excellent program by Developer NLL, to record telephone conversations on your android device. Recording is made in formats such as: ogg, 3gp, mp4, wav. Do not use Call Recorder - ACR on your device together with similar programs, due to lower call recording quality. The app works fine on most smartphones.
Additional Information from Google Play:
: 2.3 +
: 10 000 000–50 000 000
: 3+ years