(Your iPad conserves battery life)当您在预定的时间内不与 iPad 互动时，iPad 会自动关闭其显示屏，从而节省电池寿命。但如果它未能做到这一点，可能的原因包括配置错误的自动锁定(Auto-Lock)设置或 iPadOS 中的系统相关故障。
通过以下修复列表工作，您应该能够让您的 iPad 自动关闭。
1.检查自动锁定设置
如果您的 iPad 屏幕没有自动关闭，您可能不小心阻止了自动锁定功能(Auto-Lock)的启动。深入了解设备的显示(Display)和亮度(Brightness)设置应该可以帮助您重新激活该功能并避免电池快速耗尽的问题(avoid issues with rapid battery draining)。
首先打开iPad 上的“设置”应用。(Settings )然后，选择显示和亮度(Display and Brightness)
>自动锁定(Auto-Lock)。如果您将从不(Never )视为活动设置，请选择其他任何自动锁定持续时间 - 2 分钟(2 minutes)、5 分钟(5 minutes)、10 分钟(10 minutes)或15 分钟(15 minutes)。
2.检查引导访问设置
该问题是在iPad 上使用引导式访问时特别出现的吗？(Guided Access)如果是这样，您可能已将屏幕配置为在设置时不自动关闭。
首先，按顶部(Top)按钮三次以禁用引导式访问(Guided Access)（如果您还没有）。然后，转到“设置”(Settings ) > “辅助功能(Accessibility )” > “引导式访问”并选择(Guided Access)“从不(Never )”以外的任何选项，以便在不使用时关闭 iPad 的屏幕。
注意：在(Note:)引导式访问(Guided Access)的显示自动锁定(Display Auto-Lock)设置中选择默认(Default )应该会提示您的 iPad 镜像iPadOS 中的常规自动锁定首选项。(Auto-Lock)
3.重启iPad
如果您没有发现 iPad 上的自动锁定(Auto-Lock)设置有任何异常，您可能正在处理系统软件中的一个小技术故障。重新启动 iPad 是解决此问题的最佳方法。
首先转到“设置”(Settings ) > “常规(General)” 。然后，选择关机(Shut Down )并向右拖动电源(Power )图标以关闭 iPad。
等待至少 30 秒以确保设备已完全断电。然后(Follow)按住顶部(Top )按钮重新启动它。
4.强制重启iPad
如果您的 iPad 似乎在屏幕打开时被冻结，您必须改为强制重启您的 iPad。这涉及按下特定的按钮组合，这些组合会根据设备是否具有主页(Home)按钮而改变。
带 Home 键的 iPad(iPads With Home Button)
同时按住顶部(Top )和主页(Home )按钮，直到您在 iPad 屏幕上看到Apple标志。(Apple)
没有 Home 键的 iPad(iPads Without Home Button)
快速按下并释放音量调高(Volume Up)按钮，按下并释放音量调低(Volume Down)按钮，然后按住侧面(Side )按钮，直到您在 iPad 屏幕上看到Apple标志。
5. 更新 iPadOS
您可能正在处理特定于 iPad 上当前版本的系统软件的问题。如果您最近没有更新 iPadOS，请立即尝试更新。
转到设置(Settings )>常规(General )>软件更新(Software Update)，然后选择下载并安装(Download and Install)以应用所有系统软件更新。
如果您的 iPad 似乎是最新的，请按照自己的方式完成剩余的修复，但请记住在下一个 iPadOS 更新可用时立即应用它。您还可以选择自动更新(Automatic Updates )（在软件更新(Software Update)屏幕中）并打开下载 iPadOS 更新(Download iPadOS Updates )和安装 iPadOS 更新(Install iPadOS Updates )旁边的开关，以允许设备自动更新。
6. 更新应用
有缺陷(Buggy)的应用程序也可能在您的 iPad 上引入问题。例如，如果在与特定应用程序或应用程序交互时出现问题，请尝试更新它们。
为此，请打开App Store，点击您的头像，向下滑动以扫描新更新，然后选择全部更新(Update All)。
您还可以通过转到Settings > App Store并打开(App Store)App Update旁边的开关来启用自动应用更新。
7.恢复所有设置
如果您的 iPad 仍然无法自动关闭，可能是由于系统软件中的设置冲突或损坏。重置 iPadOS 中的设置可以帮助解决这个问题。
转到设置(Settings )>常规(General )>重置(Reset )，然后选择重置所有设置(Reset all Settings)以将所有设置恢复为默认设置。
8. 完全耗尽电池并充电
等到 iPad 的电池完全耗尽并在此之后重新充电也可能有助于修复损坏的自动锁定(Auto-Lock)功能。如果您有时间，请在进行下一个修复之前尝试这样做。
提示：(Tip:)您可以在同时流式传输视频的同时提高亮度（转到设置(Settings )>显示和亮度）来加快电池消耗。(Display & Brightness)
9.恢复出厂设置
如果上述修复均无效，您必须将 iPad 重置为出厂默认设置，因为系统软件的新副本可能正是它再次正常工作所需要的。但是，虽然这也意味着您最终会丢失数据，但您始终可以在重置过程后通过备份恢复所有内容。
首先将数据备份到计算机或 iCloud(backing up your data to a computer or iCloud)。然后，前往“设置”(Settings ) > “通用(General )” > “重置(Reset)”并选择“抹掉所有内容和设置”(Erase All Content & Settings )以将 iPadOS 设备恢复为出厂默认设置。
如需全面的分步指南，请查看本指南以将 iPad 重置为出厂默认设置(resetting an iPad to factory defaults)。
还没有修复？把它带到苹果
通常，重新配置自动锁定设置或重新启动 iPad 几乎总能解决 iPad 无法自动关闭的问题。但如果上述解决方案都没有帮助，要么等待 iPadOS 的下一个版本（可能会解决问题），要么在最近的 Genius Bar 或 Apple Store(closest Genius Bar or Apple Store)进行预订。
iPad Screen Won’t Turn Off Automatically? 9 Fixes to Try
Your iPad conserves battery life by automatically shutting down its display when you don’t interact with it for a predefined amount of time. But if it fails to do that, likely reasons include an incorrectly configured Auto-Lock setting or a system-related fault in iPadOS.
Work your way through the list of fixes that follow, and you should be able to get your iPad to turn off automatically.
1. Check Auto-Lock Setting
If your iPad’s screen doesn’t turn off automatically, you may have accidentally prevented Auto-Lock from kicking into action. Diving into the device’s Display and Brightness settings should help you re-activate the functionality and avoid issues with rapid battery draining.
Start by opening the Settings app on your iPad. Then, select Display and Brightness
> Auto-Lock. If you see Never as the active setting, pick any of the other Auto-Lock time durations instead—2 minutes, 5 minutes, 10 minutes, or 15 minutes.
2. Check Guided Access Settings
Is the issue occurring specifically while using Guided Access on your iPad? If so, you might have configured the screen not to turn off automatically while setting it up.
First, press the Top button three times to disable Guided Access (if you haven’t already). Then, go to Settings > Accessibility > Guided Access and pick any option other than Never to make your iPad’s screen turn off when not in active use.
Note: Selecting Default within Display Auto-Lock settings in Guided Access should prompt your iPad to mirror the general Auto-Lock preferences in iPadOS.
3. Restart iPad
If you don’t notice anything unusual with the Auto-Lock settings on your iPad, you might be dealing with a minor technical glitch in the system software. Restarting your iPad is the best way to fix that.
Begin by going to Settings > General. Then, select Shut Down and drag the Power icon to the right to turn off the iPad.
Wait for at least 30 seconds to make sure that the device has powered down completely. Follow by holding down the Top button to reboot it.
4. Force-Restart iPad
If your iPad appears to be frozen with the screen on, you must force-restart your iPad instead. That involves pressing a specific combination of buttons that change depending on whether the device has a Home button or not.
iPads With Home Button
Press and hold both the Top and Home buttons at the same time until you see the Apple logo on the iPad’s screen.
iPads Without Home Button
Quickly press and release the Volume Up button, press and release the Volume Down button, and press and hold the Side button until you see the Apple logo on the iPad’s screen.
5. Update iPadOS
You might be dealing with an issue specific to the current version of the system software on your iPad. If you haven’t updated iPadOS recently, try doing that now.
Go to Settings > General > Software Update and select Download and Install to apply all system software updates.
If your iPad appears to be up-to-date, work your way through the remaining fixes, but remember to apply the next iPadOS update as soon as it becomes available. You can also select Automatic Updates (within the Software Update screen) and turn on the switches next to Download iPadOS Updates and Install iPadOS Updates to allow the device to update itself automatically.
6. Update Apps
Buggy apps can also introduce issues on your iPad. For example, if the problem occurs while interacting with a specific app or apps, try updating them.
To do that, open the App Store, tap your profile portrait, swipe down to scan for new updates, and select Update All.
You can also enable automatic app updates by heading over to Settings > App Store and turning on the switch next to App Update.
7. Restore All Settings
If your iPad still won’t turn off automatically, it’s probably due to a conflicting or corrupt setting in the system software. Resetting the settings in iPadOS can help fix that.
Go to Settings > General > Reset and select Reset all Settings to revert all settings to their defaults.
8. Drain Battery Fully and Recharge
Waiting until the iPad’s battery drains out fully and recharging it after that may also help fix a broken Auto-Lock functionality. If you have the time, try doing that before moving onto the next fix.
Tip: You can make the battery drain faster by ramping up the brightness (go to Settings > Display & Brightness) while streaming a video simultaneously.
9. Restore Factory Settings
If none of the fixes above worked, you must reset your iPad to factory defaults since a fresh copy of the system software might be just what it needs to work correctly again. But while that also means you’ll end up losing your data, you can always get everything back via a backup after the reset procedure.
Start by backing up your data to a computer or iCloud. Then, go to Settings > General > Reset and select Erase All Content & Settings to revert the iPadOS device to factory defaults.
For a comprehensive step-by-step guide, check out this guide to resetting an iPad to factory defaults.
Still Not Fixed? Take It to Apple
Usually, re-configuring your Auto-Lock settings or restarting your iPad almost always ends up fixing issues where the iPad won’t turn off automatically. But if none of the solutions above helped, either wait for the next release of iPadOS (which may hopefully take care of the problem) or make a reservation at the closest Genius Bar or Apple Store.
