Can relate. I used a KZ ZSN PRO in my A02 last year but it broke, I got another one six months after, the same model, but it doesn't work as it should, I got some software problem that disconnects the phone just by touching the plug. It works fine in my computer, in my friend's S20 and I also have two other wired headphones (one USB C and one P2), both working fine in my computer and the smartphone, but when it comes to the KZ it simply doesn't work. What upsets me is that one is the best headphone I've ever used, and Samsung is giving me trouble to use it properly. I don't care anymore, anyway I'll replace it to something with less bloatware, just wanted to note down one of the several issues this company ignores.
