How to record a incoming phone call like Google Voice in iOS programmatically?

iOS has no APIs that let you record system phone conversations. If you’re building a VoIP app then you have access to the audio and you can record that, but there’s no way to record, say, a phone conversation made using the Phone app.

If you are building a VoIP app and have questions about recording audio, I recommend that you ask them over in Media > AVFoundation (Audio).

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Apple Developer Relations, Developer Technical Support, Core OS/Hardware

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