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:

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.

Please note that XCell Technologies resellers are using the same black boxes, the only difference being that reseller boxes have no XCell logo.
XCell Technologies has changed the phone box design since May 2015:

You can find the manufacturer website URL on the phone box.
No XCell Technologies URL on reseller boxes.
Phone box design has changed:

Every XCell product comes with a security seal applied on the phone box, on the right corner.
Phone box security seal has been changed:

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.
A new User Manual or the newest XCell Dynamic IMEI v3 Stealth Phone:

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

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.

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.
Backside security seals has been changed by XCell Technologies:

XCell Dynamic IMEI v2 Stealth Phone has a dedicated user interface and an original theme.
The new XCell Dynamic IMEI v3 User Interface have a new User Interface:
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.