In depth comparison and review of Xiaomi MI 9 and Motorola Moto G31. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 157.5 mm | 161.89 mm | Motorola Moto G31 has greater height than Xiaomi MI 9. |
| Width | 74.67 mm | 73.87 mm | Xiaomi MI 9 has greater width than Motorola Moto G31. |
| Depth | 7.61 mm | 8.55 mm | Xiaomi MI 9 is narrower than Xiaomi MI 9. |
| Weight | 173 g | 181 g | Xiaomi MI 9 is lighter than Xiaomi MI 9. |
| Body Colour | Ocean blue | Piano black | Mineral grey | Baby blue | |
| Body Material | Curved glass | Plastic | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.301 W/kg (body), 1.389 W/kg (head) | 1.46 W/kg (body), 0.67 W/kg (head) | |
| Connector Type | USB Type-C - 24 pin USB-C | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | AMOLED | OLED | |
| Screen Size (Display Size) | 6.39" | 6.4" | Motorola Moto G31 has larger screen size than Xiaomi MI 9. |
| Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 2400 x 1080 pixels | Motorola Moto G31 has better screen resolution than Xiaomi MI 9. |
| Display Format | Full HD+ | Full HD+ | |
| Pixel Density | 403 ppi | 409 ppi | Motorola Moto G31 has better pixel density than Xiaomi MI 9. |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | 600 cd/m² | - | |
| Contrast Ratio | 60000:1 | - | |
| HDR | Yes | - | Xiaomi MI 9 has HDR. |
| HDR Technology | HDR10 | - | |
| Display Enhancement Technology | Sunshine mode 2.0 | - | |
| Display Refresh Rate | - | 60 Hz | |
| Display Features | Always-on display, Reading mode, Colour temperature adjustment, night mode, Wide Colour Gamut (WCG) | Max Vision display | |
| Display Protection (Screen Protector) | Fingerprint-resistant coating, Corning Gorilla Glass 6 (scratch resistant glass), oil protective coating | - |
| PROCESSOR | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 855 | MediaTek Helio G85 | |
|---|---|---|---|
| Clock Speed | 2.84 GHz | 2 GHz | Xiaomi MI 9 has higher clock speed than Motorola Moto G31. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | Xiaomi MI 9 has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 640 | ARM Mali-G52 MC2 |
| MEMORY | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| RAM | LPDDR4X SDRAM - 6 GB | 4 GB | Xiaomi MI 9 has more RAM than Motorola Moto G31. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 64 GB | Both phones have the same internal memory capacity. |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 4 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 50 Megapixel | Motorola Moto G31 has better camera resolution than Xiaomi MI 9. |
| Sensor Name | Sony Exmor RS IMX586 sensor | - | |
| Lens Type | Ultra wide-angle lens | - | |
| Lens Aperture | F/1.75 | F/1.8 | Xiaomi MI 9 has better lens aperture than Xiaomi MI 9. |
| Pixel Size | 0.8 μm | 1.28 μm | Motorola Moto G31 has larger camera pixel size than Xiaomi MI 9. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Optical Zoom | 2x | - | |
| Digital Zoom | 10x | - | |
| Self-Timer Delay | - | Yes | |
| Special Effects | HDR | HDR, Spot Colour | |
| Camera Modes | Burst mode, Panorama, portrait mode, AI Beautify, Smart ultra-wide angle mode, Ultra nightscape mode, Photo timer, Level display, Custom watermark, Full body portrait mode, Moon mode | Panorama, Pro mode, Timer mode, BurstShot, Watermark mode, Active photos, Cinemagraph, Portrait, Night Vision, AR stickers, Levelling, Macro Vision, Long exposure mode, Live filter, Capture Dual | |
| Face Recognition (Face ID) | Face recognition | Auto smile capture | Both phones have face detection. |
| Light Source | Dual flash | LED flash | |
| Still Image Resolutions | 8000 x 6000 | - | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps, 3840 x 2160 (4K) at 60 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Slo-mo video 1920 x 1080 (1080p) at 960 fps, Slo-mo video 1280 x 720 (720p) at 960 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | Sapphire crystal lens cover, Phase Detect Auto-Focus (PDAF), Dynamic photos, video stabilisation, Contrast Auto-Focus, AI scene detection, AI studio lighting, Video Beautify, AI Triple camera, 960 fps Smart audio pairing, AI lens flare, AI high resolution photos, Portrait mode background blur adjustment, Ultra wide-angle edge distortion correction, Group photo face correction, Portrait mode background blurring, Motion tracking, Quick motion | Phase Detect Auto-Focus (PDAF), Barcode Scanner, Cutout, Quad Pixel technology, smart composition, RAW photo output, shot optimisation, Google Lens, High-res digital zoom (up to 8x), Assistive Grid |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 8 Megapixel | Xiaomi MI 9 has better second camera resolution than Motorola Moto G31. |
|---|---|---|---|
| Lens Type (2nd Camera) | Telephoto lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.2 | Both phones have the same second camera lens aperture. |
| Field of View (2nd Camera) | - | 118 degree(s) | |
| Pixel Size (2nd Camera) | 1 μm | 1.12 μm | Motorola Moto G31 has larger second camera pixel size than Xiaomi MI 9. |
| Camera Functions (2nd Camera) | - | Depth camera | |
| Camera Features (2nd Camera) | Macro photography | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 16 Megapixel | 2 Megapixel | Xiaomi MI 9 has higher resolution third camera than Motorola Moto G31. |
|---|---|---|---|
| Lens Type (3rd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (3rd Camera) | F/2.2 | F/2.4 | Xiaomi MI 9 has better third camera lens aperture than Xiaomi MI 9. |
| Pixel Size (3rd Camera) | 1 μm | 1.75 μm | Motorola Moto G31 has larger third camera pixel size than Xiaomi MI 9. |
| Camera Functions (3rd Camera) | - | Macro camera |
| FOURTH CAMERA |
|---|
| Lens Aperture (4th Camera) | - | F/2.4 | |
|---|---|---|---|
| Pixel Size (4th Camera) | - | 1.75 μm | |
| Camera Functions (4th Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 20 Megapixel | 13 Megapixel | Xiaomi MI 9 has better front camera resolution than Motorola Moto G31. |
| Lens Aperture (Front) | F/2.0 | F/2.2 | Xiaomi MI 9 has better front lens aperture than Xiaomi MI 9. |
| Pixel Size (Front) | 0.9 μm | 1.12 μm | Motorola Moto G31 has larger front camera pixel size than Xiaomi MI 9. |
| Special Effects (Front) | HDR, Magic mirror | HDR, Spot Colour | |
| Camera Modes (Front) | AI portrait mode, AI Beautify, AI makeup | Slow motion video, Pro mode, Timer mode, BurstShot, HYPERLAPSE, Watermark mode, portrait mode, Face Beauty, Timelapse video, Active photos, Cinemagraph, Portrait, Night Vision, Levelling, Gesture selfie, Group selfie, Long exposure mode, Live filter, Low Light AI Selfie, Capture Dual, Gesture Capture | |
| Face Recognition (Face ID) | Face recognition | Auto smile capture | Both phones have face detection. |
| Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Front) | Self-timer, age recognition, Video Beautify, AI scene detection, AI studio lighting, Eye light, AI feature adjustment, AI lens flare | Video image stabilisation, RAW photo, Shot optimisation, Selfie animation, Assistive grid |
| BATTERY AND CHARGING | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| Battery Capacity (Battery Size) | 3300 mAh | 5000 mAh | Motorola Moto G31 has larger battery capacity than Xiaomi MI 9. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 4.0+ | - | Xiaomi MI 9 has fast charging technology. |
| Wireless Charging Standards | WPC, Qi | - | |
| Run Time Details | - | Standard usage: up to 36 hrs |
| CELLULAR | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | - | Android 11 | |
| User Interface | MIUI 10 | - | |
| Intelligent Assistant | Google Assistant | Google Assistant | |
| Payment Technology | Android Pay | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, A-GPS, GLONASS, Galileo |
| COMMUNICATIONS | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | LTE | |
|---|---|---|---|
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | - | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | - | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 20, Band 28, Band 38, Band 39, Band 40 | - | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 1900, TDD 2300 | - | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| WLAN Security | WPA3 | - | |
| Messaging Services | SMS, MMS | - |
| MEDIA | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| Supported Digital Audio Standards | WAV, AAC, AMR, MP3, FLAC, apt-X, LDAC, apt-X HD | Dolby Atmos | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, VP8, VP9 | - | |
| Sound Enhancements | Qualcomm TrueWireless Stereo Plus | - |
| FEATURES | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, digital compass, gyro sensor, ultrasonic proximity sensor, linear rotation vector sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, SAR sensor, gyroscope | |
| Security Devices | Fingerprint reader (under display) | Face recognition, fingerprint reader | |
| Security Technology | - | Face Unlock | |
| Additional Phone Features | Infrared remote control, MIMO technology, MU-MIMO technology, MI Turbo, GAME Turbo | Dual microphones |
| OTHERS | Xiaomi MI 9 | Motorola Moto G31 |
|---|
| Included Accessories | Protective cover, SIM card removal tool, USB-C cable, USB-C audio adapter, 18W QC3.0 charger | Protective cover, USB cable, SIM card removal tool, 10W charger | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland Certified Safe Fast-Charge System | - |
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