手机esn不可用怎么解决

If you’re in the market for a cellphone, especially a used one, you’ll hear a lot of talk about ESNs with an emphasis on whether or not the phone is “clean”. What exactly does acronym stand for and what does it mean if the phone is clean or not?

如果您在手机市场上，尤其是二手手机市场，您会听到很多关于ESN的话题，重点是手机是否“干净”。 首字母缩写词代表什么意思，无论手机是否干净，这意味着什么？

Dear How-To Geek,

亲爱的How-To Geek，

I’m recently out of contract with my cell carrier and I really don’t want to get back into a lengthy contract just to upgrade my phone. As such, I’ve been searching eBay and Craigslist for used phones I could add onto my account without getting stuck in another 48-month contract. One term that comes up in just about every search is “ESN” and sometimes “MEID”, and always in the context of whether or not that thing is “clean”. This is the first time I’ve done anything other than just walk into the local cell store and sign some paperwork to get a new phone, so I’d like to do this smart and not end up with a phone that doesn’t work. So what’s this clean ESN business and how do I make sure I’m getting a good used phone?

我最近与手机运营商没有合同，我真的不希望为了升级手机而重新签订一份冗长的合同。 因此，我一直在eBay和Craigslist上搜索可以添加到我的帐户中的二手电话，而不会陷入另一个48个月的合同中。 几乎每个搜索中都会出现一个词，即“ ESN”，有时甚至是“ MEID”，并且始终取决于该事物是否“干净”。 这是我第一次做其他事情，而不仅仅是走进当地的手机商店并签署一些文书工作以购买新手机，所以我想做到这一点，而不要以无法使用的手机告终。 那么，这是什么干净的ESN业务，如何确保我得到一部二手电话呢？

Sincerely,

真诚的

Acronym Averse

首字母缩写词Averse

Let’s start with the basics and then move onto how you can use that knowledge to protect yourself as a consumer. ESN stands for Electronic Serial Number and was introduced as a unique identification number for all mobile devices by the FCC in the early 1980s. Electronic Serial Numbers were attached to CDMA devices (CDMA just refers to the radio type in the mobile device — Sprint phones, for example, are CDMA devices). Later, the ESN system was revised into the MEID (to account for a shrinking pool of available ESNs), and still used for CDMA devices.  Another number to be aware of is the IMEI (Interational Mobile Station Equipment Identity) number, which is the ESN equivalent for GSM (e.g. ATT&T) based phones.

让我们从基础开始，然后继续介绍如何使用这些知识来保护自己作为消费者。 ESN代表电子序列号，并在1980年代初被FCC用作所有移动设备的唯一标识号。 电子序列号附加到CDMA设备上(CDMA只是指移动设备中的无线电类型，例如Sprint电话就是CDMA设备)。 后来，ESN系统被修改为MEID(以解决可用ESN的减少)，并且仍用于CDMA设备。 要注意的另一个号码是IMEI(国际移动站设备标识)号码，它是基于GSM(例如ATT＆T)的电话的ESN等效项。

Although ESN, MEID, and IMEI are distinct identification standards, ESN has come into popular usage as a catch all for the serial number (in whatever format it may be in) for the phone in question. As such, you’ll see references to the ESN number of an ATT-branded iPhone even though that phone actually as an IMEI, not an ESN. In fact, we’re going to use it in the same fashion for the rest of our response unless we’re explicitly referring to a specific identification number system.

尽管ESN，MEID和IMEI是不同的识别标准，但ESN已作为一种流行用途，可以捕获所涉及电话的序列号(无论采用何种格式)。 这样，您会看到对ATT品牌iPhone的ESN编号的引用，即使该电话实际上是IMEI而不是ESN。 实际上，除非我们明确引用特定的标识号系统，否则我们将在其余的响应中以相同的方式使用它。

Now, why does the ESN matter to you, the consumer? Cellphones are valuable and carriers have a vested interest in them (after all, the real price of that iPhone you just picked up isn’t actually $99, the carrier is heavily subsidizing your phone’s cost via the extended contract you just signed). They use ESNs as a tool for tracking phones and, when need be, banning phones from their network.

现在，ESN为什么对您，消费者重要？ 手机很有价值，运营商对此也有着既得利益(毕竟，您刚拿起的iPhone的实际价格实际上不是99美元，运营商通过您刚刚签订的扩展合同在很大程度上补贴您的手机成本)。 他们使用ESN作为跟踪电话的工具，并在需要时从其网络中禁止电话。

There are two principal reasons why an ESN would be blacklisted: the phone was reported stolen, or the phone is attached to a cellular carrier account with an outstanding  balance.

将ESN列入黑名单的主要原因有两个：举报手机被盗，或者手机被挂在手机运营商帐户上且余额未清。

The first scenario is actually fairly rare, many U.S.-based cellular carriers didn’t actively use ESNs this way for the longest time. In fact, AT&T only started recording and blacklisting the IMEI numbers of stolen phones in November of 2012 and only after pressure from government agencies. The second scenario, failure to pay an account balance or skipping out on a contract, is much more common. The majority of phones you encounter with a “bad ESN” earned that blacklist status because the previous owner of the phone left the company with a huge unpaid bill.

第一种情况实际上相当罕见，许多美国的蜂窝运营商在最长的时间内没有积极地使用ESN。 实际上，只有在政府机构施加压力之后，AT＆T才于2012年11月开始记录和将被盗手机的IMEI号码列入黑名单。 第二种情况是，不支付帐户余额或跳过合同，这种情况更为普遍。 您遇到的大多数带有“ ESN不良”的电话都获得了该黑名单的资格，因为电话的前任所有者给公司留下了巨额的未付帐单。

So, how can you use this information to protect yourself? You can refuse to purchase a phone without a clean ESN. When it comes to eBay listings, it’s tricky to completely protect yourself as you are at the mercy of the seller in many regards. First, you should try to purchase from eBay sellers that obviously specialize in turning over phones as they’re the most likely to have run the ESN and they’re invested in not having to deal with the hassles of returns and customer service headaches. Contact them and request the phones ESN so you can check it yourself before placing your bid. If they refuse, shop elsewhere; it’s unreasonable to expect you to bid several hundred dollars on a phone without knowing if you can even activate it with your carrier.

那么，您如何使用这些信息来保护自己？ 您可以拒绝购买没有干净ESN的电话。 当涉及到eBay列表时，要完全保护自己很棘手，因为您在许多方面都受卖方的左右。 首先，您应该尝试从eBay卖家那里购买产品，这些卖家显然专门处理电话，因为他们最有可能运行ESN，并且他们投资于不必处理退货和客户服务难题的麻烦。 与他们联系并请求电话ESN，以便您可以在出价前自行检查。 如果他们拒绝，则在其他地方购物； 期望您在手机上出价几百美元而不知道您是否可以通过运营商激活它是不合理的。

When purchasing a phone in person, one of the easiest ways to avoid a headache is to meet the person you’re purchasing the phone from at a store that services the cellular provider you plan on using the phone with. In some cases, this is the only way to get an official company ESN check. Sprint, for example, no longer does ESN checks over the phone.

亲自购买电话时，避免头痛的最简单方法之一是在为计划使用该电话的蜂窝电话提供商提供服务的商店与正在购买电话的人会面。 在某些情况下，这是获得官方公司ESN检查的唯一方法。 例如，Sprint不再通过电话进行ESN检查。

In the store, you can hand the phone right over to the company rep and ask them to check if the phone is clear for use on their network. Suggesting you meet at the store so you can activate the phone right away is a great way to get rid of scammers right off the bat; they won’t want to meet you at the store if they have a bad phone.

在商店中，您可以将电话直接交给公司代表，并请他们检查电话是否可在其网络上使用。 建议您在商店见面，以便立即激活电话，这是一种摆脱骗子的好方法。 如果电话坏了，他们就不想在商店见你。

What if you don’t have a local store you can stop by? In this case, you’ll need to check the ESN yourself. On 99.99% of phones, the ESN (or equivalent) is located under the battery on a sticker. Open the case, pop the battery, and look at the number. On devices that are sealed, like the iPhone, you can find the identification number in the system menu.

如果您没有本地商店怎么办？ 在这种情况下，您需要自己检查ESN。 在99.99％的电话上，ESN(或等效版本)位于贴纸上电池下方。 打开外壳，弹出电池，然后查看数字。 在密封的设备(例如iPhone)上，您可以在系统菜单中找到标识号。

Once you have the number, you can get to the bottom of things in one of two ways. You could call the support line for the specific carrier you want to use the phone on. This is by far the best way to go about it. It takes more time than the web-based method we’re about to show you, but it gives you direct confirmation that the phone will work on the network you want to use it on. It’s important that you are specific in who you call. Let’s say, for example, you have a Sprint branded phone that you want to use on Ting, a Sprint reseller. Call Ting, not Sprint. If the phone has been activated before as a Ting phone, then Sprint will have permanently banned the phone and will report that it has a bad ESN even though Ting will happily activate it again. The same goes for most other major carriers and their resellers; the major carriers will frequently blacklist phones that have been used with their resellers, but the resellers have no problem with them.

掌握数字后，您可以通过以下两种方法之一来深入了解事物。 您可以致电要使用电话的特定运营商的支持热线。 到目前为止 ，这是最好的解决方法。 它比我们将要向您展示的基于Web的方法花费更多的时间，但是它可以直接确认您的手机可以在您想要使用它的网络上运行。 重要的是要明确与谁通话。 举例来说，假设您要在Sprint经销商Ting上使用Sprint品牌的电话。 打电话给Ting，而不是Sprint。 如果该电话之前已作为Ting电话被激活，则Sprint将永久禁止该电话，并且即使Ting会很高兴再次激活它，也将报告它的ESN不良。 大多数其他主要承运人及其代理商也是如此。 主要运营商会经常将与他们的经销商一起使用过的电话列入黑名单，但经销商对此没有任何问题。

If you don’t want to/can’t call the carrier, there are quite a few ESN check websites out there. These sites will give you a good idea if the ESN is clean or not. While we’ve never had any false positives using an ESN check web site, we do want to stress that the only truly foolproof method is to call the carrier.

如果您不想/不能致电运营商，那里有很多ESN检查网站。 如果ESN是否干净，这些站点将为您提供一个好主意。 尽管我们从来没有使用过ESN检查网站的任何误报，但我们确实要强调，唯一真正安全的方法是致电运营商。

For web-based checks, some of the more popular/reliable sites are Swappa (a phone/gadget purchasing company, their tool is seen in the screenshot above) and CheckESNFree. As a general rule, the more information online ESN checkers return, the better. In the screenshot above we get a valid ESN check, a carrier, and even a model  number. With older phones or phones not in the system, you’ll get a simple “this is a valid ESN” type response, but no specific information.

对于基于Web的检查，一些更受欢迎/可靠的网站是Swappa (电话/小工具购买公司，其工具在上面的屏幕快照中显示)和CheckESNFree 。 通常，在线ESN检查程序返回的信息越多越好。 在上面的屏幕截图中，我们获得了有效的ESN检查，载体以及型号。 对于较旧的电话或不在系统中的电话，您将获得一个简单的“这是有效的ESN”类型的响应，但没有特定的信息。

Armed with the knowledge of what an ESN is and how to use one to confirm the status of a phone, you’ll be in a much better position to protect yourself from scammers and getting stuck with a bad phone.

掌握了什么是ESN以及如何使用ESN来确认电话状态的知识，您将处于一个更好的位置，以保护自己免受骗子的侵害并陷入不良的电话中。

翻译自: https://www.howtogeek.com/172849/ask-htg-whats-an-esn-and-why-do-i-care-if-its-clean/

手机esn不可用怎么解决