In depth comparison and review of Xiaomi MI A3 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 A3 | OnePlus 9 Pro |
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Product Type | Smartphone | Smartphone | |
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Form Factor | Touch | Touch | |
Height | 153.48 mm | 163.2 mm | OnePlus 9 Pro has greater height than Xiaomi MI A3. |
Width | 71.85 mm | 73.6 mm | OnePlus 9 Pro has greater width than Xiaomi MI A3. |
Depth | 8.475 mm | 8.7 mm | Xiaomi MI A3 is narrower than Xiaomi MI A3. |
Weight | 173.8 g | 197 g | Xiaomi MI A3 is lighter than Xiaomi MI A3. |
Body Colour | Kind of grey | Morning mist | Stellar black | |
Body Material | Corning Gorilla Glass 5 | - | |
Waterproof (Water-resistant) | - | - | |
SAR Value | 2.34 W/kg (limb), 1.097 W/kg (body), 0.301 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 |
DISPLAY | Xiaomi MI A3 | OnePlus 9 Pro |
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Display Type | OLED display | OLED display | |
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Display Technology | AMOLED | Fluid Amoled | |
Screen Size (Display Size) | 6.088" | 6.7" | OnePlus 9 Pro has larger screen size than Xiaomi MI A3. |
Screen Resolution (Display Resolution) | 1560 x 720 pixels | 3216 x 1440 pixels | OnePlus 9 Pro has better screen resolution than Xiaomi MI A3. |
Display Format | HD+ | - | |
Pixel Density | - | 525 ppi | |
Aspect Ratio | 19.5:9 | 20.1:9 | |
Colour Depth | - | 1.07 billion colours | |
Contrast Ratio | 60000:1 | - | |
Display Refresh Rate | - | 120 Hz | |
Display Features | 2.5D Glass, Dot Drop display | 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 5 (scratch resistant glass) | Corning Gorilla Glass (scratch resistant glass) |
PROCESSOR | Xiaomi MI A3 | OnePlus 9 Pro |
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Processor Type (CPU) | Qualcomm Snapdragon 665 | Qualcomm Snapdragon 888 | |
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Clock Speed | 2 GHz | - | |
Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
Graphics System (GPU) | Qualcomm ADRENO 610 | Qualcomm ADRENO 660 |
MEMORY | Xiaomi MI A3 | OnePlus 9 Pro |
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RAM | LPDDR4X SDRAM - 4 GB | LPDDR5 SDRAM - 8 GB | OnePlus 9 Pro has more RAM than Xiaomi MI A3. |
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Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | OnePlus 9 Pro has more internal memory than Xiaomi MI A3. |
Memory Interface | - | UFS 3.1 2-lane | |
Supported Flash Memory Cards (Expandable Memory) | Up to 256 GB | - |
CAMERA | Xiaomi MI A3 | OnePlus 9 Pro |
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MAIN CAMERA |
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Number of Main Cameras | 3 | 4 | |
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Sensor Resolution | 48 Megapixel | 48 Megapixel | Both phones have the same camera resolution. |
Sensor Size | 1/2" | 1/1.43" | Xiaomi MI A3 has better camera sensor size than OnePlus 9 Pro. |
Sensor Name | - | Sony Exmor RS IMX789 sensor | |
Lens Aperture | F/1.79 | F/1.8 | Xiaomi MI A3 has better lens aperture than Xiaomi MI A3. |
Lens Construction | 6-element | 7-element | |
Pixel Size | 1.6 μm | 1.12 μm | Xiaomi MI A3 has larger camera pixel size than OnePlus 9 Pro. |
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 | |
Camera Modes | 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 | |
Light Source | Flash | Dual LED 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 | 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) | Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), 4-in-1 Super Pixel, AI scene detection, AI Triple camera, 27 different scenes | Continuous Auto Focus (CAF), RAW image capture, All Pixel OmniDirectional PDAF, Hasselblad Camera, Natural Color Calibration |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | 8 Megapixel | 50 Megapixel | OnePlus 9 Pro has better second camera resolution than Xiaomi MI A3. |
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Sensor Size (2nd Camera) | - | 1/1.56" | |
Sensor Name (2nd Camera) | - | Sony Exmor RS IMX766 sensor | |
Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
Lens Aperture (2nd Camera) | F/2.2 | F/2.2 | Both phones have the same second camera lens aperture. |
Lens Element Qty (2nd Camera) | - | 7-element | |
Field of View (2nd Camera) | 118 degree(s) | - | |
Camera Features (2nd Camera) | - | Freeform Lens |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | 2 Megapixel | 8 Megapixel | OnePlus 9 Pro has higher resolution third camera than Xiaomi MI A3. |
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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. |
Camera Functions (3rd Camera) | Depth camera | - |
FOURTH CAMERA |
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Sensor Resolution (4th Camera) | - | 2 Megapixel | |
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Lens Element Qty (4th Camera) | - | 3-element | |
Camera Functions (4th Camera) | - | Monochrome |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 32 Megapixel | 16 Megapixel | Xiaomi MI A3 has better front camera resolution than OnePlus 9 Pro. |
Sensor Name (Front) | - | Sony Exmor RX IMX471 sensor | |
Lens Aperture (Front) | F/2.0 | F/2.4 | Xiaomi MI A3 has better front lens aperture than Xiaomi MI A3. |
Lens Element Qty (Front) | 5-element | - | |
Field of View (Front) | 79 degree(s) | - | |
Pixel Size (Front) | 1.6 μm | 1 μm | Xiaomi MI A3 has larger front camera pixel size than OnePlus 9 Pro. |
Focus Adjustment | Focus free | Focus free | |
Special Effects (Front) | - | HDR, face retouch | |
Camera Modes (Front) | Selfie panorama, AI portrait mode, AI Beautify | Time-lapse mode | |
Light Source (Front) | - | Display flash | |
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) | 4-in-1 Super Pixel technology, AI scene detection, 12 different scenes, AI Selfie, Palm shutter, AI face unlock | Electronic Image Stabiliser (EIS) |
BATTERY AND CHARGING | Xiaomi MI A3 | OnePlus 9 Pro |
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Battery Capacity (Battery Size) | 4030 mAh | 4500 mAh | OnePlus 9 Pro has larger battery capacity than Xiaomi MI A3. |
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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 |
CELLULAR | Xiaomi MI A3 | OnePlus 9 Pro |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 5G | OnePlus 9 Pro has more advanced generation mobile network. |
Operating System | - | OxygenOS (based on Android 11) | |
Intelligent Assistant | Google Assistant | - | |
Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo |
COMMUNICATIONS | Xiaomi MI A3 | OnePlus 9 Pro |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | LTE Advanced, FDD-LTE, TDD-LTE, 5G NR FR1 | |
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2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | - | |
3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 8, Band 9, Band 19 | |
3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 1700, 850, 900, 1700, 800 | |
4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40 | 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 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300 | 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 A3 | OnePlus 9 Pro |
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Supported Digital Audio Standards | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, 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 | |
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Supported Digital Video Standards | MKV, XviD, H.264, M4V, MPEG4-ASP, MPEG-4 SP, MP4 | MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4 | |
Sound Enhancements | - | Dolby Atmos sound technology |
FEATURES | Xiaomi MI A3 | OnePlus 9 Pro |
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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 | |
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Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, vibration sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, RGB sensor, flicker sensor, sensor core | |
Security Devices | Fingerprint reader (under display) | Fingerprint reader (under display), face recognition | |
Additional Phone Features | AI face unlock | Face Unlock, Noise Cancellation Technology, MIMO technology, Alert Slider, dual stereo speakers |
OTHERS | Xiaomi MI A3 | OnePlus 9 Pro |
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Included Accessories | Power adapter, SIM card removal tool, USB-C cable, soft case | SIM card removal tool, sticker, screen protector, protective case, Warp Charge 65 power adapter, Warp Type-C cable |
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