I've tried so many variants from similar s4 posts on this forum, but none have worked at all. I can't even get it to record a file at all, much less a file with one or both sides of the conversation.
My Galaxy S4 SPH-L720 (Sprint) is rooted.
Running Android 5.0.1.
Please help! I feel like I've tried several dozen different options in all the settings and nothing seems to work.