The HTC Vive app brings some of the headset's unique features to iPhone owners for the first time, such as the ability to receive calls, text messages, and calendar reminders within the relative isolation of immersive VR.
Notifications forwarded by the app appear momentarily in the headset's HUD, and remain available in the HTC Vive dashboard for later perusal. Third-party app notifications are not currently supported.
In addition to downloading the free app, headset owners must install the HTC Vive client on their PC. At present, the Android app's facility to send preset responses to calls or texts from within the virtual world is not supported in the iOS version.
HTC Vive owners can download the app for iPhone from the App Store. [Direct Link]