As it shown on the video both A03s and A12 mostly have the same specifications,A12 just has a more versatile rear camera with little bit better charging speed,thus A12 is too expensive than what it gives and it's not worth it
Overall Samsung Galaxy a12 is a better phone , costs a little more. Can't go wrong with either one of these budget phones. Does everything I need watch utube videos ,surf the web , emails , take photos. I'm not gonna spend $1000 bucks ++ on a phone ..