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What does it mean - "Next Tether Activation Policy: Blacklist"?

In this article, imei-server.com will tell you about where the iPhone comes from with the "Next Tether Activation Policy: Blacklist" blocking and whether it is possible to avoid buying a device in this status. And also consider what is Blacklist on the iPhone, what kinds of black list are there and whether it is possible to fix the situation. Now about all this in more detail.

What does "Next Tether Activation Policy: Blacklist" mean?

Blacklist is a list in which a cellular operator or Apple can add IMEI devices for a number of different reasons.
The operator can have the following reasons:
  • The device was lost or stolen. If the owner of the device has contacted his operator and provided him with the documents confirming the purchase, the operator at the request of the former owner puts the device in the status of "Blacklist Status: BLACKLISTED" or "GSMA Status: Blocked". After performing this action, the phone will no longer work in the network of this operator. This type of blocking can be displayed by the black list checker - Check iPhone Blacklist Worldwide.

  • Customer fraud (FRAUD)Customer's debts under an active contract. The operator is limited in its actions towards the client. If you bought an iPhone cheaply, by installments from the operator, and then stopped paying, then all that the operator can do is not to allow the unlocking of the device until you close the debt. Simply put, the operator "has you in mind" and makes IMEI on the blacklist. That is, this is the same blacklist, but directly from the operator. The operator brought you there on his own initiative and it is difficult to access this information. A normal blacklist check can not display this type of blacklist. As a result, it's possible that you bought an iPhone that was "clean", because it was not lost or stolen, but nevertheless you will not be able to unlock it as clean and the operator will reject your unlock request. Pre-check the device for the presence of debts can only be from the operators T-mobile US, Sprint US, AT&T US.

  • Customer fraud (FRAUD). The initiator of puting into the black list for this reason is the operator himself. The reason - any kind of fraud on the part of the client in relation to the operator. Provision of false documents, an attempt to obtain any services illegally. In our experience, this type of blacklist is rare, but it is no less serious than the Blacklist due to lost /stolen.

All these are the most common reasons why a device can be on the black list with the operator. And in all these cases, the cellular service provider will refuse to service this device. The only way out is to unlock the iPhone if the unlocking service is available for ordering.

Another type of lock is a lock directly from Apple. As an iPhone manufacturer and with a lot of effort to protect the data of its customers, Apple also has the ability to remotely block any device. And for that there are many reasons, for example, the fact of "permanent blocking" of a lost device, could minimize the theft from customers and theft from the company's warehouses. If the lock can not be removed, then the trade in stolen devices will not be so profitable. Ultimately, this will create  for iPhone an image being of "the most reliable" and will further raise the demand for Apple products. And this is a very serious argument to give enough attention to blocking issues.

So, what are the reasons of blacklisting from Apple? Let's consider in detail:

  • The device was lost or stolen. Yes, the first and most common reason, as in the case with the operator, is exactly the same - the iPhone was forgotten / lost / stolen. The client himself can put the device in this Blacklist, guided by instructions from the Apple website. That is, it's about turning on the lost mode (iCloud Status: Lost Mode On) using the FMI lock (Find My iPhone). It is worth noting that the black list of the operator and the blacklist of Apple, are not connected in any way and do not affect each other in any way. Your phone at the same time can be "clean"  from the operator, but be in the "blacklist" from Apple or vice versa. Show this kind of blacklist can check - Check iPhone iCloud: [Clean/Lost/Erased/Stolen].

  • The device was allegedly stolen from a warehouse or store. In this case, the initiator of the blockade is directly Apple. If there is no information about the date and place of sale in the company's database, it will be impossible to activate the device with a SIM card. This is the blocking of the type "Next Tether Activation Policy: Chimaera Device Pollicy" and a we wrote a separate article about issue of this lock. A lock of this type can be checked by GSX by IMEI.

All the reasons of the blacklist from the operator or from Apple are quite logical and understandable. They can be easily found by ordering appropriate checks. But what is "Next Tether Activation Policy: Blacklist"? Most sources, when answering the question about a phone with such a lock, limit themselves to the phrase: "It will NOT work anywhere, because it can not be activated." But we were not satisfied with this answer, and we decided to find out where such a status comes from and who includes it.

Let's look at the complete GSX by IMEI for such an iPhone. Here's how it looks:

Part Description: iPhone 6
IMEI Number: 3530680618*****
Serial Number: F70ND8N*****
Product iOS Version: 8.0
MAC Address: D1F48F3*****
Initial Activation Policy ID: 23
Initial Activation Policy Description: US AT&T Activation Policy
Next Tether Policy ID: 15
Next Tether Policy Description: Blacklist.
Unbricked: No
Unlocked: No
The problem immediately catches the eye - in a line that usually should display information about the operator "Next Tether Policy Description", instead of the operator is written "Blacklist". Based on the information about the initial activation policy "Initial Activation Policy Description", we see that this phone belongs to the company AT&T. But it was not updated via iTunes (Unbricked: No) and was not unlocked (Unlocked: No), that is, it will not accept SIM cards from other operators.
No less interesting is the fact that when checking for a presence in the black list through a check - Check iPhone Blacklist Worldwide, we received information that this IMEI is "clean":
IMEI: 3530680618*****
Model: APPLE IPHONE 6 (A1549)
Blacklist Status: CLEAN

To check the status of this phone directly from AT&T US, we sent a request for an unlock. Our request was accepted. But in the end we got the answer: "Your unlock request was denied because the IMEI number doesn't match a device that's compatible with the AT&T network." This means that our IMEI allegedly does not belong to the network of AT&T. It is worth noting that if this IMEI really was from the network of another operator, AT&T would reject our request immediately and our application would not even be accepted. It turns out that our phone is "clean", but is on the black list. And it is locked to the operator, who denies it. How can this be?

The thing is that we are dealing with the status of Blacklist Worldwide, it is a lock that operates in all countries of the World and which can not be turned off. This lock is included by Apple, but on the initiative of a specific operator who has applied with this request.

In what cases is the lock - Next Tether Policy Description: Blacklist?

Next Tether Policy Description: Blacklist

If this phone were stolen from a warehouse or an Apple store, and then someone wanted to activate it with a SIM card, then we would see the status of "Chimaera Device Pollicy". And in this case, the same situation occurs, but the device is stolen directly from the operator.

When a new phone, sealed and in a box is stolen from the operator, it means that no one has entered into the database information about the date and place of its sale. As soon as someone tries to activate it with a SIM card, IMEI automatically enters the status of "Next Tether Policy Description: Blacklist".

So it turns out that our request for an unlock was initially accepted, the operator had a phone with this IMEI for sale, but then we immediately get a refusal, because in the database there is no information about the purchase, or the activation date and such phone "does not exist". For the same reason, any checks on the blacklist will say that the phone is clean, just for lack of other information about this device.


  1. IMEI of any device stolen from the operator is entered in the international black list, which is designated by the status - "Next Tether Policy Description: Blacklist". Remove from the black list of this type is impossible, even the WorldWide unlock will be powerless in this particular case.

  2. There is no simple advice how not to buy such a phone. Until you try to install a SIM card, the GSX check by IMEI will show a normal report. The fact that you are being sold a new phone, in films, in a box, may suggest that the worst thing you can expect is a lock from the operator. Whereas in fact, if the seller is a private person, it will be better to refuse such a purchase. For already activated devices, order a check for the lock status from the operator and the status of iCloud - this is the only reliable method to avoid an unpleasant situation with the purchase of such a phone.

We hope this was useful for you and we managed to shed light on the concept of "black list" for the iPhone. Consult us at support@imei-server.com and we will answer all your questions about the unlocking of the iPhone and other popular brands - Samsung, LG, ZTE, Huawei, Alcatel, Motorola, HTC, BlackBarry, Nokia, Sony, Lenovo...


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