Comparison between:
- Xiaomi Mi 9
- Xiaomi Mi 9 SE
- Xiaomi Redmi 9 Activ
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Xiaomi Mi 9 | Xiaomi Mi 9 SE | Xiaomi Redmi 9 Activ | |
 |  |  | |
| Model alias | Mi9 M1902F1G | Mi9SE | - |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 74.67 mm 7.467 cm 0.245 ft 2.94 in | 70.5 mm 7.05 cm 0.231 ft 2.776 in | 77.07 mm 7.707 cm 0.253 ft 3.034 in |
| Height | 157.5 mm 15.75 cm 0.517 ft 6.201 in | 147.5 mm 14.75 cm 0.484 ft 5.807 in | 164.9 mm 16.49 cm 0.541 ft 6.492 in |
| Thickness | 7.61 mm 0.761 cm 0.025 ft 0.3 in | 7.45 mm 0.745 cm 0.024 ft 0.293 in | 9 mm 0.9 cm 0.03 ft 0.354 in |
| Weight | 173 g 0.38 lbs 6.1 oz | 155 g 0.34 lbs 5.47 oz | 194 g 0.43 lbs 6.84 oz |
| Volume | 89.5 cm³ 5.44 in³ | 77.47 cm³ 4.7 in³ | 114.38 cm³ 6.95 in³ |
| Colors | Black Blue Violet | Blue Black Violet | Carbon Black Coral Green Metallic Purple |
| Body materials | Aluminium alloy Glass | Aluminium alloy Glass | Plastic |
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 | Nano-SIM | Nano-SIM |
| 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 GSМ 900 МНz GSМ 1900 МНz | GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz | GSМ 850 МНz (В5) GSМ 900 МНz (В8) GSМ 1900 МНz (В2) |
| CDMA | CDMA 800 MHz | CDMA 800 MHz | - |
| W-CDMA | W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1700 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz | W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz | W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 2100 MHz (B1) |
| TD-SCDMA | TD-SCDMA 1900 MHz TD-SCDMA 2000 MHz | TD-SCDMA 1900 MHz TD-SCDMA 2000 MHz | - |
| LTE | LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2500 МНz (В41) LТЕ-ТDD 2600 МНz (В38) LТЕ 700 МНz Сlаss 17 LТЕ 800 МНz LТЕ 850 МНz LТЕ 900 МНz LТЕ 1700/2100 МНz LТЕ 1800 МНz LТЕ 1900 МНz LТЕ 2100 МНz LТЕ 2600 МНz LТЕ 700 МНz (В28) | LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2500 МНz (В41) LТЕ-ТDD 2600 МНz (В38) LТЕ 850 МНz LТЕ 900 МНz LТЕ 1800 МНz LТЕ 2100 МНz LТЕ 700 МНz (В12) | LТЕ-FDD 850 МНz (В5) LТЕ-FDD 900 МНz (В8) LТЕ-FDD 1800 МНz (В3) LТЕ-FDD 2100 МНz (В1) LТЕ-ТDD 2500 МНz (В41) |
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 | UМТS GРRS LТЕ Саt 18 | UМТS GРRS LТЕ Саt 15 | UМТS GРRS LТЕ Саt 4 |
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 V10.2 (Аndrоid 9.0 Рiе) | МΙUΙ V10.2 (Аndrоid 9.0 Рiе) | МΙUΙ 12 (Аndrоid 10) |
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 855 (SМ8150) | Quаlсоmm Snарdrаgоn 712 (SDМ712) | МеdiаТеk Неliо G35 (МТ6765G) |
| Process technology | 7 nm | 10 nm | 12 nm |
| CPU | 1х 2.84 GНz АRМ Соrtех-А77, 3х 2.42 GНz АRМ Соrtех-А77, 4х 1.8 GНz АRМ Соrtех-А55 (Κryо 485) | 2х 2.3 GНz АRМ Соrtех-А75, 6х 1.7 GНz АRМ Соrtех-А55 (Κryо 360) | 4х 2.3 GНz АRМ Соrtех-А53, 4х 1.8 GНz АRМ Соrtех-А53 |
| CPU bits | 64 bit | 64 bit | 64 bit |
| Instruction set | ARMv8.2-A | ARMv8.2-A | ARMv8-A |
| Level 1 cache memory (L1) | 16 KB + 16 KB | 16 KB + 16 KB | 16 KB + 16 KB |
| Level 2 cache memory (L2) | 1792 KB 1.75 MB | - | - |
| Level 3 cache memory (L3) | 2048 KB 2 MB | - | - |
| CPU cores | 8 | 8 | 8 |
| CPU frequency | 2840 MHz | 2300 MHz | 2300 MHz |
| GPU | Qualcomm Adreno 640 | Qualcomm Adreno 616 | IMG PowerVR GE8320 |
| GPU frequency | 585 MHz | 610 MHz | 680 MHz |
| RAM capacity | 6 GB 8 GB | 6 GB | 4 GB 6 GB |
| RAM type | LPDDR4X | LPDDR4X | LPDDR4X |
| RAM channels | Quad channel | Double channel | Double channel |
| RAM frequency | 2033 MHz | 1999 MHz | 1733 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 64 GB 128 GB | 64 GB 128 GB | 64 GB 128 GB |
| UFS 2.1 | eMMC 5.1 | UFS 2.0 |
Memory cards
Memory cards are used in mobile devices for expanding their external storage capacity.
| Types | - | - | miniSD microSDHC microSDXC |
Display
The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.
| Type/technology | Super AMOLED | Super AMOLED | IPS |
| Diagonal size | 6.39 in 162.31 mm 16.23 cm | 5.97 in 151.64 mm 15.16 cm | 6.53 in 165.86 mm 16.59 cm |
| Width | 2.86 in 72.59 mm 7.26 cm | 2.56 in 64.91 mm 6.49 cm | 2.74 in 69.51 mm 6.95 cm |
| Height | 5.72 in 145.17 mm 14.52 cm | 5.4 in 137.04 mm 13.7 cm | 5.93 in 150.6 mm 15.06 cm |
| Aspect ratio | 2:1 2:1 (18:9) | 2.111:1 | 2.167:1 |
| Resolution | 720 x 1440 pixels | 720 x 1520 pixels | 1080 x 2340 pixels |
| Pixel density | 252 ppi 99 ppcm | 282 ppi 110 ppcm | 395 ppi 155 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 89.89 % | 85.82 % | 82.63 % |
| Other features | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch Scratch resistant |
| Display manufacturer - Samsung Corning Gorilla Glass 6 2.5D curved glass screen Always-On Display 60000:1 contrast ratio 430 cd/m² Peak brightness - 600 cd/m² 103.8% NTSC DC dimming HDR10 | Display manufacturer - Samsung Corning Gorilla Glass 5 2.5D curved glass screen Always-On Display 60000:1 contrast ratio 430 cd/m² Peak brightness - 600 cd/m² HDR10 | 2.5D curved glass screen 400 cd/m² 1500:1 70% NTSC |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer Compass Gyroscope Barometer Fingerprint | Proximity Light Accelerometer Compass Gyroscope Barometer Fingerprint | Proximity Light Accelerometer |
| In-display fingerprint sensor Step detector Step counter | In-display fingerprint sensor Step detector Step counter | Vibration 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 IMX586 Exmor RS | Sony IMX586 Exmor RS | - |
| Sensor type | CMOS BSI | CMOS BSI | CMOS |
| Sensor format | 1/2" | 1/2" | - |
| Pixel size | 0.8 µm 0.000800 mm | 0.8 µm 0.000800 mm | 1 µm 0.001000 mm |
| ISO | 100 - 3200 | 100 - 3200 | - |
| Aperture | f/1.75 | f/1.75 | f/2.2 |
| Focal length and 35 mm equivalent | 4.75 mm 27 mm *(35 mm / full frame) | 4.77 mm 26 mm *(35 mm / full frame) | - |
| Number of lenses | 6 | 6 | - |
| Flash type | Dual LED | Dual LED | LED |
| Image resolution | 8000 x 6000 pixels 48 MP | 8000 x 6000 pixels 48 MP | 4160 x 3120 pixels 12.98 MP |
| Video resolution | 3840 x 2160 pixels 8.29 MP | 3840 x 2160 pixels 8.29 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 60 fps | 30 fps | 30 fps |
| Features | Autofocus Continuous shooting Digital zoom Optical zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Macro mode RAW Phase detection autofocus (PDAF) Laser autofocus (LAF) Contrast detection autofocus (CDAF) | Autofocus Continuous shooting Digital zoom Optical zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Macro mode Phase detection autofocus (PDAF) RAW | Autofocus Digital zoom Digital 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) Sapphire crystal glass lens cover 1080p @ 960 fps 720p @ 960 fps | Pixel size - 1.6 μm (4-in-1 pixel binning) Sapphire crystal glass lens cover 1080p @ 120 fps 720p @ 960 fps | - |
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.
| Sensor model | Sony IMX481 Exmor RS | - | - |
| Sensor format | 1/3" | - | - |
| Pixel size | 1 µm 0.001000 mm | 1.12 µm 0.001120 mm | - |
| Aperture | f/2.2 | f/2.4 | - |
| Focal length equivalent (35 mm) | 17 mm *(35 mm / full frame) | 15 mm *(35 mm / full frame) | - |
| Field of view | 117 ° | 123 ° | - |
| Number of lenses | 6 | - | - |
| Image resolution | 16 MP | 13 MP | - |
Telephoto camera
Specifications of the telephoto camera. These cameras are used to capture distant objects by using optical zoom to make them look closer without losing resolution and detail.
| Sensor model | Samsung S5K3M5 | - | - |
| Sensor format | 1/3.4" | - | - |
| Pixel size | 1 µm 0.001000 mm | 1.12 µm 0.001120 mm | - |
| Aperture | f/2.2 | f/2.4 | - |
| Focal length equivalent (35 mm) | 51 mm *(35 mm / full frame) | 52 mm *(35 mm / full frame) | - |
| Number of lenses | 6 | - | - |
| Optical zoom | - | 2 x | - |
| Image resolution | 12 MP | 8 MP | - |
| Sensor type - ISOCELL | - | - |
Depth-sensing camera
Specifications of the depth sensor of the device. Depth sensors measure the distance between the subject and the camera, enabling features such as bokeh in portraits.
| Aperture | - | - | f/2.4 |
| Image resolution | - | - | 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.
| Pixel size | 0.9 µm 0.000900 mm | 0.9 µm 0.000900 mm | 1.12 µm 0.001120 mm |
| Aperture | f/2 | f/2 | f/2.2 |
| Focal length and 35 mm equivalent | 3.52 mm 18 mm *(35 mm / full frame) | 3.45 mm 26 mm *(35 mm / full frame) | - |
| Image resolution | 5440 x 3697 pixels 20.11 MP | 5568 x 3612 pixels 20.11 MP | 2560 x 1944 pixels 4.98 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 detection |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece |
| Headphone adapter | Headphone adapter | 1712 speaker |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | No | No | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GРS А-GРS | GРS А-GРS GLОΝАSS | GРS А-GРS GLОΝАSS |
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 802.11а | 802.11а 802.11b 802.11g Wi-Fi Disрlаy 802.11а 802.11ас 5GНz | 802.11b 802.11g 802.11а 802.11ас 5GНz 802.11аd |
| 2x2 MiMO | MU-MiMO | - |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 5.0 | 5.0 | 5.0 |
| Features | A2DP LE | A2DP LE | A2DP EDR HID LE |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
| Connector type | Micro USB | USB Type-C | USB Type-C |
| Version | 2.0 | 2.0 | 2.0 |
| Features | Charging Host Mass storage On-The-Go | Charging Host Mass storage On-The-Go | Charging 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 | Yes |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Infrared Tethering DLNA NFC VoLTE | Computer sync OTA sync Infrared Tethering DLNA NFC VoLTE | Computer sync OTA sync Tethering 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 AAC+ AMR AMR-WB aptX aptX HD eAAC+ FLAC MIDI MP3 OGG WMA WAV LDAC | AAC AAC+ AMR AMR-WB aptX aptX HD eAAC+ FLAC MIDI MP3 OGG WMA WAV LDAC | AAC AAC+ AMR AMR-WB eAAC+ FLAC MIDI MP3 OGG WMA WAV LDAC |
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 | 3GPP AVI DivX H.263 H.264 H.265 MKV MP4 VC-1 Xvid | 3GPP AVI DivX H.263 H.264 H.265 MKV MP4 VC-1 Xvid | 3GPP AVI DivX H.263 H.264 H.265 MKV MP4 VC-1 Xvid |
Battery
The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.
| Capacity | 3300 mAh | 3070 mAh | 5000 mAh |
| Type | Li-Polymer | Li-Polymer | Li-Polymer |
| Charger output power | 5 V / 3 A 9 V / 3 A 12 V / 2.25 A 20 V / 1.35 A | 5 V / 3 A 9 V / 2 A 12 V / 1.5 A | 5 V / 2 A |
| Quick charge technology | Qualcomm Quick Charge 4+ | Qualcomm Quick Charge | - |
| Features | Wireless charging Fast charging Non-removable | Fast charging Non-removable | Fast charging Non-removable |
| Wireless charging - 20 W | - | - |
Specific Absorption Rate (SAR)
The SAR rating shows the amount of electromagnetic radiation absorbed by the human body when using a mobile device, expressed in W/kg.
| Head SAR (EU) | 1.839 W/kg | 1.725 W/kg | - |
| Body SAR (EU) | 1.721 W/kg | 1.695 W/kg | - |
| Head SAR (USA) | 1.36 W/kg | 1.48 W/kg | - |
| Body SAR (USA) | 1.4 W/kg | 1.44 W/kg | - |
| Head SAR (India) | - | - | 0.51 W/kg |
| Body SAR (India) | - | - | 0.83 W/kg |
| Xiaomi Mi 9 | Xiaomi Mi 9 SE | Xiaomi Redmi 9 Activ |
