hi I know there's many ways to record Voice in IOS by using one of these famous framework : AVFoundation AudioToolbox Core Audio but what I want todo is to be able record a phone call but there's many challenges interruptions : when I got a call the system interrupt any running app in order to handle this call so how I can I make the voice recording app record voice in background so after I receive a call I open the app and run the record function even though I solved the previous issue , how can I record the sound comes from the phone top speaker if anyone have an idea or any thoughts , please share it with me