16 包含多种功能，可帮助应用开发者保护用户隐私。

健康数据共享更新

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.

Privacy Sandbox on Android

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

Android 16 包含一些功能，可帮助您增强应用的安全性并保护应用的数据。

密钥共享 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.

设备规格

Android 16 为您的应用提供了支持，可让应用充分利用 Android 的设备规格。

适用于电视的标准化画质和音质框架

Android 16 中的新 MediaQuality 软件包公开了一组标准化 API，用于访问音频和图片配置文件以及与硬件相关的设置。这样，在线播放应用就可以查询配置文件并将其动态应用于媒体：

  • 使用更大动态范围进行母版制作的电影需要更高的色彩准确度，才能看清阴影中的细微细节并根据环境光线进行调整，因此，最好使用色彩准确度优先于亮度的配置文件。
  • 体育赛事直播通常采用较窄的动态范围进行母版制作，但通常是在白天观看，因此偏向亮度而非色彩准确度的配置文件可以获得更好的效果。
  • 完全交互式内容需要尽可能减少处理以缩短延迟时间，并且需要更高的帧速率，因此许多电视都附带游戏配置文件。

借助此 API，应用可以在个人资料之间切换，用户可以享受调整支持的电视，以便尽可能适合其内容。

国际化

Android 16 添加了一些功能，可在用户使用不同语言使用设备时完善用户体验。

垂直文本

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
            )
        }
    }
) {}

自定义衡量系统

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.