With the base iPhone 16 models, Apple retained the color-infused glass back of the base iPhone 15 models ... It's a purer white than the Starlight white option from the iPhone14 series.
The iPhone 16 has 2,000 nits of peak brightness, while the iPhone 14 boasts 1,200 nits. The iPhone 16 also has a slightly better resolution: 2,556 x 1,179 compared to the iPhone 14's 2,532 x 1,170.