The company is developing cell phone jammer based

The needed jamming range of cell phone jammer can be got by adjusting the antenna direction of cell phone jammer .
The fake network license is a normal printer to print, the figures are not very clear, no dents. In general, the network license is more difficult to fake, after all, counterfeiting equipment needed in terms of cost is relatively high. Also can access the query to test the authenticity of the network license, this is not described in detail when you open a new cell phone is obvious to note that "key parts" of the phone has a factory film do focus on prevention, such as the new phone's internal screen, external screen, the camera phone lens, because as long as these parts of the contact, it will leave a fingerprint. So when you see the fingerprints on the new phone, let the vendors how to explain you do not listen. The company is developing cell phone jammer based on the new technology.
In addition, the dust and the use of traces is equally difficult to avoid the refurbished mobile phones, mobile phone up and down the shell gap between the keyboard around the gap, as well as the charger slot, etc. are easy to place of the "filth", the flip phone The hinge will leave traces, you also have to pay special attention to. Refurbished phones are generally used shell imitation of the original, or is the old shell is carefully polished, so the two parts before and after the phone casing is prone to is not closed tight, the left seam great authentication method to use the fingernail test The test whether to insert the phone up and down to cover the seams, if you can insert is assembled shell. After the delay time reaches, cell phone jammer will be automatically shut off. 
NetDevice. Literally it is "network equipment" or "network device", but in fact it is neither the router does not refer to the switch, but with the Internet, networked small equipment, including desktop and notebook computers. NetDevice including handheld computers, two-way pagers, set-top boxes, smart phones, car PC, as well as dedicated send and receive E-mail, small tools. It was also known as the NetDevice InformationAppliance (information appliances). WCDMA is the abbreviation of the WidebandCodeDivisionMultipleAccess. This is a third-generation wireless communication (3G) standard, can provide sufficient bandwidth, wireless multimedia applications become possible. The antenna of cell phone jammer is the external type.