No. Nokia 7 Plus does not support face unlock as of now. It is expected that Nokia will soon release an OTA update for it.
No. Nokia 7 Plus does not have the Dolby audio.
Nokia 7 Plus has an ambient light sensor, proximity sensor, accelerometer, e-compass, gyroscope, fingerprint sensor and hall sensor.
Yes, Nokia 7 Plus does have the 4K recording support.
Great battery life, immersive display, solid design, and software at its purest, that's the Nokia 7 Plus for you.