Best way to present your App

Now a days, all Android version do the AUTO CALL RECORDING in phone, no matter its SAMSUNG, MI , RED ME , HTC or whatever . Client need that our app take all the recorded call files to Cloud as the call disconnect from phone. If the internet is off at that Particular time, than it goes to Cloud as the mobile internet get on. Each Mobile Hardware has different Path/directory where these recorded files get saved. Our app should be compatible to find that directory/folder where these Files are saved, so that it can fetch it to CLOUD. If Recording is off in that phone, our app must make it ENABLE with the permission of USER. These Data fetching has to be done for CALLS & SMS both. But Call Clouding is Primary, SMS Task is secondary.