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Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) Review | 197 Data compared

Avg. price in UK: ~£300
Avg. price in US: ~$420
RAM capacity: 12 GB
Internal storage: 256 GB
Screen size: 6.67 inches
Main camera megapixels: 64 MP & 8 MP & 2 MP

Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) review. Compare 197 technical specifications and user reviews to see how this product ranks in the Smartphones category and whether it is worth buying.

6.8

Good

6.8

Good

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Best prices in UK

N/A~ £300

Best rankings

Verdict

The Xiaomi Redmi K40 Gaming Edition is a powerful smartphone designed specifically for mobile gaming enthusiasts, featuring a high-performance MediaTek Dimensity 1200 processor and a smooth 120Hz 6.67-inch AMOLED display with HDR10+ support. Its core strengths include a substantial 12GB of RAM and 256GB of storage, a robust 5,065mAh battery with rapid 67W fast charging, a capable 64MP main camera, and crucial dedicated gaming features like physical pop-up shoulder triggers and JBL-tuned stereo speakers. Potential drawbacks often cited are the lack of a headphone jack and a less versatile camera system compared to dedicated photography-focused flagships.

Technical Specifications of smartphone Xiaomi Redmi K40 Gaming Edition (12GB + 256GB)

Overall score

6.8

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Popularity

What it is: An indicator based on the number of reviews received by the smartphone.

When it matters: When you prefer to purchase a product chosen and reviewed by many other consumers.

Performance & Hardware

7.3

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Brand name

What it is: The manufacturer or brand under which the smartphone is marketed and sold.

When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

Importance: LOW

Xiaomi

Processor model

What it is: The central System-on-Chip (SoC) that houses the CPU, GPU, modem, and other core processing components.

When it matters: When you want to know the specific engine powering your device's speed and features.

Importance: HIGH

RAM capacity

What it is: The amount of volatile memory available for running apps and multitasking.

When it matters: When you use multiple apps at once or want smoother multitasking without reloads.

Importance: HIGH

Good value: >12 GB

Internal storage

What it is: The total built-in space available for apps, media, and files.

When it matters: When you keep large libraries of photos, videos, and apps directly on your device.

Importance: MEDIUM

Good value: >256 GB

CPU boost clock speed

What it is: The maximum speed the processor can achieve temporarily under heavy load.

When it matters: When you run demanding apps or games that require short bursts of peak performance.

Importance: MEDIUM

Good value: >3.2 GHz

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Software

4.1

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Operating system

What it is: The primary system software that manages the smartphone's hardware and software resources.

When it matters: When you have a preference for the user interface and app ecosystem.

Importance: MEDIUM

Android version

What it is: The specific generation number of the Android operating system installed on the device.

When it matters: When you want to ensure app compatibility and access to the latest software features.

Importance: LOW

Direct OS updates

What it is: Indicates whether the device receives operating system updates directly from the manufacturer or Google, ensuring timely security and feature updates.

When it matters: When you want the fastest access to new features and security patches.

Importance: LOW

Open-source OS

What it is: Shows whether the device’s operating system is based on open-source code, allowing community contributions and greater transparency.

When it matters: When you value transparency and potential community-driven modifications.

Importance: LOW

Dark mode

What it is: A display option that uses dark backgrounds to reduce eye strain and save battery on OLED screens.

When it matters: When you want to reduce eye strain at night or save battery on OLED screens.

Importance: LOW

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Camera

6.4

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Multi-lens main camera

What it is: Indicates that the rear camera system includes multiple lenses (e.g., wide, ultra-wide, telephoto) for versatile shooting options.

When it matters: When you want versatility to shoot wide landscapes, standard shots, and zoomed details.

Importance: LOW

Main camera megapixels

What it is: The resolution of the primary rear camera sensor, measured in millions of pixels (MP). Higher megapixels can capture more detail.

When it matters: When you want to capture high-resolution images that can be cropped or printed large.

Importance: MEDIUM

Good value: >50 MP

Main camera aperture

What it is: The size of the lens opening (f-stop) that controls light entry. A lower f-number indicates a wider aperture, allowing better low-light shots.

When it matters: When you want better low-light performance or a natural background blur effect.

Importance: MEDIUM

Main camera sensor area

What it is: The total physical surface area of the camera sensor (calculated by multiplying the number of megapixels by the square of the individual pixel size). A larger area captures more light, resulting in better night photos and less digital noise.

When it matters: When you want to capture clear, detailed photos in low-light conditions with minimal grain and achieve a natural, professional-looking background blur for portraits.

Importance: HIGH

Good value: >60

Main camera pixel size

What it is: The physical size of individual pixels on the camera sensor, measured in micrometers. Larger pixels typically capture more light for better low-light performance.

When it matters: When you shoot in low light and want reduced noise in your photos.

Importance: LOW

Good value: ≥1.2 µm

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Connectivity

7.8

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Number of SIM slots

What it is: The number of physical SIM cards or eSIM profiles the device can support simultaneously.

When it matters: When you need to manage two different phone numbers or travel internationally with a local SIM.

Importance: LOW

Good value: ≥2

Cellular module

What it is: The hardware component capable of connecting to mobile cellular networks for voice and data.

When it matters: When you need to stay connected to calls and internet away from Wi-Fi.

Importance: LOW

5G connectivity

What it is: Support for the fifth generation of mobile network technology, offering significantly faster data speeds and lower latency.

When it matters: When you need the fastest possible mobile data speeds for streaming and downloading on the go.

Importance: LOW

LTE support

What it is: Support for Long-Term Evolution (4G) networks, providing high-speed mobile data.

When it matters: When you need reliable mobile internet coverage in areas where 5G isn't available.

Importance: LOW

Wi-Fi connectivity

What it is: The ability to connect to wireless local area networks for internet access and local networking.

When it matters: When you want to save mobile data and connect to home or public networks.

Importance: LOW

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Display

7.3

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Screen size

What it is: The physical diagonal measurement of the display area, usually expressed in inches.

When it matters: When you choose between a compact phone for one-handed use or a large screen for media.

Importance: LOW

Good value: ≥6.6 inches

Screen resolution

What it is: The total number of pixels displayed on the screen, expressed as width x height, determining sharpness.

When it matters: When you want crisp text and sharp details in photos and videos.

Importance: MEDIUM

Pixel density

What it is: The concentration of pixels on the display, measured in pixels per inch (PPI), affecting image clarity.

When it matters: When you want the image to look perfectly smooth with no visible pixels.

Importance: LOW

Good value: >400 ppi

Display type

What it is: The specific technology used for the screen panel (e.g., OLED, IPS LCD), influencing contrast, color, and efficiency.

When it matters: When you care about vibrant colors, deep blacks, and battery efficiency.

Importance: MEDIUM

Refresh rate

What it is: The number of times per second the display updates the image, measured in Hertz (Hz); higher rates offer smoother motion.

When it matters: When you want scrolling to feel fluid and games to look smoother.

Importance: MEDIUM

Good value: ≥120 Hz

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Battery

6.7

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Battery capacity

What it is: The amount of electric charge the battery can hold, measured in milliampere-hours (mAh).

When it matters: When you want a general idea of how large the battery is physically.

Importance: HIGH

Good value: >5000 mAh

Charging speed

What it is: The maximum power input supported for wired charging, measured in Watts (W).

When it matters: When you are in a rush and need to top up your battery quickly.

Importance: MEDIUM

Good value: >60 W

Fast charging

What it is: In the context of modern electronics, "Fast Charging" refers to any technology that delivers power significantly higher than the traditional USB baseline. While the industry standard for a basic charger is 5W (5V at 1A), a charger is generally classified as a fast charger if it provides at least 18W of power.

When it matters: When you want to minimize the time your phone spends tethered to a wall outlet.

Importance: LOW

GSMArena full wired charge time

What it is: The time taken to charge the battery from 0% to 100% using the bundled or recommended charger, as measured by GSMArena.

When it matters: When you want to know exactly how long it takes to charge from 0 to 100% in real-world tests.

Importance: LOW

Good value: <45 min

Wireless charging

What it is: The ability to charge the battery without cables by placing the device on a compatible charging pad.

When it matters: When you prefer the convenience of dropping your phone on a pad without fumbling with cables.

Importance: LOW

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Audio

7.8

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Stereo speakers

What it is: A setup involving two or more speakers to create a left-right audio separation for immersive sound.

When it matters: When you watch videos or play games without headphones and want immersive sound.

Importance: LOW

3.5 mm headphone jack

What it is: A standard analog audio port for connecting wired headphones or auxiliary cables.

When it matters: When you prefer using traditional wired headphones without dongles or adapters.

Importance: LOW

Number of microphones

What it is: The total count of microphones on the device, used for audio recording, noise cancellation, and voice isolation.

When it matters: When you want clear audio recording and better noise cancellation during calls.

Importance: LOW

Good value: ≥3

FM radio

What it is: A built-in receiver allowing users to listen to local FM radio stations using wired headphones as an antenna.

When it matters: When you want to listen to local radio stations without using mobile data.

Importance: LOW

aptX Lossless

What it is: A Bluetooth technology designed to deliver CD-quality audio without data loss during transmission.

When it matters: When you demand CD-quality audio over Bluetooth with no loss of detail.

Importance: LOW

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Design

5.9

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Height

What it is: The vertical dimension of the device.

When it matters: When you are concerned about whether the phone will fit in your pocket or purse.

Importance: LOW

Good value: <162 mm

Width

What it is: The horizontal dimension of the device when held in portrait orientation.

When it matters: When you care about how easy the phone is to grip and use with one hand.

Importance: LOW

Good value: <75 mm

Thickness

What it is: The depth of the device profile, excluding the camera bump unless specified.

When it matters: When you prefer a sleek, slim profile that slides easily into tight pockets.

Importance: LOW

Good value: <8 mm

Weight

What it is: The total mass of the smartphone, affecting how heavy it feels in the hand.

When it matters: When you want a phone that feels light in your pocket or substantial in your hand.

Importance: LOW

Good value: <190 g

Device volume

What it is: The calculated total volume of the device's physical body.

When it matters: When you want to understand the overall physical bulk of the device.

Importance: LOW

Good value: <98cm³

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Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) vs the average smartphone

Why is Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) better than the average smartphone?

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66.7% lower TDP
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a lower TDP than the average smartphone (10 W vs 6 W). The average TDP for smartphones is 6 W.
What it is: The amount of heat a processor is expected to generate under typical use, measured in watts. It helps determine cooling requirements.
When it matters: When you are concerned about how much heat the device generates under load.
Importance: MEDIUM
Good value: >9 W
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a lower TDP than the average smartphone (10 W vs 6 W). The average TDP for smartphones is 6 W.10 W vs 6 W
4 GB more RAM
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has more RAM capacity than the average smartphone (12 GB vs 8 GB). The average smartphone has 8 GB of RAM.
What it is: The amount of volatile memory available for running apps and multitasking.
When it matters: When you use multiple apps at once or want smoother multitasking without reloads.
Importance: HIGH
Good value: >12 GB
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has more RAM capacity than the average smartphone (12 GB vs 8 GB). The average smartphone has 8 GB of RAM.12 GB vs 8 GB
2.03x faster charging speed
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports a faster charging speed than the average smartphone (67 W vs 33 W). The average charging speed is 33 W.
What it is: The maximum power input supported for wired charging, measured in Watts (W).
When it matters: When you are in a rush and need to top up your battery quickly.
Importance: MEDIUM
Good value: >60 W
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports a faster charging speed than the average smartphone (67 W vs 33 W). The average charging speed is 33 W.67 W vs 33 W
25% higher CPU boost clock speed
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a higher CPU boost clock speed than the average smartphone (3 GHz vs 2.4 GHz). The average smartphone has a boost clock speed of 2.4 GHz.
What it is: The maximum speed the processor can achieve temporarily under heavy load.
When it matters: When you run demanding apps or games that require short bursts of peak performance.
Importance: MEDIUM
Good value: >3.2 GHz
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a higher CPU boost clock speed than the average smartphone (3 GHz vs 2.4 GHz). The average smartphone has a boost clock speed of 2.4 GHz.3 GHz vs 2.4 GHz
2x higher touch sampling rate
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a higher touch sampling rate than the average smartphone (480 Hz vs 240 Hz). The average touch sampling rate is 240 Hz.
What it is: The frequency at which the screen scans for touch input, with higher rates reducing input lag in games.
When it matters: When you play competitive games and need your inputs to register instantly.
Importance: LOW
Good value: >300 Hz
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a higher touch sampling rate than the average smartphone (480 Hz vs 240 Hz). The average touch sampling rate is 240 Hz.480 Hz vs 240 Hz
Supports Dolby Vision support
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports Dolby Vision, the average smartphone does not. 17.3% of smartphones are Dolby Vision compatible.
What it is: A proprietary HDR format that provides superior color depth and dynamic scene optimization for supported content.
When it matters: When you watch premium streaming content and want cinema-quality color and brightness.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports Dolby Vision, the average smartphone does not. 17.3% of smartphones are Dolby Vision compatible.
Supports HDR10+ support
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports HDR10+, the average smartphone does not. 22.2% of smartphones include HDR10+ support.
What it is: Enhanced HDR format support that uses dynamic metadata to optimize brightness and contrast scene by scene.
When it matters: When you want the best possible picture quality with scene-by-scene optimization in supported video.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports HDR10+, the average smartphone does not. 22.2% of smartphones include HDR10+ support.
Supports HDR10 support
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports HDR10, the average smartphone does not. 42.7% of smartphones are HDR10 compatible.
What it is: Compatibility with the HDR10 format for displaying high dynamic range video content.
When it matters: When you stream compatible movies and want to see richer colors and dynamic contrast.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports HDR10, the average smartphone does not. 42.7% of smartphones are HDR10 compatible.
66.7% lower TDP
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a lower TDP than the average smartphone (10 W vs 6 W). The average TDP for smartphones is 6 W.
4 GB more RAM
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has more RAM capacity than the average smartphone (12 GB vs 8 GB). The average smartphone has 8 GB of RAM.
25% higher CPU boost clock speed
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a higher CPU boost clock speed than the average smartphone (3 GHz vs 2.4 GHz). The average smartphone has a boost clock speed of 2.4 GHz.
Higher CPU base clock speed
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a higher CPU base clock speed than the average smartphone (1x3 GHz & 3x2.6 GHz & 4x2 GHz vs 2x2.2 GHz & 6x2 GHz). The average smartphone has a base clock speed of 2x2.2 GHz & 6x2 GHz.
55.1% faster memory speed
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports faster memory speed than the average smartphone (4,266 MHz vs 2,750 MHz). The average smartphone supports 2,750 MHz memory speed.
2x more L3 cache
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has more L3 cache than the average smartphone (8,192 KB vs 4,096 KB). The average L3 cache is 4,096 KB.
2.25x more shader units
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) features more shader units than the average smartphone (576 vs 256). The average smartphone has 256 shader units.
14.3% higher maximum RAM
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports more maximum RAM than the average smartphone (16 GB vs 14 GB). The average smartphone supports 14 GB RAM.
36.2% higher 3DMark Wild Life benchmark
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) scores higher in 3DMark Wild Life than the average smartphone (4,244 vs 3,115). The average smartphone scores 3,115.
8.4% higher PCMark Work 3.0 Performance benchmark
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a higher PCMark Work 3.0 performance score than the average smartphone (11,688 vs 10,783). The average score is 10,783.
25.1% higher Geekbench 6 multi-core benchmark score
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) scores better in Geekbench 6 multi-core than the average smartphone (3,170 vs 2,533). The average smartphone scores 2,533 in multi-core.
11.9% higher Geekbench 6 single-core benchmark score
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) scores better in Geekbench 6 single-core than the average smartphone (1,054 vs 942). The average smartphone scores 942 in single-core.
Supports RAW photo capture
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports RAW photo capture, the average smartphone does not. 37.1% of smartphones allow RAW files.
Higher-resolution main camera
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a higher main camera resolution than the average smartphone (64 MP & 8 MP & 2 MP vs 50 MP & 8 MP). The average smartphone main camera has 50 MP & 8 MP megapixels.
Supports Dolby Vision video recording
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports Dolby Vision video recording, the average smartphone does not. 10.7% of smartphones support Dolby Vision.
Allows manual shutter speed
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) allows manual shutter speed control, the average smartphone does not. 29.8% of smartphones include this.
Supports HDR10 video recording
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports HDR10 video recording, the average smartphone does not. 35.9% of smartphones support HDR10.
Wider main camera aperture
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a wider main camera aperture than the average smartphone (f/1.7 & f/2.2 & f/2.4 vs f/1.8 & f/2.2 & f/2.4 & f/2.4). The average smartphone has a main camera aperture of f/1.8 & f/2.2 & f/2.4 & f/2.4.
Newer Wi-Fi version
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports a newer Wi-Fi version than the average smartphone (Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n) vs Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)). The average smartphone uses Wi-Fi Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n).
Has a barometer
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) features a barometer, the average smartphone does not. 19.9% of smartphones include a barometer.
Has an infrared sensor
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) includes an infrared sensor, the average smartphone does not. 33.3% of smartphones feature an IR blaster.
2x higher touch sampling rate
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a higher touch sampling rate than the average smartphone (480 Hz vs 240 Hz). The average touch sampling rate is 240 Hz.
Supports Dolby Vision support
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports Dolby Vision, the average smartphone does not. 17.3% of smartphones are Dolby Vision compatible.
Supports HDR10+ support
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports HDR10+, the average smartphone does not. 22.2% of smartphones include HDR10+ support.
Supports HDR10 support
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports HDR10, the average smartphone does not. 42.7% of smartphones are HDR10 compatible.
Has an always-on display
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) features an always-on display, the average smartphone does not. 49.2% of smartphones offer always-on functionality.
2.03x faster charging speed
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports a faster charging speed than the average smartphone (67 W vs 33 W). The average charging speed is 33 W.
20 min faster GSMArena full wired charge time
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a faster GSMArena full wired charge time than the average smartphone (42 min vs 62 min). The average charge time is 62 min.
1.3% larger battery capacity
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a larger battery capacity than the average smartphone (5,065 mAh vs 5,000 mAh). The average smartphone battery is 5,000 mAh.
Supports aptX Adaptive
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) supports aptX Adaptive, the average smartphone does not. 34.5% of smartphones include aptX Adaptive support.
1 more microphone/s
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has more microphones than the average smartphone (3 vs 2). The average smartphone has 2 microphones.
1.7 mm shorter
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) is shorter than the average smartphone (161.9 mm vs 163.6 mm). The average smartphone height is 163.6 mm.

Performance & Hardware

Why is Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) worse than the average smartphone?

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Worse processor
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) uses a worse processor than the average smartphone (MediaTek Dimensity 1,200 vs Qualcomm Snapdragon 7 Gen 3).
26.2% lower 3DMark Steel Nomad benchmark
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) performs worse in 3DMark Steel Nomad than the average smartphone (449 vs 608). The average smartphone scores 608.
No live text recognition
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support live text recognition, the average smartphone does. 50.9% of smartphones offer real-time text recognition.
No location privacy controls
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not offer location privacy controls, the average smartphone does. 88% of smartphones include location privacy features.
Lacks app tracking protection
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have app tracking protection, the average smartphone does. 70.2% of smartphones include app tracking protection.
Lacks focus mode
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have a focus mode, the average smartphone does. 60.4% of smartphones include a dedicated focus mode.
No camera/mic privacy toggles
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) lacks camera and microphone privacy toggles, the average smartphone includes them. 87% of smartphones offer these toggles.
Older Android version
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) runs an older Android version than the average smartphone (Android 11 vs Android 14). The average smartphone runs Android version Android 14.
No Wi-Fi password sharing
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support Wi-Fi password sharing, the average smartphone does. 57.9% of smartphones allow easy Wi-Fi sharing.
No battery health monitoring
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) lacks battery health monitoring, the average smartphone includes it. 66.3% of smartphones provide battery health stats.
Does not allow app offloading
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support app offloading, the average smartphone does. 51.9% of smartphones support app offloading to save space.
Lacks instant markup
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support instant markup, the average smartphone does. 52.2% of smartphones include instant markup tools.
No scrolling screenshot support
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support scrolling screenshots, the average smartphone does. 81.1% of smartphones allow scrolling screenshots.
No theme customization
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support theme customization, the average smartphone does. 91% of smartphones allow theme customization.
No offline voice commands
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support offline voice commands, the average smartphone does. 90.4% of smartphones offer offline voice control.
Does not allow play while downloading
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) cannot play games while downloading, the average smartphone can. 77.3% of smartphones support play-while-downloading.
No dynamic theme support
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support dynamic themes, the average smartphone does. 81.9% of smartphones support dynamic theming.
Lacks extra dim mode
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have extra dim mode, the average smartphone does. 82.5% of smartphones offer extra dimming features.
0.1 µm smaller main camera pixel size
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a smaller main camera pixel size than the average smartphone (0.7 µm vs 0.8 µm). The average smartphone has a pixel size of 0.8 µm.
Narrower front camera aperture
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a narrower front camera aperture than the average smartphone (f/2.4 vs f/2.2). The average smartphone front aperture is f/2.2.
1.9% smaller main camera sensor area
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a smaller main camera sensor area than the average smartphone (31.4 mm² vs 32 mm²). The average smartphone sensor area is 32 mm².
No memory card slot
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have a memory card slot, the average smartphone does. 53.5% of smartphones feature expandable storage.
500 nits lower peak brightness
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a lower peak brightness than the average smartphone (500 nits vs 1,000 nits). The average smartphone peak brightness is 1,000 nits.
24.2% lower screen brightness
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a lower screen brightness than the average smartphone (500 nits vs 660 nits). The average smartphone has a brightness of 660 nits.
17.6% lower PCMark Work 3.0 battery benchmark
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) scores lower in PCMark Work 3.0 battery benchmark than the average smartphone (648 min vs 786 min). The average smartphone scores 786 min.
Lower IP rating
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a lower IP rating than the average smartphone (IP53 vs IP67). 0% of smartphones have a higher IP rating.
3 year/s older release date
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) is an older model than the average smartphone (2021 vs 2024). 3% of smartphones were released more recently.
April 2021
4.5% heavier
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) is heavier than the average smartphone (205 g vs 196.2 g). The average smartphone weighs 196.2 g.
0.9 mm wider
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) is wider than the average smartphone (76.9 mm vs 76 mm). The average smartphone has a width of 76 mm.
No live text recognition
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support live text recognition, the average smartphone does. 50.9% of smartphones offer real-time text recognition.
What it is: A feature that can identify and extract text from images, camera viewfinder, or documents in real-time for copying, translating, or other actions.
When it matters: When you need to quickly copy text from a physical document or sign using your camera.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not support live text recognition, the average smartphone does. 50.9% of smartphones offer real-time text recognition.
No memory card slot
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have a memory card slot, the average smartphone does. 53.5% of smartphones feature expandable storage.
What it is: A physical slot, usually for microSD cards, allowing users to expand the device's storage capacity.
When it matters: When you want to cheaply expand your storage for photos, music, and movies.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have a memory card slot, the average smartphone does. 53.5% of smartphones feature expandable storage.
Lacks app tracking protection
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have app tracking protection, the average smartphone does. 70.2% of smartphones include app tracking protection.
What it is: A system-level feature that limits how apps track user behavior across other apps and services.
When it matters: When you want to stop apps from following your activity across other companies' apps and websites.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have app tracking protection, the average smartphone does. 70.2% of smartphones include app tracking protection.
No location privacy controls
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not offer location privacy controls, the average smartphone does. 88% of smartphones include location privacy features.
What it is: A privacy feature that allows users to control which apps have access to location data and when they can use it.
When it matters: When you want to control exactly when and how apps track your physical movements.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not offer location privacy controls, the average smartphone does. 88% of smartphones include location privacy features.
Lacks focus mode
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have a focus mode, the average smartphone does. 60.4% of smartphones include a dedicated focus mode.
What it is: A feature that helps users reduce distractions by filtering notifications, limiting app access, or customizing the interface during specific activities or time periods.
When it matters: When you need to silence distractions to concentrate on work or rest.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) does not have a focus mode, the average smartphone does. 60.4% of smartphones include a dedicated focus mode.
Lower IP rating
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a lower IP rating than the average smartphone (IP53 vs IP67). 0% of smartphones have a higher IP rating.
What it is: A standardized code (Ingress Protection) indicating the device's resistance to dust and water intrusion.
When it matters: When you want to know if your phone can survive a splash, a dunk, or a dusty environment.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) has a lower IP rating than the average smartphone (IP53 vs IP67). 0% of smartphones have a higher IP rating.IP53 vs IP67
No camera/mic privacy toggles
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) lacks camera and microphone privacy toggles, the average smartphone includes them. 87% of smartphones offer these toggles.
What it is: A privacy control that restricts or notifies users about apps accessing the camera or microphone.
When it matters: When you want assurance that no app is secretly recording you.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) lacks camera and microphone privacy toggles, the average smartphone includes them. 87% of smartphones offer these toggles.
Older Android version
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) runs an older Android version than the average smartphone (Android 11 vs Android 14). The average smartphone runs Android version Android 14.
What it is: The specific generation number of the Android operating system installed on the device.
When it matters: When you want to ensure app compatibility and access to the latest software features.
Importance: LOW
Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) runs an older Android version than the average smartphone (Android 11 vs Android 14). The average smartphone runs Android version Android 14.Android 11 vs Android 14

Performance & Hardware

Graphic comparison of Xiaomi Redmi K40 Gaming Edition (12GB + 256GB) and other smartphones

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Third-party reviews

What customers like about Xiaomi Redmi K40 Gaming Edition (12GB + 256GB)?

Exceptional gaming performance and overall speed with the MediaTek Dimensity 1200 CPU.
Effective cooling system prevents significant thermal throttling during extended gaming sessions.
Large 5,065mAh battery provides good life, with some users reporting 7-11 hours of mixed usage.
Very fast 67W wired charging (full charge in around 38-42 minutes).
High-quality 120Hz AMOLED display with great color distribution and narrow bezels for an immersive experience.
Tactile, retractable mechanical shoulder buttons enhance the gaming experience.
Excellent sound quality with JBL certification and Dolby Atmos support.
Premium build quality with an aluminum alloy frame and glass back.
Good value for money, offering near-flagship specs at a mid-range price point.
Aesthetically pleasing design, often highlighted for its unique gaming style and RGB lights.

What customers dislike about Xiaomi Redmi K40 Gaming Edition (12GB + 256GB)?

Camera quality is a major weak point, with users describing photos and especially video recording as poor, particularly the selfie camera.
The phone can feel heavy and thick, making one-handed usage difficult.
Software optimization (MIUI) can be inconsistent and buggy, with performance issues and battery drain reported on certain Android versions (e.g., some Android 13 versions).
Lack of a 3.5mm headphone jack, which is a notable omission for a gaming-focused device.
No dedicated microSD card slot for storage expansion.
The front camera punch-hole design is considered a drawback for an immersive gaming screen by some users.
Some users report network connectivity issues with specific carriers in certain regions.
Inferior screen brightness compared to the non-gaming K40 variant.

Expert reviews

muycomputer.com

28/04/2021

Summary of the review

Xiaomi Redmi K40 Gaming Edition features triggers, up to 12 GB of RAM, and a 120 Hz OLED panel

The Xiaomi Redmi K40 Gaming Edition balances high-performance gaming with daily usability, featuring a 6.67-inch 120Hz OLED display, the MediaTek Dimensity 1200 chipset, and, most notably, physical pop-up shoulder triggers. Key pros include a refined, slim design, JBL-tuned stereo speakers, and 67W fast charging that powers the 5,065 mAh battery in 43 minutes. However, cons for international users include the lack of pre-installed Google Mobile Services (GMS), average camera performance, and the absence of a 3.5mm headphone jack. Overall, the device is considered an aggressively priced, powerful gaming option, though its software limitations and, in some cases, lower peak screen brightness may be limiting factors for some users.

Video reviews

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