Nice specs, but when do we see a VIVO series with 4G LTE? I've had several of your phones now (including Vivo V) and when I pay $400 bucks, I'd like to see something more competitive. Hopefully the quirky volume control issue is over. Each of my phones saw the volume significantly degrade within 24 hrs of ownership. I exchanged each several times and the same. My son's didn't show up nearly as quick as mine, but after about a month and a half it happened. I really like all of them!