Handheld 18 Bands 5G Cellphone Signal JammerCell jammer is a wireless device that is used or plugged into the phone network to block or jam the signals from a cell phone.We have many cell phone spy gadgets in our daily lives. More and more are being used to monitor us. So we need a wireless cellphone jammer. This type of electronic spy device can put us at risk in certain circumstances. The most dangerous is the cordless phone. These devices can be found in many places such as a shopping center, supermarket, bus station or hospital, restaurants, cinemas, libraries and other public areas. They may have been installed to collect our personal information. This could put us in danger.We create jammer cell phones to help us get out of dangerous situations and live safer lives. You don’t have to worry about it turning on more often.We have lots of jammer in the product list. To learn more, take a look at some sample products.First, we have a 2017 new product: High Power Jammer GSM wifi LTE4G Military all Signals Mobile Phone. It transmits on three frequencies: wifi signal jammer. It will protect an area of approximately 15 meters from any blocking signals. It automatically restores all wireless network activity after it has been turned off. It also has additional functions that can block 3G and LTE4G signal isolator blockers:: GSM1800 (1805-1880MHz), 3G (2110-2170MHz) and wifi 2.4Ghz(2400-2500MHz). It is compact and can be carried by one hand. It can be used with either mains power or batteries. This is the best portable 3G wifi 4G GSM Jammer.The second is the CDMA DCS PCS GSM 3G-4G wifi signal jammers. These jammers are small and simple to use. It will turn off all wireless LANs, wifi, and phones within 20 meters of the jammer once it is activated. The frequency range covered by the jammer is CDMA/GSM(850-960MHz), DCS/PCS (1805- 1880MHz), 3G (2110-2170MHz), GPS(1570-1610MHz), WiFi (2400 – 2485 Mhz), LOJACK (168-178MHZ), 4GLTE (2620-2690MHZ or 2300-2400MHZ) and 4G (790-862MHZ or 720-790MHZ), covering all phones mentioned.We also sell the 15W Power 3G-4G CDMA GSM HSS WIFI Signal Jammer. Gros-shop.com has more information. We have many wireless video jammers available for customers around the globe. You can find the right jammer for you by looking at our phone jammer product listing.