Personal Cell Phone Signal Blocker Device

Pros:

It is small. It has very light weight. Good colour - black is suitable for such kind of things. It is easy to mount antennas. It does what it is suppose to do - it blockes the cell phone signals (both 3g and gsm).

Cons:

It has not very wide radius of its effect. You have to be in the same room with the device you want to block signal on. Sometimes you have to charge it (not very quickly, by the way)- it is not rechargable.

Other Thoughts:

I don't know the main use of the device. I have it just for fun to joke with my friends talking on cell phone.

Bottomline:

If you think you need it - buy it because it really works.

Pros:

I use it someimes for fun, or if someone annoys me talking too loud ar too long on the phone - I just block the connection - and the person hears the silence. Works very fast, and blocks all signals quick. It also blocks local phones on my work station at home (wireless). Really easy of use! Very small, taking into consideration the good effect

Cons:

The radius of working is not big. You should be at the same room, or the walls should be really thin.

Other Thoughts:

Don't know really useful reasons too buy it - for me it's merely a fun toy.

Bottomline:

If you need it or you want to joke - you should buy it because it really works.

Pros:

Made of metal
Easy to operate- you have to be a moron to screw this up!
The device turns off when done charging.
Battery life is really really good!

Cons:

Antennas broke after awhile. I dropped it so it's my fault. Besides that, no real problems.

Other Thoughts:

I loved how effective this unit was against older cell phones. The range was rather short though. I'd say less than 10 feet was the effective range. As I said in the sentence above about the killing of older phones, the newer ones with the 3G or 4G had more difficulty killing that. It works not only with a cell signal but it kills Wi-Fi and Bluetooth likewise.

Bottomline:

A very good device that will not let you down!

Pros:

Works very fast, and blocks all signals quick. It also blocks local phones on my work station (wireless, but not on GSM or 3G).
Really easy of use! Very small, according to the good effect.

Cons:

Becomes a little hot when turned on, and placed in my inner pocket. Would have been better with larger range, but i can't complain according to the price!

Other Thoughts:

This is a really fun toy and a prank player. Works a lot better than i thought. Can be useful a lot of places, and really does the job of blocking signals good.

Bottomline:

If you not are shure if you are going to buy this, i will absolutely recommend you to do so. Useful and nice for pranks.

Pros:

It blocks the phone signal (3g and gsm)
It feels sturdy and seems like a good build quality
It barely weighs anything
It's very small

Cons:

Can take up to a minute for my phone (nexus one) to loose signal. Might by my phone's refresh rate, not shure
Didn't block signal when at a friends house. He lives quite close to a signal mast.
It takes quite a long time to charge (a couple of hours)

Other Thoughts:

It would be nice if it also came with a european plug or an USB charger

Bottomline:

It's a very funny gadget/toy to have. You can make some good pranks with it. The size and weight makes it even easier.
If you want a fun toy that not many people have, buy it :D

Pros:

Product of very good quality, largely taking into account the affordable price.
It can be very useful. To me it was.
when I receive a customer, one of the things that bothers me is when the customer picks up the phone and puts me to wait for him. I usually solve the situation with the press of a button ... the on and off the signal blocker.
It has a good range and it is more than enough to the use I give it.
It has a good building and a suitable size.

Cons:

I found no fault in particular.

Other Thoughts:

it is a good friend to those who receive public over the counter.

Bottomline:

Are a civil servant?
You work getting the public over the counter?
You will like it!

Pros:

This is a fun little phone blocker. It works as expected on blocking the GSM signals with 5-10meters for me. It seems well built for the price and has nice feeling to it.

Cons:

3G does not work at all i think the output power is not strong enough and battery life is a little over 3hours on a full charge but not a huge con really. The antennas are not fragile but if u put it in your jeans pocket it can bend easy so better keep it in jacket instead.

Other Thoughts:

Its fun ive used it in busses, cafeterias etc and it seems it works as it should but sometimes it can not block but thats not blockers fault.

Bottomline:

Get one the price is very cheap cant get better then this but use it with caution u dont wanna get attention since it looks a bit suspicious.

Pros:

- Good build quality
- Works well
- Blocks signal effectively when you're away from a cell tower
- Decent Battery life

Cons:

- I haven't personally broken it however I'm worried that the antennas will snap off
- As expected the battery life is not great however not much can be expected for a such low price
- Doesn't work too well if you're in a city or near a cell tower, as it can't overpower the near cell towers

Bottomline:

Overall it is good for the price and I would recommend it to those who are looking for a portable cell phone jammer. However don't expect it to work great if you're near a cell tower or in the city, if you want something for that I would recommend the more expensive version which plugs into the wall.

Pros:

Got this and it was even charged when i opened it, i tryied in on my phones GSM and within 30 seconds they both showed 0 bars signal and SOS mode so it does indeed work. The range seems to be about 5meter or so indoors and sometimes it works and sometimes it takes longer. Im gonna for sure use this when i go on trains, busses, clubs etc as i cant stand people always must talk silly in their phones.

Cons:

It does not work on 3G at all, i think the power is not strong enough but its weird to have antenna and spec for it but it doesnt work, even if i put it next to phone.. nothing.

Other Thoughts:

There is no way to tell how much battery is left, and according to others it drains battery slowly and within a week it can be empty so always leave it charged at nights. The range could have been a little better but for this kind of money you still can annoy alot if you are close enough.

Bottomline:

Grab it for some Gsm jamming fun.

Pros:

Simple, fun and effective! Works exactly as described. I think the antenna's are fine, they're not THAT flimsy! The build quality is pretty good too.

Cons:

Range isn't fantastic and it hates working outdoors. Battery life is ok, but could be better.

Other Thoughts:

Watching TV the other night and it blocked the TV signal on the weaker channels!! Sometimes I've noticed peoples phone signal still displays it is there on the phone, but if they try and call someone it won't connect.

Bottomline:

Definitely get one! Even for the laughs! But use it responsibly.

Pros:

With this signalblocker you can have a lot of fun. It's easy to use! It's lightweighted and easy to carry in a jacket's innerpocket. It blocks all signal within 5-10 meters.

Cons:

One con is the battery that runs out a little faster then i had hoped for, but it's still not to bad. I would also prefer is it's blockingrange had been a little longer.

Other Thoughts:

This item is perfect to use on a buss, train or even at a resturant. I realy hate the loudspreaking people that allways are sitting and talking in their cellphone... With this signalblocker I finaly got my sweet revenge! :)

Bottomline:

For it's size and price, it's a good deal!!! I realy recommand this signalblocker... Buy one an get your revenge or just have a lot of fun!

Pros:

Works exactly as advertised. Plugged in antennas, turned it on and watched the bars disappear on our cells. I got about 30 feet away before the bars came back on my 3G phone.

Cons:

None, though the instructions could be a little clearer.

Other Thoughts:

I saw this on DE shortly after we took an Amtrak train trip from Philly to Raleigh and got no rest because of constant inane urban chatters on their phones.
We also plan to use it when our nephews come to visit, they bring their phones to the dining table.

Bottomline:

Good value, convenient size and it works.

Pros:

Works well only at isolated area, depending on the opponent signal strength but in average it jammed the signal within 15-60 seconds.
The product itself look very rugged, with a strong casing and an easy button to activate it.

Cons:

It shows the weaknesses when we try to operate it at open location or in a running vehicle.
The antenna looks ugly and too obvious to hide. Also the green activated LED's is far from hiding.
No further or detail instruction, especially on battery lifetime and how should it charge's.

Bottomline:

i may buy another of it, if only i can get better jamming strength and less shown antenna [preferable with internal antenna]

Pros:

Not particularly large, which allows to turn around with him everywhere.
Once activation takes about 2 seconds until he hangs up the integration environment of something like 10 feet.
His charge is enough for a very long time.
Fast delivery.

Cons:

The only drawback is that you can not use the device in the open.
It can be used only safe place, for example:
Bus, a job, train, house and more ...

Other Thoughts:

I bought the machine about three weeks ago, since I got I'm just happy.
The device is not great, allowing me to walk around with him everywhere.
He makes me so much pleasure as it disconnects the call for people inside, it's so funny is worth every cent.

Bottomline:

It is very important to be careful using it in public places like a hospital or even a super market there is a terrorist in the place security

Pros:

-Very easy to use, just pop on the antennas and push on. Only one button.
-Car charger, wall charger
-LED light notify of full charge
-Works flawlessly, be very careful where you use this.

Cons:

-With the antennas on, it makes it bulky to carry.
-The push button could be made more sturdy.
-Button easy to push, may activate when in your pocket (hasn't though)
-Risk of going to jail

Other Thoughts:

A cool device to show off and maybe use in a movie theatre setting. But be careful of where you use it, here in USA strict laws prohibit use of these. Its Jail time or high penalties $$$ if caught.

Bottomline:

Works as advertised, its smaller than it appears on the pictures. Worth the buy, but $25 is about the max I would have paid. Would still buy again.

Pros:

lightweight
relatively small
easy to use
it actually works

Cons:

like most electronics, don't drop it
wish the antennas were hidden, they draw attention

Other Thoughts:

i didn't expect a whole lot, and i took it straight from the box to the grocery store (it came partially charged). I had it in a stun gun holster under my long t-shirt, and when i saw someone on a cell phone, went towards them and pretended to look at food.
First, it's not a quick kill if they're already talking. You have to stand near them for awhile. The time depends on the carrier it appears.
but, I did knock someone out of their blab,blab,blab chatter after about 20 seconds near them - she started going "hello?, hello? you there?" it's good to be king !
now where this thing shines is when they try to make a call. i turned it on, then walked over 70 feet ! away, turned my cellphone on and got "no signal". I was standing in the middle of the street where the signal is strong. this thing works !
i tried it on 2 carriers, net10 (i think they use at&t), and t-mobile.
so if you're going to a movie theatre, leave it on. that'll stop people in the whole theatre (unless it's a huge cinema) from getting a signal. you may hear some cursing though :)

Bottomline:

took about a month to get, but it's worth the wait. can't wait to try it out in the shopping malls and restaurants around the holidays ! like smoking, if you can keep it to yourself and your private 3 foot circle around you, fine. but i don't want to hear you blabbing on like a 5th grader about nothing and giving me a headache. the king has warned you !

Pros:

This unit works right out of the box in the USA. It doesn't block all phones, but most. The perfect gadget in the supermarket or mall. I can get as much as 10 meters indoors. I've bought 3 other models and this works the best

Cons:

Antenna's and their solder connections are flimsly and poor, but with a little care and soldering skills it is easily fixable. The battery will overcharge and wear out but cheap replacements are available

Other Thoughts:

Buy two The price cannot be beat and a charged spare is nice too.

Bottomline:

This one works better for mr than more expensive units.

Pros:

It actually works! It's small enough to fit in a pocket. I always have mine in my jacket chest pocket, and turn it on/off by casually pushing the button through the material.
You only have to turn it on for a relatively short time, so one battery charge will last quite a while.

Cons:

Sometimes, depending on the signal strength going to the 'enemy' mobile phone, it can take up to 30 seconds for it to cut them off, so it's not an instant 'zap'. Having said that, sometimes it is instant.
Again, depending on signal strength to the mobiles, the range will drop, but believe me, it's perfect for the range required in a train carriage or bus. No other cons. It's brilliant.

Other Thoughts:

I was skeptical at first, and wasn't expecting it work but was amazingly surprised and happy when I 'zapped' my first blabber-month idiot on the train home!

It is ideal for dealing with inconsiderate loud-mouth people who just talk rubbish on the commute home from work. That's all I got it for, and I have it with me in my pocket every single day... and it's never let me down.

Bottomline:

Great stuff. I recommend it to anyone who just wants a bit of peace and quite on public transport.

Pros:

Decent range, good battery life, convenient package size. Plus, there's satisfaction at watching particularly rude people think that their cell phone service sucks...

Cons:

The antennas are physically the weak point of the device - one must be take care to ensure no dmage occurs.

Other Thoughts:

I bought five - my friends and I all make use of them. Just be sure to use your new powers for good instead of evil...

Bottomline:

Annoying people yelling into their phones at the movies, DMV, in line, or anywhere else you're stuck waiting around? $27 is a small price to pay for your sanity.

Pros:

Pretty nice actually. I still had to pay Customs fee for this product even when i got the Gift stamp, anyway. It work awesome the first 5 times you use it. The lamp that indicate its ON does not work anymore and when you shake it you can hear something bumpy inside wich i guess is not suposed. The LED recharger lamp does not always turn on when i recharge it. I have used it for one week now and i can only block the signal 1 meter away so that indicate i can block myself and the person just ahead, IF I'M LUCKY!

Cons:

First time fun, second time sucks

Other Thoughts:

I can block new phones like my iPhone 4, but tried with a Nokia 3300 and its almost impossible. It does not die, it just delay the call.

Bottomline:

I would not recommend this to further buyer untill this is fully fixed. I dont got techinal skillz, so i cant seperate the product and try fix it my own if its possible. Works once, not twice

Pros:

Small, light, cheap, full work. Very good. It works evenly with a Motorla V3. Even the 3G signal is been jamming by this dispositive.

Cons:

Nothing to say. I didn't found any cons about this dispositive.

Other Thoughts:

It cover 15m radius. Enough lenght to cover your own room or middle rooms.

Bottomline:

Perfect for a movie. So you don't get bothered by the cell calls, or anywhere you don't want to be bothered.
Nothing more to say. Get one, you don't get disapointed! But becareful if in your country is allowed to have one like this.

Pros:

Excellent! Interesting that it doesn't drop the call it just blocks it; turn it on, your audio goes dead, turn it off and you continue the same call.

Cons:

Some say that the on - off push button switch might be a little cheap. I'm of the opinion that if you take care with the device, like your cell phone, you'll have no issues at all.

Other Thoughts:

I'm using a sunblass padded pouch to hold the thing and it works great.

Bottomline:

If cell phones are an issue; movies, meetings, etc., get this! Fianlly I can stop the a-holes at the movies!

Pros:

It works at a surprisingly long range. It was blocking my samsung and motorola verizon wireless phones up to 75-100 feet outdoors with no obstructions. Inside a house 1500 sq feet, it blocked signals for the entire house. Verizon has the best coverage in area so I'm pretty impressed at the range outdoors. Metal construction is very nice. I haven't run it continuously to see the battery life but it seems to hold a charge well. When you first turn it on it takes a few seconds before your phone realizes there is no signal.

Cons:

I can tell the black paint will not last long but who cares.

Other Thoughts:

Length of time to ship was 10 days from when I placed the order. Shipping took 8 days which is pretty good.

Bottomline:

You won't be disappointed if you buy it. I'm placing an order for some more.

Pros:

Excellent price, fast shipping, rechargeable.

Cons:

Limited range, has to come through customs.

Bottomline:

Excellent unit for the price. Works very well in most situations. Great for train, bus, etc use. Ruggedly built unit makes it easy to carry, but discreet enough to be concealed. I was skeptical since this unit is so much cheaper than most but the performance at least so far is way beyond what I expected. Some of my friends are so impressed that they purchased units of their own. Overall an outstanding value. I doubt you can find a cheaper unit that actually works.

Pros:

This is an awesome little device. It has a fairly good range ~10m, but it depends on where you are using it. The battery lasts for about three hours before dying. Fits in my pocket easily.

Cons:

I have to be careful not to hit the power switch when handling it because it doesn't take much force to turn it on/off. The indicator light is not very bright, and during the day it can be hard to tell if its on or off.

Other Thoughts:

I'm using a homemade directional antenna that is made for the cdma range, and it works perfectly with this baby. Although it looks a little more suspicious waving around a directional antenna, the range makes up for it.

Bottomline:

Buy it, its cheap, it works, and its awesome.

Pros:

Brilliant for when you're on a bus or train and you need that 1 hour silence, i travel a lot and it's perfect. you can use it on buses, in classrooms and meetings. It's been given in a metal casing so it's not going to get damaged if you drop it:) It's SOOOO cheap as well! For that price it's got a good distance0f about 40 feet.

Cons:

Afetr a while the battery starts to degrade and it's not replaceable but that's not a problem becuase you can replace the whole unit!

Other Thoughts:

Great price, great size, great weight and good distance, it covers CDMA, 3G, DCS, and GSM to about the same distances. It has a battery life of 3-4 hours housrs in the first 10 months and then it starts to degrade :(

Bottomline:

Get it, It's usefulll and perfect for a lot of situations, but be careful because it's illegal in most countries so DON't get caught! It's fun to use on annoying people and you could also jam WIFI signals with it so it's GREAAAAAAAT!

Pros:

I ride a public bus every day to and from work. I am NOT in a metropolitan type city, and people have no idea what cell phone etiquette should be. For the first year, I nearly ground down a tooth. Then I found this item. It effectively shuts down 99% of obnoxious cell phone signals and eliminates attention whore conversations for the bus ride. Also works in movie theaters, concerts, restaurants, and anywhere else rude cell jerks gather and annoy.

Cons:

I've had mine almost two years, and either the battery is waning (understandable) or the on-off switch is waning (it could be built with a slightly sturdier switch). Would be great to also have an auto 'battery charged' shut off on the charger. But when handled with care, and considering that I've used it five days per week, twice per day, it has lasted very well.

Other Thoughts:

Do NOT get seen with it exposed. I found a cloth bag to wrap it in, so that it can be concealed in my shirt or coat pocket. They're not legal in the US, so don't get caught. The upside to that is that most Americans have no idea these exist, so they aren't looking for them. They just are baffled why their $500 phone doesn't have a signal.

Bottomline:

It truly is a HUGE relief to be able to enforce manners in a crowded forum with no one suspecting. This little gadget has made my bus ride much more tolerable and pleasant in the last two years. I just wish the battery had lasted longer, or was replaceable. But at this price, even replacing the unit isn't bad. I highly recommend this.

Pros:

-Stops all calls almost right away.
-Very easy to use.
-Works with almost all phones.
-Cheap!!!!!!!
-Small

Cons:

-Distance could be better.
-Antennas are kinda cheap

Other Thoughts:

I use it every time I work. I showed it off and now 3 other people want me to order them one. I jam friends phones until they get the hint to get off your phone.

Bottomline:

Love it. Fun to use at work when rude people talk on the cell phones while your trying to get an order. I jammed this one persons phone twice because she refuse to get off the phone so I kept doing it and blamed it on the building. He he

Pros:

Great deal here. It's cheap to buy and easy to use. Blocks cell usage within 30 feet to deal with the pesky cell phone users in movie theatres.

Cons:

None ; )

Other Thoughts:

Our PC government here in the USA doesn't want to offend anybody and won't allow companies to set up this technology in movie theatres. I pay $10 to see a movie not listen to people yack and text on phones. My government won't stand up for my rights, I will ; )

Bottomline:

If you want to enjoy your movie at the theatre without being disturbed by cell phone users, this is a great deal!
FYI: press release out of Palmdale, CA; there was a ganagster thug yacking on the cell and a movie goer asked him to yack outside. The gangster stabbed him in the neck from behind and the victim died. The gangster male black subject has not been located to this date.

Pros:

It is very fun to use. I tested it on buses, on trains, and from what i see, it works around a 5-6 metre radius. but that's a problem by itself. build quality wise, it is solid, i have no complains about that. and it seems to work for all networks my country is using.

Cons:

price. not exactly that cheap, but might be due to the cost price, i'm not sure. also, the radius is quite small. i was hoping for it to clear out an entire classroom, however, it seems to reduce its efficiently once i hide it in my school bag.

Other Thoughts:

The instruction manual isn't really clear about how to tweak the dials inside it. instructables.com wasn't useful too as it does not say which dials to turn, which not, and in what order.

Bottomline:

Fun to have, but beware of regulations.