让您的计算机无法识别您刚刚插入的 USB 设备(computer not recognize a USB device)很烦人。您必须先解决问题，然后看看您是否可以自己解决，而不是继续执行您的任务。唯一更糟糕的是当您的智能手机发生这种情况时。
如果您尝试将USB(USB)电缆从手机插入Android或 iPhone时计算机无法识别您的手机，请尝试以下八个技巧之一来修复它。
1.重启你的电脑和手机(1. Restart Your Computer & Phone)
无论您使用哪种设备，无论是Android还是 iPhone、Mac还是Windows，都从显而易见的开始。尝试重新启动您的设备。这个简单的步骤解决了许多问题，并且可以帮助您解决连接问题。
2. 使用不同的 USB 端口和电缆 (2. Use a Different USB Port And Cable )
可能导致计算机和手机之间出现连接问题的原因之一可能是USB端口或电缆出现故障。如果其中一项损坏，您的计算机将无法连接并识别您的设备。
如果您的计算机有多个USB端口，请尝试使用另一个 USB 端口，看看它是否有效。如果您可以使用不同的 USB 电缆(different USB cable)，请尝试将其与不同的USB端口一起使用。
3.更改USB连接模式（Android）(3. Change the USB Connection Mode (Android))
当您将Android智能手机连接到计算机时，它会根据连接目的提供多种连接模式。如果您的手机以错误的模式连接到您的计算机，可能会导致您的计算机无法识别它。
要更改Android手机上的(Android)USB连接模式，请按照以下步骤操作。根据您手机的型号，步骤的确切名称可能会有所不同。
- 将您的Android智能手机连接到计算机。
- 在智能手机上，通过向下拉来打开通知栏。(notification bar)
- 找到显示当前USB连接模式 的Android 系统通知。(Android system)
- 选择通知以打开手机的USB 偏好设置(USB Preferences)。
- 选择文件传输(File Transfer)或传输文件(Transfer files)。
将USB连接模式更改为文件传输(File Transfer)后，您应该能够在Finder ( Mac ) 或文件资源管理器(File Explorer)( Windows ) 中看到您的手机。您现在可以继续您的任务。
4.检查信任此计算机警报（iPhone）(4. Check the Trust This Computer Alert (iPhone))
首次将 iPhone 连接到计算机时，您会在手机上看到“信任这台计算机(Trust This Computer)”警报。确保(Make)在收到通知时选择信任。(Trust)否则(Otherwise)，您的 iPhone 将无法连接到您的计算机。
如果您之前选择了不信任(Don’t Trust)，则需要重置 iPhone 的位置和隐私(Location & Privacy)设置。为此，请按照以下步骤操作。
- 打开 iPhone 的设置(Settings)。
- 选择常规(General)。
- 选择重置(Reset)。
- 选择重置位置和隐私(Reset Location & Privacy)。
重置设置后，再次将 iPhone 连接到计算机并选择信任(Trust)此计算机。
5. 更新您计算机上的 MTP 驱动程序 (Windows)(5. Update the MTP Drivers on Your Computer (Windows))
如果您在使用智能手机（Android或 iPhone）和Windows计算机时遇到连接问题，则可能是您的MTP驱动程序导致了这些问题。(MTP)MTP（媒体传输协议）驱动程序允许您将手机连接到计算机并将其用作媒体设备。
大多数计算机已经安装了MTP驱动程序，但它们可能已经过时并导致您的连接问题。要手动更新您的MTP驱动程序，请按照以下步骤操作。
- 将手机连接到 PC。
- 右键单击开始(Start )按钮并打开设备管理器(Device Manager)。
- 在Other Devices下，找到Unknown device并右键单击它。然后选择更新驱动程序软件(Update Driver Software)。
- 从位置框中，选择让我从我的计算机的设备驱动程序列表中(Let me pick from a list of device drivers from my computer)选择。
- 在设备列表中找到您的手机并选择它。
- 从设备列表中，选择MTP USB 设备(MTP USB Device)，然后选择下一步(Next)进行确认。
驱动程序升级到最新版本后，您应该会在文件管理器中看到您的(File Manager)Android手机。
6. 更新您的 macOS 和 iTunes (Mac)( 6. Update Your macOS & iTunes (Mac))
如果您在尝试将手机连接到Mac时遇到问题，请检查您是否安装了最新的操作系统版本。过时的 macOS 版本可能会导致您的手机和计算机之间出现连接问题。要检查是否有可用更新，请转到Mac 菜单(Mac menu)>关于本机(About This Mac)>软件更新(Software Update)。
确认您已更新操作系统(you have updated your OS)后，请检查您是否也在使用最新版本的 iTunes，因为旧版本中可能存在导致连接问题的错误。
7. Use Android File Transfer Utility (Android + Mac)
将您的 Android 连接到 Mac(Connecting your Android to Mac)并将文件传输到您的计算机比使用Android和Windows的相同过程要困难一些。一个名为Android File Transfer的特殊实用程序可让您的Mac和Android智能手机之间顺畅连接。
您可以在 Android 官方网站上找到Android文件传输。(Android File Transfer)下载(Download)并安装该实用程序，然后尝试再次将手机插入Mac。您现在应该可以在Mac上使用您的(Mac)Android设备了。
8.启用USB调试（Android）(8. Enable USB Debugging (Android))
如果您在尝试不同的方法后仍然遇到计算机无法看到您的Android手机的问题，您可以尝试启用USB调试作为最后的手段。
Android USB 调试(Android USB debugging)模式是开发人员选项(Developer Options)菜单的一部分。这是一项为应用程序开发人员设计的高级功能，可确保他们的应用程序正常运行并在出现问题时进行诊断。确保(Make)在激活它之前研究所有优点和缺点。
要在智能手机上启用USB调试，请按照以下步骤操作。
- 在您的 Android 智能手机上打开设置。(Settings)
- 向下滚动，直到您看到About phone。
- 继续选择内部版本号(Build number )，直到激活开发人员模式。
- 返回设置(Settings)并选择开发人员选项(Developer options)。
- 选择USB 调试(USB debugging)。
下次将手机连接到计算机时，您应该能够在设备列表中看到它。
如果这些方法都不起作用怎么办？(What If None of These Methods Work?)
如果您觉得您已经尝试了所有方法，但您的计算机仍然无法识别您的手机，请考虑将您的手机硬重置(hard resetting your phone)为出厂设置。它可能会解决导致连接问题的任何问题。但是，它也会擦除您的所有数据。请记住这一点，并确保在重置智能手机之前备份所有重要文件和信息。
你有没有遇到过类似的问题？是什么帮助您修复了计算机无法识别手机的问题？在下面的评论部分与我们分享您修复手机和计算机之间连接的经验。
8 Fixes When Your Computer Doesn’t Recognize Your Phone
Having your computer not recognize a USB device that you just plugged in is annoying. Instead of continuing to do your tasks, you have to troubleshoot the issue first and see if you can fix it yourself. The only thing worse is when that happens to your smartphone.
If your computer doesn’t recognize your phone when you try plugging in a USB cable from it to your Android or iPhone, try one of the eight tips listed below to fix it.
1. Restart Your Computer & Phone
No matter which devices you’re using, whether it’s an Android or iPhone, Mac or Windows, start with the obvious. Try restarting your devices. This simple step solves many problems and can help with your connectivity issues.
2. Use a Different USB Port And Cable
One of the things that may cause connectivity problems between your computer and phone could be a faulty USB port or cable. If one of those things is damaged, your computer won’t connect and recognize your device.
If your computer has multiple USB ports, try using another one and see if it works. If you have access to a different USB cable, try using that with a different USB port.
3. Change the USB Connection Mode (Android)
When you connect your Android smartphone to your computer, it offers several connectivity modes, depending on the connection purpose. If your phone’s connected to your computer in the wrong mode, it could cause your computer not to recognize it.
To change the USB connection mode on your Android phone, follow the steps below. Depending on the model of your phone, the exact names of the steps might be different.
- Connect your Android smartphone to your computer.
- On your smartphone, open the notification bar by pulling it down.
- Find the Android system notification that displays the current USB connection mode.
- Select the notification to open your phone’s USB Preferences.
- Select File Transfer or Transfer files.
After you change the USB connection mode to File Transfer, you should be able to see your phone in Finder (Mac) or File Explorer (Windows). You can now proceed with your tasks.
4. Check the Trust This Computer Alert (iPhone)
When you first connect your iPhone to your computer, you’ll see the Trust This Computer alert on your phone. Make sure to select Trust when you get the notification. Otherwise, your iPhone won’t connect to your computer.
If you have previously selected Don’t Trust, you’ll need to reset your iPhone’s Location & Privacy settings. To do that, follow the steps below.
- Open your iPhone’s Settings.
- Select General.
- Select Reset.
- Select Reset Location & Privacy.
After you’ve reset your settings, connect your iPhone to your computer again and select to Trust this computer.
5. Update the MTP Drivers on Your Computer (Windows)
If you’re facing connectivity problems with your smartphone (Android or iPhone) and your Windows computer, your MTP drivers might be causing them. MTP (media transfer protocol) drivers allow you to connect your phone to your computer and use it as a media device.
Most computers have the MTP drivers installed already, but they might be outdated and causing your connectivity problems. To update your MTP drivers manually, follow the steps below.
- Connect your phone to your PC.
- Right-click the Start button and open the Device Manager.
- Under Other Devices, find Unknown device and right-click it. Then select Update Driver Software.
- From the location box, select Let me pick from a list of device drivers from my computer.
- Find your phone in the list of devices and select it.
- From the list of devices, select MTP USB Device and select Next to confirm.
After the drivers are upgraded to the latest version, you should see your Android phone in File Manager.
6. Update Your macOS & iTunes (Mac)
If you’re having issues when trying to connect your phone to a Mac, check if you have the latest operating system version installed. The outdated macOS version might be causing connection problems between your phone and computer. To check if there’s an update available, go to Mac menu > About This Mac > Software Update.
After you confirm that you have updated your OS, check if you’re using the latest version of iTunes as well, since there could be a bug in an old version causing the connectivity issues.
7. Use Android File Transfer Utility (Android + Mac)
Connecting your Android to Mac and transferring files to your computer is a little more difficult than the same process with Android & Windows. A special utility called Android File Transfer allows for a smooth connection between your Mac and Android smartphone.
You can find the Android File Transfer on the official Android website. Download and install the utility, then try plugging your phone into your Mac again. You should now be able to use your Android device on Mac.
8. Enable USB Debugging (Android)
If you’re still facing a problem with your computer not seeing your Android phone after trying different methods, you can try enabling USB debugging as your last resort.
The Android USB debugging mode is a part of the Developer Options menu. It’s an advanced feature designed for app developers to make sure their apps work correctly and diagnose problems when they appear. Make sure to study all pros and cons before activating it.
To enable USB debugging on your smartphone, follow the steps below.
- Open the Settings on your Android smartphone.
- Scroll down until you see About phone.
- Keep selecting Build number until the developer mode is activated.
- Go back to Settings and select Developer options.
- Select USB debugging.
The next time you connect your phone to your computer, you should be able to see it on the list of devices.
What If None of These Methods Work?
If you feel like you’ve tried everything, but your computer still doesn’t recognize your phone, consider hard resetting your phone back to its factory settings. It might fix whatever is causing the connectivity problem. However, it’ll also wipe all your data. Keep that in mind, and make sure to backup all of your important files and information before resetting your smartphone.
Have you ever come across similar issues? What helped you fix your computer not recognizing your phone? Share your experience fixing the connection between your phone and computer with us in the comments section below.
