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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Assembled iPhone 6 Logic Board Revealed in New Photo
One of those logic boards has now been revealed in what appears to be a fully assembled state in a photo reposted by Apple.club.tw [Google Translate]. While several physical features such as the nano-SIM slot, a number of connectors for flex cable components, and a flash storage chip that appears to be from Toshiba are visible in the somewhat blurry photo, the most interesting components of the board unfortunately remain hidden under electromagnetic shielding. A silver component at the bottom of the board on the left is almost certainly the Wi-Fi module, although no identifiable markings can be seen.
A second photo [Google Translate] shared by Apple.club.tw today shows a pair of flex cables also said to be from the iPhone 6. The cables appear to be the same as seen in a detailed photo of the front panel display assembly yesterday.