This is a simple app to enable you to hear the voices in a room from another room or any where you want like a real SPY Device.it turns your phone to r real spy tool / spy device.Usage is very simple:1 – Enable azspy service (started by default at phone boot).2 – Silent your phone (there is a check box there to do this).3 – Live the phone in a corner out of sight.4 – Go to the other room (or any place you want).5 – From another phone, send a call back pattern to your phone via text message.6 – Wait a second; your phone will call you back as soon as the callback message delivered.7 – Enjoy the new spy tool; you can hear the room voices now.please do not forget to write me a short comment, and if you like it please RATE this app.thanks.