Before the release of Mi 9, the official said "the most beautiful millet", and the back rendering looks cool and fashionable. With Roy's endorsement poster, it gives people the illusion that you are the most beautiful boy in the whole street with it.
The radian of the side is beautiful
With the real machine in hand, the feeling becomes more specific: Xiaomi 9 leaves the deepest impression: thinness.
Official data: the weight of the whole machine is173g, and the thinnest part of the frame is 3.5mm. It can be said that it has the beauty of the "blade" of that year, and the side is quite beautiful. Unlike vision, the whole machine is quite round in your hand and needs craftsmanship.
Although many fuselages were nominally "curved surface design" before, the specific bending conditions were not consistent. Xiaomi 9' s back is designed with a full curved surface, claiming that it can't find any plane angle on the back, and it can completely fit the palm of your hand in time. Bending treatment on glass has always been a part of the technical challenge of manufacturers, and it has taken another step in Xiaomi 9.
Every place is a surface.
Color matching is another aspect that Xiaomi thinks that "face value can be played". On the curved glass, Xiaomi finishes three layers (theoretically and technically, the actual coloring times will be more) spraying. First nano holographic pattern (similar to mirror silver coating), then primary color coating (blue or purple), and finally vacuum coating.
In our opinion, nano-holographic patterns that can produce a variety of mirror colors can better reflect the technical difficulty. Xiaomi carved a 65.438+0.7 billion nanometer grating in the back area of the mobile phone. With the optical brightening coating, the back of the mobile phone shows different colors under different light and angles, which is similar to our common anti-counterfeiting logo.
The principle is the same as ID card anti-counterfeiting.
Similarly, the nano-holographic pattern is also made of lens ring flash and all-sapphire glass covering three lenses. Technology and materials are very sincere.
Sapphire glass has a much larger lens area.
But good materials and good design can't be equated completely.
The Xiaomi 9 button is loose and collapsed (not sure if the production version is like this), and the transparent mirror treatment makes the fingerprint residue more obvious. These are minor problems. Premature exposure has improved product expectations, and now it has become a sense of gap. We can say that Mi 9 is very beautiful, and it can also be said to be the most cutting-edge millet phone, but the final face value can only be counted as eight points. Avoid pride, there is room for growth.
Turn over and look ahead. Because mobile phone manufacturers were very aggressive in face value last year, there is not much room for growth of various products in the first half of this year, especially at this time of the year.
Xiaomi has made several minor improvements to the current comprehensive experience. A 6.39-inch AMOLED water drop screen is used on the front, with a screen ratio of 19.5: 9. The new COF technology was used to package the chin to 3.6 mm, which Lei Jun said was the narrowest chin of the mobile phone within 3,999 yuan.
The chin is indeed smaller than many mobile phones of the same shape.
In terms of screen fingerprint, Mi 9 adopts the fifth-generation screen fingerprint technology, and its core is an off-screen sensor similar to a macro camera: a single pixel reaches 5μm, which can effectively suppress the influence of strong light, dry hands and low temperature scenes and improve the unlocking speed by 25%. At the same time, it also supports low brightness unlocking, and can also open fingerprints through system settings for quick operation.
A complete lens is hidden under the screen, and the natural experience is better.
Specifically, it takes an average of 20 times for Mi 9 to record a fingerprint, which is a common industry standard. However, in terms of pressing force, Mi 9 can be unlocked almost without too much force, and it can enter the system with a light release, and the success rate is higher than that of ordinary on-screen fingerprints.
In addition, compared with several common screen fingerprint mobile phones, the unlocking speed of Mi 9 screen fingerprint has indeed improved a lot. The unlocking speed of one plus 6T fingerprint with good reputation is slightly slower than that of Mi 9; Compared with the dual-screen version of vivo NEX, which is the first to launch the off-screen fingerprint and has the best experience at present, Mi 9 performs quite well.
Second, Snapdragon 855 is brilliant, but it still has potential.
Xiaomi mobile phone is the first product of Qualcomm Xiaolong 800 chip every year since the third generation. This history has helped the "Mi" prefix mobile phone break through the encirclement of HTC and Samsung, and laid the foundation for people to understand Qualcomm's "Intel in mobile chips".
Even a few years later, other manufacturers came to snatch the crown of Snapdragon's chip release. This is the performance foundation of a flagship product and also the embodiment of a manufacturer's strength. A few days ago in Weibo, Lei Jun announced that Mi 9 would be equipped with Snapdragon 855, and also talked about why it was not good to start. Generally speaking, mobile phone chips are different from computer chips. There is no need to buy it and put it on the motherboard. On the contrary, manufacturers need to invest manpower and financial resources in R&D together with Qualcomm, which is the price of becoming the first.
Qualcomm and Xiaomi have a good revolutionary friendship.
Back to the product itself, Snapdragon 855 is the answer to the guess, and another guess is the improvement of performance. A picture released by Lei Jun Weibo shows this point with curves. Starting from Snapdragon 8 10, the increase of chip computing power is relatively gentle, while the line from Xiaolong 835 to Xiaolong 845 is steep.
This is due to the Kryo 485 architecture and eight nuclear design (1 super core +3 large cores +4 small cores), and the CPU frequency is 2.84GHz, 2.42GHz and 1.8GHz respectively. Compared with 835' s Kryo 385 architecture (4 large cores +4 small cores), the performance of Snapdragon 855 is improved by 45%. In addition, the Adreno 640 GPU is integrated, and the performance is improved by 20% compared with the previous generation.
The Core Architecture of Snapdragon 855
The above is a pile of words, which may be difficult for ordinary users to understand. Let's take a look at the picture and explain it briefly:
About performance
At the room temperature of 20 degrees Celsius, 370,000 yuan is the highest peak of Android phones at present, and our evaluation machine is only the middle version of Mi 9 series (8+ 128GB).
Of course it's 9 102, and it won't just run away without a processor. This year's Snapdragon 855 has a built-in processor called Hexagon 690. Hexagon is actually the standard of Snapdragon's flagship chip. It used to be voice and audio amplification, but later it has more and more functions. Image processing, computer vision, camera and sensor signal processing all have their shadows.
This generation includes a newly designed hexagonal tensor accelerator and four hexagonal vector extension cores, which makes its performance twice that of the previous generation's flagship product vector extension core, and the new task is AI operation. Hexagon 690 also adds a four-thread scalar kernel, and the scalar operation performance is improved by 1.2 times compared with the previous generation.
Snapdragon still has no NPU (Neural Network Processor), which is different from Apple's A series and Huawei's Kirin chip. Qualcomm has always emphasized that AI engine, CPU, GPU and DSP work together. In fact, the tensor accelerator of hexagon 690 can be understood as NPU. /kloc-at the press conference in Hawaii in February, 2008, some media asked whether tensor accelerator could be regarded as NPU. Qualcomm's spokesman said with a smile at the time that if you can sell more chips in this way, you can also call it. ...
As for the practical application, the AI part is still not reflected much in this evaluation. Even if Ann Bunny develops a running score software, it can give it more than10.8 million points, but the significance of machine learning is that the optimization results are different from different people. For example, the increase in the number of cores can only show that it has good physical fitness, but whether it can become an athlete depends on the training the day after tomorrow. Need to find a concrete embodiment. Xiaomi's Mi Turbo and Game Turbo (referring to system 18 months' long-term use optimization and game optimization respectively) all have AI, learning the usage habits of most users and individual users and the "rules" of the software itself, making hardware deployment smarter.
Specific to the game part, naturally we can't bypass the glory of the king's chicken-eating game.
Let's start with the glory of the king. When the multi-thread mode with high frame rate is turned on, the frame rate of the picture will be maintained at about 60 frames, and it will be reduced to 59 frames in the group war, and some scenes will exceed 60 frames, reaching 665,438+0 frames. After starting the practice mode, the frame rate of Xiaomi 9 can be maintained at around 59 frames. After 20 minutes of the game, the calorific value of the mobile phone is not large, which is within the acceptable range.
Real-time display effect of game turbine
Followed by "Survival of the Jedi: Stimulating the Battlefield", the picture quality of this game Xiaomi 9 can reach HDR HD, the frame number setting can reach super high, and the overall frame rate performance is acceptable. When parachuting, the ground screen loads faster, but when the angle of view changes, it will encounter the phenomenon of frame dropping, which will be a little stuck in a crowded environment, but it will not affect the normal operation of the game. There was a slight jam when three smoke bombs were released continuously. At the end of a game, the calorific value of the mobile phone was slightly higher than that of the glory of the king.
Judging from the stable frame rate and picture jam, the stability of Mi 9 is obviously higher than that of a group of Snapdragon 845 game phones last year. In other functions, the performance of GameTurbo is not limited to screen fluency. In the function part, it can adjust the screen touch parameters, such as the sensitivity of sliding and clicking, to create a better control experience for gamers.
Although it is not named as a game phone, the blessing of 855 makes it naturally one step ahead in this link.
Third, wireless charging finally entered the room.
In the past, charging before going to bed was the main scene of wireless fast charging. It charges slowly and generates a lot of heat, but it only relieves the boring few seconds of plugging in the wire before going to bed. This sentence is not only for Xiaomi, but the status quo of all smart phones.
Charging equipment family portrait set
Mi 9 subverts this concept. In terms of quantity, Xiaomi is ready in one breath: high-speed wireless seat charging, high-speed wireless car charging, and even wireless charging mobile power supply not only cover multiple charging scenarios, but more importantly, the charging efficiency has been significantly upgraded. The official said that 20 watts wireless charging can fully charge Mi -9 in one and a half hours (the body power is 3300 mAh), and the evaluation results are consistent with it. The efficiency has been faster than many wired ones.
According to the actual measurement, the output of the 20W wireless fast charging port of Mi9 is 15V- 1.5A, and the output power is 22.5W (considering the transmission loss, the mobile phone terminal will definitely be lower than this value), but after 15min, this value is stable at 14.5V-6550. Ten-minute charging capacity 14%, the fuselage is not hot.
Measured current and voltage data
Due to time, we didn't do electricity monitoring for a long time, but the existing data are basically similar to the official conclusion. Millet adopts multi-layer nanocrystalline structure, plus multi-strand winding technology and charge pump to reduce induced current and stabilize voltage.
In addition, in order to maintain long-term power stability, Xiaomi also added an active cooling fan to the charger, so the new wireless charging is thicker in size. After charging for more than ten minutes, you can hear a slight fan sound about 30 cm near it, but it is not enough to affect the daily experience.
About another high-speed wireless car charger, we have prepared another article. You can click here to jump and watch it.
Fourth, taking pictures: enough to wash the outstanding performance of the brand.
I still remember the tangled feeling of holding Xiaomi MIX generation at the beginning, that is, "Yan value is against the sky but it is difficult to take pictures." Fortunately, Xiaomi MIX 3 made a beautiful turnaround last year. After this evaluation, Mi 9 can finally wash the photos of Xiaomi.
The lens quality is absolutely hard enough.
The Xiaomi 9 rear camera adopts Sony's 48 million super wide-angle macro AI three-camera combination. Among them, the main camera adopts 48 million Sony IMX586 flagship sensor, has a 1/2-inch outsole, and supports four-in-one 1.6μm large pixels; The auxiliary lens includes12 million telephoto portrait lens, and a new16 million 120 degree ultra-wide-angle lens is added, which can support 4 cm ultra-close shooting. There is also a "phase+laser hybrid focusing system" that has not been mentioned by the flagship for many years. In addition to focusing faster, it also plays a role in adjusting the white balance of night metering.
Specific to the proof part, based on iPhone XS, four indoor scenes of low light, high contrast, macro and night scene are selected for comparison.
The left is for iPhone XS, and the right is for Mi 9.
Firstly, the indoor low light, except the expressive force of lines and the control of brightness and noise in low light, are at the same level, and the glare suppression of apples under high light is slightly better than half a point; In the high-contrast proofs, Xiaomi wins more, and has intuitive advantages in dark detail preservation, highlight color transition and overall sharpness. However, this set of comparative proofs shows that the color cast of Mi 9 is slightly obvious.
The picture above shows iPhone XS, and the picture below shows M 9.
The two companies in the macro link have different concerns about the algorithm. After all, for mobile phones, "macro dependence on AI is a physical objective fact". The macro of 4 cm makes the composition subject of Xiaomi more prominent, and the blurring of the inner edge of the focus is more accurate. Apple's blur in Jiao Wai is obviously more beautiful. Overall, the expressive force of iPhone XS is slightly better.
The top is Mi 9 and the bottom is iPhone XS.
In view of the fact that mobile phones generally have a hand-held night scene mode and a normal mode, night shooting is also a consistent difficulty for mobile phones, so the night shooting part needs more space.
The first is the ordinary camera mode, which is highly consistent in noise control, metering and color temperature, and overall exposure. Even if the two are mixed together now, it is completely difficult to distinguish from the above aspects.
The only difference is highlight suppression (that is, whether the brightest lamp will be overexposed).
Although the overall exposure of Mi 9 and the brightness of most neon lights are the same as those of Apple, there will be obvious glare and overexposure in one or two points of the brightest picture.
From left to right, open the hand-held night scene for Mi 9, open the hand-held night scene for Mi 9, and shoot with iPhone XS.
In the super night scene, the holding time of Mi 9 is about two seconds, so it is not too difficult to use hands outdoors in winter. Compared with iPhone XS, both highlights and dark details have been significantly improved, which is also the shortcoming of Apple's night shooting.
In addition, Mi -9' s hand-held night shot will also have traces of algorithm-the picture is slightly oily, but it can handle the drag of high-speed objects well and reduce the afterimage of people better.
In the hand-held state, the edge of the building has a slight sense of oil painting, and the shadow is not obvious when walking.
In addition, Xiaomi also prepared a smart slimming selfie that can take into account the surrounding background; Adjust the parameters with AI, zoom in with telephoto lens, and realize the lunar shooting mode with 20 times zoom; And the function of following the video of the subject "similar to the Yuntai experience". However, due to the firmware update problem of the evaluation machine, these functions have not been experienced yet.
More 9-meter proofs list
More 9-meter proofs list
More 9-meter proofs list
In short, if you want to buy a photographed flagship machine, Xiaomi has been on your shopping list since last year's MIX3; Now Mi 9 has steadily improved and finally reached the master level of mobile phone photography.
Five, "some small details that can be played"
First, the dark system
AMOLED is more energy-saving because of its luminous characteristics in black, so the dark system is destined to become a must-have item after the screen is popularized. The measured black color not only saves energy, but also makes the visual effect more comfortable at night. As for how much the actual power consumption will be saved, it is actually a difficult problem to control. After all, users will stay in the application for a longer time, which has little to do with simple system color matching.
Second, the new audio system.
Mi 9 is known as "Xiaomi mobile phone with the best external playback effect so far" because of SLS superlinear unit speaker and high-voltage intelligent PA power amplifier. This function didn't get much attention in the previous evaluation, but when I woke up Xiao Ai's classmates at home occasionally that day, the sound quality and sound size of the mobile phone were not much worse than the mini speaker, which was very impressive. In daily movies and games, this advantage is also reflected, and the sound performance of Mi 9 will be more three-dimensional.
Evaluation summary:
Taking photos, performance, charging and discharging, and playing games, from the above points of view, Mi 9 can naturally be called "playing". Coupled with a better speaker system, the best NFC read-write card expansion function, MIUI AI voice, dual-frequency GPS, and Mi 9, it can be called a flagship mobile phone that can be played in all directions. It is officially claimed that this mobile phone contains the improvement of 1 18, in order to change Xiaomi from the original "cost-effective flagship" to "all-around flagship".
As for the open topic of Yan value, this mobile phone is sincere enough in technology.