Welcome to this simple page on turning a cell phone in to a GSM bugging devise using the same idea as I did for the GSM Alarm.
You will need to check your countries laws to see if any form of surveillance or bugging equipment is allowed to be used in your own country some countries do not allow such equipment to be used by members of the public down to spying.
Now we will look at a portable home made GSM Bug Phone. This will only phone back the number locked in Memory this is very useful if your family are at home only you will be able to hear them even if some one knows the number. The unit will need one touch or speed dial turned on for this to work
1). On this page I am going to cover more on security or surveillances as you can see from the photo below I have used my Nokia 6150e mobile phone from my GSM Alarm page this will run from batteries or a power pack. All so please note you will need to experiment to get the best results.
2). On this page we will cover more on listening to what is happening in the back ground be it your own home or office or if you know were wildlife criminals will be listening to them and getting the evidence you need.
3). Please keep in mind units that use light to activate them have to be placed in dark areas to stop back ground light activating the unit we only want the light from the phones screen to activate the modified phones.
4). When you come to place your bugging devise keep in mind that soft objects absorb sound hard objects reflect sound waves.
5). All so keep in mind that the bug phone will only phone the number locked in the Sim card if this is your main mobile then this is the only phone the bugging phone will ring back this makes it more secure.
6). Even if some one got to know the bug phone number or phoned it they would all so have to allow 2 ring and disconnect but they would not hear a thing unless they had your mobile phone as well.
8). In the photo below you can see I have put PVC tape over the screen as well this is to block out any out side light activating the bugging phone.
The bugging devise below has a inbuilt timer so you can have any thing from 1 to 4 rings to activate the devise.
7). Now we will look at a simple kit form Velleman electronic kits of a Light Circuit please note this one you will need to build your self so some electronic skills is needed..
You can buy the kit from Maplin Electronics in the UK Click here. Or if you are in the USA Click here The above photo can help you in the construction of the kit by looking at the components and seeing were they go as well if you are a total beginner.
All Velleman kits come with good instructions for the beginner my own experience in electronics runs to about 30 years now.
When you have built the electronic circuit then all you will need to do is connect the two wires coming from the phone to the rely connect one wire to the contact that says COM & one wire to the NC contact.
8). In the photo above you can see I have used a Nokia 6150e modified cell phone I called the Nokia cell phone and only had to wait for 10 seconds this will depend on the settings you pick for the delay.
9). The phone called me automatically back and allowed me to listen in to the back ground sound. I have avoided any decoder and encoder circuitry in this modification.
10). I have modified 4 phones like this and use them in my own home.
11). Keep in mind don't connect a battery if you are running the unit from a mains adapter.