ASUS Zenfone 3 is another sign that phones with 6GB of RAM are becoming the new trend for the second half of 2016, following last week's ZTE Axon 7 launch and Galaxy Note 6 rumors.There were actually three ASUS Zenfone 3 series handsets just announced at Computex 2016, and each one is bigger than the next. Its largest display tops out at a hand-winching 6.8 inches.All three Zenfone 3 configurations are made of metal, but have widely different specs. It can be a little confusing: the oversized Zenfone 3 Ultra model doesn't have a top-of-the-line chip like you'd expect.