[netMaster]

Does someone know how to do it? I'm truly a beginner on this field

[SysAdmin]

Does someone know how to do it? I'm truly a beginner on this field

Pretty sure that's illegal af.

[netMaster]

Pretty sure that's illegal af.

I won't use it on public places but I'd like to try it somehow 😏

[a_different_username]

Well the could and will finde in in Minutes. And you need to Jamm ALL Bands that would be very expencive.

[MavenGradle]

Not hard. All you need to do is broadcast signals 'louder' than cellphone providers are. Portable ones usually have a short range of about 15 to 20 meters.

[netMaster]

Not hard. All you need to do is broadcast signals 'louder' than cellphone providers are. Portable ones usually have a short range of about 15 to 20 meters.

so I can't use my phone or laptop? I still need to buy a device

[a_different_username]

Not hard. All you need to do is broadcast signals 'louder' than cellphone providers are. Portable ones usually have a short range of about 15 to 20 meters.

He need to know which Operator the Person use and than the need to Jamm all Bands the operator use. 😝 🤫
If Money not count sure its possible.

[webdev77]

so I can't use my phone or laptop? I still need to buy a device

Correct. A laptop or cellphone cannot broadcast to jam a cell signal with any reasonable effectiveness.

[MavenGradle]

Correct. A laptop or cellphone cannot broadcast to jam a cell signal with any reasonable effectiveness.

A cellphone might just be capable of it. Gonna look into that actually. We know that a cellphone is capable of broadcasting on the network and receiving. The question is whether or not the hardware that is included is capable of fully powering a miniature cellphone tower. Any commercial laptop simply doesn't have the hardware to broadcast on a cellphone frequency.

[webdev77]

A cellphone might just be capable of it. Gonna look into that actually. We know that a cellphone is capable of broadcasting on the network and receiving. The question is whether or not the hardware that is included is capable of fully powering a miniature cellphone tower. Any commercial laptop simply doesn't have the hardware to broadcast on a cellphone frequency.

In theory, yes. In practice, no. They can't output a high strength signal by design as it would be detrimental to regular network operation. Meaningful co-channel interference is effectively impossible to produce from a single mobile handset.

[MavenGradle]

In theory, yes. In practice, no. They can't output a high strength signal by design as it would be detrimental to regular network operation. Meaningful co-channel interference is effectively impossible to produce from a single mobile handset.

Right. I just looked at the hardware inside my phone which has open schematics. The thing doesn't have the strength that would be required unless you want to block about a 10 inch radius of space and even that would be pushing it. Your phone would turn hot af as well.

[CockMcStuffins]

Jamming cellular isn't quite as straight-forward as one would hope. Specifically, different technologies (LTE vs. GSM/CDMA, etc.) use different bands and frequencies. Most phones support many bands. That basically means that if you have a Verizon phone on LTE in North America you're going to have to jam at least three different frequencies at the same time. If you were to jam a single band the phone would see a bad SINR (Signal to noise ratio) and choose a different band. In addition, you will need something pretty noisy to do it for more than about 35-50 ft from the phone. If there's a serving cell site nearby even that may not work.

Lastly, as some here have suggested, it's majorly illegal to use a jammer. In the past I've been able to do some jamming using a software defined radio kit. If you put enough power behind it, it should do the job. But don't do it, it's illegal. :)

Does someone know how to do it? I'm truly a beginner on this field

[netMaster]

Thank you all for the inputs, greatly appreciated! Hardware, bands & frequencies are the problem

[Select]

so I can't use my phone or laptop? I still need to buy a device

Of course how do you expect to accomplish this with a computer? I don't think anything like that actually exists.

Defintely buy a device its the only sure way.