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I was reading following article and I come up to know about RF(Radio frequency) signals are the medium of communication between connect mobile phone calls.
Idea came in my mind to have android app kind of RF scanner which secretly eavesdrop on mobile phone conversations around you.
I know i need more research but i quickly want to know if it is possible with android apps or not ?
Android does not offer APIs to do this. They are buried in radio kernel, which comes from pphone vendor. So answer is negative. It is possible but not with android.
PS: COTS solutions doing this are usually restricted in export and pretty expensive.