Night mode is an automatic setting which takes advantage of the new wide-angle camera that's in the iPhone 11 and 11 Pro models. It's equipped with a larger sensor that is able to let in more light, allowing for brighter photos when the light is low.
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Apple Planning to Debut OLED iPhone in 2017
In December, Apple contacted LG and Samsung about the potential to ramp up OLED production in time for the 2017 iPhone. However, the OLED technology would likely be limited to a higher-end iPhone like the 7 Plus or the rumored iPhone Pro due to possible supply constraints.
Apple, who is reportedly close to a deal with Samsung for flexible OLEDs, has been interested in using curved OLED displays in future iPhones, but Nikkei notes that Apple's accelerated development may leave those plans temporarily stalled. Apple is apparently looking to quickly switch to OLED displays to juice iPhone sales, which analysts expect to stall.
In November, Nikkei reported that Apple expected to switch to OLED displays in 2018. Apple supplier Japan Display is planning for mass production of OLED displays for iPhones beginning in early 2018. Samsung and LG, however, are expected to provide the bulk of the OLED panel production, with Samsung planning to ramp up OLED production to 45,000 panels per month this year. The ever-reliable KGI Securities Ming-Chi Kuo reported in November that Apple was unlikely to fully adopt OLED displays until 2019.