4G Signal Jamming Device Reviews

2G 3G 4G 5G phone signal and WIFI 2.4G 5.8G signal blocker

Date:2020-10-25

Very effective! Some weight for home use. The quality is very good and the price is very favorable. Next time you need to buy it again !!!

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The Latest Handheld High Power 4G Mobile Jammer

Date:2020-10-23

The price of this Jammer is really cheap compared to many other online stores, and the performance of the Jammer is also excellent! Really wonderful, especially the design of the optional jamming frequency bands. High recommended!

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World First 22 Antennas 5GLTE 2G 3G 4G Wi-Fi GPS LOJACK Blocker

Date:2020-10-21

I realized that JAMMER-MART is a very serious and reliable company that sells their products at an affordable price and uses the fastest shipping method in the world. I am HAPPY with the products I bought !!!!

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30W effectively shields 3 networks 2G 3G 4G 5G mobile jammer

Date:2020-10-11

I appreciate such a well-built product. It works exactly as advertised and the only reason I didn't give it 5 stars is because the side switches are a bit small. You have to use a pen or the tip of your fingernail to turn the different channels on or off, but this is a minor problem. Good product!

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Handheld GSM 3G 4G GPS Lojack WIFI Signal Jammers

Date:2020-08-25

This is a solid, well-built device offering much more coverage than expected. The side dip switches are nice to the touch because I don't always need to turn GPS blocking on and be able to turn it off.

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Portable Handheld LOJACK GPS WiFi RF Cell Phone Jammer

Date:2020-08-25

I am a very satisfied customer because they always answer my questions on time. Good product and good packaging. I will order from you again, thank you very much.

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6 Antennas Desktop GSM 3G 4G GPS WiFi UHF VHF Blocker

Date:2020-08-25

A very high power jammer capable of jamming a very large area. Can adjust the interference range, it is very convenient to use, I am satisfied.

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16 Antenans All Mobile Phone Frequency DCS PCS 315MHz UHF VHF GPS WIFI Jammer

Date:2019-11-27

I've been looking for this 16-wire jammer for a long time, I have found it now, and am very happy.

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14 Bands Adjustable More Frequencies Desktop Signal Jammer

Date:2019-11-27

I put it in the production workshop, and I no longer have to worry about employees playing mobile phones all the time.

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Desktop 6 Bands UHF VHF Frequency SM 3G 4G GPS WIFI Jammers

Date:2019-11-16

I really like this jammer. From there, I can enjoy peaceful life and privacy.

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CDMA GSM DCS PHS 3G 4G GPS WIFI Bluetooth Desktop Signal Jammers

Date:2020-01-19

I received the jammer and it even arrived two days earlier than expected. After testing, the effect is better than expected. The fan is a bit stronger than I thought, but I am satisfied with everything.

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3 Bands Mini Portable GSM 3G GPS Signal Jammers

Date:2019-11-23

Really outstanding equipment, it's free US delivery service. I bought a free shipping and I love it!

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5 Bands Adjustable CDMA GSM 3G 4G WIFI Frequency Blocker

Date:2019-11-19

This product is good, really useful, even more, and the communication with this company has always been very good, I would recommend this place and will buy it again in the future.

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Powerful All Mobile GPS Blocker GSM 3G 4G LTE WIFI Frequency Jammers

Date:2019-11-28

The product works as described and I am very happy with it.

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Latest 10 Bands Desktop Powerful GSM 3G 4G 5G Wifi Jammer

Date:2019-12-10

The desktop jammer provided by the seller is of good quality and can effectively block the above frequencies. I like it very much.

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Powerful Portable WiFi GPS 2G 3G 4G Jammers

Date:2020-01-08

I found that the jamming range can reach 20 meters. For me, it is enough to stop other people's mobile phones, very good product.

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8 Bands Armband Portable 2G 3G 4G WIFI 2.4G 5.8G GPS Jammers

Date:2019-12-21

From my purchase to the present, it has worked well and has a very wide coverage in some frequency bands (especially GPS).

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Portable GPS WIFI GSM 3G 4G Signal Jammers

Date:2019-10-28

According to the advertisement, a good mobile phone jammer works well. I bought one and used it for half a month, and it performed well!

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Latest Desktop Powerful WiFi GPS 2G 3G 4G 5G Jammers

Date:2019-12-05

This is a very good 5G jammer. I put my newly bought mobile phone there. There is no signal, which is very practical.

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Handheld CDMA GSM 3G 4G GPS WIFI Jammer

Date:2019-11-20

So far, its operation is really very good, I hope it will be as reliable as it is now !

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Adjustable Desktop 2G 3G 4G 5G GPS Wifi Signal Jammer

Date:2020-01-06

I bought it three months ago and put it in the office, the shielding effect is very satisfactory.

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Multiband Powerful GSM 3G 4G GPS WIFI Bluetooth Jammers

Date:2019-12-18

Very good product. It works great, the colors look nice and cool, I love it!

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Military 2G 3G 4G 433Mhz 315Mhz WiFi GPS LOJACK Signal Jammer

Date:2019-10-24

The shielding distance and jamming function of this high-performance desktop jammer is very strong, I really like this 12 antenna jammer !

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