In terms of appearance, the Redmi K40 adopts a full screen with a hole dug in the center. Even though the black edges of the left and right sides and chin are still clearly visible, the visual effect of the front light is quite shocking. The high refresh rate of 120HZ supports adaptive adjustment, and the daily browsing of the web is also very smooth. Thanks to the mature gesture operation logic of MIUI 12 system, it is easy to touch by mistake. In addition, K40 has also added "true sound display" technology similar to iPhone. The color information of ambient light can be detected by multiple internal sensors. The only regret is that the starter does not support DC dimming, and the function is not perfect. However, it is expected that the function will be continuously modified through the later system upgrade to further enhance the competitiveness.
As for the back, K40 series has three colors, except bright black, sunshine and snow, and dreamland are the back covers of AG technology. Although this bright black is a fingerprint collector, it also brings a ceramic-like texture, and its face value is not too bad. The white version will be more durable.
In terms of performance, the Redmi K40 equipped with Qualcomm Snapdragon 870 processor can fully cope with daily office, entertainment and games. This SOC is between Snapdragon 888 and Xiaolong 650+, and it is one of the most popular flagship chips at present. It also has LPDDR5 and UFS 3. 1 memory, and Ann Bunny easily broke through 680,000.
The system has always been Xiaomi's strength. So far, the system optimization of Redmi K40 feels good, and there are not as many bugs as reported on the Internet. Maybe MIUI 12 is a bit lacking in stability, but MIUI 12.5 will be updated soon, and the problem should be solved by then.
It is worth noting that Redmi K40 series all use side fingerprint buttons instead of screen fingerprints. It is worth mentioning that the addition of Dolby panoramic sound dual speakers is obvious to upgrade the audio-visual experience.
Talking about battery life, Redmi K40 is equipped with 4520mA battery, which is relatively safe. After the actual test, it was found that the continuous power consumption for three hours decreased from 100% to 37%, and it was no problem to use it for one day. Need to be reminded that Redmi K40 is equipped with a 33W wired charger, including the last trickle charging time, which takes about 57 minutes.
The main camera of Redmi K40 is 48 million pixels of Sony IMX582, supplemented by a rear three-camera scheme consisting of 5 million telephoto macro and 8 million super wide angle. From the data alone, the image configuration of Redmi K40 is more comprehensive, but in order to measure the image power of mobile phones, real shooting test is still indispensable. You can refer to the following certificates.
Redmi K40 can accurately manage the physical room in the case of sufficient light during the day, and even in the backlight scene, its dark details are kept in place.
At night, when the Redmi K40 is in the standard mode, the photo's light perception is also remarkable. After the night shooting mode is turned on, the suppression of highlights is more in place. Even if there is room for further optimization in some scenes, the resolution is already first-class.
On the whole, judging from the overall feeling of using Redmi K40 during this period, it is a mobile phone with obvious advantages and disadvantages. It is polished in screen, performance, battery life and image. Side fingerprints and lack of DC dimming are some imperceptible elements, so if your current budget is only about 2,000 yuan, it should be a good choice.