In depth comparison and review of Xiaomi MI 8 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 8 | Motorola Moto G31 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 154.9 mm | 161.89 mm | Motorola Moto G31 has greater height than Xiaomi MI 8. |
| Width | 74.8 mm | 73.87 mm | Xiaomi MI 8 has greater width than Motorola Moto G31. |
| Depth | 7.6 mm | 8.55 mm | Xiaomi MI 8 is narrower than Xiaomi MI 8. |
| Weight | 175 g | 181 g | Xiaomi MI 8 is lighter than Xiaomi MI 8. |
| Body Colour | Black | Blue | Mineral grey | Baby blue | |
| Body Material | Glass, 7000 Series aluminium | Plastic | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.662 W/kg (body), 0.701 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 8 | Motorola Moto G31 |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | AMOLED | OLED | |
| Screen Size (Display Size) | 6.21" | 6.4" | Motorola Moto G31 has larger screen size than Xiaomi MI 8. |
| Screen Resolution (Display Resolution) | 2248 x 1080 pixels | 2400 x 1080 pixels | Motorola Moto G31 has better screen resolution than Xiaomi MI 8. |
| Display Format | Full HD+ | Full HD+ | |
| Pixel Density | 402 ppi | 409 ppi | Motorola Moto G31 has better pixel density than Xiaomi MI 8. |
| Aspect Ratio | 18.7:9 | 20:9 | |
| Max Brightness | 600 cd/m² | - | |
| Contrast Ratio | 60000:1 | - | |
| Display Enhancement Technology | Sunlight mode | - | |
| Display Refresh Rate | - | 60 Hz | |
| Display Features | Always-on display, Reading mode, Colour temperature adjustment, DCI-P3 Wide colour gamut | Max Vision display |
| PROCESSOR | Xiaomi MI 8 | Motorola Moto G31 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 845 | MediaTek Helio G85 | |
|---|---|---|---|
| Clock Speed | 2.8 GHz | 2 GHz | Xiaomi MI 8 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 8 has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 630 | ARM Mali-G52 MC2 |
| MEMORY | Xiaomi MI 8 | Motorola Moto G31 |
|---|
| RAM | LPDDR4X SDRAM - 6 GB | 4 GB | Xiaomi MI 8 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 8 | Motorola Moto G31 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 4 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 50 Megapixel | Motorola Moto G31 has better camera resolution than Xiaomi MI 8. |
| Sensor Name | Sony Exmor RS IMX363 sensor | - | |
| Lens Type | Wide-angle lens | - | |
| Lens Aperture | F/1.8 | F/1.8 | Both phones have the same camera lens aperture. |
| Pixel Size | - | 1.28 μm | |
| Optical Image Stabiliser (OIS) | 4-axis OIS (Optical Image Stabilisation) | - | Xiaomi MI 8 has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Self-Timer Delay | - | Yes | |
| Special Effects | HDR | HDR, Spot Colour | |
| Camera Modes | Burst mode, Panorama, portrait mode, AR Emoji, AI Beautify | 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 | LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | Dual Pixel Autofocus technology, AI Dual camera, AI scene detection, AI Beautify, AI dynamic bokeh, AI studio lighting, AI short video editing, AI high-res photos | 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 8 has better second camera resolution than Motorola Moto G31. |
|---|---|---|---|
| Lens Type (2nd Camera) | Telephoto lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.4 | F/2.2 | Motorola Moto G31 has better second camera lens aperture than Xiaomi MI 8. |
| Field of View (2nd Camera) | - | 118 degree(s) | |
| Pixel Size (2nd Camera) | - | 1.12 μm | |
| Camera Functions (2nd Camera) | - | Depth camera | |
| Camera Features (2nd Camera) | Portrait lens | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Pixel Size (3rd Camera) | - | 1.75 μm | |
| 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 | 2 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 20 Megapixel | 13 Megapixel | Xiaomi MI 8 has better front camera resolution than Motorola Moto G31. |
| Lens Aperture (Front) | - | F/2.2 | |
| Pixel Size (Front) | - | 1.12 μm | |
| Special Effects (Front) | Mirror | HDR, Spot Colour | |
| Camera Modes (Front) | AR Emoji, AI portrait mode | 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 | |
| Camera Features (Front) | Self-timer, AI detection of 10 different scenes, 3D Beautify | Video image stabilisation, RAW photo, Shot optimisation, Selfie animation, Assistive grid |
| SECOND FRONT CAMERA |
|---|
| Camera Features (2nd Front) | Flood Illuminator, Dot Projector | - |
|---|
| BATTERY AND CHARGING | Xiaomi MI 8 | Motorola Moto G31 |
|---|
| Battery Capacity (Battery Size) | 3400 mAh | 5000 mAh | Motorola Moto G31 has larger battery capacity than Xiaomi MI 8. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 4.0+ | - | Xiaomi MI 8 has fast charging technology. |
| Run Time Details | - | Standard usage: up to 36 hrs |
| CELLULAR | Xiaomi MI 8 | 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 8.1 Oreo | Android 11 | |
| User Interface | MIUI 9.5 | - | |
| Intelligent Assistant | - | Google Assistant | |
| Payment Technology | Android Pay | - | |
| Navigation | GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, A-GPS, GLONASS, Galileo |
| COMMUNICATIONS | Xiaomi MI 8 | Motorola Moto G31 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 CDMA2000 1X | - | |
| 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 17, Band 20, Band 34, Band 38, Band 39, Band 40, Band 41 | - | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700b, FDD 800 DD, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | - | |
| 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. |
| Messaging Services | SMS, MMS | - |
| MEDIA | Xiaomi MI 8 | Motorola Moto G31 |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), apt-X, AMR-WB, AMR-NB, apt-X HD | Dolby Atmos | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP | - |
| FEATURES | Xiaomi MI 8 | Motorola Moto G31 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, barometer, gyro sensor, hall sensor, Time of Flight (ToF), infrared (IR) sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, SAR sensor, gyroscope | |
| Security Devices | Face recognition, fingerprint reader | Face recognition, fingerprint reader | |
| Security Technology | IR face unlock | Face Unlock | |
| Additional Phone Features | Face Unlock, MU-MIMO technology | Dual microphones |
| OTHERS | Xiaomi MI 8 | Motorola Moto G31 |
|---|
| Included Accessories | Power adapter, SIM card removal tool, USB-C to 3.5 jack adapter, USB-C cable, Mi 8 Protective cover | Protective cover, USB cable, SIM card removal tool, 10W charger |
|---|
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