I was recently reading how cell phones can be used to listen in on private conversations while the phone is off and the only way to maybe avoid this is to remove the battery (if the internal clock battery is not used as power to capture audio). I spoke to a local shop that said they were aware of this but could not tell if a phone was 'bugged' and that some of their customers requested that the microphone be cut out so that only sms messaging could be used to communicate. I bought a used phone and I was curious about this so I was wandering if their were a way to determine if the phone is firmware bugged. The only way I could think of is to attach an analog VU meter to the microphone to monitor audio activity while the phone is off. It could also be done with a simple resistor preamp LED circuit that lets the LED blink when audio activity is present on the microphone and the phone is off.
I once saw a website offering a firmware hacked Nokia offered by an Italian company so one could spy on their partner/spouse. I find this ridiculously paranoid.
Would this work and could someone suggest a circuit diagram?
Maybe it could even be connected to the hands-free socket and used as an external monitor without opening the phone up.
I once saw a website offering a firmware hacked Nokia offered by an Italian company so one could spy on their partner/spouse. I find this ridiculously paranoid.
Would this work and could someone suggest a circuit diagram?
Maybe it could even be connected to the hands-free socket and used as an external monitor without opening the phone up.
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