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XCell Dynamic IMEI versus Siemens stealth phone

5/31/2015

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A few days ago we have found an interesting video posted by someone annoyed by the way the Samsung stealth phone is presented by the dude behind JD Unlocking Service. That GSM repair shop guy that pretend to be a qualified security dealer.
The text posted on video description is even more interesting. Here it is:

"This is a video response to the video posted here: https://youtu.be/jddDwzA2pq0

The guy who posted the video keeps saying only one thing: the Siemens that he sells is completely changing its IMEI (with no restore option), while Samsung does not change its original IMEI. And he's right. But this dude just does not understand (or is hiding facts) that is not important whether the original IMEI is changed or not, being important only IMEI that the phone send to the network, and nothing else. Fact: on my XCell phone, IMEI change depends on several parameters, more than the ones that generate change IMEI on Siemens. Simple as that. XCell rules.

My XCell stealth phone will always keep its original IMEI, for legal purposes. This mean that you can any time restore original IMEI. Please note that in England (and probably many other countries), changing phone IMEI for good is prohibited by law. I can use my XCell stealth phone in a legal manner just because I can restore the original IMEI whenever I want.

As a short explanation, the IMEI that pops up on the phone screen when you dial *#06#, will be the same IMEI that the phone will use to connect to GSM network, and the same one that will be captured by an IMSI Catcher (in case you have enabled change IMEI function). The original IMEI will be kept on quarantine (inactive) until you will restore it by enabling "Stay original" function.
Any GSM Interceptor (IMSI Catcher) will capture IMEI off air and obviously not by dialing *#06# on the target phone. I hope that make sense for any of you.

You have to make difference between original IMEI (that is quarantined by the phone OS when you enable change IMEI function) and the IMEI sent by the phone to the network (and to the GSM Interceptors as well), which is a dynamic one and is not the same with the original IMEI.

One more thing: that dude is comparing a fake Samsung stealth stealth phone (that he probably sell as well) with a (he say) genuine Siemens stealth phone. Why doing that? Why comparing a totally different product with a fake one? Why compare his best selling product with a fake one? And what makes us confident that Siemens he sell is not a fake too, since he is having already a fake Samsung? Looks like a silly marketing strategy which raises legitimate questions regarding his competence in selling secure phones. And yes, why would you buy a secure phone from an GSM repair shop? Would you buy a racing car from a vehicle graveyard? Googling for JD Unlocking, I found out that is a simple repair shop. No joke.

Last but not least: I found some old ads on eBay saying that JD Unlocking is selling Samsung G600 stealth phone firmware. He sold fake Samsung stealth firmware few years ago as genuine stealth firmware, and just now is saying that Samsung stealth phones does not work? How comes that? What about people that bought the firmware or the phones from him, if now he say that are not working? And why trust him, now?

Please note that I do not sell stealth phones, software or related products. I'm just a simple stealth phone owner, using by chance a genuine XCell stealth phone, for two years so far. No problems whatsoever, unless you don't mind to use an old-fashioned phone (the positive reverse is that the phone go as unnoticed for untrained eye), even if the phone is unused. I believe that when it comes about security calls, the way that the phone looks is the last thing you are interested in. My phone has done a brilliant job in all these two years, which is why I found necessary to post this video."

The funny thing is that the conclusions reached by the person who posted this video are almost identical to ours. Here is how more and more people begin to be aware of counterfeit stealth phones.
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Authentic Stealth Phones: 9 easy steps to identify the real ones

5/31/2015

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The process of identifying a fake product is an art in itself. While most counterfeit products can be identified for it being simply identical or deceptively similar, there are other products, brands and designs which might not be able to be identified by the common eye. In order to find information on fake products, a keen sense of knowledge of brands and original products required to be cultivated. In case of high tech products like XCell Stealth Phones you need not only to take a closer look but also solid technical knowledge.
This is why we have made a simple guide to help you to identify a genuine XCell Stealth Phone.

Please see below what's new on the XCell Technologies new release, XCell Dynamic IMEI v3 Stealth Phone:

genuine stealth phones

Shipping Box: according to XCell Technologies representatives, since January 2015 all XCell Stealth Phones are being shipped into special branded boxes, as you can see on the image below.

genuine stealth phone
Genuine stealth phone shipping box

genuine stealth phone
According to XCell Technologies, since 2010 all XCell Stealth phones comes in branded black boxes.
Please note that XCell Technologies resellers are using the same black boxes, the only difference being that reseller boxes have no XCell logo.

genuine stealth phone
Genuine stealth phone box
Update:
XCell Technologies has changed the phone box design since May 2015:
genuine stealth phone
New genuine stealth phones boxes

genuine stealth phone

You can find the manufacturer website URL on the phone box.
No XCell Technologies URL on reseller boxes.

genuine stealth phones
Manufacturer URL
Update May 2015:
Phone box design has changed:
genuine stealth phones
New stealth phones box design

original stealth phones

Every XCell product comes with a security seal applied on the phone box, on the right corner.

genuine stealth phone
Phone Box Security Seal
Update May 2015:
Phone box security seal has been changed:
genuine stealth phones
New hologram security seal

genuine stealth phones

XCell Stealth Phones come with an User Manual, where special functions are explained in detail. Because of sensitive information, some details - such as location spoofing function - are not public, being communicated directly to the user by email.

original stealth phone
XCell Dynamic IMEI v2 User Manual
Update May 2015:
A new User Manual or the newest XCell Dynamic IMEI v3 Stealth Phone:
genuine stealth phone
New XCell Dynamic IMEI v3 User Manual

genuine stealth phonesSpecial setup instructions

Authentic XCell Stealth Phones come with a Quick Settings leaflet, containing special setup instructions.

genuine stealth phones
Special setup instructions

genuine stealth phone

Excepting XCell phones sold by resellers, all XCell devices have an engraved logo. At the express request of the user, the phone can be delivered without logo (generic phone), for a discreet use.

genuine stealth phone
XCell Logo

genuine stealth phones

All XCell handsets are having two distinctive security seals, on the backside: the golden one, attesting that the phone is an original XCell product, and a smaller one which secures one of the screws.

genuine stealth phones
Backside Security Seals
Update May 2015:
Backside security seals has been changed by XCell Technologies:
genuine stealth phones
New hologram security seals

genuine stealth phone

XCell Dynamic IMEI v2 Stealth Phone has a dedicated user interface and an original theme.

original stealth phone
Genuine User Interface of XCell Dynamic IMEI v2, original theme
Update May 2015
The new XCell Dynamic IMEI v3 User Interface have a new User Interface:
genuine stealth phone
New XCell Dynamic IMEI v3 User Interface

These differences are visible to the naked eye.
The other differences (the most important actually) are related to the effective functioning of the phone and its special features. Authentic stealth phones works exactly as described on the manufacturer website, while counterfeit stealth phones keeps only the appearance of a stealth phone, its special features being nonfunctional. We have posted on our blog about functional differences between fake and real stealth phones: click here.
We suggest you also watch the demo movies that can be found on the manufacturer website: authentic stealth phones has been tested against an GSM Interceptor.

What can you do if you're not sure?
If you are not sure that you are going to buy an authentic stealth phone, firstly check if there are all security seals and other items listed above. If the seller will not respond to your requests (by sending some detailed pictures, for example), there are already doubts and a primary indication that the phone is not authentic. You may also contact us just because we have enough knowledge that allow us to distinguish between genuine and fake stealth phones. Or you can simply contact directly the original stealth phones manufacturer to confirm if the phone comes from a genuine reseller. Simple as that. And please keep in mind that behind a small price usually hides a counterfeit product.

What can I do if I have already bought a fake stealth phone?
First of all, you have to be aware that you are carrying a ticking bomb in your pockets, only looking like a stealth phone. It's only a matter of time until the so-called stealth phone will betray you, and your wiretapping will explode in a criminal case.
Well, unfortunately we can not offer any legal advice. We suggest you to contact your lawyer or call the Police if you consider that you have been a victim of stealth phone scam. If you bought fake stealth phone on eBay, there is very little chance to refund your money from scammers: they successively open new accounts, as the old accounts are closed down following the victim complaints. Anyway, the first thing you need to do is to quit using your fake stealth phone: does not gives you any call security.

What is the impact of counterfeiting? What are the trends?
The impact of using a fake stealth phone consist in a major breach to your personal security and can even affect your freedom. In the last year the trend for stealth phone scam is that scammers are trying to give the appearance of an authentic stealth phone through various elusive strategies, as the one with the fake label on the backside of the phone, which has been presented on our blog a while ago. Also the scam trend is manifested through the use of simple techniques to attract new buyers, such as "2015 product update": buyers are being fooled that would buy an updated version of the phone stealth. We have wrote about it recently, in our blog.
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Anonymous SIM card scam

5/31/2015

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Anonymous SIM cards: are really anonymous?

Well, the list of so-called benefits of using an anonymous SIM card is apparently quite long, as the scammers pretend:
- Calls can be made or received from anywhere in the world. Full list of countries (it's not every single country included, we just let you know) is offered to the buyer only after payment. Which obviously is an unfair approach.
- No deposits.
- No ID required.
- Without full written requests.
- No monthly bills.
- Additional SIM cards available at the same price.
- Online top-up at anytime.

All above mentioned are true. But not these "advantages" consists the scam.
These are actually the standard features of a prepaid SIM card. In fact, anonymous SIM cards are nothing but prepaid SIM cards purchased from countries where you do not need an ID to purchase a SIM and international roaming charges are relatively low. In general these SIM cards come from Asian countries and some EU countries including Belgium, Denmark, Cyprus, Estonia, Latvia, Czech Republic, Finland, Lithuania, Romania, .Bulgaria, Andorra, Monaco, Belarus etc.
This business has a relatively success only in countries that can not be purchased a prepaid SIM card without showing an photo ID. Not just scammers but even serious and reputable companies rely on such scams, unfortunately.

Anonymous SIM cards are really anonymous? The short answer: are not at all anonymous.
Extended answer: a prepaid SIM card is anonymous only to the common people who can not find easy the SIM user details. A simple phone number will not lead to user identification unless he will make serious mistakes or if it does not intend to protect his identity. If the SIM card is used for a sufficiently long period (months or years), there is a possibility that the user identity to be determined by using simple investigative techniques, which are readily available to every detective or skilled people.

But when it comes to the law enforcement agencies that will want to find a prepaid ("anonymous") SIM card user's identity, the situation changes radically: no chance to hide your identity. Whether using the network operator or through lawful interception systems, finding the identity of any prepaid SIM user is a matter of a few days or even hours.

What exactly can not hide an  "anonymous" SIM card?

- Can not hide the phone location and default user. The explanation is simple: to be used (to make any calls), any SIM card have to register on the local GSM network, no matter the country and carrier that issued the SIM. This means that the SIM card will be permanently connected to the GSM network. The operator can quickly perform localization procedures (GSM triangulation), at the law enforcement request. In urban locations the location tracking accuracy is 50 meters or less. Moreover, there are plenty of GSM interceptors that are having location tracking capabilities.
If the situation requires, the suspect can be identified, located and arrested based on location tracking.

- Voice calls, SMS and data traffic cannot be hidden. When an anonymous SIM card user will attract the law enforcement agencies attention, that particular user will not be anonymous anymore: they will know the call list, voice calls content, text content of SMS, persons with whom he communicated, will would make a profile of the target user based on its habits an communications pattern, etc. And all this after a few days of using the "anonymous" SIM card.
Depending on performance of GSM interception systems  and network equipment, law enforcement agencies and  the carrier will have access to various data: target GPS location (more accurate than GSM location), phone book, data traffic etc.

At this point you can draw a conclusion: an anonymous SIM card is not at all anonymous. The fact that the average person can not find information about the prepaid SIM user, does not make that SIM to be anonymous. Without hiding around the bush any user of such a SIM card is hoping not only to remain anonymous to the average Joe, but also to stay anonymous to the law enforcement agencies. Is that possible? Not at all.
Basically, selling prepaid SIM cards pretending to be anonymous SIM cards is just another scam, and resembles (in a funny way) selling a nanny cam as a spy cam. Which you have to agree, is hilarious.
untraceable sim card scam
Untraceable SIM card scam, on antitap.com
More blog entries about the scams on antitap.com, imeichanger.com and gsmsecret.com:
  1. Another seller, busted: fake stealth phones for sale
  2. The truth about antitap.com, imeichanger.com and secretgsm.com
  3. A comprehensive view on stealth phones scam
anonymous sim card scam
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A new fake backside label

5/31/2015

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fake stealth phone
A new fake stealth phone IMEI sticker
Two days ago we've got an email from Mr. J.T. Lawrence, a respectable lawyer that has bought a fake stealth phone from eBay. He says:

"Until I read your blog entries I did not know that there are fake stealth phones. Last year I've bought one on eBay (from an UK seller), and the decision was made only because of the low price of the phone. After a week, at my request the Police has confirmed that my phone was being intercepted for a month because of one of my clients. I will not go into details, not important for this case.
However, the real problem is this: at that time, my so called "stealth phone" has not triggered any taping warnings. Not even once. I've got the confirmation that my phone was tapped with an IMSI Catcher.
Personally, I have not been affected by this situation. But I would like that other fake stealth phone users to learn that the phones does not work as sellers describe on eBay, the danger arising from this being a major one. Moreover, I have noticed that the seller from whom I bought the phone, has sold until now (Jan.2015) a pretty large number of fakes: over 90 devices.

For this reason I have sent you some pictures of the label stuck on the back of the phone, which identify a fake stealth phone. It's a different kind of label than you previously presented, being probably the newer type.

You may be wondering what I did further. Well, I have contacted the scammer, demanding explanations about the phone malfunction. First (and last, by the way) he replied nonchalantly that he have no idea about how interception work and how phones get tapped, being a simple seller. All this, despite the fact that his eBay page contain some explanations about cell phone interception. This was the only "customer service" received from this seller. Since then he did not answer my messages. Of course, I've got no reply when I have requested a refund because the "stealth phone" that he sold to me is a fake one.

I hope that my bad experience regarding cheap stealth phones will be a lesson for those who want to buy a phone at low price. And urge all those who have already done so, to immediately request a refund from the seller.
I will also keep in mind your advice, and another time I'll buy a genuine stealth phone from true manufacturers. By the way, I've bought mine from a repair shop guy... Not a smart idea, huh?"

He sent this pictures:

Our photo edit:
fake stealth phones
Samsung has never used such labels.
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More tests, more phones

5/31/2015

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Back in December 2014, we have tried to bypass USB security filter of an XCell Dynamic v2 Stealth Phone (the true stealth phone) as a part of tests regarding passive security and anti-forensic features.

First, we have used our Cellebrite cell phone extraction device in order to extract physical files of the XCell Stealth Phone. No results. Cellebrite UFED could not connect at all to the phone via USB, physical access to the phone being 100% disabled.
genuine stealth phone
Testing a real stealth phone on UFED
genuine stealth phone
UFED fail: no connection to target phone, due to phone USB security filters
So we took the next step: we have tried JTAG connection, when disaster occurred: XCell Stealth Phone has died, with no chances to be resurrected. We found that bootloaders were self destroyed (as a security measure), the operating system can not be launched and this way no data can be extracted. XCell Stealth Phone went into a persistent loop in which we have not managed to bypass.
Picture
XStealth Technologies officials have told us that the phone is compromised, and no longer can be repaired in any way except by replacing the motherboard, an operation that cost 400 euro.
Conclusion: XCell Dynamic IMEI v2 phone is 100% secure when it comes to forensic investigations. No chance to extract any information of the phone.

So, earlier this year we have ordered other two XCell Dynamic IMEI v2 Stealth Phones, to continue our study. And now both phones has arrived to our laboratory:
genuine stealth phone
Genuine stealth phone box
genuine stealth phone
Genuine stealth phone boxes
genuine stealth phone
Genuine stealth phone boxes
genuine stealth phone
Genuine stealth phone boxes
We will keep you updated with the test results of USB security filter bypass.
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Another seller, busted: fake stealth phones for sale

5/31/2015

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This time: the guy behind imeichanger.com, secretgsm.com and antitap.com
Article disclaimer:
All data and information provided on this article is for informational purposes only, being widely available and collected off the Internet. We have taken website screenshots that might not be available at the time you read this blog entry, being removed by the website owner. All information is provided on an as-is basis. Read our Blog disclaimer.

The reputation (which we doubt that even exist before by some certain reasons) of antitap.com, imeichanger.com and secretgsm.com has been irremediably lost by these dirty actions of the guy behind these sites. We strongly recommend to avoid this websites.

The websites owner got caught using fake IMEI labels to fool the buyers that he sell proper and working stealth phones, and because of that he removed the pictures off his websites. That was too late, we have recorded him as scammer and all proofs are posted below and will remain available on our website, for anyone who wants to know the truth about this particular scammer.
fake stealth phone
Counterfeit stealth phone by antitap.com
We have discovered recently another website that is offering "stealth phones" on cheap prices. Apparently, this vendor is selling stealth phones that comes on the right platform: G608.
fake stealth phone on antitap.com
A fake IMEI sticker, for a fake stealth phone. By antitap.com
Getting IMEI from a fake stealth phone The thing that caught our attention in the mention "ANTITAP" on the back label, as you can see in the screenshot attached. Being an unusual and irregular mention on any mobile phone label and even more for a phone produced by Samsung, we proceeded to investigate this inscription. Thus, we used a software application called Barcode Scanner (an Android application freely available on Play Store) for reading bar code label. You can do this as well.
fake stealth phone on antitap.com
The IMEI barcode shows the fake label: Samsung G600, and not G608. Busted.
By scanning the bar code directly from our PC screen, we've got this result: The digits you can see in the photo above are just the phone IMEI. This bar code containing phone IMEI is present on any mobile phone.
We've proceeded further, in order to identify the phone model, by correlating IMEI that appears on the label. By parsing the IMEI code on a online IMEI analysing tool (www.imei.info), we've got this result:
fake stealth phone on antitap.com
Checking fake IMEI
Checking up the IMEI:
Picture
And surprise: IMEI belongs to Samsung G600. Busted! So, the IMEI claimed to belong to a Samsung G608 actually belongs to a Samsung G600, which is the wrong platform used by scammers to sell fake stealth phones. Simple as that.

A genuine Samsung G600 back label looks like this:
genuine stealth phone
Proper Samsung S/N: 11 digit
Please note the structure of Serial Number: 11 digit, as Samsung official says.

We did not stop there and asked an Samsung official about this label (IMEI and S/N). Here is his response: samsung_reply.pdf Download File

SAMSUNG  ELECTRONICS  CO.,LTD. 
416 Maetan3-Dong Yeongtong-gu, Suwon city, Gyeonggi-Do, Korea 442-742


Date:  Jan12, 2015 

RE:  Request of Information for IMEI 355683044004277

To: Mr. XXXXXXXXXXXXXXX 

The IMEI 355683044004277 belongs to an Samsung SGH-G600 that was produced by Samsung Electronics in 2007.

The serial number R1VPANTITAP is wrong an is not specific to Samsung S/N. Serial numbers used for Samsung G600 and Samsung G608 series are having 11 (eleven) digit, a sequence of letters and numbers but not only letters.

We are happy to assist you in your academic study. Please do not hesitate to contact us for further assistance.

Sincerely,
SEOUNG HO PARK
SAMSUNG ELECTRONICS CO.,LTD.

We also find that FCC ID A3LSGHG606 from that fake Samsung G608 belongs actually to Samsung G600:
fake samsung g600 stealth phone
FCC ID belongs to Samsung G600
This particular scammer is trying to fool buyers and taking advantage of the lack of information of most of you, when it comes to special mobile phones called stealth phones. This scammer sell fake stealth phones, making them to look like original ones (XCell) by sticking a false label on the back of the phone. And nothing more. No hardware modifications, no filters, nothing that can be named a real and working stealth phone.

Moreover, this scammer is trying to convince the website visitors and potential buyers that Samsung Electronics has built the "stealth phone" that he sell. Nothing could be more wrong: Samsung has never built stealth phones but only regular cellular phones.
The real IMEI change stealth phones are being built based on a patent that belong to XCell Technologies, the manufacturer company. The phones are manufactured only by XCell Technologies and sold directly to consumers or through various resellers and regional dealers, under various brand names or even as no name stealth phones for discrete use, considering XCell reputation and brand awareness.
You can easily identify a real XCell stealth phone by checking up the security seal and other things mentioned in the previous post.

Conclusions

If the low price is the only choice maker, you should think once again before buying a cheap stealth phone from a dubious seller: is that you want? A fake stealth phone is as useful as a real one? It will work the same? Will really protect your privacy? The answers are found in comparative tests presented in the previous post.

And not at last: our advice is just to avoid www.imeichanger.com and secretgsm.com, if you really care of your calls privacy.

fake stealth phones on antitap.com
Fake Samsung G608 sold by antitap.com
Update 30.05.2015:
The websites owner (imeichanger.com, antitap.com and secretgsm.com) has removed by some obvious reasons (he got caught using fake IMEI labels to fool the buyers that he sell proper and working stealth phones) the pictures that shows fake IMEI sticker. Right now he is only stating that the phones he sell are Samsung G608, as you can see on above screenshot.
Just for your own knowledge, if you want to challenge this scammer to disclose the real Samsung platform, you might ask him certain questions. Please contact us for further information.

Another hilarious and cheap trick used by this funny scammer (trick actually used before by the same person) is pretending out of the blue that he sell nothing but IMEI stealth Phone v4 (?!). Why this? Well, there is a simple and straight forward explanation: since XCell Technologies has recently released the real v3 Stealth Phone (please see their promo video), the scammer think that by simply claiming that he sell the newest version (v4), he will boost his sales. Since XCell Technologies - the real manufacturer - is clearly showing what the differences are between previous version (v2) an actual version (v3) on their videos (video 1, video 2) and webpage, the scammer is just stating that he sell v4 version. Only words with no facts behind. Not even a few pictures to support false claims. Moreover, he has used the same stolen pictures on phone description (please note that picture shadow used by XCell Technologies). 
Just to have fun on what he will find appropriate to explain in what exactly consist the changes that his "v4" is having you might challenge him to reply to your questions. Because we did and we had a lot of fun.

As a conclusion, what you should be sure is that there is no real "v4" version, but only words, a ridiculous and strange marketing strategy to sell something fake and obsolete.
fake stealth phones on antitap.com
Fake v4 version sold by antitap.com
Here is the real and the latest version of stealth phone developed by the genuine manufacturer, XCell Technologies. Please note the clearly spotted differences between the latest version (v3) an the previous one:

What else?
Well, as before there is no product manual, but only few heterogeneous and promiscuous explanations copied off the XCell website. Because XCell Technologies has understood do not disclose some crucial functions and how to be used to general public but only to its users, the scammer that have no clue about how the phone work and how cell phone interception is actually performed, has simply skipped the explanations about Channel lock and Unping functions. Also, he have no clue about how to proper use the IMEI change function. Actually there is no user instructions but only a promiscuous and hard to understand phone description. The conclusions are yours, and are more than relevant.

Following our investigations, we found that the website is run by a private person. There is no company behind website.
Hence the risk of buying off this site any products offered for sale. On Contact page there is only a contact form, with no postal address or other details regarding company location, things which should arouse suspicions straight away, to anyone. No wonder this scammer is confusing a website with the company itself, which beyond being a funny approach it relives his business understanding. We'll be back with more info.
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The truth exposed: Stealth Phones, fake vs. real ones

5/30/2015

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The ultimate test
Before reading any explanation, please watch the video footage below. It is self explanatory.
This is the supreme test that any scammer or fake stealth phones vendor will hide from you.

The video contains a test done with a SIM card that was intercepted (taped) at that time, tested on two stealth phones (aka change IMEI phones, untraceable phones or dynamic IMEI phones) that looks the same but
are essentially different: a fake and a real one.

First we have tested the fake stealth phone. Although the SIM card was intercepted, no call interception alarm was triggered.
The second time we have tested the intercepted SIM card on a real stealth phone. Interception alarm was triggered as soon as the SIM card has been inserted into the phone. Also during the call was displayed call interception alarm: an open padlock red that persists throughout the call.

Picture
Preliminaries.

We are a team of three mobile communications professionals from an European University.  Read more about us.

Elaborating an academic study about security of mobile communications, our team bought among others a stealth phone via the Internet, as anyone else would do: by choosing the lowest price. We regretted this later, because at that time the low price was only one that made ​​the difference.


Our case.

Current market shows a relative abundance of stealth phones, most of them sold by private individuals on traditional online sales channels (Internet consumer-to-consumer direct sales). A person interested in buying such a phone is no doubt attracted by the lower price, as the only selection criterion, in the absence of significant information about stealth phones and how mobile wiretap works.
Many buyers have already made this wrong choice, and now their mobile calls security is seriously affected. Why? Because they bought a cell phone that just looks like a stealth phone without actually having stealth phone functions: only apparently stealth functions are present on the phone, but they do not work properly, as vendors claim.
Why this situation? Because a stealth phone needs not only special software, but also substantial hardware changes that make the software run properly. Both software and hardware changes are patented by a Swiss based company, XCell Technologies LLC. This company (and their resellers and distributors) are only able to deliver a true stealth phone, 100% functional.
From technical explanations provided by the company representatives we understand that malfunction also come from the wrong choice of phone platform. While legitimate manufacturer use Samsung G608 platform, those fake stealth phones use cheaper Samsung G600 platform, which is simply not compatible 100% with the software (see Photo 1). We have to mention that the two phones Samsung G600 and G608 looks apparently identical, but have significant structural differences.
fake stealth phones
Photo 1
Picture
Have you ever wondered why some stealth phones are sold by private individuals? The answer is unequivocal and straightforward: on these phones is installed a cracked software, which not work properly, is unstable and is a fraud, in the end of the day. Also, these phones are not hardware modified in any way, which makes the software installed to be useless, giving only the appearance of a stealth phone, not the functionality of a real stealth phone.
In fact, people who sell these fake stealth phones do not know anything about the phone function, nor about the ways in which mobile phones are wiretapped (intercepted). They are limited to installing the cracked software on the phone and copying brief explanations and images from legitimate manufacturer webpage, trying to look more real, informed and professional.
Those who buy a fake stealth phone from a private person (as we did in the first instance) will have to face other problems, too: the lack of elementary customer service  or worse,completely wrong explanations about stealth phone functions that will seriously affect the security of mobile calls. Also there is no product guarantee or eventual replacement or repair. The fake stealth phone bought by us got stuck after a few weeks of testing and we were lucky that we managed to make the film. Repair or replacement was refused repeatedly by the vendor, and the website where we've bought has not taken any action against him. Vendor says he only sells phones, not repair nor replace them because it's just a private person and he do not provide additional information about the phone, for those who bought it. But when it comes to personal security and mobile communications, such an approach is totally wrong.

For these reasons we had to buy another stealth phone, to be able to continue our study on mobile communications security. This way we found XCel Technologies, a legitimate company that manufacture and sells these real stealth phones. Before buying the phone we have asked about operating conditions and repair or replacement in case of failure. We received a prompt and professional customer service, every single time. This company replaces any defective mobile phone, the general warranty term is two years, common to any other mobile phone. Until now, however, was not the case for any fixes, the phone works perfectly and does the job, as you can see in the video.

Customer service responses has helped us in our research on mobile communications security, through understanding the ways in which the mobile phone is monitored, tracked and wiretapped, the way it works IMSI catchers (aka StingRays in US) and possibility to detect them. Our study results will be published soon on the University website. Our study conclusions promises to be extremely interesting.
Other differences.

Besides that wiretapping alerts do not work at all, fake stealth phones differ from real ones not only from functional point of view but as legal aspects too. Fake stealth phones differ from real ones by the following aspects:

For legal protection of hardware changes, on real stealth phones are applied security seals, on the inside of the phone. See Photo 2, below.

fake stealth phones
Photo 2: Security seals
Real stealth phones have engraved the manufacturer logo (see Photo 3), because they can not be legally sold as original Samsung phones, since hardware and software changes that has been done are beyond the control of Samsung Electronics Co. From this point of view XCell Technologies comply with local law and international copyright law, without any export restriction of their products. Legitimate manufacturer sell stealth phones that are Samsung modded cell phones.
fake stealth phones
Photo 3
fake stealth phones
Photo 4
Another visible difference: fake stealth phones are using shoddy packaging, a ridiculous copy of the original packaging, as can be seen in the Photo 4. We've got information from other fake stealth phone users that some vendors sell these handsets even in paper envelopes or wrapped in bubble foil without any other packaging.
Since a real stealth phone have software and hardware changes, can not be sold as a genuine Samsung phone in the original packaging,  because basically is another product. The packaging used by the legitimate manufacturer is a quality one, unique and distinctive.

What else a scammer or fake stealth phone vendor will use to make you think that is selling a genuine stealth phone?
Well, some of them are trying to use some counterfeit IMEI stickers on the phone backside, trying to give a genuine appearance to their fake stealth phones.Sure, a sticker will not make a fake stealth phone, genuine. In fact not the sticker is important in our opinion, but the phone functions. And fake stealth phone functions does not work at all, as we have clearly demonstrated in the test above.
Others will try to lure you with attractive and suspiciously low prices.
It's too good to be true? If you find yourself asking this question, then probably yes, it is not true.
Others will try to use marketing methods that looks pretty hilarious when it comes to secure phones, as the guy behind imeichanger.com, anti-tap.com and secretgsm.com has done in the past: offering a free t-shirt for every handset that he sold. The same guy has been caught in the past, using fake G608 IMEI stickers, trying to fool people that he is selling proper stealth phones and not fake ones.
From then, his business reputation was pretty much ruined and now is trying to promote the idea that the sites and business owner has changed, trying to escape of such a bad reputation.. Please see our blog.

ounterfeit stealth phonesCounterfeit stealth phones
Conclusions. 

The low price can often be a trap, and in this particular case can be a very dangerous one: it will cost your personal security and will disclose secrets that you think you defend by using a fake stealth phone.

A counterfeit stealth phone is a ticking bomb in your pocket. Unfortunately you find out that you have been fulled by the scammer when usually is way too late: you "stealth" phone has been wiretapped and you got busted.

Trying to help those who want to buy a stealth phone, we asked XCell Technologies to notify us the resellers and distributors list. Company representatives were pretty reserved on the subject, saying that permission to disclose these details is not a part of distribution agreement, emphasizing that some resellers sell these phones under their own trademark and do not wish these details to be made public.
As you can guess, private individuals selling fake stealth phones does not fall into this category.





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