Vivo’s ultralight selfie screen could be the year’s standout mobile accessory Vivo launched the flagship X500 series of phones, with three new models A new monitoring screen comes in the X500 Pro Max photographer's kit, or it can be purchased separately At launch, all the phones and accessories are China-only, with a wider rollout TBD Vivo quietly launched a really neat accessory alongside its new flagship X500 series of phones — an ultra-slim and light Bluetooth monitoring touchscreen — and, having paired it with the new X500 Pro Max, I wish it were compatible with my phone. The monitoring touchscreen, aka a selfie screen, mirrors your phone's camera app, complete with touchscreen control over key camera settings and subject tracking, and can be attached to the phone magnetically or used as a remote monitor within its Bluetooth range. Why not just use your phone's selfie camera in...