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Home > New Gear > Redmi K30 review: 120Hz screen offers ultra smooth experience
Redmi K30 review: 120Hz screen offers ultra smooth experience

Redmi K30 review: 120Hz screen offers ultra smooth experience

By  Goraud Mazanec 2019-12-10 6292 0

As a new member of the Redmi family, Redmi K30 has brought a lot of improvement in appearance design, screen quality, photography and so on on the premise of continuing the cost-effective gene of the family. As the first mobile phone with 120Hz screen in the Redmi or even Xiaomi family, the Redmi K30 can be said to pull the word "smooth" from the hardware level such as CPU to the front of the screen, making our fingers feel more smooth and smooth than ever before. So how does this phone perform? let me tell you slowly.

Redmi K30

Redmi K30 4G version: main specs


Redmi K30 4G


6.67-inch dual punch-hole screen

Screen resolution

2400 x 1080 FHD+

Screen refresh rate

Max 120Hz


Qualcomm Snapdragon 730G

Rear camera

● 64MP primary lens, 1/1.7” photosensitive area, f/1.89 aperture

● 8MP ultra wide angle lens, FOV 120 degree, f/2.2 aperture

● 5MP macro lens, FOV 83 degree, f/2.4 aperture

● 2MP depth lens, FOV 83 degree, f/2.4 aperture

Front camera

20MP main lens + 2MP portrait blur lens

Operating system



6GB / 8GB


64GB / 128GB / 256GB, UFS 2.1

Battery capacity


Fast charging

27W fast charging

3.5mm headphone jack


Multifunctional NFC


Dual punch-hole screen with the support of 120Hz refresh rate

After its independence, the Redmi series has obviously become a vanguard in the application of design language and technology. This time, the Redmi K30 is no exception, with an elegant double-hole full screen, which greatly increases the phone's appearance and screen share. Taking a comprehensive view of the intelligent models on the market at present, under the spring tide of the comprehensive screen, they each come up with strange tricks and eight Immortals cross the sea. This time Redmi K30 introduced the design of "hole digging screen", which is believed to have been considered from many angles of experience and beauty.

Redmi K30

Digging screen is actually very common nowadays. The Redmi K30 puts the hole in the upper right corner. As for whether the asymmetrical design is good-looking, it is a matter of opinion. The editor just wants to say that despite the hole-digging design, the Redmi K30 looks very good with its narrow frame, rounded screen edges and high screen ratio.

The screen on the front of the Redmi K30 is 6.67 inches in size and at 20:9, it looks very slender. Due to the use of TOF packaging technology, the screen share has reached 91%. Coupled with its slender proportion and rounded frame, the Redmi K30 has a "sense of control" at first hand, and the touch-controlled area of the thumb with one hand is significantly larger. It is true that the thickness of the 8.79mm 's fuselage is not light and thin, but it does not sacrifice too much grip because of the problem of proportion.

In addition, after generations of upgrading, hole-digging technology has also ushered in an upgrade in terms of technology and durability. The Redmi K30 around the screen digging holes through a higher density of LCD support, the use of low-deformation polarizer protection, and secondary dispensing technology, can effectively avoid the yellowing problem after long-term use; and through the liquid crystal panel overall nickel plating, optimize the backlight structure, can avoid the problem of edge light leakage.

Coming to the point, the Redmi K30 uses a screen with 120Hz refresh rate, which is the first time for Xiaomi phones. This flow screen with 120Hz refresh rate supports the highest 120fps display and can display up to 120 pictures per second, far exceeding the current traditional 60Hz screen. Every second, more pictures can be displayed in the sliding of the screen, which makes the sliding of the screen more smooth. Whether it is words or games, can reduce the sense of shadow.

Redmi K30 120Hz screen refresh rate

Through the comparison of our slow-motion video, we can clearly see that the frame rate of Redmi K30 on the right side is higher during the sliding process, and the fluency and coherence of text and pictures are better. In fact, just watching may not feel the difference, but as long as you have experienced the smoothness of the 120Hz screen, you can never go back!

Due to the use of LCD's digging screen, the Redmi K30 places fingerprint identification on the right side of the fuselage. For most right-handed users, it is as convenient as on-screen fingerprint technology. For people like me who are left-handed, it may be a little uncomfortable. Fortunately, Redmi K30 supports face recognition, but you still need to switch back to fingerprint when you pay, so the continuity is somewhat fragmented.

Redmi K30 side-mounted fingerprint sensor

Just look at the front and side, in fact, the design highlight of the Redmi K30 is behind. The space on the back of the mobile phone is so large, but there are so many elements to be placed, how to arrange and combine has become the most aesthetic test. Before the release, netizens said of the official photo of the Redmi K30 that it was a bit like a "coin machine". But in fact, behind the hands, the circular design around the four pictures actually adds a bit of the charm of traditional Chinese architecture to the back of the fuselage.

Redmi K30 64MP quad rear cameras

Xiaomi said the design was inspired by the traditional Chinese-style circular "arch", symbolizing the concept of "round heaven and earth" in traditional Chinese culture. The back of the four cameras, respectively arranged according to size, with round embellishment, I think it is still very good-looking. In addition, the Redmi K30's back follows a perfectly symmetrical design with a bit more harmony.

Redmi K30 camera

Overall, the Redmi K30 has done a lot of work in terms of appearance and design. Whether it is a two-hole full screen or a 120Hz screen, Redmi is intimate to the user experience everywhere. As for whether the side fingerprints are practical and whether the four-photo arrangement is in line with your aesthetic taste, it can only be said that each radish and cabbage has its own preference.

Redmi K30 camera samples and performance

The Redmi K30 launches Sony's new IMX686 sensor with 64 million ultra-high pixels. The sensor has a photosensitive area of up to 1.7in, supports Remosaic output of 64 million ultra-clear photos, and a resolution of up to 9248 x 6944. it can record more details and is convenient for second cropping creation.

Redmi K30 camera samples

Redmi K30 64MP camera sample

Through the actual measurement, we found that after turning on the 64 million mode, the size of the photo taken by Redmi K30 is as high as 33MB, and the local details are still clear after several magnification. The texture of the architectural glass, the texture of the steel bar and the internal architectural details in the sample are still clearly visible.

Redmi K30 camera samples

Similarly, in this picture, the window in part of the building can still see the folds on the curtains and even some of the interior details after being enlarged many times. In addition, the texture on the wall is also clearly discernible.

Redmi K30 camera samples

Redmi K30 camera samples

Redmi K30 ultra-wide angle camera sample

Not only that, the Redmi K30 also has a 8 million-pixel ultra-wide angle, 2 million macro and a 2 million depth-of-field lens. The addition of the ultra-wide-angle lens can expand your range of view while providing more depth and tension for the picture.

Redmi K30 camera samples

Another depth-of-field lens can capture the virtual effect of a large aperture of a simulated DSLR. It is suitable for both people and objects, and it is very suitable for shooting in a scene with a cluttered background.

Redmi K30 camera samples

Not only that, in the shooting of food, flowers and other scenery, the system can also be automatically optimized for it. The Redmi K30 performs well in color and the white balance is also very accurate.

In terms of night view, Redmi K30 also supports night scene mode, which can retain the brightness and details of the picture while maintaining the brightness and details of the picture through long exposure. Although the haze is serious on the day of shooting, we can see that the architectural details in the distance are clear and the noise in the sky is well controlled.

Redmi K30 night shooting camera samples

Redmi K30 night mode shooting

Even in the case of strong light and dark contrast, the Redmi K30 can still retain the details of the picture and suppress the highlights, making the picture pure and clear.

Finally, let's take a look at macro mode. The Redmi K30 can not only Hold big scenes, but also record details at small distances. Under the premise that the distance between the phone and the object is only 3 or 4 centimeters, it can still focus and shoot the details of the object clearly.

Redmi K30 macro lens shooting camera samples

Redmi K30 macro lens shooting

Redmi K30 4G version CPU performance

In terms of hardware, the Redmi K30 4G version is equipped with a Qualcomm Snapdragon 730G processor, which uses the process technology of 8nm, and the Kryo 470 CPU, significantly improves the computing power of AI. Not only that, compared with Snapdragon 710 and CPU, the performance is improved by 35%, and the graphics computing performance is improved by 25%. Especially under the blessing of "G", this chip has been specially optimized for the game, and the performance of graphics computing has been further improved.

Not only that, the Redmi K30 also has liquid-cooled cooling technology, which is rare in models in the same price range. For those users who love games, it is definitely a boon. In addition, the Redmi K30 also has a large 4500mAh battery and supports 27W fast charging, which officials say can be fully charged in 68 minutes. The combination of large battery and fast charge, away from home can quickly recharge the blood of the mobile phone.

Redmi K30

Bottom line

Overall, as a mid-to-high-end model, the Redmi K30 has the advantages of the only 120Hz screen in the same price range, four shots on the back, and a comprehensive screen for digging holes. The exquisite workmanship coupled with the consistently high performance-to-price ratio of the Redmi series have added an attractive atmosphere to this mobile phone. From the perspective of several products after the independence of the Redmi series, Xiaomi has devoted all its resources, technology, manpower and material resources to continue the mission of pursuing the ultimate performance-to-price ratio. And this Redmi K30 is another excellent work that carries out the word "performance-to-price ratio".

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