Plz check the images above this has nothing to do with bitcoins
If u have any questions or doubt u can ask
Its a form of malware! it infects android.. It's illegal in many countrys...
And who knows what's in the files. You could be selling something that infects there pc and steals there wallet files...
The forum is not stupid we have seen your type before..
Buyer beware!The file is in .apk format it does not run on pc so it cant infect pc and whenever u download any app or game from playstore it shows the function of the app in permission dialog. I ll upload the permission screenshot in a while