Samsung’s been in the tablet business for quite some time, and over the years, it has played around with different designs to keep things interesting. Right now, it seems the Korean giant has taken a different approach to making mid-range slates, as evidenced by the outward appearance and 4:3 screen ratio of its new Galaxy Tab A tablet. It is, in many ways, the unofficial successor to the Galaxy Note 8.0. The 4:3 ratio, as Samsung puts it, “is ideal for reading books, magazines and newspapers, as well as surfing the net,” though I’d argue that packing more pixels into the 8-inch …