Use APKPure App
Get Call Recorder old version APK for Android
Prosty rejestrator połączeń, brak reklam, open-source
MOST PHONES DOES NOT SUPPORT CALL RECORDING. Blame Google or your phone manufacturer not me!
If it fails with high quality sound recording (voice line) this app will switch back to the MIC recording, no ads, open-source, GPLv3.
Google knows about issue but do nothing, can read more here:
https://code.google.com/p/android/issues/detail?id=206613#c13