The red dot only appears when the call has started. U won't see it while it's still dialing the number in the beginning.just tried to insert this:
persist.call_recording.enabled=true
persist.call_recording.src=4
to build.prop, rebooted, ther's no red dot & recordings, same story after cleaning dalvik. Could you pls point me to the right direction with above. I'm on latest nightly with TDB enabled and CM in the system 2
If you still don't see it, try the xposed module called "enable callrecording cyanogenmod" (or something like that)