The line between tablets and laptops has been increasingly more blurred for the past few years. That's especially true for devices like the Galaxy Tab S12 Ultra - a top-of-the-line slate with a huge AMOLED display and a thin profile. It goes the other way as well; laptops nowadays get the same mobile-based chipsets and tablet-like battery life and fluidity.

Perhaps the two categories were always destined to meet in the middle. This is the Samsung Galaxy Tab S12 Ultra, and it's a $1,399 (€1,569/£1,399) flagship with a close-to-15-inch 120Hz AMOLED display, an 11,600mAh battery, and a...