将您的 iPhone 或 iPad 恢复出厂设置涉及擦除所有个人数据并将每个与系统相关的设置恢复为默认设置。从本质上讲，您最终会将系统软件恢复为开箱即用的 iOS 或 iPadOS 设备的软件。
重置过程本身非常简单。您可以单独使用 iPhone 或 iPad 或在Mac或 PC 的帮助下启动和完成它。但根据您想要重置 iPhone 或 iPad 的原因和方式，您可能需要通过备份数据、禁用激活锁(Activation Lock)和注销 iMessage 来为重置做准备。
为什么你应该恢复出厂设置(Factory Reset)iPhone 或 iPad
虽然您可以随时将您的 iPhone 或 iPad 恢复出厂设置，但除非您遇到以下两种情况中的一种或两种，否则您没有理由这样做。
修复与软件相关的问题(Fix Software-Related Issues)
假设您的 iPhone 或 iPad 上的系统软件出现故障，或者您在使用特定应用程序、特性或功能时遇到问题。如果您已经通过任何适用的修复程序进行了工作，那么将设备恢复为出厂默认设置可以很好地作为解决问题的最后努力。
卖你的 iPhone 或 iPad(Sell Your iPhone or iPad)
如果您打算出售 iPhone 或 iPad(selling your iPhone or iPad)，恢复出厂设置有助于抹掉您的所有文档、照片和应用程序。这不仅保护了您的隐私，而且买家还收到了一个带有系统软件干净副本的设备，他或她可以登录并立即开始使用。
如何将 iPhone 备份到 iCloud 或 Finder/iTunes
在您将 iPhone 或 iPad 恢复出厂设置之前，您必须将设备备份到 iCloud 或Mac或 PC，或两者兼而有之。这就是为什么。
如果您要重置 iPhone 以解决特定问题，备份可让您取回在此过程中丢失的数据。或者，如果您打算出售您的设备，您可以稍后使用备份设置新的 iOS 或 iPadOS 设备，并从之前中断的地方继续。
如何备份到 iCloud(How to Back Up to iCloud)
如果您在 iCloud 中有足够的免费存储空间，您可以为您的 iPhone 或 iPad 创建一个基于云的备份，其中包含您最重要的数据。但是，它不会包含已同步到 iCloud 的数据（例如您的照片、联系人、便笺等）。
1.在您的 iPhone 或 iPad 上打开设置应用程序。(Settings)
2. 点击您的 Apple ID。
3. 选择标有iCloud的选项。
4. 向下滚动并选择iCloud 备份(iCloud Backup)。
5. 点击立即备份(Back Up Now)。
注意：(Note:)您必须将 iPhone 或 iPad 连接到 Wi-Fi 网络才能备份到 iCloud。
How to Back Up to iTunes/Finder
您可以将 iPhone 或 iPad 创建到 PC 或Mac的完整备份。如果您有装有 macOS Mojave或更早版本的(Mojave)Mac或使用 PC，则必须使用 iTunes。如果您使用装有 macOS Catalina或更高版本的(Catalina)Mac，则必须使用Finder。与(Compared)iCloud 相比，iTunes/ Finder备份执行速度更快，恢复速度也更快。
注意：您可以通过(Note:)Microsoft Store或Apple 网站(Apple website)下载和安装 PC 版 iTunes 。
1. 在您的Mac(Mac)或 PC上打开 iTunes/Finder并通过USB连接您的 iPhone 或 iPad 。如果您以前从未将设备连接到计算机，请点按信任(Trust)。
2. 从 iTunes 窗口的右上角或Finder的边栏中选择您的 iOS 或 iPadOS 设备。
3. 激活将iPhone 上的所有数据备份到此 Mac(Back up all of the data on your iPhone to this Mac)旁边的单选按钮，然后选择立即备份(Back Up Now)。
4. 选择加密备份(Encrypt Backups)以使用密码保护您的备份，或选择不加密(Don’t Encrypt )以执行定期备份。
5.等到(Wait)iTunes 或Finder完成创建备份。
如何关闭查找我的 iPhone/iPad
除了备份之外，如果您打算使用 PC 或Mac将设备恢复为出厂设置，则必须关闭“查找”功能。(turn off the Find My functionality)这样可以防止其他人在未经您许可的情况下执行重置。
如果您打算出售设备，则无论您首选的出厂重置方法如何，您还必须关闭该功能。如果没有，您的 iPhone 会使用一种称为激活锁(Activation Lock)的功能来阻止其他人登录设备。
1. 打开 iPhone 上的设置(Settings)应用程序。
2. 点击您的 Apple ID。
3. 点击查找我的(Find My)。
4. 点击查找我的 iPhone( Find My iPhone)或查找我的 iPad(Find My iPad)。
5. 关闭Find My iPhone或Find My iPad旁边的开关。
6. 输入您的Apple ID密码，然后点击关闭(Turn Off)。
如何注销(Deregister)iMessage（仅限 iPhone）
如果您要出售 iPhone 并切换到Android设备，则必须取消注册 iMessage。否则，您可能无法接收来自 iOS 联系人的短信。
1. 打开 iPhone 上的设置(Settings )应用程序。
2. 向下滚动并点击消息(Messages)。
3.关闭iMessage旁边的开关。
如何将 iPhone 重置为出厂设置(Factory Settings)
现在您已经完成了 iPhone 或 iPad 的备份（并禁用了“查找我的”(Find My)和/或取消注册的 iMessage），您可以使用设备本身或将其连接到Mac或 PC 来执行恢复出厂设置。
在 iOS 和 iPadOS 中使用内置的出厂重置选项是最方便的，但如果您与设备交互时遇到问题，则必须使用电脑。假设问题严重到您无法禁用Find My。在这种情况下，除非您强制重启 iPhone 并进入恢复模式，(force-restart your iPhone and enter Recovery Mode)否则您将无法恢复出厂设置。
如何使用 iPhone 和 iPad 恢复出厂设置(How to Factory Reset Using iPhone and iPad)
1. 打开 iPhone 上的设置(Settings)应用程序。
2. 选择常规(General)。
3. 选择重置(Reset)。
4. 点击删除所有内容和设置(Erase All Content and Settings)。
5. 点击立即擦除(Erase Now)。
重要提示：(Important:)如果您之前没有对 iPhone 或 iPad 执行备份，请轻点“备份然后抹掉”。(Backup Then Erase)
6. 输入您的设备密码。
7. 点击抹掉 iPhone(Erase iPhone )进行确认。
如何使用 iTunes 或 Finder 恢复出厂设置(How to Factory Reset Using iTunes or Finder)
1.在您的Mac或 PC上打开 iTunes 或Finder 。然后，通过USB(USB)连接您的 iPhone 或 iPad 。
2. 在 iTunes 或Finder(Finder)中选择您的 iOS 或 iPadOS 设备。
3. 选择恢复 iPhone(Restore iPhone)或恢复 iPad(Restore iPad)。
注意：(Note:)除非您在 iPhone 或 iPad 上禁用“查找”(Find My) ，否则您无法继续执行此步骤。
4. 如果您已经备份了您的设备，请选择不备份(Don’t Back Up)。如果没有，请选择备份(Back Up)。
5. 选择恢复(Restore)。
警告：(Warning:)在恢复出厂设置过程中，请勿断开设备与计算机的连接。
恢复出厂设置完成(Reset Complete)：恢复备份(Restore Backup)或关机(Shut)
重置过程后，您的 iPhone 或 iPad 将加载设置助手(Setup Assistant)。如果需要，您可以选择从 iCloud 或 iTunes/Finder 备份中恢复数据。
进入“应用程序(Apps)和数据(Data)”屏幕后，选择从 iCloud 备份(Restore from iCloud Backup)恢复或从 Mac 或 PC 恢复，(Restore from Mac or PC,)具体取决于您要将数据恢复到 iPhone 或 iPad 的方式。如果您要出售该设备，只需将其关闭即可。
How to Factory Reset an iPhone and iPad
Factory resettіng your iPhone or iPad involves wiping every bit of personal data аnd reverting each system-related setting to its default. Essentially, you end up with the system software rеverting to that of an iOS or iPadOS deνice fresh out of the box.
The reset procedure itself is entirely straightforward. You can initiate and complete it using just the iPhone or iPad alone or with the help of a Mac or PC. But depending on why and how you want to reset your iphone or iPad, you may have to prepare for the reset by backing up your data, disabling Activation Lock, and deregistering iMessage.
Why You Should Factory Reset an iPhone or iPad
While you can factory reset your iPhone or iPad whenever you want, you have no reason to do that unless you encounter one or both of the two situations below.
Fix Software-Related Issues
Suppose the system software on your iPhone or iPad malfunctions, or you have trouble using a specific app, feature, or functionality. Provided that you’ve already worked your way through any applicable fixes, reverting the device to factory defaults could very well work as a last-ditch effort to resolve the issue.
Sell Your iPhone or iPad
If you plan on selling your iPhone or iPad, a factory reset helps erase all of your documents, photos, and apps. Not only does this protect your privacy, but the buyer also receives a device with a clean copy of the system software that he or she can sign into and start using right away.
How to Back Up iPhone to iCloud or Finder/iTunes
Before you perform a factory reset of your iPhone or iPad, you must back up the device to either iCloud or a Mac or PC, or both. Here’s why.
If you’re about to reset your iPhone to fix a specific issue, a backup allows you to get back the data you lose during the procedure. Or, if you intend to sell your device, you can use the backup to set up a new iOS or iPadOS device later on and pick up where you left off previously.
How to Back Up to iCloud
Provided that you have enough free storage in iCloud, you can create a cloud-based backup of your iPhone or iPad containing your most important data. However, it will not include data that already syncs to iCloud (such as your photos, contacts, notes, etc.).
1. Open the Settings app on your iPhone or iPad.
2. Tap your Apple ID.
3. Select the option labeled iCloud.
4. Scroll down and select iCloud Backup.
5. Tap Back Up Now.
Note: You must connect your iPhone or iPad to a Wi-Fi network to back up to iCloud.
How to Back Up to iTunes/Finder
You can create a complete backup of your iPhone or iPad to a PC or Mac. If you have a Mac with macOS Mojave or earlier or use a PC, you must use iTunes. If you use a Mac with macOS Catalina or later, you must use Finder. Compared to iCloud, an iTunes/Finder backup is faster to perform and quicker to restore.
Note: You can download and install iTunes for PC via the Microsoft Store or the Apple website.
1. Open iTunes/Finder on your Mac or PC and connect your iPhone or iPad via USB. If you’ve never connected the device to your computer before, tap Trust.
2. Select your iOS or iPadOS device from the top-right corner of the iTunes window or the sidebar in Finder.
3. Activate the radio button next to Back up all of the data on your iPhone to this Mac and select Back Up Now.
4. Select Encrypt Backups to password-protect your backup, or Don’t Encrypt to perform a regular backup.
5. Wait until iTunes or Finder finishes creating the backup.
How to Turn Off Find My iPhone/iPad
Backups aside, you must turn off the Find My functionality if you plan on using a PC or Mac to restore the device to factory settings. That prevents others from performing a reset without your permission.
You must also turn the feature off regardless of your preferred factory reset method if you intend to sell the device. If not, your iPhone uses a feature called Activation Lock that prevents anyone else from signing into the device.
1. Open the Settings app on your iPhone.
2. Tap your Apple ID.
3. Tap Find My.
4. Tap Find My iPhone or Find My iPad.
5. Turn off the switch next to Find My iPhone or Find My iPad.
6. Enter your Apple ID password, and tap Turn Off.
How to Deregister iMessage (iPhone Only)
If you’re about to sell your iPhone and switch to an Android device, you must deregister iMessage. If not, you may have trouble receiving text messages from your iOS contacts.
1. Open the Settings app on your iPhone.
2. Scroll down and tap Messages.
3. Turn off the switch next to iMessage.
How to Reset iPhone to Factory Settings
Now that you’ve finished backing up your iPhone or iPad (and disabled Find My and/or deregistered iMessage), you can perform a factory reset using the device itself or by connecting it to a Mac or PC.
Using the built-in factory reset option in iOS and iPadOS is the most convenient, but you must use your computer if you have trouble interacting with the device. Suppose the issue is serious enough that you couldn’t disable Find My. In that case, you won’t be able to perform the factory reset unless you force-restart your iPhone and enter Recovery Mode.
How to Factory Reset Using iPhone and iPad
1. Open the Settings app on your iPhone.
2. Select General.
3. Select Reset.
4. Tap Erase All Content and Settings.
5. Tap Erase Now.
Important: Tap Backup Then Erase if you didn’t perform a backup of your iPhone or iPad earlier.
6. Enter your device passcode.
7. Tap Erase iPhone to confirm.
How to Factory Reset Using iTunes or Finder
1. Open iTunes or Finder on your Mac or PC. Then, connect your iPhone or iPad via USB.
2. Select your iOS or iPadOS device in iTunes or Finder.
3. Select Restore iPhone or Restore iPad.
Note: You can’t proceed beyond this step unless you disable Find My on your iPhone or iPad.
4. If you’ve already backed up your device, select Don’t Back Up. If not, select Back Up.
5. Select Restore.
Warning: Do not disconnect the device from your computer during the factory reset procedure.
Factory Reset Complete: Restore Backup or Shut Down
After the reset procedure, your iPhone or iPad will load the Setup Assistant. You can choose to restore your data from an iCloud or iTunes/Finder backup should you want.
Once you get to the Apps & Data screen, select Restore from iCloud Backup or Restore from Mac or PC, depending on how you want to restore the data to your iPhone or iPad. If you’re going to sell the device, simply switch it off.
