Redmi K40 Pro Review: Redmi’s Most Elegant Phone Yet With Snapdragon 888, 64MP Main Camera And 4520mAh Battery

    Redmi K40 Pro Review: On Feb. 25, Redmi unveiled its latest flagship smartphone lineup dubbed the Redmi K40 series. The phone offers a radically overhauled user experience, sound performance, and display.

    Adopting the strategy of many mobile phone manufacturers, the Redmi K40 series comprises medium, large, and super large variants including the Redmi K40, Redmi K40 Pro, and Redmi K40 Pro+. Considering the comprehensive price factor, the Redmi K40 Pro must be the most weighed-up one among the three models, and it is currently available for just $499 on Giztop.

    The most elegant Redmi phone yet

    Staying true to its promise to put more effort into the screen quality and lightness, as well as product ID design, the Redmi K40 Pro feels more refined and beautiful than most of the previous Redmi phones.

    The Redmi K40 Pro adopts a stepped design for the camera module. This helps minimize the prominence of the camera area to a considerable extent. The core design ideas are similar, however, the specific processing methods of the two products are considerably different.

    Moreover, the Redmi K40 Pro sports a more delicate look and feel, combining the white body of the Qingxue version with a series of changes. Aside from the Qingxue version, the Redmi comes in two colors ink feather, and fantasy.

    The Redmi K40 Pro’s body length is 163.7 mm, width is 76.4 mm and thickness is only 7.8 mm, which is more than 2 mm thinner than the previous generation, and the same level as OPPO Reno5 Pro. The phone also features bright-faced trims on both sides of the middle frame.

    When you turn the angle of view to the side, you will see the bright side of the button part has been wrapped around. The back cover of the Qingxue version uses AG glass technology, which is extremely delicate to touch.

    Top AMOLED direct screen, unique fingerprint design

    Redmi equipped the Redmi K40 Pro with a top-notch Samsung AMOLED direct screen. The phone has a 6.67-inch AMOLED straight screen, using a new E4 luminescent material, a resolution of 2400×1080, a 120Hz refresh rate, a peak brightness of 1300nit, a contrast ratio of 5000000:1, and a surface covering For the fifth-generation Corning Gorilla Glass.

    Each screen is color-calibrated before it leaves the factory. Although it is not a gaming phone, the touch sampling rate has reached or even surpassed some gaming phones at 360Hz. Redmi has also improved software optimization, with the AI master image quality engine.

    The AI master image quality engine has three aspects: super-resolution enhancement, video image quality enhancement, and dynamic picture compensation. This is probably due to battery life considerations. It is turned off by default, but you can manually turn it on.

    After Super-resolution enhancement is turned on, low-resolution videos can be enhanced to a higher level through algorithms. In addition to local album video sources, such as WeChat, iQiyi, Youku, Tencent Video, the application has also been adapted, with the list of support likely to increase in the future.

    The Redmi K40 Pro retains the front and rear dual-sensor brightness adjustment, which was supported by the Mi 10 series last year. Redmi has also included a True Tone true color display to it, enabling the phone to automatically adjust to a more comfortable color temperature display based on the change in ambient light.

    The phone has a screen opening of only 2.76 mm, which is smaller than the previous Vivo S5 screen opening. It can be touted as the smallest screen opening of all mass-produced models.


    The Redmi K40 Pro features a 20MP front camera, and both selfies and videos support beauty effects. The video mode supports 100-level AI beauty adjustment but does not support local beautification. Features such as face unlocking are supported.

    The rear-mounted camera adopts a three-shot design of the main camera, an ultra-wide-angle lens, macro lens, in which the main camera is a 64MP Sony IMX686 sensor, f/1.89 aperture; the ultra-wide-angle lens is 8MP, and the field of view is 119°. f/2.2 aperture, the other is previously highly acclaimed 5MP telephoto macro lens, there is no “make up” lens.

    Snapdragon 888, 33W fast charge, 4520mAh battery

    The Redmi K40 Pro is powered by the Snapdragon 888 flagship chip in the current Android camp, matching the full-blooded version of LPDDR5 memory and the data transfer rate can reach 6400Mbps, along with three storage combinations including 6GB +128GB, 8GB+128GB, and 8GB+256GB.

    The Snapdragon 888 chip uses Samsung’s 5nm EUV production process. The CPU adopts the familiar “1+3+4” design. In an AnTuTu and Master running test, the Redmi K40 Pro scored 872,820 points.

    As far as heat dissipation is concerned, the Redmi K40 series uses a liquid-cooled three-dimensional heat dissipation system, while the Redmi K40 series uses a liquid-cooled three-dimensional heat dissipation system. In terms of temperature changes of its fuselage, the area with higher heat generation is at the upper half of the camera.

    The temperature appears to rise with continued gaming, but overall performance is not bad. The battery capacity is lower than the previous generation, which is 4520mAh, making the body thinner and lighter.

    The Redmi K40 Pro matches only 33W fast charging (wireless charging is not supported), but the actual speed is very fast. The charging line chart above shows that it only takes 52 minutes to charge from the automatic shutdown state to 100 percent with the original wired charger, which is comparatively faster than most high-power fast charging speeds.


    With the K series products, Redmi has tried to include all elements of useful functionalities such as X-axis linear motors, full-featured NFC, dual stereo speakers (two-in-one speaker on the top), and infrared remote control. Moreover, it supports an enhanced version of Wi-Fi 6 and a new generation of Bluetooth protocol due to which data transmission capabilities are also stronger.

    With Snapdragon 888 under the hood and a reasonable 2799 yuan price tag, the Redmi K40 Pro brings the pricing to a generally acceptable level. You can visit this link to purchase the Redmi K40 Pro for $499 from Giztop.


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