When we first got wind of the Nokia 9 PureView and its multi-camera system, we were sure Nokia had hopped on the ultra-wide-regular-telephoto bandwagon with a time of flight 3D and monochrome auxiliary cameras to fill the quota up to five. We were wrong. Nokia surprised just about everyone with the camera selection on the Nokia 9 PureView - five 28mm 12MP f/1.8 snappers, three of which are black and white, two of which are RGB, and a TOF 3D camera on the side. So what do five cameras with identical fields of view do for the one clicking the shutter button? Nokia has gone for a few...
Source: https://www.gsmarena.com/nokia_9_pureview_gets_us_closer_to_the_beauty_of_real_bokeh-news-35793.php