see Mr ramesh m21 not have nfc so Samsung pay doesn't support so come about to nfc its not get in a software update it also needs nfc tags in hardware and coming to Knox security it also need some hardware and some software so Knox security also u don't get so coming to screen recording feature u can download a app in play store u can download there are somany screen recording apps in play store if I said correctly please click at 3 dots and click accept solution plz have a nice day 👍
Knox security can't be implemented via software updates, and for samsung pay knox and other essential hardwares are must,so,your device is not eligible for samsung pay.
your device might get screen recorder with future updates
