几乎每年春天， Apple都会发布新版 iPhone，这意味着每个人都该决定是否有足够的钱购买最新款了。如果您多年来一直使用Apple，那么您可能已经将您的手机升级了至少 2 或 3 次，即使有这两年的合同。
当您获得一部新 iPhone 时，显而易见的任务是将所有数据从旧手机传输到新手机。为此，您必须备份一部手机并在第二部手机上恢复备份。您可以在 iOS 中通过以下两种方式之一执行此操作：本地备份或通过 iCloud。
在本文中，我将向您展示如何使用本地备份方法(backup method)和通过 iCloud 在两部 iPhone 之间切换。不过，在我们开始之前，我应该提一下沿途可能出现的一些警告和陷阱。
iOS 版本要求
大多数情况下，您将从运行旧版本或与新手机相同版本的 iOS 的旧 iPhone 恢复备份，这绝对不会造成任何问题。执行还原时，设备上的 iOS 版本必须与备份中的版本相同或更新。
例如，如果您有运行iOS 8的(iOS 8)iPhone 5S，并且您正在将该备份恢复到运行iOS 9的(iOS 9)iPhone 6S，那么一切都会正常工作。但是，如果您将iPhone 5S更新到 iOS 9.2.1，创建备份，然后尝试在运行 iOS 9.1 的iPhone 6S上恢复它，它将无法正常工作！
不过，修复相对容易。在这种情况下，只需将手机更新到高于备份版本的版本，就可以了。
转移密码
至少对我而言，第二个主要问题是将我所有的密码转移到我的新设备上。传输所有应用程序、照片、消息等非常容易，但必须重新输入所有应用程序密码、Wi-Fi 密码和网站密码真的很痛苦。
您可以通过两种方式将密码传输到另一部 iPhone：加密本地备份或打开 iCloud KeyChain。正如我在下面提到的两种方法一样，我将指出如何激活这两个功能，这将在还原后为您节省大量繁琐的输入。
本地 iTunes 备份
使用 iTunes，您只需单击几下即可快速创建 iPhone 的完整备份。有关详细信息，请阅读我之前关于备份Apple 设备(Apple device)的帖子。要开始使用，请打开 iTunes，然后将手机连接到计算机。
在顶部，您应该会看到一个小的iPhone 图标(iPhone icon)出现。单击(Click)它，它将为您的设备加载“摘要(Summary)”页面。在备份(Backups)下，您将看到手机的当前默认备份选项(default backup option)。
就我而言，iCloud 是我的手机自动备份的地方。我强烈建议同时使用 iCloud 和本地备份作为额外的安全网(safety net)。首先(First)，选中 加密 iPhone 备份(Encrypt iPhone backup)框并选择用于保护备份的密码。确保(Make)您安全地保存密码，因为您需要它来恢复备份。
现在只需单击“立即(Back Up Now)备份”按钮即可开始备份。如果您在弹出的 iTunes 资料库中看到有关购买的消息，请继续并单击Transfer Purchases。此外，您可能会收到一条消息，说明您需要授权您的计算机才能传输某些内容。每个 iTunes 帐户最多可以授权五台电脑。
备份完成后，您可以断开手机并连接另一部手机。在恢复备份之前，您必须在将恢复备份的手机上禁用“查找我的 iPhone(Find My iPhone) ”。为此，请前往“设置”(Settings)，点击“ iCloud ” ，点击“查找我的 iPhone(Find My iPhone) ” ，然后将其关闭。
现在单击立即备份右侧的恢复备份( Restore Backup)按钮(Back Up)，然后选择刚刚创建的备份。请注意，如果列表中缺少您刚刚创建的备份，则表示 iOS 版本存在问题，我在上面提到过。
单击恢复(Restore)按钮，系统会要求您输入密码，因为备份已加密。此时您可能遇到的唯一问题是第二部手机上没有足够的空间来恢复备份。例如，如果您备份 64GB iPhone 并尝试将其恢复到 32GB iPhone，如果备份大小(backup size)大于手机存储容量(phone storage capacity)，您可能会遇到问题。
在这些类型的情况下，您要么必须通过删除手机上的内容和数据(content and data)来减少备份的大小，要么必须确保另一部手机具有相同或更大的容量。
iCloud 备份
如果您更喜欢使用云来备份您的设备，那么 iCloud 总体上运行得非常好。以我的经验，它比从 iTunes 备份恢复需要更长的时间，因为所有内容都必须通过Internet 连接(Internet connection)下载。
iCloud 备份是自动完成的，因此只要启用它，您就应该已经有了备份。如果您不确定，请点击Settings，然后点击iCloud并确保Backup设置为On。显然，手机应该已经使用您的Apple ID(Apple ID)登录 iCloud 。
要在 iCloud 中手动创建备份，只需轻点“立即备份”(Back Up Now)。它还会告诉您上次备份的时间。
为了恢复iCloud 备份(iCloud backup)，您必须完全擦除您的 iPhone。我不是这种方法的忠实拥护者，但这是目前唯一可行的方法。因此，在您要恢复的手机上，点击设置(Settings)、常规(General)、重置(Reset)，然后删除所有内容和设置( Erase All Content and Settings)。
然后，您需要 在实际开始擦除手机之前点击两次擦除 iPhone 。(Erase iPhone)同样(Again)，需要先关闭“查找我的 iPhone” 。(Find My iPhone)一旦手机被擦除，它将以Hello屏幕启动。滑动(Swipe)然后选择您的语言和国家(language and country)。
接下来，连接到WiFi 网络(WiFi network)，然后启用或禁用定位服务。跳过(Skip)Touch ID(Touch ID)和密码选项，您最终会看到一个屏幕，您可以在其中选择如何恢复数据。您可以从 iCloud备份(Backup)、iTunes备份(Backup)、设置(Setup)为新 iPhone 或(New iPhone or Move Data)从Android移动数据中进行选择。
在我们的例子中，您将选择 iCloud 备份，然后输入您的Apple ID 和密码(Apple ID and password)。当您这样做时，如果您在您的帐户上启用了两因素验证，您可能必须验证您的身份。此时，您应该从所有设备中获取最近的 iCloud 备份列表。
您将能够看到备份的日期和时间(date and time)、设备以及与该设备关联的名称。如果备份显示为灰色，则表示如果无法恢复到设备，可能是由于 iOS 版本问题。
如前所述，完成iCloud 恢复(iCloud restore)可能需要相当长的时间。即使在 iPhone 加载后，您也会注意到它会下载您的所有媒体和应用程序。使用 iCloud 恢复手机可能需要几个小时。
确保(Make)在恢复备份之前启用iCloud KeyChain，以便在新手机上登录 iCloud 后同步所有数据。为此，点击Settings，然后iCloud，然后KeyChain并启用它。
因此，这些都是将 iPhone 备份和恢复到另一台设备的所有程序。在我看来，除了本地 PC 之外，支付一些额外的 iCloud 存储空间并将备份存储在那里是一个好主意。Apple拥有出色的硬件，但他们的软件有很多错误，我遇到过备份随机丢失或恢复失败等问题。如果您有任何问题，请随时发表评论。享受！
How to Switch or Transfer Data to a New iPhone
Pretty much eνery spring Apple releases a new vеrsion of the iPhone and that means it’ѕ time for everyone to decide if they can spare enough money for the latest model. If you have stuck with Apple over the уears, you’ve probably upgraded yoυr phone at least 2 or 3 times, even with those two year cоntracts.
When you get a new iPhone, the obvious task is to transfer all your data from your old phone to your new phone. In order to do this, you have to backup one phone and restore the backup on the second phone. You can do this in one of two ways in iOS: local backups or via iCloud.
In this article, I’ll show you how you can switch between two iPhones using the local backup method and via iCloud. Before we get started, though, I should mention some of the caveats and pitfalls that can occur along the way.
iOS Version Requirements
Most of the time, you’ll be restoring a backup from an older iPhone running an older version or the same version of iOS as your new phone and this will cause absolutely no problems. When you perform a restore, the version of iOS on the device has to be the same or newer than the version in the backup.
For example, if you have an iPhone 5S running iOS 8 and you are restoring that backup to an iPhone 6S running iOS 9, everything will work fine. However, if you updated your iPhone 5S to iOS 9.2.1, created a backup and then tried to restore it on your iPhone 6S running iOS 9.1, it won’t work!
The fix is relatively easy, though. In cases like that, just update your phone to a version that is higher than the version in the backup and you’ll be fine.
Transferring Passwords
The second major issue, at least for me, is getting all my passwords transferred over to my new device. It’s pretty easy to get all your apps, photos, messages, etc. transferred, but it’s a real pain to have to re-enter all your app passwords, Wi-Fi passwords, and website passwords.
There are two ways you can transfer your passwords to another iPhone: by encrypting the local backup or by turning on iCloud KeyChain. As I mention both methods below, I’ll point out how to activate these two features, which will save you a lot of tedious typing after a restore.
Local iTunes Backup
With iTunes, you can quickly create a full backup of your iPhone with a few clicks. For full details, read my previous post on backing up an Apple device. To get started, open iTunes and then connect your phone to your computer.
At the top, you should see a small iPhone icon appear. Click on that and it will load up the Summary page for your device. Under Backups, you’ll see what the current default backup option is for your phone.
In my case, iCloud is where my phone gets backed up to automatically. I highly recommend using both iCloud and local backups as an extra safety net. First, check the Encrypt iPhone backup box and choose a password to secure the backup with. Make sure you keep the password safely because you’ll need it in order to restore the backup.
Now simply click on the Back Up Now button to start the backup. If you see a message about purchases that are not in your iTunes library popup, go ahead and click on Transfer Purchases. In addition, you may get a message stating that you need to authorize your computer in order to transfer some content. You can authorize up to five computers per iTunes account.
Once the backup is complete, you can disconnect your phone and connect the other one. Before you can restore a backup, you have to disable Find My iPhone on the phone where the backup will be restored. To do this, go to Settings, tap iCloud, tap Find My iPhone and then turn it off.
Now click on the Restore Backup button that is to the right of Back Up Now and choose the backup your just created. Note that if the backup you just created is missing from the list, it means there is some issue with the iOS version, which I mentioned above.
Click the Restore button and you’ll be asked to enter your password since the backup was encrypted. The only problem you can run into at this point is not having enough space on the second phone to restore the backup. For example, if you backed up a 64GB iPhone and try to restore it to a 32GB iPhone, you might run into an issue if the backup size is larger than the phone storage capacity.
In those types of cases, you either have to reduce the size of the backup by deleting content and data off the phone or you have to make sure the other phone has the same or a larger capacity.
iCloud Backup
If you prefer to use the cloud for your device backups, then iCloud works really well overall. In my experience, it just takes a lot longer than restoring from an iTunes backup because everything has to be downloaded over your Internet connection.
iCloud backups are done automatically, so as long as it’s enabled, you should already have a backup. If you’re not sure, tap on Settings, then iCloud and make sure Backup is set to On. Obviously, the phone should already be logged into iCloud with your Apple ID.
To manually create a backup in iCloud, just tap Back Up Now. It will also tell you the time of your last backup.
In order to restore an iCloud backup, you have to completely erase your iPhone. I’m not a huge fan of this method, but that’s the only way it works right now. So on the phone you want to restore the back to, tap on Settings, General, Reset and then Erase All Content and Settings.
You’ll then need to tap Erase iPhone twice before it actually starts erasing the phone. Again, Find My iPhone will need to be turned off first. Once the phone has been erased, it will start up with the Hello screen. Swipe and then choose your language and country.
Next, connect to a WiFi network and then enable or disable location services. Skip past Touch ID and the passcode options and you’ll finally get a screen where you can choose how to restore your data. You can pick from iCloud Backup, iTunes Backup, Setup as New iPhone or Move Data from Android.
In our case, you will choose iCloud backup and then enter your Apple ID and password. When you do that, you may have to verify your identity if you enabled two-factor verification on your account. At this point, you should get a list of the recent iCloud backups from all your devices.
You’ll be able to see the date and time of the backup, the device and the name associated with that device. If a backup is greyed out, that means if cannot be restored to the device, probably due to iOS version issues.
As mentioned, it could take quite a bit of time for your iCloud restore to complete. Even after the iPhone loads, you’ll notice that it then downloads all your media and apps. It can easily take several hours for a phone to be restored using iCloud.
Make sure iCloud KeyChain is enabled before you restore your backup so that all that data will be synced once you log into iCloud on the new phone. To do that, tap on Settings, then iCloud, then KeyChain and enable it.
So those are all the procedures for backing up and restoring an iPhone to another device. In my opinion, it’s a good idea to pay for some extra iCloud storage and store your backups there in addition to locally on your PC. Apple has great hardware, but their software has quite a few bugs and I’ve run into issues with backups randomly missing or restores failing, etc. If you have any questions, feel free to comment. Enjoy!
