Sony Xperia Z5 Premium is the first smartphone equipped with a 4K resolution display on the market. Before it, the screen resolution of the phone never exceeded 1080p. However, it was later discovered that in order to save power, this mobile phone is not always in 4K state. In this regard, Fujitsu of Japan developed new technologies.

The University of Japan Institute of Technology and Fujitsu cooperated and successfully completed a device that can make the mobile phone screen reach 4K, and can maintain a stable 30 fps, and reduce power consumption when 4K video output. If it can be applied, the stable 4K presentation of mobile phones will not be a dream.

Although the issue of "4K screen on mobile phone" is still very controversial, it is the same as "2K screen on mobile phone" many years ago. With the advancement of technology and time, no one will refuse the arrival of 4K ， The price of 4K commercial screens will inevitably decline, and the power consumption problem may also decrease due to the improvement of technical level.

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