Make a spy audio listening device like GF-07 GPS tracker

This is a guide for making a spy Audio listening device. It works like GF-07 or GF-09 mini GPS trackers. That portable GPS tracker has this audio listening feature. you can hear the audio by making a phone call.
this newly invented device also has the same feature. it is a Hidden audio surveillance listening device.
you can make it at home. I made it with an Arduino nano.
Arduino code & more details - technoreview85...
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[@bsktsngrvy8707]

thank you for the wonderful video. i've always wondered about devices like the GF-07 and GF-09 mini trackers. is the one who makes the call able to speak through the phone to the tracker as well, thus transmitting their voice through a speaker on the device? i'm trying to conceive a device that operates on similar principles as this one with this added capability of transmission of audio from the point of the phone user. please respond, very interested. if anyone has any comments or suggestions regarding this please share them, thanks

[@electronic7979]

Süper

[@akrammallick718]

Sir hum kese buy kare Video wala ...Jo ap banay hoo Please batao

[@akrammallick718]

Hum kharid chate hai

[@mophoenix1526]

I made this...but it has a very big problem that it works once out of 10 times and it doesn't answer automatically no matter how many times you call it.

[@Gtubebd]

Good Wark.but need slim

[@TindSarkar]

I can’t make call on the device what can be the issue even msgs are coming

[@technoreview85]

You can try with a minimum 1500 mah battery power.

[@muhammadmajidriaz6961]

Sim dali ha lakin light on ho. Kar on hoti lakin anwser ni dayti

[@technoreview85]

Sim 800 module ke liye minimum 1200mah battery chahiye.

[@muhammadmajidriaz6961]

@@technoreview85 Bhai apna no send kar daya ma call bat karta ho

[@muhammadmajidriaz6961]

Is ka imei no kash mahlom karta ha

[@technoreview85]

IMEI number module ke upper likha raheta hai

[@muhammadmajidriaz6961]

@@technoreview85 Ander Jo cricuit ka uper