https://www.techradar.com/news/htc-vive-focus-now-lets-you-take-real-life-calls-and-messages

The HTC Vive Focus is currently only available in China, but before it’s released to the wider world later this year it’s getting an interesting new update that's less-interestingly named ‘system update 2.0’. 

The update was revealed at the Vive Ecosystem Conference in Shenzhen and one of the more exciting features that it’ll bring to the standalone virtual reality headset is the ability to receive calls, notifications and messages when you’re in your virtual world. This feature would only work with a paired HTC smartphone, and the first smartphone which will support the feature is the recently revealed U12+.