Currently, the display boasts a maximum brightness of 2,000 nits, and this figure could increase to 2,500 nits on its successor model.

This speculation comes from leaker ShrimpApplePro, known for fairly accurate predictions albeit not flawless regarding Apple products, including 6GB RAM for all models. He also reported that the upcoming iPhones will feature a sleek new design with curved edges, slimmer bezels, and a titanium casing.
In a recent Twitter post, ShrimpApplePro hinted that Apple might implement the next-generation display with a maximum brightness of up to 2,500 nits for the flagship iPhone model of 2023. However, the current reports are quite vague, and ShrimpApplePro states that this display is 'likely' to appear in .
Moreover, analyst Ross Young told 9to5Mac that he hasn't heard anything about the brightness of the upcoming iPhone series. There are other ways to increase brightness without necessarily using an entirely new type of display. The company could employ a multi-layered array (MLA), a technique that enhances brightness on smaller screens. Additionally, manufacturers could also eliminate the polarizer of the screen. Let's wait and see!
