1

I use CyanogenMod CM13 (android 6.0.1) on my Samsung Galaxy S2PLUS rooted (GT-I9105P), which settings should I use?
Thanks for your help

2

GT-I9105P uses the Broadcom chip that is unpopular, the third-party ROM developers and recorder developers know little about it, so I'm afraid all customized ROMs and all recorders in the market can't record calls in two sides - no solution in the world.

3

I'm sorry to have this phone.
It may be that (by luck) one of the many options/combinations available in the software is ok for my phone?
Otherwise on the first opportunity I will change phone.
Many thanks for your help.