The popular Facebook site surprised millions of its users a few days ago by removing a property that has been popular with users in recent years.
Since last Saturday, Facebook users have been surprised that Facebook's phone has returned to white, with the "dark mode" feature that allows users to browse with a dark background, relieving the eyes at night vision.
According to the British newspaper "The Sun", the feature of darkness has been on the holidays since last Saturday, on all Apple devices, which led to the removal of the choices.
Technology sites said the malfunction could be caused by a system failure of the site, not a general problem, as Facebook's "sister" sites, such as WhatsApp and Instagram, do not face the problem.
Dark mode is one of the display settings for user interfaces that, when activated, displays white text on a dark background.
Thousands of applications have introduced this feature in recent years in an effort to make their interfaces less sharp and radiant in the eyes of users.
Dark mode is one of Facebook's most successful additions, adopted by hundreds of millions, due to the elegant look and comfort of the eyes.