In depth comparison and review of Xiaomi MI Max 3 and OnePlus 9 Pro. 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 Max 3 | OnePlus 9 Pro |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 176.15 mm | 163.2 mm | Xiaomi MI Max 3 has greater height than OnePlus 9 Pro. |
| Width | 87.4 mm | 73.6 mm | Xiaomi MI Max 3 has greater width than OnePlus 9 Pro. |
| Depth | 7.99 mm | 8.7 mm | Xiaomi MI Max 3 is narrower than Xiaomi MI Max 3. |
| Weight | 221 g | 197 g | OnePlus 9 Pro is lighter than Xiaomi MI Max 3. |
| Body Colour | - | Morning mist | Stellar black | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.417 W/kg (body), 1.584 W/kg (head) | 2.77 W/kg (limb), 1.26 W/kg (body), 0.99 W/kg (head) | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C | |
| 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 Max 3 | OnePlus 9 Pro |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | IPS | Fluid Amoled | |
| Screen Size (Display Size) | 6.9" | 6.7" | Xiaomi MI Max 3 has larger screen size than OnePlus 9 Pro. |
| Screen Resolution (Display Resolution) | 2160 x 1080 pixels | 3216 x 1440 pixels | OnePlus 9 Pro has better screen resolution than Xiaomi MI Max 3. |
| Display Format | Full HD+ | - | |
| Pixel Density | - | 525 ppi | |
| Aspect Ratio | 18:9 | 20.1:9 | |
| Max Brightness | 520 cd/m² | - | |
| Colour Depth | 16.7 million colours | 1.07 billion colours | OnePlus 9 Pro has better colour depth than Xiaomi MI Max 3. |
| Contrast Ratio | 1500:1 | - | |
| Display Refresh Rate | - | 120 Hz | |
| Display Features | Night Display, Sunlight Display, Reading mode, Colour temperature adjustment | Reading mode, night mode, Wide colour display (P3), Vibrant Color Effect Pro, Motion Graphics Smoothing, sRGB support, Hyper Touch, Adaptive Display, Fluid Display 2.0 | |
| Display Protection (Screen Protector) | - | Corning Gorilla Glass (scratch resistant glass) |
| PROCESSOR | Xiaomi MI Max 3 | OnePlus 9 Pro |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 636 | Qualcomm Snapdragon 888 | |
|---|---|---|---|
| Clock Speed | 1.8 GHz | - | |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | Xiaomi MI Max 3 has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 509 | Qualcomm ADRENO 660 |
| MEMORY | Xiaomi MI Max 3 | OnePlus 9 Pro |
|---|
| RAM | LPDDR4X SDRAM - 4 GB | LPDDR5 SDRAM - 8 GB | OnePlus 9 Pro has more RAM than Xiaomi MI Max 3. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | OnePlus 9 Pro has more internal memory than Xiaomi MI Max 3. |
| Memory Interface | - | UFS 3.1 2-lane | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | - |
| CAMERA | Xiaomi MI Max 3 | OnePlus 9 Pro |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 4 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 48 Megapixel | OnePlus 9 Pro has better camera resolution than Xiaomi MI Max 3. |
| Sensor Size | - | 1/1.43" | |
| Sensor Name | - | Sony Exmor RS IMX789 sensor | |
| Lens Aperture | F/1.9 | F/1.8 | OnePlus 9 Pro has better lens aperture than Xiaomi MI Max 3. |
| Lens Construction | - | 7-element | |
| Pixel Size | - | 1.12 μm | |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | OnePlus 9 Pro has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | - | Yes | |
| Special Effects | HDR | HDR | |
| Camera Modes | Burst mode, Panorama, AI portrait mode | Panorama, Time-lapse mode, Pro mode, HYPERLAPSE, Nightscape capture mode, Portrait, Filter mode, Super Macro, Macro mode, Portrait video, UltraShot HDR, Tracking Shot, Smart Scene Recognition, Tilt-shift mode, Focus Peaking, Cat/Dog Face Focus, Super Stable, Video Nightscape | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI Max 3 has face detection. |
| Light Source | Dual LED flash | Dual LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1280 x 720 (720p) at 480 fps, 7680 x 4320 (8K) at 30fps, 3840 x 2160 (4K) at 120 fps | |
| Camera Features (Functions) | Dual Pixel Autofocus technology, AI scene detection | Continuous Auto Focus (CAF), RAW image capture, All Pixel OmniDirectional PDAF, Hasselblad Camera, Natural Color Calibration |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 5 Megapixel | 50 Megapixel | OnePlus 9 Pro has better second camera resolution than Xiaomi MI Max 3. |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/1.56" | |
| Sensor Name (2nd Camera) | - | Sony Exmor RS IMX766 sensor | |
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Lens Element Qty (2nd Camera) | - | 7-element | |
| Camera Features (2nd Camera) | - | Freeform Lens |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 8 Megapixel | |
|---|---|---|---|
| Lens Type (3rd Camera) | - | Telephoto lens | |
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Pixel Size (3rd Camera) | - | 1 μm | |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | OnePlus 9 Pro has optical stabilisation of the third camera. |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Element Qty (4th Camera) | - | 3-element | |
| Camera Functions (4th Camera) | - | Monochrome |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 16 Megapixel | OnePlus 9 Pro has better front camera resolution than Xiaomi MI Max 3. |
| Sensor Name (Front) | - | Sony Exmor RX IMX471 sensor | |
| Lens Aperture (Front) | F/2.0 | F/2.4 | Xiaomi MI Max 3 has better front lens aperture than Xiaomi MI Max 3. |
| Pixel Size (Front) | - | 1 μm | |
| Focus Adjustment | - | Focus free | |
| Special Effects (Front) | - | HDR, face retouch | |
| Camera Modes (Front) | AI portrait mode, AI Beautify | Time-lapse mode | |
| Face Recognition (Face ID) | Face detection | - | Xiaomi MI Max 3 has face detection. |
| Light Source (Front) | - | Display flash | |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Front) | - | Electronic Image Stabiliser (EIS) |
| BATTERY AND CHARGING | Xiaomi MI Max 3 | OnePlus 9 Pro |
|---|
| Battery Capacity (Battery Size) | 5500 mAh | 4500 mAh | Xiaomi MI Max 3 has larger battery capacity than OnePlus 9 Pro. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 3.0 | Warp Charge 65T technology | Both phones have fast charging technology. |
| Wireless Charging | - | Yes | OnePlus 9 Pro can be charged wirelessly. |
| Wireless Charging Standards | - | Qi, Warp Charge 50 Wireless | |
| Standby Time | 474 hours | - | |
| Run Time Details | Playback (video): up to 17 hrs Gaming: up to 10 hrs Playback (audio): up to 233 hrs Standby: up to 474 hrs |
- |
| CELLULAR | Xiaomi MI Max 3 | OnePlus 9 Pro |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | OnePlus 9 Pro has more advanced generation mobile network. |
| Operating System | Android 8.1 Oreo | OxygenOS (based on Android 11) | |
| User Interface | MIUI 10 | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Xiaomi MI Max 3 | OnePlus 9 Pro |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, VoLTE | LTE Advanced, FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 3G UMTS Band | Band 1, Band 2, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 8, Band 9, Band 19 | |
| 3G UMTS Frequency | 2100, 1900, 850, 900 | 2100, 1900, 1700, 850, 900, 1700, 800 | |
| 4G LTE Band | Band 1, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, 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 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, 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 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | - | N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n77, n78, n40 | |
| 5G NR Frequency | - | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3700, TDD TD 3500, TDD 2300 | |
| Wireless Interface | Infrared (IrDA), IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac/ax | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.2 | |
| NFC | - | Yes | OnePlus 9 Pro has NFC reader for mobile payments. |
| Modem | - | Snapdragon X60 5G | |
| Messaging Services | SMS, MMS | - |
| MEDIA | Xiaomi MI Max 3 | OnePlus 9 Pro |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), DSD, AMR-WB, AMR-NB | WAV, WMA, AAC, MP3, FLAC, AC-3, AAC +, OGG, APE (Monkey's Audio), M4A, apt-X, LDAC, IMY, EAC3, MID, AMR-WB, AMR-NB, apt-X HD, EAC3-JOC, AC-4 | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, MPEG4-ASP | MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4 | |
| Sound Enhancements | - | Dolby Atmos sound technology |
| FEATURES | Xiaomi MI Max 3 | OnePlus 9 Pro |
|---|
| 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, proximity sensor, digital compass, gyro sensor, hall sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, RGB sensor, flicker sensor, sensor core | |
| Security Devices | Fingerprint reader | Fingerprint reader (under display), face recognition | |
| Additional Phone Features | Face Unlock, infrared remote control, Split Screen | Face Unlock, Noise Cancellation Technology, MIMO technology, Alert Slider, dual stereo speakers |
| OTHERS | Xiaomi MI Max 3 | OnePlus 9 Pro |
|---|
| Included Accessories | Power adapter, SIM card removal tool, USB-C cable | SIM card removal tool, sticker, screen protector, protective case, Warp Charge 65 power adapter, Warp Type-C cable |
|---|
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