Comparison between:
- Xiaomi Redmi K40S
- Xiaomi Redmi K40
- Xiaomi Redmi K40 Gaming Edition
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Xiaomi Redmi K40S | Xiaomi Redmi K40 | Xiaomi Redmi K40 Gaming Edition | |
 |  |  | |
| Model alias | - | M2012K11AC | Redmi K40 Gaming Enhanced Edition M2104K10AC |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 75.95 mm 7.595 cm 0.249 ft 2.99 in | 76.4 mm 7.64 cm 0.251 ft 3.008 in | 76.93 mm 7.693 cm 0.252 ft 3.029 in |
| Height | 163.2 mm 16.32 cm 0.535 ft 6.425 in | 163.7 mm 16.37 cm 0.537 ft 6.445 in | 161.94 mm 16.194 cm 0.531 ft 6.376 in |
| Thickness | 7.7 mm 0.77 cm 0.025 ft 0.303 in | 7.8 mm 0.78 cm 0.026 ft 0.307 in | 8.3 mm 0.83 cm 0.027 ft 0.327 in |
| Weight | 195 g 0.43 lbs 6.88 oz | 196 g 0.43 lbs 6.91 oz | 205 g 0.45 lbs 7.23 oz |
| Volume | 95.44 cm³ 5.8 in³ | 97.55 cm³ 5.92 in³ | 103.4 cm³ 6.28 in³ |
| Colors | Icy White Glossy Black Dreamland | Icy White Glossy Black Dreamland | Silver Wing Light Blade Shadow Bruce Lee Themed Version |
| Body materials | Glass Plastic | Glass Plastic | Glass Metal |
| Certification | - | - | IP53 |
SIM card
The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.
| SIM card type | Nano-SIM / microSD Micro-SIM | Nano-SIM Nano-SIM / microSD | Nano-SIM Nano-SIM / microSD |
| Number of SIM cards | 2 | 2 | 2 |
| Features | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) |
Networks
A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other.
| GSM | GSМ 850 МНz (В5) GSМ 900 МНz (В8) GSМ 1900 МНz (В2) | GSМ 850 МНz (В5) GSМ 900 МНz (В8) GSМ 1900 МНz (В2) | GSМ 850 МНz (В5) GSМ 900 МНz (В8) GSМ 1900 МНz (В2) |
| CDMA | CDMA 800 MHz (BC0) | CDMA 800 MHz (BC0) | CDMA 800 MHz (BC0) |
| W-CDMA | W-CDMA 850 MHz (B5) W-CDMA 850 MHz (B6) W-CDMA 900 MHz (B8) W-CDMA 900 MHz (B19) W-CDMA 1700 MHz (B4) W-CDMA 1900 MHz (B2) W-CDMA 2100 MHz (B1) | W-CDMA 850 MHz (B5) W-CDMA 850 MHz (B6) W-CDMA 900 MHz (B8) W-CDMA 900 MHz (B19) W-CDMA 1700 MHz (B4) W-CDMA 1900 MHz (B2) W-CDMA 2100 MHz (B1) | W-CDMA 850 MHz (B5) W-CDMA 850 MHz (B6) W-CDMA 900 MHz (B8) W-CDMA 900 MHz (B19) W-CDMA 1700 MHz (B4) W-CDMA 1900 MHz (B2) W-CDMA 2100 MHz (B1) |
| TD-SCDMA | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz |
| LTE | LТЕ-FDD 700 МНz (В28) LТЕ-FDD 850 МНz (В5) LТЕ-FDD 850 МНz (В18) LТЕ-FDD 850 МНz (В19) LТЕ-FDD 850 МНz (В26) LТЕ-FDD 900 МНz (В8) LТЕ-FDD 1700 МНz (В4) LТЕ-FDD 1800 МНz (В3) LТЕ-FDD 1900 МНz (В2) LТЕ-FDD 2100 МНz (В1) LТЕ-FDD 2600 МНz (В7) LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2000 МНz (В34) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2600 МНz (В38) | LТЕ-FDD 700 МНz (В28) LТЕ-FDD 850 МНz (В5) LТЕ-FDD 850 МНz (В18) LТЕ-FDD 850 МНz (В19) LТЕ-FDD 850 МНz (В26) LТЕ-FDD 900 МНz (В8) LТЕ-FDD 1700 МНz (В4) LТЕ-FDD 1800 МНz (В3) LТЕ-FDD 1900 МНz (В2) LТЕ-FDD 2100 МНz (В1) LТЕ-FDD 2600 МНz (В7) LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2000 МНz (В34) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2600 МНz (В38) | LТЕ-FDD 700 МНz (В28) LТЕ-FDD 850 МНz (В5) LТЕ-FDD 850 МНz (В18) LТЕ-FDD 850 МНz (В19) LТЕ-FDD 850 МНz (В26) LТЕ-FDD 900 МНz (В8) LТЕ-FDD 1700 МНz (В4) LТЕ-FDD 1800 МНz (В3) LТЕ-FDD 1900 МНz (В2) LТЕ-FDD 2100 МНz (В1) LТЕ-FDD 2600 МНz (В7) LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2000 МНz (В34) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2600 МНz (В38) |
| 5G NR | 5G-FDD 1800 MHz (n3) 5G-FDD 2100 MHz (n1) 5G-TDD 2500 MHz (n41) 5G-TDD 3500 MHz (n78) 5G-TDD 3700 MHz (n77) | 5G-FDD 1800 MHz (n3) 5G-FDD 2100 MHz (n1) 5G-TDD 2500 MHz (n41) 5G-TDD 3500 MHz (n78) 5G-TDD 3700 MHz (n77) | 5G-FDD 700 MHz (n28) 5G-FDD 1800 MHz (n3) 5G-FDD 2100 MHz (n1) 5G-TDD 2500 MHz (n41) 5G-TDD 3500 MHz (n78) 5G-TDD 3700 MHz (n77) |
Mobile network technologies and bandwidth
Communication between devices within mobile networks is realized via various generations of network technologies, which provide different bandwidth.
| Mobile network technologies | ЕDGЕ НSРА+ ТD-SСDМА | ЕDGЕ НSРА+ ТD-SСDМА | ЕDGЕ НSРА+ ТD-SСDМА |
Operating system
Operating system is the system software, which manages and controls the functioning of the hardware components of the device.
| Operating system (OS) | МΙUΙ 13 (Аndrоid 11) | МΙUΙ 12.2 (Аndrоid 11) | МΙUΙ 12.5 (Аndrоid 11) |
System on Chip (SoC)
A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device.
| SoC | Quаlсоmm Snарdrаgоn 870 (SМ8250-АС) | Quаlсоmm Snарdrаgоn 870 (SМ8250-АС) | МеdiаТеk Dimеnsity 1200 (МТ6893) |
| Process technology | 7 nm | 7 nm | 6 nm |
| CPU | 1х 3.2 GНz АRМ Соrtех-А77, 3х 2.42 GНz АRМ Соrtех-А77, 4х 1.8 GНz АRМ Соrtех-А55 (Κryо 585) | 1х 3.2 GНz АRМ Соrtех-А77, 3х 2.42 GНz АRМ Соrtех-А77, 4х 1.8 GНz АRМ Соrtех-А55 (Κryо 585) | 1х 3.0 GНz АRМ Соrtех-А78, 3х 2.6 GНz АRМ Соrtех-А78, 4х 2.0 GНz АRМ Соrtех-А55 |
| CPU bits | 64 bit | 64 bit | 64 bit |
| Instruction set | ARMv8.2-A | ARMv8.2-A | ARMv8.2-A |
| Level 1 cache memory (L1) | 16 KB + 16 KB | 16 KB + 16 KB | 16 KB + 16 KB |
| Level 2 cache memory (L2) | 1024 KB 1 MB | 1024 KB 1 MB | - |
| Level 3 cache memory (L3) | 4096 KB 4 MB | 4096 KB 4 MB | - |
| CPU cores | 8 | 8 | 8 |
| CPU frequency | 3200 MHz | 3200 MHz | 3000 MHz |
| GPU | Qualcomm Adreno 650 | Qualcomm Adreno 650 | ARM Mali-G77 MC9 |
| GPU cores | - | - | 9 |
| GPU frequency | 670 MHz | 670 MHz | 886 MHz |
| RAM capacity | 6 GB 8 GB 12 GB | 6 GB 8 GB | 6 GB 8 GB 12 GB |
| RAM type | LPDDR5 | LPDDR5 | LPDDR4X |
| RAM channels | Quad channel | Quad channel | Quad channel |
| RAM frequency | 2883 MHz | 2650 MHz | 2033 MHz |
| 3112 mm² VC cooling system | - | APU 3.0 Three-layered cooling system with VC Game Turbo 5.0 |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 128 GB 256 GB | 128 GB 256 GB | 128 GB 256 GB |
| eMMC 5.1 | UFS 3.1 | UFS 2.0 |
Display
The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.
| Type/technology | E4 AMOLED | E4 AMOLED | AMOLED |
| Diagonal size | 6.67 in 169.42 mm 16.94 cm | 6.67 in 169.42 mm 16.94 cm | 6.67 in 169.42 mm 16.94 cm |
| Width | 2.89 in 73.42 mm 7.34 cm | 2.86 in 72.53 mm 7.25 cm | 3.27 in 83.06 mm 8.31 cm |
| Height | 6.01 in 152.68 mm 15.27 cm | 6.03 in 153.11 mm 15.31 cm | 5.81 in 147.66 mm 14.77 cm |
| Aspect ratio | 2.08:1 | 2.111:1 | 1.778:1 16:9 |
| Resolution | 1080 x 2246 pixels | 720 x 1520 pixels | 1080 x 1920 pixels |
| Pixel density | 374 ppi 147 ppcm | 252 ppi 99 ppcm | 330 ppi 129 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 30 bit 1073741824 colors |
| Display area | 90.73 % | 89.07 % | 98.76 % |
| Other features | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch Scratch resistant |
| 3D curved glass screen Corning Gorilla Glass 5 120 Hz refresh rate 360 Hz touch sampling rate HDR10+ 900 cd/m² HBM 1300 cd/m² peak brightness 5000000:1 MEMC Sunscreen 3.0 Night Light Screen Display manufacturer - Samsung | 3D curved glass screen Corning Gorilla Glass 5 120 Hz refresh rate 360 Hz touch sampling rate HDR10+ 1300 cd/m² peak brightness 5000000:1 MEMC Sunscreen 3.0 Night Light Screen Display manufacturer - Samsung | 2.5D curved glass screen Corning Gorilla Glass 5 120 Hz refresh rate 480 Hz touch sampling rate HDR10+ 500 cd/m² 5000000:1 |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Light Accelerometer Compass Gyroscope Pedometer Geomagnetic Fingerprint Gravity Color temperature sensor | Light Accelerometer Compass Gyroscope Pedometer Geomagnetic Fingerprint Gravity Color temperature sensor | Accelerometer Compass Gyroscope Pedometer Fingerprint 360° Light sensor |
| Side-mounted fingerprint sensor X-axis linear motor | Side-mounted fingerprint sensor X-axis linear motor | Side-mounted fingerprint sensor X-axis linear motor |
Main rear camera
The main camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras.
| Sensor model | Sony IMX582 Exmor RS | Sony IMX582 Exmor RS | - |
| Sensor type | CMOS BSI | CMOS BSI | CMOS BSI |
| Sensor format | 1/2" | 1/2" | 1/2" |
| Pixel size | 0.8 µm 0.000800 mm | 0.8 µm 0.000800 mm | 0.7 µm 0.000700 mm |
| Aperture | f/1.79 | f/1.79 | f/1.65 |
| Number of lenses | - | - | 6 |
| Flash type | Dual LED | Dual LED | Dual LED |
| Image resolution | 8000 x 6000 pixels 48 MP | 8000 x 6000 pixels 48 MP | 9280 x 6920 pixels 64.22 MP |
| Video resolution | 3840 x 2160 pixels 8.29 MP | 3840 x 2160 pixels 8.29 MP | 7680 x 3160 pixels 24.27 MP |
| Video FPS | 30 fps | 30 fps | 30 fps |
| Features | Autofocus Continuous shooting Digital zoom Optical zoom Digital image stabilization Optical image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF) | Autofocus Continuous shooting Digital zoom Digital image stabilization Optical image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF) | Autofocus Continuous shooting Digital zoom Digital image stabilization Optical image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF) |
| Pixel size - 1.6 μm (4-in-1 pixel binning) 1080p @ 960 fps | Pixel size - 1.6 μm (4-in-1 pixel binning) 1080p @ 960 fps | Pixel size - 2.1 μm (9-in-1 pixel binning) 1G + 5P glass-plastic hybrid lens |
Ultra-wide camera
Specifications of the ultra-wide camera of the device. This type of camera captures a wider field of view compared to the main camera.
| Aperture | f/2.4 | f/2.4 | f/2.2 |
| Image resolution | 8 MP | 8 MP | 8 MP |
| Amgle of view - 119° | Amgle of view - 119° | Amgle of view - 120° |
Macro camera
Specifications of the macro camera of the device. This type of camera in smartphones is used to snap close-up photos of tiny objects.
| Aperture | f/2.4 | f/2.4 | f/2.4 |
| Image resolution | 2 MP | 5 MP | 2 MP |
Front camera
Modern smartphones have one or more front cameras and their positioning has led to various design concepts – pop-up camera, rotating camera, notch, punch hole, under-display camera, etc.
| Sensor type | - | - | CMOS BSI |
| Image resolution | 20 MP | 20 MP | 4864 x 3274 pixels 15.92 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | 30 fps | 30 fps |
| Features | Face unlock HDR | Face unlock HDR | Face unlock HDR |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece Stereo speakers | Loudspeaker Earpiece Stereo speakers | Loudspeaker Earpiece Stereo speakers |
| Dolby Atnation Hi-Res Audio Hi-Res Audio Wireless | Dolby Atnation Hi-Res Audio Hi-Res Audio Wireless | JBL tuned Dolby Atmos Hi-Res Audio Hi-Res Audio Wireless |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | Yes | Yes | No |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GРS А-GРS GLОΝАSS | GРS А-GРS | GРS А-GРS |
Wi-Fi
Wi-Fi is a technology that provides wireless data connections between various devices within a short range.
| Wi-Fi | 802.11а 802.11b 802.11g Wi-Fi Disрlаy Wi-Fi 6 (802.11ах) 802.11а 802.11ас 5GНz | 802.11а 802.11b 802.11g Wi-Fi Disрlаy Wi-Fi 6 (802.11ах) 802.11а | 802.11а 802.11b 802.11g Wi-Fi 6 (802.11ах) Wi-Fi Disрlаy 802.11а 802.11аd |
| - | - | 2x2 MIMO |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 5.2 | 5.1 | 5.2 |
| Features | A2DP LE | A2DP LE | A2DP LE |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
| Connector type | USB Type-C | Micro USB | Micro USB |
| Version | 2.0 | 2.0 | 2.0 |
| Features | Charging Host Mass storage On-The-Go | Charging Host Mass storage On-The-Go | Charging Host Mass storage On-The-Go |
Headphone jack
The headphone jack is an audio phone connector, a.k.a. an audio jack. The most widely used one in mobile devices is the 3.5 mm headphone jack.
| Headphone jack | No | No | No |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync Infrared Tethering NFC VoLTE | Computer sync Infrared Tethering NFC VoLTE | Computer sync Infrared Tethering NFC VoLTE |
Browser
A web browser is a software application for accessing, fetching, displaying and navigating through information on the World Wide Web.
| Browser | HTML HTML5 CSS 3 | HTML HTML5 CSS 3 | HTML HTML5 CSS 3 |
Audio file formats/codecs
Mobile devices support various audio file formats and codecs, which respectively store and code/decode digital audio data.
| Audio file formats/codecs | AAC AMR-WB FLAC MP3 OGG WMA WAV APE AMR-NB LDAC LHDC | AAC AMR-WB FLAC MP3 OGG WMA WAV APE AMR-NB LDAC LHDC | AAC AMR-WB FLAC MP3 OGG WMA WAV APE AMR-NB LDAC LHDC |
Video file formats/codecs
Mobile devices support various video file formats and codecs, which respectively store and code/decode digital video data.
| Video file formats/codecs | AVI MKV MP4 WMV WEBM 3GP ASF | AVI MKV MP4 WMV WEBM 3GP ASF | AVI MKV MP4 WMV WEBM 3GP ASF |
Battery
The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.
| Capacity | 4500 mAh | 4520 mAh | 5065 mAh |
| Type | Li-Polymer | Li-Polymer | Li-Polymer |
| Charger output power | 10 V / 6.7 A | 5 V / 6.6 A | 10 V / 6.7 A |
| Quick charge technology | - | - | Qualcomm Quick Charge 3+, USB Power Delivery 3.0 |
| Features | Fast charging Non-removable | Fast charging Non-removable | Fast charging Non-removable |
Additional features
Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.
| Additional features | - | - | Pop-up shoulder buttons |
| Xiaomi Redmi K40S | Xiaomi Redmi K40 | Xiaomi Redmi K40 Gaming Edition |
