Is Your Cell Phone Bugged?

Thu Feb 15, 2007 5:30PM EST

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Are they listening in on your cell phone calls?  It's pretty much common knowledge that many cell phones can now be converted to work as surreptitious eavesdropping devices. All it takes is some simple changes to the cell phone software (courtesy of your abiding cell phone company) and the government (or anyone else with the secret sauce) can use your cell phone microphone as an always-on transmitter, recording not just your calls but anything you happen to say when you're in the same room as your handset.

Lauren Weinstein links to this interesting (if low-budget) video he made about cell phone bugs (or taps) and how to tell if you've been targeted. Here are the secrets:

  • Watch for excessive battery rundown when you aren't using your phone more than usual.
  • Remove the battery completely when the phone is not in use.
  • Check for excessive heat from your phone when not in use.
  • If you have a GSM phone, hold it near a regular audio speaker and see if there is buzzing from interference when the phone is supposedly off. If the speaker buzzes, that means it's transmitting. Watch the video to understand specifically what kind of buzzing to watch for.

As Weinstein notes, you are almost certainly not carrying a bugged cell phone in your pocket. But if you have cause to be concerned, these tests are very easy to perform and are reasonably reliable, too.

Comments on Is Your Cell Phone Bugged?

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  • 2 Posted by rogueist on Thu Sep 3, 2009 8:49PM EDT Report Abuse

    Actually this is how the Push to Talk works. You see ALL cellphones are always on always connected to the network 24/7 always transmitting. The only traffic you generate when making a call is extra traffic back to the carrier's servers to authorize the phone calls and track the time you use. Otherwise if the carriers were not inbetween, you could call anyone you want any time you want, and as long as their cellphone was on, get an instantaneous connection. The only thing preventing everyone from hearing what you are saying is a simple software MUTE switch when you "hang up". In reality you are still connected to that last person. If you could un-mute the incoming voice data, you would be able to hear everything the other person is saying. If you could both unmute it, then you can have an unlimited chat that the phone company cant even track. So, when they say "all circuits busy" you know its a lie - it is only the circuits to their billing department that is busy... nothing else... If they didnt interfere with the calls being made, you would never get an "all circuits busy" message - ever.

  • 3 Posted by rockymountainmojo on Thu Sep 3, 2009 8:47PM EDT Report Abuse

    I enjoy immensely well researched input on tech subjects, but deplore incorrect syntax found occasionally therein. "Here's the secrets" is and always will be incorrect. A good editor should have caught this and inserted "Here're the secrets" First rate tech writers should also be first rate at the language via which they express themselves. Geeks and techs should be held to the same standards as any other professional journalist...for Noah Webster's sake at the least.

  • 5 Posted by cjsail on Thu Sep 3, 2009 3:26PM EDT Report Abuse

    Here's another great way to bug someone. Some cell phones have an option to automatically answer the call. Set this option on and turn off the ring tone. Anytime you want to hear what is going on in a room just call the cell phone. This is a very cheap way to spy.

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