Does the Samsung Galaxy Book Flex have a Sim card slot for 4G LTE?

PS: I noticed in shop and in reviews that Samsung Galaxy Book S has a Sim card slot on the bottom side. But I haven't seen the news site of Samsung or the brief reviews mention about this. I read in one review somewhere that the Galaxy Book Flex Alpha has 4G Sim slot, but I didn't find anything about the Galaxy Book Flex. I also read two reviews of Galaxy Book Flex on this website, but neither of them mentioned about the Sim card slot or 4G connectivity.