当您的 iPhone 无法开机或突然黑屏时，您首先想到的可能是您的宝贵数据，以及您是否能够恢复它(recover it)。如果问题足够严重，您可能会认为您需要更换 iPhone。
虽然黑屏死机(black screen of death)是一个常见问题，但您可以采取几个故障排除步骤来修复 iPhone 黑屏问题并使您的设备恢复生机。
本指南解释了 iPhone 黑屏背后的原因以及可帮助您从中恢复的修复。
iPhone黑屏是什么原因？(What Causes the iPhone Black Screen?)
iPhone 屏幕变黑的一些原因包括：
- 没电的电池
- 流氓应用
- 错误或损坏的更新
- 不稳定的固件
- (Inadequate or low space)iPhone空间不足或空间不足
- 因水损坏(water damage)或跌落造成的硬件问题
- 应用程序或软件崩溃
如何修复 iPhone 黑屏问题(How to Fix iPhone Black Screen Issues)
1. 给你的电池充电(1. Charge Your Battery)
尽管这看起来很明显，但值得验证您的 iPhone 的电池是否没电。
大多数设备电池会随着时间的推移而开始退化，这意味着即使您最近为 iPhone 充电，它也可能会意外耗尽电量。此外，可能有一个流氓应用程序可能会耗尽电池，所以你最好让它充电大约 15 到 30 分钟。
电量不足也可能是导致 iPhone 屏幕变黑的原因，但您应该会在短时间内看到充电图标出现。
如果您的 iPhone 对充电没有反应，请检查充电线或壁式充电器是否损坏或有缺陷。如果原装Lightning数据线无法正常工作，您可以尝试为 iPhone 使用第三方充电数据线，(third-party charging cable for the iPhone)但请确保它已通过 Apple 的MFi 计划(MFi Program)认证。
或者，如果您的 iPhone 支持无线充电（iPhone 8 或更新版本） ，您也可以使用无线充电。(wireless charging)
检查充电点以确保其不脏，因为灰尘和污垢可能会导致您的 iPhone 无法正常充电。请参阅我们的指南，了解iPhone 无法充电的原因以及(iPhone isn’t charging and six fixes)解决问题的六个修复方法。
2.强制重启（硬重置）iPhone(2. Force Restart (Hard Reset) the iPhone)
如果您已为 iPhone 电池充电但屏幕仍然黑屏，则可能是软件问题导致您的 iPhone 死机或崩溃。硬重置通常有助于解决可能导致 iPhone 屏幕变黑或无响应的任何软件故障。
3. 更新应用(3. Update Apps)
有时，在使用特定应用程序时，您的 iPhone 屏幕可能会变黑或卡住，尤其是当该应用程序正在您的 iPhone 上加载某些内容或从 Internet 下载时。
在这种情况下，应用程序本身可能存在问题。但是您可以通过重新启动 iPhone 并更新导致问题的特定应用程序来解决黑屏问题。
要更新应用程序，请转到App Store >更新( Updates)选项卡并将任何待处理的更新安装到有问题的应用程序。
如果应用程序在尝试加载视频或其他媒体文件时冻结并且您的 iPhone 屏幕变黑，则问题可能是互联网速度慢(slow internet)。但是，当您达到带宽限制上限时，问题也可能是由于媒体交付网络或您的ISP的限制。(ISP)
您可以等待，看看内容是否会加载并且您的 iPhone 是否恢复正常。或者，您可以切换到更快的互联网连接(switch to a faster internet connection)，并在使用视频应用程序时解决 iPhone 黑屏问题。
4.恢复出厂设置你的 iPhone(4. Factory Reset Your iPhone)
与保持所有数据和设置完好无损的硬重置不同，恢复出厂设置(factory reset)会清除所有内容，让您的手机像购买时一样干净和新。
如果前几个解决方案不能帮助修复 iPhone 黑屏，最好的办法是将设备恢复到出厂设置。
- 要开始使用，请使用Lightning数据线将您的 iPhone 连接到计算机，打开iTunes，等待 iTunes 识别您的 iPhone，然后选择您的iPhone 图标(iPhone’s icon)。
- 选择摘要(Summary )>恢复 iPhone(Restore iPhone)。
- 出现提示时备份(Backup)您的 iPhone，以便在所有数据被删除之前保存所有数据，然后选择“恢复”(Restore)以确认您的操作。
等待(Wait)您的 iPhone 重新启动，之后您可以选择从备份中恢复它或将其保留为新 iPhone 并将其更新到最新的 iOS 版本。
5. 将你的 iPhone 置于 DFU 模式(5. Put Your iPhone in DFU Mode)
如果您的 iPhone 屏幕仍然黑屏，无法开机或启动，您可以将其置于设备固件更新 (DFU) 模式(put it into Device Firmware Update (DFU) mode )，看看它是否会再次工作。DFU模式可让您在不启动操作系统的情况下打开 iPhone 并绕过任何潜在问题，因此您可以修改或重新安装操作系统。
- 为此，请将 iPhone 连接到计算机，在Apple标志出现之前按住(Apple)on/off按钮约 10 秒钟，然后在按住音量按钮的同时松开按钮。
- 如果您的 iPhone 屏幕变黑，则说明您处于DFU模式，但如果您看到 iTunes 徽标，则需要重做这些步骤。
- 按照说明完成该过程，然后检查您的 iPhone 屏幕是否恢复正常。
6.重置你的 iPhone 的接近传感器(6. Reset Your iPhone’s Proximity Sensor)
每当您将 iPhone 举到脸上(hold your iPhone up to your face)时，即使设备打开并远离您的脸，屏幕也会变暗并保持黑暗。这是由于接近传感器而发生的，但您可以将其重置并检查是否是您的 iPhone 屏幕变黑的原因。
- 为此，请强制重新启动您的 iPhone 并等待它重新启动，然后点击设置(Settings )>常规( General)。
- 点击重置(Reset)。
- 接下来，点击重置所有设置(Reset All Settings)。
注意(Note)：点击重置所有设置(Reset All Settings)不会删除您的数据；它只会删除您的设置和偏好。
修复 iPhone 的黑屏问题(Fix Black Screen Issues for Your iPhone)
如果您尝试了所有这些解决方案，但您的 iPhone 屏幕仍然黑屏，请在Apple Genius Bar 天才吧(Apple Genius Bar)预约或联系 Apple 支持(contact Apple Support)以获得更多指导帮助。
请记住(Remember)对您的 iPhone 进行电池健康检查，保持设备充电，并从可靠来源安装第三方应用程序，以避免屏幕冻结或崩溃。还建议您使用防病毒软件(antivirus)检查您的 iPhone，以避免任何错误攻击并避免越狱您的设备(jailbreaking your device)，因为这可能会违反内置的安全措施。
如果您的设备屏幕为空白或白色，请参阅我们的iPhone 白屏指南以及如何修复它(iPhone White Screen and how to fix it)。我们还列出了当您的iPhone 触摸屏不工作(iPhone touch screen isn’t working)时要采取的一些故障排除步骤。
How to Fix iPhone Black Screen Issues
When your iPhone won’t turn on or the screen suddenly goes black, the first thing you may think of is your precious data and whether you’ll be able to recover it. If the problem is bad enough, you may think that you’ll need to replace your iPhone.
While the black screen of death is a common problem, there are several troubleshooting steps you can take to fix iPhone black screen issues and bring your device back to life.
This guide explains the reasons behind the iPhone black screen and the fixes that will help you recover from it.
What Causes the iPhone Black Screen?
Some of the reasons why your iPhone screen may go black include:
How to Fix iPhone Black Screen Issues
1. Charge Your Battery
As obvious as this may seem, it’s worth verifying that your iPhone’s battery isn’t dead.
Most device batteries start degrading over time, meaning that your iPhone may run out of juice unexpectedly even if you recently charged it. Moreover, there may be a rogue app that could be draining the battery, so you’re better off letting it charge for about 15 to 30 minutes.
Lack of power may also be responsible for your iPhone’s screen going black, but you should see the charging icon appearing after a short period of time.
In case your iPhone doesn’t respond to a recharge, check whether the charging cable or your wall charger is damaged or defective. If the original Lightning cable isn’t working, you could try a third-party charging cable for the iPhone but make sure it’s certified under Apple’s MFi Program.
Alternatively, you can use wireless charging if your iPhone supports it (iPhone 8 or newer).
Check the charging point to ensure that it’s not dirty, as dust and dirt may cause your iPhone not to charge properly. See our guide on why your iPhone isn’t charging and six fixes to resolve the problem.
2. Force Restart (Hard Reset) the iPhone
If you’ve charged the iPhone battery but the screen is still black, there could be a software issue that’s causing your iPhone to freeze or crash. A hard reset usually helps resolve any software glitches that may render your iPhone screen black or unresponsive.
3. Update Apps
Sometimes your iPhone screen may go black or get stuck when using a particular app, especially if the app is loading something on your iPhone or downloading from the internet.
In such cases, it’s likely that there’s an issue with the app itself. But you can resolve black screen issues by restarting your iPhone and updating the particular app that’s causing the problem.
To update an app, go to App Store > Updates tab and install any pending updates to the troublesome app.
If the app freezes and your iPhone’s screen goes black while trying to load videos or other media files, the issue could be slow internet. However, the problem could also be due to throttling by the media delivery network or your ISP, when you hit a bandwidth limit cap.
You could wait it out and see whether the content will load and your iPhone returns to normal. Alternatively, you could switch to a faster internet connection and resolve the iPhone black screen issue when using video apps.
4. Factory Reset Your iPhone
Unlike a hard reset, which keeps all your data and settings intact, a factory reset erases everything and leaves your phone as clean and new as it was when you bought it.
If the first few solutions didn’t help fix the iPhone black screen, your best bet would be to restore the device to its factory settings.
- To get started, connect your iPhone to a computer using the Lightning cable, open iTunes, wait for iTunes to recognize your iPhone and then select your iPhone’s icon.
- Select Summary > Restore iPhone.
- Backup your iPhone when prompted in order to save all your data before it’s all deleted, and then select Restore to confirm your action.
Wait for your iPhone to restart, after which you can choose to restore it from the backup or leave it as a new iPhone and update it to the latest iOS version.
5. Put Your iPhone in DFU Mode
If your iPhone screen is still black, won’t turn on or boot up, you can put it into Device Firmware Update (DFU) mode and see if it’ll work again. DFU mode lets you turn on your iPhone and bypass any underlying issues without launching the OS so you can modify or reinstall the operating system.
- To do this, connect your iPhone into your computer, hold down the on/off button for about 10 seconds before the Apple logo appears and then release the button while holding down the Volume button.
- If your iPhone screen goes black, you’re in DFU mode, but if you see an iTunes logo, you’ll need to redo these steps.
- Follow the instructions to complete the process and then check if your iPhone’s screen is restored back to normal.
6. Reset Your iPhone’s Proximity Sensor
Whenever you hold your iPhone up to your face, the screen goes dim and stays dark even when the device is on and away from your face. This happens because of the proximity sensor, but you can reset it and check whether it’s the reason why your iPhone screen is black.
- To do this, force restart your iPhone and wait for it to restart, and then tap Settings > General.
- Tap Reset.
- Next, tap Reset All Settings.
Note: Tapping Reset All Settings won’t erase your data; it simply erases your settings and preferences.
Fix Black Screen Issues for Your iPhone
If you’ve tried all these solutions and your iPhone screen is still black, set up an appointment at an Apple Genius Bar or contact Apple Support for more guided assistance.
Remember to keep a battery health check for your iPhone, keep the device charged, and install third party apps from reliable sources to avoid screen freezing or crashing. It’s also advisable to check your iPhone with an antivirus to avoid any bug attacks and avoid jailbreaking your device as this may breach the built-in security measures.
If your device’s screen is blank or white, turn to our guide on the iPhone White Screen and how to fix it. We’ve also listed some troubleshooting steps to take when your iPhone touch screen isn’t working.
