In an age where smartphone are bigger than ever and require serious thumb gymnastics to swipe down to see notifications, Asus is remaining true to its compact design concept in a newly unveiled update to its Zenfone. Angular contours, a metal frame and two circular camera lenses are the first features to strike you when you look at the new Zenfone 9. Take it into your hand though, and you’re likely to notice the comparatively small measurements with its 5.9-inch of AMOLED display (120 Hz) – the same size as its predecessor. In contrast to the Ultra and Pro Max models of the smartphone world, t…