Why are we watching cell phones all the time? To answer this question, first we need to know, what can cell phone do. It could help us to pay our bill, log in Internet, watch movie, play game, guide our way as navigator, write blog, network chatting, and don't forget that it could also make phone call. Now we almost can not live without cell phone. But in many places, we need cell phone signal jammer also. Why? You may notice that cell phone is not welcome in many places, like exam room, law court, cinema, conference room, restaurant, theatre, concert, gallery and so on. Cell phone signal jammer, also named as mobile phone signal jammer, is a kind of device that could cut off cell phone signal, thus disable cell phone service in a certain area. Now we will be glad to introduce you a very good cell phone jammer: the Portable Mini Mobile Phone (GSM/CDMA/DCS/PHS/3G/TD-SCDMA) Signal Jammer, model number S807001. At the beginning of the 21st century, cell phone has started its rapid proliferation. Eventually, its ubiquitous status has raised problems such as their potential use to invade privacy or contribute to egregious academic cheating. In addition, public wills were growing against the intrusive disruption of cell phones in daily life.
While more and more civilians are suffered from chronically poor reception, such as high frequency noise. Fortunately, Portable Mini Mobile Signal Jammers are an alternative to more expensive measures against cell phones, such as the portable mobile phone jammer, which are mostly suitable for building a security environment. Cell phone jammers were originally created for the military and law enforcement to interrupt communications between criminals and terrorists. Some were designed to destroy the success of certain remotely explosives. The civilian applications were apparent too. So over time many companies design jammers for government use and at the same time sell them to private entities.

Specifications
Effective shielding radius: 5 ~15m
Total Power: 5W
Built-in 4500mAh lithium battery
Mobile phone signal frequency: GSM/CDMA/DCS/PHS/3G/TD-SCDMA
Isolation signal bandwidth:
-CDMA / GSM: 850 ~ 960MHZ
-DCS / PHS: 1800 ~ 1990MHz
-TD - SCDMA: 2005 ~ 2030MHZ
-3G: 2100 ~ 2170MHz
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