Call Recorder –  ACR is a call recorder application. It is one of the best call recorders in the Play Store and offers tons of featuresDo not use ACR in conjunction with other call recorders and try different recording formats (ogg,3gp,mp4,wav) to find best one for your phoneSome phones do not support call recording properly. This is due to capabilities of different chipset/CPU or Android version each brand/model have