HD Auto Call Recorder 2020 is a free call recording app that is easy to use and offers perfect sound quality. With this app, users can automatically record all call conversations, delete call records after a certain period of time, and protect call records with a password. Additionally, users can delete call records, send call recordings via email, change the audio source and record format, and turn on the speaker automatically. After completing a recording, users will be notified with a notification.

It is important to note that if users are unable to record calls, they can try changing the audio source. If they cannot hear the sound from the other end, they can turn on the auto speaker in settings. In case of any issues with the app, users can contact the developer for support. Overall, HD Auto Call Recorder 2020 is a reliable and useful app for anyone who needs to record phone conversations.