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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Schematic Purportedly Shows Next-Generation iPhone Front Panel Design with 4-Inch Display
But while iLab Factory's version of the schematic has had many of the details blurred out, another source has provided MacRumors with a complete version of the schematic including measurements for several of the important features on the panel. The schematic appears to have been originally posted by Cydia Blog.
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Most notably, the "active area mask" corresponding to where the device's display will be attached measures 90.1 mm (3.55 in) high and 51.42 mm (2.02 in) wide. This corresponds to an opening measuring approximately 4.08 inches diagonally, but iPhone viewable display areas have historically measured slightly smaller than their corresponding front panel openings. Consequently, this part would seem to nicely accommodate a display measuring 4 inches diagonally at an aspect ratio of roughly 16:9, in line with rumors of and evidence for a taller screen that maintains the width of the current model.
The schematic does not show an exact total height for the part in question, but calculations based on pixel counts and the known height of the display mask area suggest that the overall height of the part is roughly 122 mm, approximately 7 mm taller than the overall height of the iPhone 4S. With yesterday's leaked photos suggesting that the design will see a similar treatment to the iPhone 4/4S with metal edges of the device extending out further than the front panel, the overall device height and width on the next-generation iPhone would measure slightly larger than seen on this part.