mobile-hdr-premium-logoEarly in 2017, the Ultra HD Alliance released specifications for Mobile HDR Premium, a new standard for HDR on mobile devices including phones, tablets and laptops. Those standards include 10-bit color depth on displays, a minimum of pixels per degree, color space (which may vary from smaller devices like tablets and smartphones to larger screens on laptops), and maximum bit-depth.

Device                                      Resolution Dynamic Range Color Space Bit Dept
Smartphones (3- to 7-inch screens) 60 pixels/degree .0005-540 nits 90% of P3 Color gamut 10
Tablets (7- to 12.9-inch screens) 60 pixels/degree .0005-540 nits 90% of P3 Color gamut 10
Laptops 9.5- to 18-inch screens) 60 pixels/degree .0005-540 nits or 0.1-600 nits 90% of P3 Color gamut 10

Source: Ultra HD Alliance