Using another app I can record in both directions but only own voice heard with Bluetooth
=> This indicates the ROM has a bug inside, you should root your phone to let recorders to fix the problem.
=> If your Galaxy Note4 has a Qualcomm chip inside, after root there are several recorders (less than 4 I think, including Boldbeast Recorder) can fix the problem. For example:
Galaxy Note4 SM-N9100, SM-N9106W, SM-N9108V, SM-N9108W, SM-N9109W, SM-N910A, SM-N910F, SM-N910FD, SM-N910FQ, SM-N910G, SM-N910M, SM-N910MD, SM-N910P, SM-N910R4, SM-N910T, SM-N910T1, SM-N910V, SM-N910W8, SM-N910X, SCL24, SC-01G
=> If your Galaxy Note4 has a Samsung Exynos 5433 chip inside, after root only Boldbeast Recorder can fix the problem so far. For example:
Galaxy Note 4 SM-N910C, SM-N910CQ, SM-N910H, SM-N910K, SM-N910L, SM-N910S, SM-N910U
Does boldbeast work with Samsung note 4?
=> Yes, of course.
If so is rooting required? (prefer not)
=> No root needed, if your phone doesn't have the bluetooth problem or you don't care about bluetooth.
will it record other party if using Bluetooth
=> Without root some phones can record calls in two directions via bluetooth, for example SM-N910G.
=> Most phones have the bluetooth problem - it can't record your voice via bluetooth, so root is needed to fix it.
Also I note audio output doesn't include mp3. Is that likely to be added
=> Maybe in the future, but at this moment we have no plan. We are trying to make the app support more phones.
btw the non pro version definitely did NOT work. Using suggested settings for note 3 it cut my call off. have uninstalled temporarily
=> What's the model of your phone?
=> Can you please click the "Call Settings - Fix Recording Issues - Ask New Parameters" item in Boldbeast Recorder to send hardware log files to me? let us have a look at them and see what happened. Thanks.