Vivo released a Vivo APEX concept machine this year, which not only has a high proportion of screens, but also combines offline fingerprint identification, pop-up camera and other technologies. However, due to various reasons, the machine has not achieved mass production, and the real mass production release is the Vivo X21 screen fingerprint version. If the mass production version of APEX is a beautiful fantasy, the vivo X21 screen fingerprint version can be understood as "APEX transformed into reality". Although the reality is cruel, this is the real life.
Because this article is too long, write the conclusion here first.
summary
The vivo X21 screen fingerprint version combines two new technologies, namely, heterosexual full screen+offline fingerprint, and is a striking product. However, because of the high cost of "offline fingerprint identification technology", the vivo X21 screen fingerprint version does not seem to be cost-effective. We have to admit that the performance of Snapdragon 660 AIE is limited, but as a mid tier product line of Snapdragon, it is also enough to cope with the daily use and game experience of most users.
Vivo has been winning users' favor through special function selling points. It was "HiFi" in the early years, later became "Camera", and now it is "fingerprint under the screen". You may say that the "fingerprint under the screen" has not changed the use scenario of the mobile phone, nor has it changed its function substantially, but it has to admit that it looks really cool.
Screen fingerprint identification
The biggest highlight of vivo X21 screen fingerprint version is undoubtedly that it is equipped with more mature offline fingerprint technology. There are two different schemes for underscreen fingerprint identification of vivo X21 screen fingerprint version, which are provided by two different suppliers, namely Huiding Technology and Synaptics. Huiding Technology uses IN display fingerprint sensor, while Synaptics is the upgraded version of Clear ID FS9500 optical fingerprint series 2.0.
In fact, there is not much difference between the off screen fingerprint and the off screen fingerprint in terms of setting and fingerprint entry, but the fingerprint identification area has changed. In addition, the vivo 21 screen fingerprint version provides three different unlocking animations in the settings.
Screen out fingerprint recognition
Lighten screen fingerprint recognition
The underscreen fingerprint identification area of the vivo X21 screen fingerprint version is about the same size as the normal back fingerprint identification area, which is different from the large underscreen fingerprint identification area of the vivo APEX concept machine. In terms of recognition speed, its unlocking speed is slightly slower than Vivo's previous Home key fingerprint recognition machine, but it is still acceptable.
At the beginning of using the fingerprint under the screen, the author was not used to it, and sometimes it was biased. After using the vivo X21 screen fingerprint version for 1 to 2 days, my hand soon became familiar with this offline fingerprint operation, which is no different from the normal Home key fingerprint identification.
Appearance: ice drill black version
The new phone is packed in blue and black, with the logo of "2018 World Cup official mobile phone". The accessories are still very rich, including instructions, pins, data cables, headphones, dual engine fast charging head compatible with QC fast charging (maximum output 18W, model BK-T-01Q, manufactured by Salcom) and original mobile phone case. This generation of mobile phone case is very special. It is made of mixed materials. The side part is soft silicone (anti drop), while the transparent part on the back is hard plastic.
The vivo X21 screen fingerprint version uses a new appearance ID design. The front is a full screen with a powerful U-slot, and the screen proportion is even higher than 19:9. Excluding the U-slot, the screen of vivo X21 screen fingerprint version accounts for 90.3%, which is very close to the APEX concept machine launched by vivo before. Continue to narrow the chin and turn the forehead into bangs, plus 1.66mm left and right borders, the visual effect of vivo X21 screen fingerprint version is more shocking than that of iPhone X with thick borders.
Many sensors are plugged into the U-shaped slot on the top of the vivo X21 screen fingerprint version. The irregular holes on the left side of the earpiece can be seen in strong light. The light/distance sensor and infrared fill light for face unlocking are integrated in it (domestic face unlocking has finally added infrared fill light). The front camera on the right side adds a self timer AR sticker and a 3D depth of field face recognition function of 1024 feature point dimensions.
The back of the vivo X21 screen fingerprint version is changed to a four curved 3D glass. The official claim is that the left and right fall is 2.97mm, the upper and lower fall is 0.57mm, and the side radian is increased and continuous transition with the middle frame. Under the glass is the color treatment process of coating+silk screen, which will have different gloss effects at different angles. Because this one is a screen fingerprint version, there is no fingerprint opening on the back, so it should be much simpler.
The main camera of vivo X21 screen fingerprint version is a sensor with 2x12 million pixels (24 million light-sensitive units), which supports full pixel dual core focusing, can take photos in two modes of 12 million pixels and 24 million pixels, and can independently collect depth of field information.
The body layout of the vivo X21 screen fingerprint version is very special this time. The card slot usually placed on the left side has been moved to the bottom and placed symmetrically with the loudspeaker opening. Therefore, there is no opening on the left side of the fuselage. The rest are familiar layouts. The top earphone and noise reducing microphone, the right volume and power button, and the bottom are still mirco USB interface and speakers.
The middle frame of the vivo X21 screen fingerprint version is uniformly coated with a bright surface. The appearance and feel are as consistent as possible with the front and back of the glass. The coating directly covers the antenna partition slot of the upper and lower frames, giving a strong sense of integration. In addition, vivo maintains the previous high screen side washer, so that the thickness of the middle frame is conveniently reduced to about 3.1mm, which makes it very thin both visually and tactically. This ultra-thin frame will give you a very amazing sense of shock when you hold it, and even bring the illusion of "edges and corners".
Appearance: ruby red version
Screen quality
Vivo X21 screen fingerprint version screen test data:
Contrast: infinite Default color temperature: 7700K
Manual maximum brightness: 416nits Automatic global maximum brightness: 557nits
DCI-P3 color gamut 104 color average color level 4.8
It is worth noting that the X21 screen fingerprint version not only uses the DCI-P3 color gamut on the screen, but also uses the DCI-P3 color mode for camera imaging, which is very rare in the Android platform.
System and experience
The system version of vivo X21 screen fingerprint version has been upgraded to Fontouch OS 4.0, and the bottom layer of the system has also gone to Android 8.1. The most special thing is that the vivo X21 screen fingerprint version is the first mobile phone on the Android platform that uses the P3 color gamut for default color management. Even the system screenshot is directly out of the P3 color gamut.
In Funtouch OS 4.0, a smart desktop with a negative screen has been added. The smart desktop will aggregate users' daily information, weather, stocks, memos, itineraries, even takeout, etc., and integrate all information for quick preview.
The Jovi AI assistant built in the system supports intelligent screen recognition. Users can split and recognize the content of text messages by long pressing, and can quickly extract information. They can quickly search, share, copy, add to the address book, and even navigate.
Funtouch OS 4.0 has added navigation gestures, which can hide the three King Kong keys on the navigation bar and complete common operations through upward strokes. Its most special feature is that, except for "Back to the Desktop" in the middle, "Multi task Page" triggered by "Stop" in the middle, and "Back" triggered by "Back" in the side, the previous menu key position is the trigger control center.
Because it is equipped with Snapdragon 660 AIE AI acceleration chip, the vivo X21 screen fingerprint version has added many AI and AR functions, such as automatic camera scene recognition and AI beauty. The camera has also added AR cute photography, with a variety of accessories, which can save a third-party app.
performance
The vivo X21 screen fingerprint version uses the Snapdragon 660 AIE SoC. Its CPU and GPU are no different from the conventional Snapdragon 660. However, Qualcomm has realized stronger AI accelerated computing in this SoC through the Neural Processing Engine and the Hexagon Neutral Network. In terms of performance, the score test result of X21 screen fingerprint version is basically consistent with that of other models equipped with Snapdragon 660, and its AI acceleration function is not reflected in the performance score. In the actual King Glory game test, although the average frame number of King Glory of X21 screen fingerprint version is basically the same as that of X20 (Snapdragon 660), the frame loss of X21 screen fingerprint version in the regiment war has eased.
photograph
The main camera sensor of the vivo X21 screen fingerprint version is Samsung S5K2L9, which uses 2 * 12 million pixels (24 million light-sensitive units), supports full pixel dual core focusing, and can take photos in two modes: 12 million pixels and 24 million pixels. The secondary camera is S5K2L8, also from Samsung. It is designed with 5 million pixels and is mainly responsible for depth of field.
Daytime proof sheet
In order to show the improvement of the photography effect of X21 screen fingerprint version, we selected its previous generation product X20 for comparative testing, both of which use the automatic backlight (HDR) shooting mode. In the actual test, the excitation scenes of the two are almost identical, so the imaging effect is also relatively close. However, in terms of the use experience, especially the focusing experience, it has been greatly improved compared with X20. The biggest difference between the two is that when the same focusing point is shot continuously, the X21 screen fingerprint version can continuously focus on this point, while X20 needs to focus on each shot, which is a lot more cumbersome to use.
Left - X20 Right - X21 Screen Fingerprint Version
100% local magnification
Left - X20 Right - X21 Screen Fingerprint Version
100% local magnification
Left - X20 Right - X21 Screen Fingerprint Version
100% local magnification
Due to the rapid progress of sensor performance in the past two years, it is difficult to open the gap between sensors of the same level and pixel in daytime proofs, especially in details, there is almost no difference between products of the same pixel level. This rule also applies to X20 and X21 screen fingerprint versions. However, due to the difference in algorithms, there are still some differences between the two in terms of white balance and exposure. In contrast, X21's restoration of red and blue is more realistic, with moderate saturation, and the white balance is also a bit cooler. Therefore, the overall style is closer to the naked eye, but the photos that tend to be more realistic are not as eye-catching as those with heavy ink and color, However, this is also a matter of difference. In terms of exposure, X21 screen fingerprint version and X20 screen fingerprint version are not very different, but on the whole, the exposure of X21 screen fingerprint version is relatively low, and the two are considered to be between Zhongbo.
Night proof sheet
In the aspect of night scene proof, the importance of algorithm is more important than that of daytime. Usually, the same set of photographing modules can be improved greatly after algorithm upgrading. Therefore, although the X21 screen fingerprint version and X20 are not different in hardware, the change of algorithm has also changed the two.
Left - X20 Right - X21 Screen Fingerprint Version
100% local magnification
Left - X20 Right - X21 Screen Fingerprint Version
100% local magnification
Left - X20 Right - X21 Screen Fingerprint Version
100% local magnification
In terms of night view, the performance of the two is quite similar, but there are some differences in some details. For example, in terms of picture purity, the X21 screen fingerprint version has improved to a certain extent. The painting is quite clean, and the noise control has also improved slightly, but the overall gap is not big. In addition to the improvement of noise control and smearing algorithm, there are also some changes in color. Compared with the daytime sample, which has properly reduced the saturation, the nighttime sample appears to be richer in color, with increased saturation, slightly warmer color temperature, and more comfortable overall picture view.
Pre beautification
In addition, this vivo has made full use of the AIE AI acceleration chip of Snapdragon 660, and added many AI and AR functions for taking photos, such as automatic camera scene recognition, AI beauty, AR cute shooting, etc., providing more playing methods for selfie, and AI functions have finally landed in real use.
AI beauty is no stranger to many users. Its AI chip based beauty intelligent algorithm has a higher recognition rate and faster photo processing. It can be targeted and optimized according to different skin colors and face shapes. Compared with the traditional stereotyped beauty effect, AI algorithm is more personalized and more personalized.
This vivo X21 screen fingerprint version is equipped with 6 levels of intelligent beauty, and users can adjust the beauty level according to their personal needs. When shooting, the vivo X21 screen fingerprint version can identify the user's gender and beautify the face according to the user's facial features.
In addition, the newly added AR Cute Shot function comes with a variety of AR accessories. Although it is not very practical, there are still many interesting ways for girls who like to take selfies.
Endurance
In terms of endurance, the vivo X21 screen fingerprint version uses a 3200mAh battery. Its endurance performance is moderate, which is at the midstream level of the current flagship aircraft endurance. Its endurance performance is consistent with that of the Xiaomi MIX 2S, and even the power failure of four small items is consistent. In the case of no qualitative change in battery materials and technology, the current smartphone's endurance is basically linked to the battery capacity. If everyone is about 3000mAh, then your endurance must be at the same or worse level than others. There is no possibility of "3000mAh battery, endurance against the sky, and a huge gap with other mobile phones".
