Fierce competition between side fingerprint unlocking and ultrasonic technology: Xiaomi MIX Fold 3 and vivo lead a cutting-edge technology duel

News on November 16th, the latest technology leak comes from the well-known blogger @digitalchatstation, which revealed about the upcoming Snapdragon 8 Gen 3 Some exciting information about foldable phones. According to the news, vivo’s Pro series of folding screen mobile phones will use innovative ultrasonic fingerprint unlocking technology. This change heralds an important progress in mobile phone security technology. At the same time, Xiaomi has also made some interesting attempts in its folding screen mobile phone series, although these attempts are slightly different from vivo's technical route.

Xiaomi MIX Fold currently on the market 3Folding screen mobile phones use a side-side physical fingerprint unlocking method. This design does not support under-screen fingerprint technology. Interestingly, although Xiaomi is testing a new fingerprint unlocking solution called "Single Point Ultrasonic", which is expected to be used on the upcoming Xiaomi Mi 14 Ultra large cup model, but currently it seems that Xiaomi’s new folding screen phone may not use this technology. This decision may be related to technology maturity or cost-benefit considerations.

According to the editor’s understanding, there are two main ultrasonic detection methods in mobile phone fingerprint identification technology: wide-area ultrasonic and single-point ultrasonic. The two technologies differ in transmission range and sensitivity. Wide-area ultrasonic waves emit ultrasonic waves from multiple locations and conduct fingerprint detection based on the reflected wavelength, which has a wide coverage and high sensitivity; while single-point ultrasonic waves emit ultrasonic waves from a single location, and the detection range is limited to the vicinity of that point. The development and application of these technologies are of great significance to improving the security and convenience of smartphones.

Recently, news about Xiaomi’s upcoming small foldable phone with vertical screen has been emerging. Previously, a digital chat station revealed that the prototype of Xiaomi's vertical small folding phone uses a new domestic base material and has a central single-hole flexible straight screen design. The phone places special emphasis on buffer-protected frame control and uses a miniaturized waterdrop-like hinge. The overall design presents a square and tough style. However, although the blogger provided these detailed design information, the specific configuration and release time of this new machine are still a mystery, arousing the curiosity and expectations of the majority of technology enthusiasts

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