In the current era, the fingerprint sensor below the screen is increasingly popular and has been brought down by many manufacturers in the mid-range segment. However, with the optical sensor, there is one thing you may not know.

Specifically, on a post at the Reddit forum, a member discovered inside the hidden system settings of the Mi 9T, Xiaomi allowed users to see what the camera (of the sensor hand) at the bottom of the screen can be saved.

To demonstrate, a user has shared a feature screen recording video on Twitter. Although the image quality from the camera under the screen is quite poor, but according to Mishaal Rahman, member of the forum X.DA-Developers, this is a serious flaw and needs to be fixed.

Currently, Xiaomi has not responded to the above information. Plus, whether an update fixes this will be released in the future is yet to be confirmed.


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