Vivo officially released this year's main model vivo X21 on March 19. The new machine has added a new generation of 19:9 ultra-narrow U-shaped slot OLED full screen, the back is replaced with 3D micro-arc glass, supporting 1024 feature dimensions of 3D face unlocking, equipped with Qualcomm Snapdragon 660 AIE multi-core neural network acceleration chip , declared to integrate AI into the background management, assistants, scene cameras and beauty scenes. What we got this time is the vivo X21 screen fingerprint version that has been added to the screen fingerprint. If there is no accident, it will be the first screen fingerprint and the first U-slot screen phone that most users are in contact with. Let's take a look at its true content: Appearance and packaging The new machine is packaged in blue and black with the logo of the "2018 World Cup Official Mobile Phone". Accessories are still very rich, including manuals, card pins, data cables, headphones, dual-engine fast charging heads compatible with QC fast charging (maximum output 18W, model BK-T-01Q, Selcom OEM) and original mobile phone case. This generation of mobile phone cases is very special, made of mixed materials, the side is soft silicone (anti-drop), and the transparent part of the back is a hard plastic material, the details are well received. Brand new design Vivo X21 screen fingerprint version changed to a new appearance ID design, the front is a powerful U-slot full screen, the screen ratio is up to 19:9. Excluding the U-shaped slot, the screen of the vivo X21 screen fingerprint version is as high as 90.3%, which is very close to the APEX concept machine that was introduced before the vivo. Continue to narrow the chin and become the bangs' forehead, plus 1.66mm left and right borders, the visual effect of the vivo X21 screen fingerprint version is more shocking than the thick iPhone X. Vivo X21 screen fingerprint version of the top U-shaped slot position plugged a number of sensors, under the strong light can see the irregular opening on the left side of the opening earpiece, which integrates the light / distance sensor and infrared fill light for face unlocking Lights (domestic face unlock finally has an infrared fill light). The front camera on the right adds a self-portrait AR sticker and 3D depth of field face recognition with 1024 feature point dimensions. The back of the vivo X21 screen fingerprint version was changed to four curved 3D glass. The official claim that the left and right drop is 2.97mm, the difference in drop is 0.57mm, the side curvature is increased and the middle frame is continuously transitioned. Below the glass is a 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, which is much simpler. The main camera of the vivo X21 screen fingerprint version is a 2x12 megapixel (24 million photosensitive unit) sensor that supports full-pixel dual-core focusing. It can be photographed in two modes of 12 million pixels and 24 million pixels, and can independently capture depth of field information. Vivo X21 screen fingerprint version This time the fuselage layout is very special, usually placed on the left side of the card slot was moved to the bottom, symmetrically placed with the speaker symmetric opening. Therefore, there is no opening at all on the left side of the fuselage. The rest are familiar layouts, top headphones and noise canceling microphones, right side volume and power button, and the bottom is still the mirco-USB interface and speakers. The middle frame of the vivo X21 screen fingerprint version has a bright surface coating, and the look and feel are unified with the front and back of the glass. The coating directly covers the antenna partition groove of the upper and lower frames, and the overall feeling is very strong. In addition, vivo maintains the previous high-screen side gaskets, which makes the thickness of the middle frame shrink to about 3.1mm, which is very thin whether it is visual or feel. This ultra-thin border, the moment of taking the hand will give a very shocking sense of shock, and even bring the illusion of "angularity". Screen quality The 19:9 OLED full screen of the vivo X21 screen fingerprint version uses the P3 color gamut standard. In the actual test, its default color temperature is 7716K, and the cold screen is undoubted. The full white screen has a maximum brightness of 416 nits. Under automatic brightness, it can jump according to the brightness of the environment, or even reach 557 nits in white. It is simply shocking. This brightness score is no different from the LCD screen. It is enough to stand on the same starting line as the iPhone X and Samsung's own flagship. There is no big problem in using it under strong sunlight. Considering the hardware quality of this block screen, if there is no accident, the supplier is Samsung. Near the daily use of 100 nits brightness, the vivo X21 screen fingerprint version of the 104 color sRGB color standard, the average deltaE is 5.7, the maximum 10.7, the performance is quite satisfactory. The same is 100 nits, 104 colors P3 color, the average deltaE is 4.8, the maximum is 11.9, the performance is better. The important thing to note here is that in color management, vivo is very aggressive this time. In addition to this screen according to the P3 color gamut, the camera of the vivo X21 screen fingerprint version is the same as the iPhone, and the default is to use the P3 color gamut. This is extremely rare on the Android platform. System and experience The system version of the vivo X21 screen fingerprint version rose to Funtouch OS 4.0, and the bottom layer of the system also went to Android 8.1. The most special is that the vivo X21 screen fingerprint version is the first default color management Android mobile phone using P3 color gamut, even the system screenshots are straight out of the P3 color gamut. Funtouch OS 4.0 adds navigation gestures, which can hide the three King Kong buttons in the navigation bar and complete common operations by scrolling. The most special thing is that in the middle of the "return to the desktop", the middle of the stroke and stop triggering "multitasking page", the side of the stroke trigger "return", the position of the previous menu button is triggered to trigger the control center. Because it is equipped with Snapdragon 660 AIE artificial intelligence acceleration chip, vivo X21 screen fingerprint version has added a lot of AI and AR functions, such as automatic camera scene recognition and AI beauty, etc., the camera also joined the AR shoot, with a variety of accessories You can also install a third-party app. The most special feature of the vivo X21 screen fingerprint version is its on-screen fingerprint recognition. By default, the phone will be illuminated and will be prompted in the fingerprint area. After the finger is placed, this local area will illuminate the fingerprint with high brightness for detection. The actual experience, just started to use because there is no groove of the physical button is a bit unaccustomed, the speed is farther than the fingerprint recognition of the previous seconds, but it is much faster than we expected, for the value, this improvement Still worth it. 165W Medical Power Supply,165W Medical Device Power Supply,165W Medical Power Adapter,165W Rade Power Supplies Shenzhen Longxc Power Supply Co., Ltd , https://www.longxcpower.com