Samsung galaxy a12,4/64

Samsung galaxy a12,4/64,it has no back cover, I've ordered one,and it'll be here in a week,you can buy it without a back cover for 35€,or with a back cover for 40€,as the one I have currently is cracked,the phone has no issues from what I can see,I bought this phone off a friend so I really don't know much and I haven't tested it either,it runs perfectly but I don't know about the condition