Apple 允许您在所有设备上同步您的媒体、文件和文档。(sync your media)听起来很简单，但许多用户有时会在 iCloud 同步方面遇到困难。
如果您在 MacBook 上启动“便笺(Notes)”应用程序，但在 iPhone 或 iPad 上创建的便笺却无处可寻，则说明某处存在问题。在本文中，我们将向您展示当 iCloud Notes不同步时查明问题根源的七种方法以及如何修复它。
首先，请确认您的设备已连接到同一个Apple ID帐户。如果它们是，但 iCloud 笔记仍然不会在设备之间同步，请尝试以下故障排除解决方案。
1. 检查您的互联网连接
您需要有效的 Internet 连接才能在 iOS 和 macOS 设备之间同步您的笔记。例如，如果 iPhone 上的 Notes 没有同步到MacBook，请检查两台设备是否都可以访问互联网。
启动您首选的网络浏览器并访问一个网站，最好是Google。如果浏览器没有加载任何网页，则可能是您的互联网连接有问题(problem with your internet connection)。通过启用飞行模式并将其关闭，重新启动您的 Wi-Fi 路由器或刷新您的蜂窝数据连接。
此外，请确保您拥有有效的互联网计划或订阅。作为最后的手段，请联系您的互联网服务提供商(Internet Service Provider)( ISP ) 以检查您的互联网连接状态；ISP端可能会出现服务停机。
您要运行的最后一项与连接相关的检查是确保Notes应用程序有权使用您的 iPhone 的互联网。如果您关闭备忘录的(Notes)移动数据(Mobile Data)访问，iCloud 备忘录将不会同步到其他设备。
转至Settings > Mobile Data并确保已打开Notes 。
2.（重新）启用 iCloud 同步
如果您的互联网工作正常，但 iCloud 笔记仍未同步，请检查您是否已为两台设备上的笔记应用程序启用同步。(Notes)
为 iPhone 上的备忘录启用 iCloud 同步(Enable iCloud Sync for Notes on iPhone)
1. 前往设置(Settings)并点击您的Apple ID 帐户名称(Apple ID account name)。
2. 选择iCloud。
3. 在使用 iCloud 的应用(Apps Using iCloud)部分中，确保启用了Notes 。
如果该选项已启用，您可以将其关闭并在几秒钟后重新打开。
在 Mac 上为备忘录启用 iCloud 同步(Enable iCloud Sync for Notes on Mac)
1. 启动系统偏好设置(System Preferences)并打开Apple ID菜单。
2. 确保您授予Notes应用程序访问同步文件到您的 iCloud 帐户的权限。
如果您的Mac(Mac)上已经启用了与 iCloud 的备忘录同步，请取消选中该选项，等待几分钟并再次启用它。
3.禁用笔记的本地存储
iOS 有一个选项允许您在 iPhone 上本地存储笔记。如果您在 iPhone 或 iPad 上启用了此选项，则笔记将不会同步到您的 iCloud 帐户和其他 iCloud 设备。
要禁用此选项，请转到Settings > Notes并禁用“在我的 iPhone 上”帐户(“On My iPhone” Account)的选项。
4.重新启动您的设备
有时，简单的设备重启就可以发挥作用。因此，如果您在将 iCloud 笔记从 iPhone 同步到Mac(Mac)时仍然遇到问题，反之亦然，请尝试重启受影响的设备。
要重新启动 iPhone 或 iPad，请前往Settings > General > Shut Down ，然后向右移动幻灯片以关闭滑块。(slide to power off)等待(Wait)大约 30 秒并按住侧边按钮以重新启动您的设备。
如果 iPhone 笔记在重新打开时仍无法同步到您的Mac ，请重新启动您的(Mac)Mac 并重(Mac)试。单击菜单栏上的Apple 标志并选择(Apple logo)重新启动(Restart)。确保手动关闭程序，以免丢失任何未保存的数据。
5. 登出 Apple ID
这是解决Apple设备上许多与同步相关的问题的一种有效方法，例如iCloud 照片也不会在您的设备(iCloud Photos also won’t sync across your devices)和 iCloud Notes 之间同步的情况。退出(Sign)Apple ID并重试。执行相同操作以解决阻止您的 iCloud 笔记同步到其他设备的问题。
在 iPhone 和 iPad 上注销 Apple ID(Sign Out of Apple ID on iPhone and iPad)
转到设置(Settings)，单击您的帐户名称(account name)，然后点击页面底部的退出按钮。(Sign Out)
就这么容易。但是，我们应该提到，在您的 iPhone 或 iPad 上退出Apple ID会导致您（永久）丢失一些文件。例如，您下载的Apple Music将从您的设备中删除，即使您重新登录Apple ID也不会恢复这些内容。
因此，在您在 iPhone 上退出Apple ID之前，我们强烈建议您备份您的 iOS 数据(backup your iOS data)。使用电缆将您的 iPhone 连接到Mac ，并通过单击 iPhone 上的(Mac)信任来授予(Trust)Mac访问您的文件的权限。
启动Finder ，在左侧边栏中选择您的iPhone ，然后单击(iPhone)立即备份(Back Up Now)按钮继续。
在 Mac 上注销 Apple ID
转到System Preferences > Apple ID > Overview，然后单击注销(Sign Out)按钮。当您重新登录Apple ID帐户时，您的 iCloud 数据（包括笔记）将重新同步到您的设备。如果没有产生所需的结果，请继续执行下一个解决方案。
6. 更新您的设备
在您的设备上运行过时的 iOS 或 macOS 版本是 iCloud 笔记同步失败的另一个原因。将您的设备更新到各自操作系统的最新版本，并检查是否能解决问题。(Update your devices to the latest versions)
Update iOS On An iPhone/iPad
转到Settings > General > Software Update。如果您的设备有可用更新，您将在页面上找到下载和安装选项。(Download and Install)
更新 macOS(Update macOS)
转到System Preferences > Software Update，然后单击立即升级(Upgrade Now)按钮。
7. 检查 iCloud Notes 服务器状态
如果 iCloud备忘录(Notes)服务器出现中断，您可能无法使用 iCloud备忘录(Notes)或在 iCloud 设备上同步备忘录。如果您尝试了所有可能的解决方案，但问题仍然存在，您应该检查 iCloud Notes服务器的状态。
访问Apple System Status 页面并检查(Apple System Status page)iCloud Notes旁边的颜色。
绿色表示服务器可用，而黄色或红色表示 iCloud Notes 服务器停止服务。在服务器中断的情况下，您必须等到Apple解决问题。
同步您的笔记没有问题
iCloud 同步让您可以全天候访问 Apple 设备上的文件(access to your files on your Apple devices)。要享受此福利，您需要将设备关联到同一个Apple ID帐户。如果你的 iPhone 笔记没有同步到你的Mac或 iPad，至少上面的故障排除解决方案之一可以解决问题。让我们知道哪一个成功了。
How to Fix iCloud Notes Not Syncing
Apple allows you to sync your media, files, and documents across all your devices. As easy as that sounds, many users sometimes encounter difficulties with iCloud synchronization.
If you launch the Notes app on your MacBook and notes created on your iPhone or iPad are nowhere to be found, there’s a problem somewhere. In this article, we’ll show you seven ways to pinpoint the source of the problem when iCloud Notes are not syncing and how to fix it.
Before anything, confirm that your devices are connected to the same Apple ID account. If they are but iCloud notes still won’t sync across the devices, try the following troubleshooting solutions.
1. Check Your Internet Connection
You need an active internet connection to synchronize your Notes between your iOS and macOS devices. For instance, if Notes on your iPhone isn’t syncing to your MacBook, check that both devices have internet access.
Launch your preferred web browser and visit a website, preferably Google. If the browser doesn’t load any webpage, there’s probably a problem with your internet connection. Restart your Wi-Fi router or refresh your cellular data connection by enabling airplane mode and turning it back off.
Also, make sure you have an active internet plan or subscription. As a last resort, contact your Internet Service Provider (ISP) to check the status of your internet connection; there could be a service downtime on the ISP’s end.
One last connectivity-related check you want to run is ensuring that the Notes app has permission to use your iPhone’s internet. If you turn off Mobile Data access for Notes, iCloud notes will not sync to other devices.
Go to Settings > Mobile Data and make sure Notes is toggled on.
2. (Re)Enable iCloud Sync
If your internet is working fine but iCloud notes are still not syncing, check that you have enabled synchronization for the Notes app on both devices.
Enable iCloud Sync for Notes on iPhone
1. Go to Settings and click your Apple ID account name.
2. Select iCloud.
3. In the Apps Using iCloud section, make sure Notes is enabled.
If the option is already enabled, you can turn it off and turn it back on after a few seconds.
Enable iCloud Sync for Notes on Mac
1. Launch System Preferences and open the Apple ID menu.
2. Make sure you grant the Notes app access to sync files to your iCloud account.
If Notes synchronization to iCloud is already active on your Mac, uncheck the option, wait a few minutes and enable it again.
3. Disable Local Storage of Notes
iOS has an option that allows you to store notes locally on your iPhone. If you have this option enabled on your iPhone or iPad, notes will not sync to your iCloud account and other iCloud devices.
To disable this option, go to Settings > Notes and disable the option that reads “On My iPhone” Account.
4. Restart Your Devices
Sometimes, a simple device restart could work the magic. So if you still have a problem syncing iCloud notes from your iPhone to your Mac or vice versa, try power cycling the affected devices.
To restart your iPhone or iPad, go to Settings > General > Shut Down and move the slide to power off slider to the right. Wait for about 30 seconds and hold the side button to restart your device.
If iPhone notes still won’t sync to your Mac when it comes back on, restart your Mac and try again. Click the Apple logo on the menu bar and select Restart. Make sure you manually close your programs so you don’t lose any unsaved data.
5. Sign Out of Apple ID
This is one effective way to fix many synchronization-related problems on your Apple devices like situations when iCloud Photos also won’t sync across your devices and iCloud Notes. Sign out of Apple ID and try again. Do the same to resolve issues preventing your iCloud notes from syncing to other devices.
Sign Out of Apple ID on iPhone and iPad
Go to Settings, click on your account name and tap the Sign Out button at the bottom of the page.
It’s that easy. However, we should mention that signing out of Apple ID on your iPhone or iPad will cause you to (permanently) lose some files. For example, your Apple Music downloads will be erased from your device, and they will not be restored even after you sign back into your Apple ID.
So, before you sign out of Apple ID on your iPhone, we strongly recommend that you backup your iOS data. Plug your iPhone to a Mac using a cable and grant the Mac access to your files by clicking Trust on your iPhone.
Launch Finder, select your iPhone in the left sidebar and click the Back Up Now button to proceed.
Sign Out of Apple ID on Mac
Go to System Preferences > Apple ID > Overview and click the Sign Out button. When you sign back into your Apple ID account, your iCloud data (including notes) will be synced anew to your devices. Proceed to the next solution if that doesn’t yield the desired result.
6. Update Your Devices
Running an obsolete iOS or macOS version on your devices is another reason for iCloud notes synchronization failures. Update your devices to the latest versions of their respective operating systems and check if that fixes the issue.
Update iOS On An iPhone/iPad
Go to Settings > General > Software Update. You’ll find a Download and Install option on the page if an update is available for your device.
Update macOS
Go to System Preferences > Software Update and click the Upgrade Now button.
7. Check iCloud Notes Server Status
You may not be able to use iCloud Notes or sync notes across your iCloud device if the iCloud Notes server is experiencing an outage. If you’ve tried all possible solutions but the problem persists, you should check the status of the iCloud Notes server.
Visit the Apple System Status page and check the color next to iCloud Notes.
Green indicates that the server is available while a yellow or red color means the iCloud Notes server is out-of-service. In the case of a server outage, you’ll have to wait till Apple resolves the issue.
Sync Your Notes Without Issues
iCloud synchronization hands you round-the-clock access to your files on your Apple devices. To enjoy this benefit, you’ll need to have the devices linked to the same Apple ID account. If your iPhone notes aren’t syncing to your Mac or iPad, at least one of the troubleshooting solutions above will fix things up. Let us know which one did the trick.
