This is an external antenna type examination room used to interfere with phone jammers. Mobile cell phone jammer Bluetooth deterrents are mainly used in laboratories, prisons, gas stations, cell phone bombs.

In the face of this technological age, the electronic world is dazzling us, mobile phone jammers are really worth our trust, to prevent the progress of this information age?

In the face of numerous signal jammers, what choice should we make and which aspects should we consider?

The mobile phone jammer mentioned on the Internet can only be used at home or indoors. I wonder if it can work effectively in the car?

Many high-tech companies attach great importance to information security, and at the same time install cell phone jammers in important rooms to leak house information.

I have bought a mobile phone jammer before, but there has been a spread of car surveillance on the Internet recently. I wonder if a mobile phone jammer can block GPS signals?

I bought a mobile phone jammer from the Internet, and it doesn’t tell me where to install it to maximize its value?

We buy many things and don’t know how to do a maintenance. Who can tell me what mobile jammers need to pay attention to?

The installation height of the mobile phone jammer and the irregular installation of the antenna will cause its shielding effect?

Many people seriously doubt that mobile phone jammers can completely interrupt the signal?

Hello everyone! Everyone knows that there are a lot of 5G smartphones on display recently, so I want to know how to block their 5G communication signal?

Hello everyone! I want to know whether it is possible to block not only the signal of mobile phones or smartphones, but also the signals of other communication devices and wireless devices?

Hi, everybody! What bothers me is one thing: Is it possible to somehow block the signal of the wireless LAN network in the area around me? I wonder if the cell phone jammer I bought before can stop it?

Hello everyone! I know that many different things can be blocked, so it is interesting to me-is it possible to block the signal from the car remote control?

Hi, everybody! Sometimes it is difficult for me to compare the selected types of signal jammers, so I want to know how to perform this operation correctly to choose a suitable mobile phone jammer?

Hello everyone! For me, the answer to this question is very important, because my health and the health of my family are very important to me?

Hello everyone! I don’t know much about cell phone jammers, so I want to know how they work-do they block one frequency band at the same time or rarely block several frequency bands?

Hi, everybody! I want to know exactly the heat dissipation of different mobile phone jammers?

Hello everyone! At certain moments in our lives, you need to use different signal jammers at different times, so I want to know how long they can work?

Hello everyone! I want to know how to provide signal jammers and what exact mobile phone jammers are available in the market?

Hi, everybody! I restricted the work network of employees through software, but they continued to use the Internet excessively, but there was no WiFi network in the building. How did they do it, how can I stop it?

Recently I discovered that there is a device similar to a tracker under my car. I don’t know if someone is really monitoring me. GPS jammers can prevent this from happening?

Hi, everybody! I often do all kinds of different things on my laptop, from work to entertainment. But recently I read the news that malicious elements invaded your laptop via WiFi connection. Can I avoid it?

My daughter, who just got his driver's license before, is worried that he always makes calls while driving. I don't know if cell phone jammers can really block the phone signal.

Hello everyone! Recently, my daughter often stays up late to play with her mobile phone. It is deeply saddening to see her addicted to her mobile phone. Is there a cure that will help?

Hello there! I have a client school and asked if it is possible to set up a system so that the entire school (internal) cannot use mobile phones. They have posted signs of mobile phones that are not allowed in school facilities, but neither students nor faculty and staff have complied with it! Therefore, the board requested the use of ".. cell phone jammers.." to prevent the use of all batteries in the building.

Different jammers need to be used in different environments, so how long do you know specifically about their working hours?

Hello everyone! Some people may think that this is not very important, the mobile phone jammer has an indicator light? What is the difference between working and not working?

Hi, everybody! The structure of various devices and the components used are very interesting to me. Can someone tell me the structure of the mobile jammer?

Hello everyone! I have one necessary thing to do-this thing is to block the internet connection in the surrounding area. How can I do this in a reliable way?

Why does my mobile phone have no signal every time I go to the gas station? What is it that shields my signal?

Mobile phone ringtones are a very annoying problem in our family. It affects people’s rest and distracts children. I need a mobile phone jammer to block them at a specific time.

GPS has brought us many benefits, but I cannot bear the disadvantages. GPS trackers are easy to track, which is also a very troublesome thing.

I read a report before. It is said that if the mobile phone turns off the GPS, it will be tracked by others. In this case, can we use a GPS jammer to completely shield it?

With the development of 5g, 5g signals are used in many fields, which is the mainstream of scientific and technological development. Will 5G jammers become popular in the future?

I know that GPS trackers can track me. Not only that, our mobile phones may also be tracked. So, what good equipment can help me get rid of the trouble of mobile tracking?

Recently, I feel that my mobile phone has some strange activities. I always open some software by myself, most of which are positioning software. I doubt if I have been monitored. I can use a mobile jammer to stop them?

Hello everyone! I want to know, is it possible to use a wifi jammer to block the wireless mouse? I want to control the mouse of my company. Their faces must be beautiful

Sometimes, my children's practices are really unbearable and do not do well, and I try to prohibit the use of their PCs, laptops and the Internet. But I found out that my son was on Facebook while under house arrest. I doubt if he is connected to my neighbor’s wifi network

Hello everyone! Does Google use our WiFi connection to monitor us, is this true? If so, then I want to have something that can protect me from it. Is there something similar?

When I arrived at the exam school recently, the signal seemed to be turned off all of a sudden. I wonder if there is a cell phone detector. How can I prevent him from blocking the cell phone signal?

Mobile police jammer are designed for mobile phones. First, you have to understand their working principle to know how to overcome mobile phone jammers.

Recently, I have been thinking about the different signal frequency bands in each country, so if I use mobile phones in other countries, can I still be blocked by mobile blocker?

Is there a setting that prevents the mobile phone from being affected and controlled by mobile cell phone signal detector device?

Recently, many people feel that the mobile phone signal is poor at night, and it feels like it was interrupted by others. I personally feel that it is a bit like a trace of a mobile phone jammer, sohow to manage cell phones in the classroom? Who invented the mobile phone jamme

Has anyone been known to have successfully cracked this sophisticated instrument, a mobile radar jamer?

Can a few small permanent magnets with strong magnetic force be placed next to the mobile phone grabber?

On the Internet, mobile 4g jammer india shield their own signals, so is there any good aspect of mobile phone jammers for people's lives?

Usually when we are in a big theater, our mobile phone signal is very poor. I suspect that someone used a how mobile phone detector works to shield our signal.

The process of making a cell phone detector is very complicated, but I want to know if there is any way to unblock it.

Hello, I just bought a GPS jammer. I wonder if the device can be controlled remotely?

Does anyone know what the jammer WiFi signal is? what's the effect? Can you tell me do you know?

I want a powerful WiFi jammer, it will not affect my mobile signal, you know?

Is it legal to use cell phone jammers at gas stations?

Many students are now using mobile phones to find answers on the Internet. This not only protects the students, but is also unfair. Can they use cell phone jammers to block cell phone signals?

The recent cell phone jammers are particularly popular, where can they be used?

Recently, I was fascinated by looking at my phone. I often watch TV programs day and night. I can't control myself. Do I have a jammer to prevent me from seeing the phone?

I have heard a lot of information about Jammer recently. I wonder if there is any waterproof Jammer here?

GPS tracking is now widely used in schools, shopping malls, supermarkets, government departments and other public places. It can bring many benefits to our daily lives. At the same time, the downside is that many people claim to use GPS tracking devices to get to know other people. Confidentiality or privacy so that they can easily achieve their malicious goals. In this case, can I use a GPS jammer to protect my privacy?

Is there any equipment that can help me solve this problem?

I am an electronics enthusiast, and I especially like to study something by myself. Mobile jammers are one of my recent interests. I would like to ask whether it is troublesome to make shielding devices.

Recently, the problem of children's sexual intercourse that appeared on the Internet has attracted people's attention. I also think there is any way to prevent children from having sex too early. I don't know that mobile phone jammers can cut off the connection between them?

Hello there! I am a school teacher, and I hate students cheating in exams and being distracted during class. Can I use cell phone jammers in the classroom?

Some jammers are always reported on the Internet, but it has never been said how these devices are stopped working?

Hello everyone! Can someone tell me about using WiFi jammers? Can I use it for security purposes to protect my personal information?

Hi! My name is Jimmy, I want to ask if anyone knows how to block incoming calls? Is it difficult? What do I need to own or use for this?

Recently, I read about the GPS positioning system of my mobile phone, which can be used to track me. Is there any way to block this GPS on my phone?

Hi, everybody! I'm curious, how much is a cool mobile jammer worth? I mean what is the normal price of high-quality products in signal jammers?

I have seen a lot of signal jammers on the Internet and they look very good. I have been choosing to buy it hard. Can you recommend me a multi-band WiFi signal jammer for home desktop computers suitable for home use?

Many people are now worried that their wristbands will expose their location. They use GPS jammers to block them. I don't know how effective it is?

Hello there! I heard that it is possible to use the OTG cable to hack the onboard computer, but now I want to know if the same operation can be performed remotely? Is my car controlled via Bluetooth and Wi-Fi?

Hello, I am not very familiar with GPS jammer technology, but I am sure that it can shield long-distance GPS signals. I want to know how this is possible and is there a way to protect myself from this kind of harm?

Hello there! It was seen in recent automotive technology newspapers that the Megamos encryption algorithm for encrypted passwords is transmitted between the car anti-theft gadgets and the car itself. Is this really dangerous, because if I remember correctly, it will be used in luxury cars such as Porsche, Lamborghini and Bentley

I work in a place where the first 40 music is constantly playing at high volume. If I can find a way to disable them and silence myself, it will increase my work day by 100 times!

Is it possible to plug street lights or lights in warehouses or front porches? This is strange, because usually when I walk by street lights or drive by, they flicker and dim, and then light up again for about 20 feet when I like. Can this smart light interfere?

I often use mobile banking, and recently I discovered that my bank has released a mobile banking application on Google Play. I want to know is it safe to use these applications? I am not a real experienced user, and I am worried that someone may hack into my account. What can you tell me?

Hello, I have read about the new .apk vulnerability in Android OS, and I want to learn more. Is there a chance that a patch can solve this problem, and what measures should be taken to avoid this problem?

Hi, I have read the news about military-grade drones that will be used to track American personnel, and I want to know, is there any way to hide or disable surveillance? I did not do anything illegal, I just want to be safe, and not be under surveillance all the time!

Hello, I want to know more about this Bunny project. My company uses wireless networks to organize work processes and allows our people to use their own mobile devices, such as smartphones or tablets. This is why it is really cool to have something that protects traffic.

Hi, I recently stumbled upon a new camjacking technology that uses your own browser and webcam to monitor you. I want to protect myself, but I don't want to turn off the camera because I often need it. Is there any way to achieve it?

Hi, I heard that some states in the United States are adopting new remote control electronic license plates. I think this may pose a danger to my privacy, and want to know what information they can share and how to stop them. Any help would be greatly appreciated!

Hello there! I need a privacy protection tool to ensure that no one can monitor me with the help of my smartphone. I need to make sure that I cannot track and remotely control my gadgets. The eavesdropping must be the same, and all data stored there must be kept safe. What signal jammer or "carry-on" product would you recommend?

Hi, hello, I recently noticed some information on the Internet, which indicates that the Android operating system uses a weaker SSL version, which runs based on the RC4 algorithm, not the well-known reliable SHA1, so I want to know if this Danger?

Hi, I suspect that my phone is being monitored by the NSA. Is there any way to avoid it? I can't stop using the smartphone because I need it to work, and for the same reason, it contains some sensitive information. I want to make sure that all data is kept safe.

Hi, I heard that such tracking is possible, but I don't know how it is done, and I also want to know if the NSA has the necessary resources to track people in this way. If all this is true, then I will need to provide some advice on how to hide this type of tracking. If the government tries to undermine my privacy, I will protect my rights.

Hi! I heard that the recent G20 summit in Russia brought a new spy. They said that Russia made some gifts to the participants, such as USB hubs and flash drives. The German Secret Service inspected these devices and found that they had some hardware monitoring modules installed. Such gadgets are more frequent. They are all from China. How to protect yourself from those spyware modules.

Hi, I need some help! Recently, I lost my account on Facebook and someone hacked it, but the problem is that I never left the account data on any site, I use an Android smartphone. By contacting the technical support staff, I have restored my account. In order to prevent this kind of thing from happening again, should I buy a hand jammer?

Hi, I want to know how the Tile tool works, I didn't get it from the description. Tile seems to be a very useful gadget, but it is very good to make sure it is safe.

Hi, I have seen that the latest smart TV can collect a large number of user browsing habits about users and share them with companies and advertisers. I want to know if it is real, and if it is, how can I stop it?

Hi! I want to know if there is a way to improve the working range of the jammer. I need to block the Wi-Fi network in a nearby building, the problem is that it is about 150-170 feet away. Please help me choose the right equipment, or maybe there is a way to increase the interference radius of some of them. Many things in advance!

Hello, I want to buy a handheld jammer and put it on my husband's car. I feel that driving and playing with a mobile phone is particularly dangerous.

I want a jammer that can shield a variety of signals, or a signal that can be shielded separately, preferably a hand-held one. Any good recommendations?

Every time we refuel the car, there is always no signal from the mobile phone. It may be that jammers are installed at the gas station for safety reasons.

Many times, when we take exams, our mobile phone signal is always empty. Is the school installed a mobile phone jammer?

I have recently been particularly interested in electronic device handheld mobile phone jammers. How does it work and where is it generally used?

Recently, I was fascinated by looking at my mobile phone. I often watch TV programs day and night. I cannot control myself. Is there a hand-held mobile phone jammer to prevent me from seeing the phone?

Many electronic devices can be used underwater. I wonder if there are jammers that can work underwater?

GPS tracking is now widely used in schools, shopping malls, supermarkets, government departments and other public places. It can bring many benefits to our daily lives. At the same time, it also makes our private lives transparent, which I dislike very much. I want to buy a GPS jammer to refuse surveillance.

My house is still on the phone in the middle of the night, it is very noisy and it affects my rest. Can a cell phone jammer eliminate the noise?

With the development and popularization of wifi networks, we are a ubiquitous wifi network. People cannot live without wifi. It has been connected to Internet media. Our own wifi may be hacked, let alone public wifi.

signal jammer are common sense that interferes with signals. I know that with the development of signal jammers, they interfere with various signals. They are divided into several types of jammers. The essence of things produced has its uses, and it is widely used sooner or later.

What is the security of mobile devices that dominate the market with Android phones?

Radiation is a common phenomenon, so how can we reduce the damage of radiation to the body?

The difference in mobile phone signal is a problem we have been complaining about. Why is my phone so bad? It could be signal propagation or more weather. Of course, it may be blocked by mobile phone signal jammers, which makes our mobile phone no signal.

The signal jammer is the bane of the signal. It generates interference signals with the same frequency through waves. It is not easy to make the signal jammer circuit. As long as the circuit diagram of the signal portable jammer is designed, and then connected according to the circuit diagram,

With the development of science and technology, mobile phones have become our important tools. This is an important device for us to connect with people and enjoy leisure time. Electrons are radiation. How much depends on the degree of radiation.

With the development of technology, there are many signals in our lives. What makes you need a jammer? You need this kind of jammer device, it will interfere with cell phone signal and GPS signal. With the development of jammers, jammers-buy store goods can meet your requirements.

If you are being tracked, don’t panic. If you are tracked by a GPS tracker, you can avoid tracking. You can use GPS signal jammers to prevent it, so your whereabouts are well protected. I was also followed, but I found a way to track it in time and took the best solution.

With the development of mobile smart devices, wifi networks covering streets have become an important part of our lives. With wifi, people have almost no data on the Internet. Since wifi networks do not require money, they use mobile phones and the Internet speed is faster.

What is the specific connection between the fretting interference technology and the interference between jammers?

I really want a small jammer that can block the microphone, which can cause a bad network situation for calls that I don't want to answer.

It is said that the United States spends a lot of money on the communication jammer, and then developed a very powerful terrestrial communication jammer, and it has completed the most basic tests.

Now in a society where technology is more developed, the endless stream of monitoring equipment is really worrying about your privacy, and I don’t know what jammers can shield all monitoring equipment.

Students always play mobile phones during class, and teachers are helpless, but I heard that the school will install jammers, which has been strongly supported by parents and teachers.

Recently, I saw on the Internet that the free Wi-Fi hotspots around us are not secure and sometimes maliciously steal our personal information. How do I keep myself safe?

Hello friends, I want to know if there is a way to improve the working range of the wifi jammer. I have to stop the Wi-Fi network in the adjacent building and they always make noise to me. I can't stand it. I want to buy an interference device. The problem is that it is about 150 to 170 feet. Help me choose the right device, or maybe there is a way to increase the interference radius of some of them. Do a lot in advance!

Do you know the type of jammer?

Hi, Do you know the rules of jammers?

Sometimes when I'm playing a video game, they flash and go out, and then restart after a while. More than 20 feet. Is this jammer's interference?

My father installed Lowe’s smart home system a couple of weeks ago. That’s a cool gadget but now Verizon added a USB modem that is compatible with our smart home system. Now it can be monitored remotely, over the internet. I need to block that, because we can’t hang out with my boyfriend, while my dad is out

Hi there, I’ve installed this Lockitron smart lock recently and I need to know is there a way to block it while I’m home? I fear that someone may try to hack it, using Android NFC exploit

Hi guys, I really need to know if it is ok to use a Wi-Drive, will my data be safe there? Or someone may use it against me?

Hi, is it possible to block that Sphero device? I never thought it is dangerous, but sometimes kids just play too much with it. Many thanks in advance

Hi, folks! I live in London and recently I’ve heard some rumours about that our cabs will be equipped with free Wi-Fi hotspots, how can I make sure I’m safe?

I’m a truck driver and I work with the delivery for the last 5 years. And recently my company has installed a GPS tracking device somewhere in my truck. I don’t know for sure, but I suppose that they use that company’s product.

Hi guys! Tell me please about this thing: is it possible to use two blockers in a building? If so, how will they work together? Will they interfere badly?

Hello guys! I am thinking about purchasing a jammer and the top concern here is to hide it nice. Is there any kind of jammer that is really easy to hide?

Hi people! Recently I've read that soon cell phones will be allowed to use on planes. I don't know how it will work but is it possible to use jammers there?

Hello people! I have read about the piercing power of the jammers and I have a new question on the topic: how signal jammer interacts with metal surfaces?

Hola amigos! I want to ask you this: is there any real practical usage for the multi-frequency jammer to be able to use its full potential at the max power?

Hello guys! I have a question like this: is it hard or simple to locate any kind of signal jammer when it works and how it may be done anyway? Thank you

Hi folks! It is clear for me that jamming range would be max in the field but what about buildings, urban area or cars? Does this signal pierce through it?

Hello everyone! I am living thanks to the electrical conduction system of the heart, so it is very important for me to know: can signal jammer influence it?

Hi everyone! I know that cell phone jammers can stop cell phone signals in a certain radius. Is it true that those signal jammers are being used in prisons?

Hi guys! Imagine this: I am buying cell phone jammer and after some time it breaks. Assume that warranty has passed. Where can I have repairs for my jammer?

Hi everybody! I have seen many signal jammers and noticed that they may have one, two, three and even five antennas. Does their quantity affects something?

Hello everyone! I want to use cell phone jammer but afraid of possible side effects. Are there any of them? You know, like mobile phone radiation or alike?

Hi there! Since signal jammers are not for house usage only but may be also used as portable devices, I want to know: what conditions are perfect for them?

I want to know the bluetooth mouse can signal interference? If can interfere with, I need to do?

With radio technology is more and more developed, the spy tools also do more and more small. They all come from China, that's why I'd like to know, how to protect myself from those spying modules.

I have a neighbour, in this 2 years he placed 2 video cameras on his Doors and looking on mine on a distance of aproximative.

I have inquired about this before but I am still confused about which jammer to buy.

Hello, I’ve heard hat some FM modulators can jam the GPS signals, how can it be? Does this mean that it is more good than interference device a way? Want to know the price varies widely between them.

I have found out that my boss is tracking the car I am using, I don't like that I don't even want to touch the GPS tracker device.

I've read online that many people are using this amazing gadget.

Hi, everyone. I wonder where I can buy a cheap jammer in Australia?

We often see information about the GPS jammers in the Internet. So what's the function of the device?

5G era is coming, I heard 5G jammers is born. What is 5G jammers?

Sometimes, due to confidentiality requirements, we need to block cell phone signals. So, how to kill cell phone signals?

Because GPS tracking devices are so easy to buy, the safety of women is increasingly difficult to protect. More and more women face the threat of being tracked. So, how to protect woman?

Is there such a device? If I want to jam both the WiFi signal and the cell phone signal.

Facing increasing GPS tracking, We have to use special anti-gps tracking devices to protect our privacy. So what devices should be used to block GPS signals in cars?

What is wireless jammer? I heard about the device online, but I still don't know anything about it

Tracking and anti-tracking, this is an inevitable topic in the United States. With GPS technology so advanced today, it's not uncommon to be tracked by GPS. But we need to know how to jam GPS tracking systems to protect your privacy

Although there are more and more jamming devices in the United States, but what kind of jamming devices are the most popular? What cell phone blocker is the most popular?

When your library is disturbed. When you put up with people talking loudly on the phone in the tram. That's why you want to buy jamming devices. But how to buy a mobile jamming device in the United States? Doesn't that seem easy?

Considering the range of jamming, what is the best portable cell phone jammer? I can't carry heavy equipment because I need to take it to the tram

Where can I buy a wifi jammer in America? I found a lot of stores in my city that didn't sell

Is there a way to block both radio and WiFi signals on your phone? We need to ban these signals when we're having a secret meeting. Mainly to prevent eavesdropping

Can jamming the WiFi of global bandwidth users? My neighbor's WiFi has seriously affected my life. I've heard that WiFi signals are bad for people. So I broke down my router at home. But I found that the neighbor's WiFi still affected me

It's really common in the United States to be tracked. My friend was tracked by his wife not long ago. His wife installed a GPS tracker on his car. It's very scary. That means there will be no privacy. So I want to know how to stop being tracked by GPS

When you're woken up late at night or early in the morning by a ringing phone, you're probably as angry as I am. Since my phone doesn't turn off when I sleep, so I am often woken up by unimportant calls. So now I want to block my cell phone while I sleep

Recently, I found out that children connect to nearby WIFI every night and use their mobile phones until late at night. I can't turn off the WIFI. So how can I block these WiFi signals?

I don't know why, my neighbor's WiFi always affects me. So his influence, I can't access my own WIFI. So, I was wondering, can I jam his WIFI with a WIFI jammer?

Jamming device is a very convenient device, But the only thing that's not convenient is that you can't control it remotely. Is there any way I can remotely control this device at home?

Where can buy high-power mobile jamming devices? I need a jamming device that can jam 80 meters. But I searched a lot of stores and couldn't find them

Tracking devices are easy to buy in the United States. So it's possible for anyone to install a GPS tracker on your car. So is there any way to block the GPS tracking signal?

I learned about wifi jamming devices on the Internet, and I'm going to buy one. But I don't know what's working principle of this device. Is it harmful to the human?

As mobile phones become more convenient, people are also increasingly dependent on mobile phones. But many people use mobile phones in the workplace. So, in order to improve work efficiency, I'd like to know how to block cell phone signals

Although we all know it's very dangerous to use a cell phone while driving. But that doesn't stop drivers from using it unconsciously. There are hundreds of car accidents every year in the United States caused by the use of mobile phones while driving. So, I was wondering if there was any device that could block cell phone signals while driving?

I can't stand people talking on the phone in public any more. Every day I can hear all kinds of loud calls. Like a woman talking about her cosmetics. Or a lady talking about her family's menu tonight. So I want to know how to block cell phone signals? I need to be quiet

It is said that privacy in the United States is increasingly difficult to protect. My neighbor's car was recently fitted with a GPS tracker by his wife, who discovered the truth about his infidelity. I think it's very scary, it's completely private, so I wonder if I can buy a device that can block GPS signals. If can buy it, where I you buy it?

It is said that GPS tracking devices are now easily available in the United States to track individuals. I am very worried about this. I don't know when I will be followed by others. So I want to know how to block the GPS tracking of the vehicle

I've heard that GPS trackers are now easily available in the United States, and there are often people who do it illegally. So I was very worried about my privacy and whereabouts being leaked. So I was very worried about my privacy and whereabouts being leaked. So, I want to know what frequency civil GPS generally USES, I want to block such signals, to protect their own security

I learned on the Internet that there is something called a cell phone jammer. I am very interested in this kind of products and would like to know can I buy this kind of equipment in US.

I've heard that the security of smart devices is getting worse recently. Many hackers can use WIFI and bluetooth signals to break into smart devices and steal personal data and bank accounts. So, I want to know how to block the bluetooth signal to make sure my smart device is safe.

I'm a techer. Although I know that using mobile phones can help students learn more knowledge. But I still can't stand it when students use mobile phones to chat or surf social software in class. I've heard that there's a device called a cell phone signal jammer that can jam cell phone signals. Can I buy and use it?

Although I've heard about cell phone signal jammers for a long time, and this device has been mentioned more and more in recent years. But I don't know what the uses of such devices is.

Although drones are one of the hottest topics at the moment, they have brought us a lot of convenience. However, due to the misuse of drones, they are often used for some illegal and criminal activities. Our privacy is also at stake, and there are often drones with cameras passing through our yard. So I wonder that can I jam a drone signal?