Xiaomi 9 is a 6.39-inch mobile phone. Under the water-screen design of 90.7% of its high-screen ratio, the whole is a medium-sized mobile phone. If you are barely able, the boys can still operate with one hand. The transition between the metal middle frame and the full surface is smooth, and it is very comfortable to hold on the hand. The holographic color scheme of Xiaobian borrowed from the test is a rare one among the three models listed in Hong Kong. The back of the lavender glass machine will reflect the three primary colors with different light angles. Visually, this design is lower-key than the current gradient body, but retains a gorgeous feel. It is a pity that the glass body is still a powerful "fingerprint collector"; I just want to solve it by attaching a protective cover to the packaged device. What I can’t think of is that the plastic case is also "oil-absorbing", and it is even more Dark gray, completely covering the back of the design. In the end, Xiaobian had to diligently wipe the phone and keep it clean.
The sound effect is never a bright spot on the Xiaomi phone, so it is not surprising that only one single-sided speaker at the bottom of the phone outputs, and the other side just looks good. Under this full screen trend, many mobile phone manufacturers have used the components under the screen to replace the handset. Xiaomi himself is a predecessor, but on the Xiaomi 9, he still can see the earpiece on the screen, but it is Did not introduce the output of the dual speakers, it is really chicken. The USB Type-C interface in the middle of the machine supports the 27W wired fast charge. The top of the set is the infrared ray that has been bought less and less. It seems that the users of Xiaomi really love this remote control function.
The 6.39 吋 drop profile screen for Xiaomi 9 is a 2,340 x 1,080 FHD+ AMOLED panel from Samsung with a screen ratio of 90.7%. However, because of the relationship between the flat screens, the borders on the four sides still have a certain sense of existence. The effect of the full screen is slightly discounted, but in general it is an average level, giving a choice for friends who don't like curved screens. Xiaomi's screen is not calculated in the DCI-P3 color gamut like the mainstream competing products. It only supports 103.8% NTSC wide color gamut, making it difficult for people to directly compare the quality of this screen panel of Xiaomi 9. As far as the naked eye is concerned, although the color is not as bright as the Samsung Galaxy S10+, under the so-called Sun screen 2.0 support, the color has a high degree of reproduction, and the content can be displayed comfortably under the sun. Unfortunately, Xiaomi didn't get Netflix's HDR certification for this phone, so everyone can only watch HDR content on YouTube.
Compared to the extremely easy-to-contaminate back, the anti-staining and anti-fingerprint coating of the sixth-generation gorilla glass on the machine surface can be highlighted, and this is especially needed for Xiaomi 9 with fingerprint recognition function. . This time, Xiaomi chose the fifth-generation optical screen fingerprint, which has the characteristics of faster and higher recognition performance. It can be unlocked almost by pressing the finger at the corresponding approximate position. The use experience is very good. Xiaomi also uses this gesture to design, as long as he continues to hold down the screen after unlocking, he can start the shortcut key, directly enter the QR code camera, search, and increase the calendar. But why do you prefer to use the ultrasonic design of the screen under the ultrasonic fingerprinting scheme? The cost is naturally the biggest reason. After all, even this optical screen fingerprint module is too expensive for Lei Jun.
Xiaomi has a lot of ink on the camera part. After all, the main camera of Xiaomi 9 uses Sony's IMX586 sensor to bring 48MP high-definition pixels. The usual preset is to support the 4-in-1 function with 0.8μm pixels. 12MP photo. It is also equipped with a 12MP portrait with a Samsung S5K3M5 and a 2x optical zoom camera, and a 16MP 117° super wide-angle and macro camera with SONY IMX481. The camera of Xiaomi 9 incorporates multiple AI functions, including scene recognition, beauty, etc., as well as the "moon mode" for high-magnification digital zoom. Xiaobian but waited for a phase of the moon to shoot the moon, Xiaomi 9 will break through the original 10x zoom when starting the moon mode, can give up to 20 times the digital zoom. However, such a powerful magnifying photo, coupled with wind blowing, hand shock and other factors, can make a clear moon is a challenge. In general, the role of this moon mode is obvious, because it not only adjusts the illuminance contrast in real time, but also the color filter. Together, it can make a light spot that turns out to be recognized as the moon. .
First look at the performance of the most popular 48MP wide-angle main camera, its shooting speed is acceptable, but the color is too light, and the stereoscopic effect is not enough. Surprisingly, under the indoor lighting, this camera can also effectively control the noise and give a clean image. When shooting 48MP photos, there will be problems with lighter colors, but in exchange for clearer content (like signature text in urban scenery), it is also a need to balance composition and magnification.
The lens distortion problem of the ultra wide-angle camera is not serious, and there are also correction options for the human face in the settings. It seems that taking a group photo with multiple people is not a problem. In the late stage of the small evaluation, I just got the macro mode shot with the super wide-angle camera. I can also put the phone to a very close distance of 4cm to shoot. Compared with the macro mode of the main camera, there is a shorter focusing distance. The macro photo is finely imaged, and the f/2.2 aperture is not too blurry. Of course, thanks to the super wide-angle lens, it is suitable for shooting people's hands. After entering the exclusive mode, the portrait camera can have different depth of field and halo effects, but the effect is not attractive. It may be limited to the maximum simulation of f/1.0 aperture.
Millet 9 has 6GB RAM + 128GB UFS2.1 storage space, with Qualcomm Snapdragon 855 processor, hardware specifications comparable to other mainstream flagship. The 3,300mAh battery used is enough for one day, and it also supports 27W wired fast charge and 20W wireless fast charge. Note that the Xiaomi 9 package comes standard with only 18W wired charger. At the same time, it should be noted that this fast charging technology is not universal, so to get the fastest charging speed, it is necessary to spend a little more money on the Xiaomi home. Only then.
While writing the Xiaomi 9 evaluation, I was also distracted into other feature articles, just studying Bluetooth coding. Found Xiaomi 9 but supports Qualcomm TrueWireless Stereo Plus and aptX adaptive technology for Qualcomm's wireless headsets, which will provide better sound quality and connection stability when using compatible true wireless headphones. However, because there are still no related products on the market (or just a small series), they have not been tested.