Exterior design
Redmi K40 weighs 196g and is only 7.8mm thick, which is relatively thin at this level. In terms of color matching, Redmi K40 has three colors: bright black, clear snow, and fantasy. K40 Pro and K40 Pro+ have three colors: ink feather, clear snow, and fantasy. I personally prefer the clear snow and ink feather versions.
screen
The Redmi K40 screen uses Samsung’s 6.67-inch center-mounted perforated E4 straight screen (same as Xiaomi 11), with an aperture of only 2.76mm and a chin of 3.3mm, claiming to be the world’s smallest perforated screen. Screen specifications, 2400×1080 resolution, peak brightness up to 1300 nits, JNCD≈0.35, Δ≈0.35 received the highest rating of DisplayMate test A+, support MEMC dynamic image quality compensation, for low frame rate video content, pin up to 60fps.
In addition, it also supports 120Hz ultra-high refresh rate and 360Hz ultra-high touch sampling rate, and the industry’s first super-resolution touch, which increases the touch partition of the screen to 8 times 19200*8640, bringing more precise control.
Imaging system
In terms of shooting, Redmi K40 uses a 48 million triple camera combination, the main camera uses IMX582, 1/2-inch photosensitive components, supports 4K@30 frame recording, and is equipped with 8 million 119° ultra-wide-angle and 5 million telephoto macros. Equivalent to 50mm, to meet the basic daily use needs. Update: K40 front 20 million AI beauty camera, rear support 10x optical zoom.
The slightly higher-positioned Redmi K40 Pro uses a 64 million triple-camera combination. The main camera uses IMX686, 1/1.7-inch photosensitive components, a single pixel size of 0.8μm, supports pixel synthesis, and is equipped with 8 million ultra-wide-angle and 5 million telephoto Macro, to meet the basic daily use needs.
The higher-positioned Redmi K40 Pro+ main camera adopts Samsung HM2, upgraded from 64 million pixels in Pro version to 100 million pixels, 1/1.52 inch outsole photosensitive components, supporting pixel synthesis (9in1 up to 2.1μm) dark light imaging The effect is more excellent, the dual native ISO technology makes the light and shadow details richer, with 8 million ultra wide-angle and 5 million telephoto macro to meet the needs of daily use.
Core configuration
The lowest-positioned Redmi K40 is equipped with Qualcomm Snapdragon 870 mobile processing platform (7nm, 1 super, 3 large and 4 small core combinations), while the higher-positioned K40 Pro and K40 Pro+ are the latest new flagships released-Qualcomm Snapdragon 888
High-speed storage combination
It is worth mentioning that the K40 is equipped with 2750MHz LPDDR5 high-speed memory with a data transfer rate of 5500Mbps; while the stronger K40 Pro and K40 Pro+ are full-blooded LPDDR5 memory, the main frequency is further upgraded to 3200MHz, and the data transfer rate is 6400Mbps. All models are equipped with USF3.1 high-speed flash memory, combined with liquid-cooled three-dimensional heat dissipation, the overall performance is also excellent.
Battery life
The entire Redmi K40 series has a 4520mAh capacity battery, supports 33W wired fast charging, and can fully charge the phone in 52 minutes. The 33W is comparable to the 60W speed.
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