你在考虑卖掉你的旧 iPhone(selling your old iPhone)吗？你想切换网络吗？在执行上述任何操作之前，请了解如何判断您的 iPhone 是否已解锁。
解锁的手机可以与任何运营商一起使用，并且会为您带来更高的价格。如果它被锁定，您可能需要重新考虑您的计划或采取额外步骤来解锁它。例如，直接从Apple Store购买的 iPhone会解锁，而根据运营商计划从Sprint、AT&T 和Verizon等公司购买的手机可能会被锁定到他们的网络。
让我们看看不同的方法来检查你的 iPhone 是锁定还是解锁。
如何从设置中判断您的 iPhone 是否已解锁(How To Tell if Your iPhone Is Unlocked or Not From the Settings)
使用设置(Settings)应用程序是最简单的方法。您无需费力就能知道您的 iPhone 是锁定还是解锁。
- 前往“设置”(Settings) > “通用(General)” > “关于(About)” 。它将带您到找到 IMEI 号码的同一页面。
- 向下滚动(Scroll)到底部并查找Carrier Lock选项。它应该在IMEI上方两行。
如果运营商锁定(Carrier Lock)信息显示“无 SIM 限制(No SIM Restrictions)”，则您的 iPhone 未锁定到您的网络。否则，它应该说SIM Locked。在这种情况下，您需要与您的运营商讨论如何解锁。
这种方法是迄今为止最简单的，但有一个问题。一些 iPhone 用户报告说他们的设置中不包含此选项。如果您是其中之一，您应该尝试下面讨论的任何其他方法。
如何判断您的 iPhone 是否已从运营商处解锁(How To Tell if Your iPhone Is Unlocked or Not From Your Carrier)
如果您想确定，请尝试致电您的网络提供商。他们应该能够告诉您您的 iPhone 是否已解锁。
但是，在联系他们之前，请准备好手机的国际移动设备标识(International Mobile Equipment Identity)或IMEI。
什么是 IMEI？(What Is IMEI?)
IMEI是一个 15 位数字，对于每部 iPhone 或任何智能手机都是唯一的。
网络提供商使用它将手机与网络匹配并跟踪被盗或丢失的设备。
如何查找手机的 IMEI(How To Find Your Phone’s IMEI)
联系网络提供商后，他们很可能会先询问您手机的IMEI，然后再向您提供所需的信息。
要查找此号码：
- 前往“设置”(Settings) > “通用(General)” > “关于(About)” 。它应该带你到一个看起来像这样的页面：
- 向下滚动(Scroll)到页面底部以获取手机的IMEI。
获得此号码后，您可以尝试联系您的网络。但是，可能很难联系到您的运营商，或者他们可能需要一些时间才能回复您。
此外，如果您购买的是二手 iPhone，您的运营商可能不会通过电话向您提供此信息。
尝试其他运营商的 SIM 卡(Try a SIM Card From Another Carrier)
对于这种方法，您必须移除您的用户识别模块(Subscriber Identification Module)或SIM 卡(SIM card)，然后尝试使用其他运营商提供的。如果您销售的是旧 iPhone(selling an old iPhone)，您可以向朋友借一个或试用买家的SIM卡。
要取出 iPhone 的SIM卡，您必须关闭手机并取下手机壳。您还需要手机随附 的SIM 卡弹出器。(SIM)
- 按住任一音量按钮和手机另一侧的按钮，直到屏幕上出现关机滑块。
- 向右滑动滑块。
3. 关闭 iPhone 并取下保护盖后，找到SIM卡托盘。它应该在左侧或右侧，具体取决于您的 iPhone 是什么型号。
SIM托盘看起来像一个非常窄的椭圆形，与侧面齐平。您还会在SIM(SIM)弹出器 所在的椭圆形一端找到一个小孔。
4. 将SIM注射器插入小孔并推动它直到SIM托盘弹出。
5. 露出后，拉出托盘并更换SIM 卡(SIM card)。
6. 将托盘重新插入手机，然后按侧边按钮将其打开，直到出现Apple标志。
如果您的 iPhone 可以读取SIM卡，您应该会在屏幕右上角看到信号条。否则(Otherwise)，将出现“未(“)安装 SIM 卡(No SIM Card Installed)(No SIM Card Installed)”或“未配置(SIM Not Provisioned)(SIM Not Provisioned)SIM 卡”(”)错误。
您也可以前往Settings > General > About，这会再次将您带到IMEI页面。
向下滚动到网络(Network)或运营商(Carrier)选项。它应该显示SIM卡的运营商或网络。
如何使用在线 IMEI 检查器判断您的 iPhone 是否已解锁(How To Tell If Your iPhone Is Unlocked or Not With an Online IMEI Checker)
如果您没有时间联系运营商代表或没有耐心取出 iPhone 的SIM卡，您可以使用在线IMEI检查器。
由于我们已经讨论了如何找到它，所以这应该不是问题。
接下来，只需谷歌“ iPhone IMEI 检查器(iPhone IMEI checker)”，您将看到几个可供选择的选项。其中许多网站提供 iPhone 运营商检查和SIMlock状态检查等服务。使用最安全的网站之一是IMEI.info。
如果您购买的是二手 iPhone，您还可以使用 iPhone 黑名单检查，它会告诉您手机是否被报告丢失或被盗(phone is reported lost or stolen)。它甚至会告诉您电话是否与未付账单相关联。IMEI.info上的锁定状态检查费用为 3美元。
另一个检查黑名单状态或手机是否仍处于分期付款计划（因此被锁定）的好网站是IMEIPro.info。他们有几种不同的IMEI检查，可以为您提供更详细的信息（iPhone、ATT等）。
但是，请注意，其中许多网站都会向您收取服务费用。不过，如果您不介意咳出少量以换取方便，您应该考虑这个选项。
选择适合您的方法(Choose the Method That Works for You)
选择最方便的方法。请记住(Remember)，当您转售未锁定的手机时，它们可能会更值钱。因此，当您根据合同从运营商处购买 iPhone 时，了解这些方法是值得的。
How To Tell If Your iPhone Is Unlocked or Not
Are you thinking about selling your old iPhone? Do you want to switch networks? Before doing any of these, learn how to tell if your iPhone is unlocked or not.
An unlocked phone can be used with any carrier and will fetch you a higher price. If it’s locked, you might have to reconsider your plans or take extra steps to unlock it. For example, iPhones bought directly from the Apple Store come unlocked, while a phone bought under a carrier plan from companies like Sprint, AT&T, and Verizon could be locked to their network.
Let’s check out the different methods to check if your iPhone is locked or unlocked.
How To Tell if Your iPhone Is Unlocked or Not From the Settings
Using the Settings app is the simplest method. You won’t have to jump through hoops to know if your iPhone is locked or unlocked.
- Go to Settings > General > About. It will take you to the same page where you found your IMEI number.
- Scroll down to the bottom and look for the Carrier Lock option. It should be two rows above the IMEI.
If the Carrier Lock information says “No SIM Restrictions,” then your iPhone is not locked to your network. Otherwise, it should say SIM Locked. In this case, you’ll need to talk to your carrier about how to have it unlocked.
This method is by far the simplest, but there is a catch. Some iPhone users report that this option is not included in their settings. If you are one of them, you should try any of the other methods discussed below.
How To Tell if Your iPhone Is Unlocked or Not From Your Carrier
If you want to know for sure, try calling your network provider. They should be able to tell you if your iPhone is unlocked or not.
However, before you contact them, have your phone’s International Mobile Equipment Identity or IMEI ready.
What Is IMEI?
IMEI is a 15-digit number that is unique to each iPhone or any smartphone.
Network providers use it to match the phone to the network and keep track of stolen or lost devices.
How To Find Your Phone’s IMEI
Once you contact your network provider, they will most likely ask you for your phone’s IMEI first before giving you the information you need.
To find this number:
- Go to Settings > General > About. It should take you to a page that looks like this:
- Scroll down to the bottom of the page to get your phone’s IMEI.
Once you have this number, you can try contacting your network. However, it might be hard to get a hold of your carrier, or it may take some time before they can get back to you.
Also, your carrier might not give you this information over the phone if you bought your iPhone second-hand.
Try a SIM Card From Another Carrier
For this method, you’ll have to remove your Subscriber Identification Module or SIM card and try one from a different carrier. You can borrow one from a friend or try the buyer’s SIM card if you are selling an old iPhone.
To remove your iPhone’s SIM card, you must turn your phone off and remove its case. You also need the SIM ejector that comes with the phone.
- Press and hold either of the volume buttons and the button on the other side of the phone until the power off slider appears on the screen.
- Swipe the slider to the right.
3. Once your iPhone is off and the cover is removed, locate the SIM card tray. It should be on the left or right side, depending on what model your iPhone is.
The SIM tray looks like a very narrow oval that sits flush against the side’s surface. You will also find a tiny hole on one end of the oval where the SIM ejector goes.
4. Insert the SIM injector into the tiny hole and push it until the SIM tray pops out.
5. Once it is exposed, pull out the tray and replace your SIM card.
6. Insert the tray back into your phone, then turn it on by pressing the side button until the Apple logo appears.
If your iPhone can read the SIM card, you should see signal bars in the upper right corner of your screen. Otherwise, a “No SIM Card Installed” or “SIM Not Provisioned” error will appear.
You could also go to Settings > General > About, which again takes you to the IMEI page.
Scroll down to the Network or the Carrier option. It should show the SIM card’s carrier or network.
How To Tell If Your iPhone Is Unlocked or Not With an Online IMEI Checker
If you do not have the time to contact a carrier representative or the patience to remove your iPhone’s SIM card, you can use an online IMEI checker instead.
Since we have already discussed how you can find it, this should not be a problem.
Next, just Google “iPhone IMEI checker,” and you will see several options to choose from. Many of these websites offer services like iPhone carrier checking and SIMlock status checking. One of the safest sites to use is IMEI.info.
If you are buying a second-hand iPhone, you can also use the iPhone blacklist checking, which will tell you if the phone is reported lost or stolen. It will even tell you if the phone is linked to unpaid bills. The lock status check costs $3 on IMEI.info.
Another good site to check the blacklist status or whether the phone is still under an installment plan (and therefore locked) is IMEIPro.info. They have several different IMEI checks that give you more detailed info (iPhone, ATT, etc.).
However, take note that many of these websites will charge you for their services. Still, if you don’t mind coughing up a small amount in exchange for convenience, you should consider this option.
Choose the Method That Works for You
Choose the most convenient method. Remember, unlocked phones could be worth more when you resell them. So, it’s worthwhile to know about these methods when you buy an iPhone from a carrier under a contract.
