Thanks to a new APK teardown we got an insight that Google's own Phone dialer app could soon come with a built-in call recording feature. The discovery was found in the source code of the latest version of the Phone app for the Pixel 4. More specifically, Google added a new icon, layout and other resources alongside a new in-call button to initiate a call recording which was revealed through several strings of code. Call recording option found in latest version of Google Phone app In the past, call recordings were available on the stock Google Phone app up until Android 6...
Source: https://www.gsmarena.com/google_phone_app_could_soon_offer_call_recording_option-news-41041.php