I had this record for 4 months and it recorded his first call yesterday with the different versions I was sent the last one wouldn't even install try it on and off for over a month but it got error 504they said it was my build does anyone else have that build number because I need to check the settings it's recording perfect did I get a message to change the recording mode every time its in use
"CM12.1 Android 5.1.1 LMY47V build" seems have bugs inside the ROM related to call recording. I suggest you use the stock ROM at this moment, it works well using these settings Nexus 6 Call Recording.