In depth comparison and review of Xiaomi MI Mix 3 5G and Xiaomi Redmi Note 9. 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 Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch slider | Touch | |
| Height | 157.89 mm | 162.3 mm | Xiaomi Redmi Note 9 has greater height than Xiaomi MI Mix 3 5G. |
| Width | 74.69 mm | 77.2 mm | Xiaomi Redmi Note 9 has greater width than Xiaomi MI Mix 3 5G. |
| Depth | 8.46 mm | 8.9 mm | Xiaomi MI Mix 3 5G is narrower than Xiaomi MI Mix 3 5G. |
| Weight | 225 g | 199 g | Xiaomi Redmi Note 9 is lighter than Xiaomi MI Mix 3 5G. |
| Body Colour | Sapphire blue | Onyx black | Forest green | |
| Protection | - | Splashproof | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.577 W/kg (body), 1.557 W/kg (head) | 2.262 W/kg (limb), 1.138 W/kg (body), 0.795 W/kg (head) | |
| Integrated Components | - | Ultra-linear speaker | |
| 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 | |
| SIM Card Qty | Single-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| Display Type | OLED display | - | |
|---|---|---|---|
| Display Technology | AMOLED | - | |
| Screen Size (Display Size) | 6.39" | 6.53" | Xiaomi Redmi Note 9 has larger screen size than Xiaomi MI Mix 3 5G. |
| Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 2340 x 1080 pixels | Both phones have the same screen resolution. |
| Display Format | Full HD+ | Full HD+ | |
| Pixel Density | 403 ppi | - | |
| Aspect Ratio | 19.5:9 | 19.5:9 | |
| Max Brightness | 600 cd/m² | 450 cd/m² | Xiaomi MI Mix 3 5G has better display brightness than Xiaomi Redmi Note 9. |
| Contrast Ratio | 60000:1 | 1500:1 | Xiaomi MI Mix 3 5G has better display contrast ratio than Xiaomi Redmi Note 9. |
| HDR | Yes | - | Xiaomi MI Mix 3 5G has HDR. |
| Display Enhancement Technology | Sunlight mode | - | |
| Display Features | Always-on display, Reading mode, Colour temperature adjustment, night mode | Reading mode 2.0, Dot Display, Full Screen gestures | |
| Display Protection (Screen Protector) | - | Corning Gorilla Glass 5 (scratch resistant glass) |
| PROCESSOR | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 855 | MediaTek Helio G85 | |
|---|---|---|---|
| Clock Speed | 2.84 GHz | 2 GHz | Xiaomi MI Mix 3 5G has higher clock speed than Xiaomi Redmi Note 9. |
| Processor Core Qty | - | 8-core | |
| 64-bit Architecture | Yes | - | Xiaomi MI Mix 3 5G has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 640 | ARM G52 MC2 |
| MEMORY | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| RAM | LPDDR4X SDRAM - 6 GB | 3 GB | Xiaomi MI Mix 3 5G has more RAM than Xiaomi Redmi Note 9. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 64 GB | Xiaomi MI Mix 3 5G has more internal memory than Xiaomi Redmi Note 9. |
| Memory Interface | UFS 2.1 | - | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSD |
| CAMERA | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 4 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 48 Megapixel | Xiaomi Redmi Note 9 has better camera resolution than Xiaomi MI Mix 3 5G. |
| Sensor Size | - | 1/2" | |
| Sensor Name | Sony Exmor RS IMX363 sensor | - | |
| Lens Type | Wide-angle lens | - | |
| Lens Aperture | F/1.8 | F/1.79 | Xiaomi Redmi Note 9 has better lens aperture than Xiaomi MI Mix 3 5G. |
| Lens Construction | - | 6-element | |
| Field of View (FoV) | - | 79.4 degree(s) | |
| Pixel Size | 1.4 μm | 0.8 μm | Xiaomi MI Mix 3 5G has larger camera pixel size than Xiaomi Redmi Note 9. |
| Optical Image Stabiliser (OIS) | 4-axis OIS (Optical Image Stabilisation) | - | Xiaomi MI Mix 3 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | HDR | HDR, Kaleidoscope | |
| Camera Modes | Panorama, Nightscape capture mode, Personalized AI Beautify | Burst mode, Panorama, night mode, Smart ultra-wide angle mode, Photo timer, Custom watermark, Documents, Beautify, Levelling, Cinematic portraits | |
| Face Recognition (Face ID) | Face recognition | Face recognition | Both phones have face detection. |
| Light Source | Flash | Flash | |
| 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, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1920 x 1080 (1080p) at 960 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps | |
| Camera Features (Functions) | AI scene and object detection, Dual Pixel Autofocus technology, AI Dual camera, 4-in-1 Super Pixel, AI scene detection, AI dynamic bokeh, AI studio lighting, AI Super Resolution, low-light enhancement technology, AI special effects | 4-in-1 Super Pixel, AI scene detection, Portrait mode with background blurring, Ultra wide-angle edge distortion correction, Steady handheld night photography, full screen frame, AI watermark |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 8 Megapixel | Xiaomi MI Mix 3 5G has better second camera resolution than Xiaomi Redmi Note 9. |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/4" | |
| Sensor Name (2nd Camera) | Samsung S5K3M3+ | - | |
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Lens Element Qty (2nd Camera) | - | 5-element | |
| Field of View (2nd Camera) | - | 118 degree(s) | |
| Pixel Size (2nd Camera) | 1 μm | 1.2 μm | Xiaomi Redmi Note 9 has larger second camera pixel size than Xiaomi MI Mix 3 5G. |
| Camera Features (2nd Camera) | - | 5-piece 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 | |
| Camera Features (3rd Camera) | - | AF (2cm-10cm) |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Sensor Size (4th Camera) | - | 1/5" | |
| Lens Aperture (4th Camera) | - | F/2.4 | |
| Lens Element Qty (4th Camera) | - | 3-element | |
| Pixel Size (4th Camera) | - | 1.75 μm | |
| Camera Functions (4th Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 2 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 24 Megapixel | 13 Megapixel | Xiaomi MI Mix 3 5G has better front camera resolution than Xiaomi Redmi Note 9. |
| Sensor Size (Front) | - | 1/3.06" | |
| Sensor Name (Front) | Sony Exmor RS IMX576 sensor | - | |
| Lens Aperture (Front) | - | F/2.25 | |
| Lens Element Qty (Front) | - | 5-element | |
| Field of View (Front) | - | 74 degree(s) | |
| Pixel Size (Front) | 1.8 μm | 1.12 μm | Xiaomi MI Mix 3 5G has larger front camera pixel size than Xiaomi Redmi Note 9. |
| Special Effects (Front) | Magic mirror | HDR | |
| HDR Mode (Front) | Auto HDR mode | - | |
| Camera Modes (Front) | Bokeh Mode, AI Beautify, AI makeup | Panoramic selfies, AI portrait mode, AI Beautify | |
| Face Recognition (Face ID) | Face recognition | Face recognition | Both phones have face detection. |
| Light Source (Front) | - | Display flash | |
| Camera Features (Front) | AI portrait mode, 4-in-1 Super Pixel technology, Video Beautify, AI scene detection, AI dynamic bokeh, AI studio lighting, AI real-time video background blurring, AI eye light | Palm shutter, AI silhouette detection |
| SECOND FRONT CAMERA |
|---|
| Sensor Resolution (2nd Front) | 2 Megapixel | - | |
|---|---|---|---|
| Sensor Name (2nd Front) | OC0A10 | - | |
| Pixel Size (2nd Front) | 1.75 μm | - |
| BATTERY AND CHARGING | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| Battery Capacity (Battery Size) | 3800 mAh | 5020 mAh | Xiaomi Redmi Note 9 has larger battery capacity than Xiaomi MI Mix 3 5G. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 4.0+ | - | Xiaomi MI Mix 3 5G has fast charging technology. |
| Talk Time | - | 1980 minutes | |
| Run Time Details | - | Talk: up to 1980 min Gaming: up to 16 hrs Playback (Music): up to 147 hrs Navigation: up to 16 hrs |
|
| Battery Technology | - | Lithium polymer |
| CELLULAR | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 4G | Xiaomi MI Mix 3 5G has more advanced generation mobile network. |
| Navigation | GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE, 5G NR FR1 | VoLTE, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X | 850 GSM, 900 GSM, 1900 GSM, 2100 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 34, Band 38, Band 39, Band 40, Band 41 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, 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 800 DD, FDD 700 APT, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| 5G NR Band | N78 | - | |
| 5G NR Frequency | TDD TD 3500 | - | |
| 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 | - | Xiaomi MI Mix 3 5G has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| 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 | WAV, AAC, AMR, MP3, FLAC, APE (Monkey's Audio) | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP | MKV, XviD, M4V, MP4 | |
| Audio Amplifier | - | Smart PA |
| FEATURES | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, digital compass, gyro sensor, vibration sensor, ultrasonic distance sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, infrared (IR) sensor | |
| Security Devices | Face recognition, fingerprint reader | Face recognition, fingerprint reader | |
| Additional Phone Features | MIMO technology, MU-MIMO technology | Infrared remote control, HyperEngine technology |
| OTHERS | Xiaomi MI Mix 3 5G | Xiaomi Redmi Note 9 |
|---|
| Included Accessories | Protective cover, power adapter, SIM card removal tool, USB-C cable, USB-C to 3.5 jack audio cable | Protective cover, power adapter, SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | - | TUV Rheinland Low Blue Light Certification |
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