Vivo Nex S (left) and Nex A (right) HIGHLIGHTS The Vivo Nex S is the top-end offering The Nex A has the Snapdragon 710 SoC Both feature pop-up selfie cameras The Vivo Nex S and Vivo Nex A were launched in China as the company’s latest flagship smartphones on Tuesday. The Vivo Nex S is the premium model, and features a Snapdragon 845 SoC, …