Asus ZenFone 4 Rumors, Specs, & Features Revealed On GFXBench: Snapdragon 820, 6GB RAM & More [Video] Asus is reportedly teased to unleash the next-gen ZenFone 3 successor, dubbed the ZenFone 4, in the coming months. The said upcoming device has been spotted recently on benchmarking site GFXBench, which reveals about its specifications and features.