https://www.cnet.com/news/htc-vive-focus-vr-headset-now-connects-with-the-u12-phone-via-2-0-software-update/

HTC's newest phone, the HTC U12 Plus, was just revealed. And its newest mobile standalone VR headset, the Vive Focus, hasn't come to the US yet. But these two gadgets now intertwine just a bit thanks to HTC's newest software updates to Vive Focus. The news was announced Thursday at a Vive Ecosystem Conference in Shenzhen, China.

Vive Focus is getting a 2.0 software update that will add notifications, messages and connect to calls via headset, bridged to an HTC phone running updated software. According to the news, the U12 Plus (and other HTC phones, but not other Android phones) will be able to run a Vive Companion App that will connect the standalone VR headset and allow some connected functions.