Side by side comparison and review of OnePlus 9 Pro and Realme C31. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | OnePlus 9 Pro | Realme C31 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | RMX3501 | |
| Form Factor | Touch | Touch | |
| Height | 163.2 mm | 164.7 mm | Realme C31 has greater height than OnePlus 9 Pro. |
| Width | 73.6 mm | 76.1 mm | Realme C31 has greater width than OnePlus 9 Pro. |
| Depth | 8.7 mm | 8.4 mm | Realme C31 is narrower than OnePlus 9 Pro. |
| Weight | 197 g | 197 g | Both phones are the same weight. |
| Body Colour | Morning mist | Stellar black | Light silver | Dark green | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 2.77 W/kg (limb), 1.26 W/kg (body), 0.99 W/kg (head) | 1.147 W/kg (body), 0.957 W/kg (head), 2.663 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | OnePlus 9 Pro | Realme C31 |
|---|
| Display Type | OLED display | - | |
|---|---|---|---|
| Display Technology | Fluid Amoled | - | |
| Screen Size (Display Size) | 6.7" | 6.5" | OnePlus 9 Pro has larger screen size than Realme C31. |
| Screen Resolution (Display Resolution) | 3216 x 1440 pixels | 1600 x 720 pixels | OnePlus 9 Pro has better screen resolution than Realme C31. |
| Display Format | - | HD+ | |
| Pixel Density | 525 ppi | - | |
| Aspect Ratio | 20.1:9 | 20:9 | |
| Colour Depth | 1.07 billion colours | 16.7 million colours | OnePlus 9 Pro has better colour depth than Realme C31. |
| Display Refresh Rate | 120 Hz | 60 Hz | OnePlus 9 Pro has better refresh rate than Realme C31. |
| Touch Sampling Rate | - | 120 Hz | |
| Display Features | 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 | Ultra-clear View | |
| Display Protection (Screen Protector) | Corning Gorilla Glass (scratch resistant glass) | - |
| PROCESSOR | OnePlus 9 Pro | Realme C31 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 888 | Unisoc | |
|---|---|---|---|
| Processor Number | - | T612 | |
| Clock Speed | - | 1.82 GHz | |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | Qualcomm ADRENO 660 | ARM Mali-G57 |
| MEMORY | OnePlus 9 Pro | Realme C31 |
|---|
| RAM | LPDDR5 SDRAM - 8 GB | LPDDR4X SDRAM - 4 GB + up to 7 GB virtual extension | OnePlus 9 Pro has more RAM than Realme C31. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 64 GB | OnePlus 9 Pro has more internal memory than Realme C31. |
| Memory Interface | UFS 3.1 2-lane | UFS 2.2 | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | OnePlus 9 Pro | Realme C31 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 3 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 13 Megapixel | OnePlus 9 Pro has better camera resolution than Realme C31. |
| Sensor Size | 1/1.43" | - | |
| Sensor Name | Sony Exmor RS IMX789 sensor | - | |
| Lens Aperture | F/1.8 | F/2.2 | OnePlus 9 Pro has better lens aperture than OnePlus 9 Pro. |
| Lens Construction | 7-element | 5-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 | 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 | Burst mode, Panorama, Time-lapse mode, Pro mode, Portrait, Filter mode, Macro mode, Night Pro | |
| Light Source | Dual LED flash | LED flash | |
| Video Resolutions | 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 | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 854 x 480 (480p) at 30 fps | |
| Camera Features (Functions) | Continuous Auto Focus (CAF), RAW image capture, All Pixel OmniDirectional PDAF, Hasselblad Camera, Natural Color Calibration | AI Triple camera |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 50 Megapixel | 2 Megapixel | OnePlus 9 Pro has better second camera resolution than Realme C31. |
|---|---|---|---|
| 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 | F/2.4 | OnePlus 9 Pro has better second camera lens aperture than OnePlus 9 Pro. |
| Lens Element Qty (2nd Camera) | 7-element | - | |
| Camera Functions (2nd Camera) | - | Macro camera | |
| Camera Features (2nd Camera) | Freeform Lens | 4cm macro photography |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 8 Megapixel | 0.3 Megapixel | OnePlus 9 Pro has higher resolution third camera than Realme C31. |
|---|---|---|---|
| Lens Type (3rd Camera) | Telephoto lens | - | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.8 | OnePlus 9 Pro has better third camera lens aperture than OnePlus 9 Pro. |
| 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) | - | B&W lens |
| 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) | 16 Megapixel | 5 Megapixel | OnePlus 9 Pro has better front camera resolution than Realme C31. |
| Sensor Name (Front) | Sony Exmor RX IMX471 sensor | - | |
| Lens Aperture (Front) | F/2.4 | F/2.2 | Realme C31 has better front lens aperture than OnePlus 9 Pro. |
| Lens Element Qty (Front) | - | 3-element | |
| Pixel Size (Front) | 1 μm | - | |
| Focus Adjustment | Focus free | - | |
| Special Effects (Front) | HDR, face retouch | HDR | |
| Camera Modes (Front) | Time-lapse mode | Beauty mode, Filter mode | |
| Light Source (Front) | Display flash | - | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps | 1280 x 720 (720p) at 30 fps, 854 x 480 (480p) at 30 fps | |
| Camera Features (Front) | Electronic Image Stabiliser (EIS) | AI Selfie |
| BATTERY AND CHARGING | OnePlus 9 Pro | Realme C31 |
|---|
| Battery Capacity (Battery Size) | 4500 mAh | 5000 mAh | Realme C31 has larger battery capacity than OnePlus 9 Pro. |
|---|---|---|---|
| Fast Charging Technology | Warp Charge 65T technology | - | OnePlus 9 Pro has fast charging technology. |
| Wireless Charging | Yes | - | OnePlus 9 Pro can be charged wirelessly. |
| Wireless Charging Standards | Qi, Warp Charge 50 Wireless | - |
| CELLULAR | OnePlus 9 Pro | Realme C31 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 4G | OnePlus 9 Pro has more advanced generation mobile network. |
| Operating System | OxygenOS (based on Android 11) | Android 11 | |
| User Interface | - | Realme UI (R Edition) | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, A-GPS, BeiDou, Galileo |
| COMMUNICATIONS | OnePlus 9 Pro | Realme C31 |
|---|
| Data Transmission | LTE Advanced, FDD-LTE, TDD-LTE, 5G NR FR1 | GPRS, EDGE, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | - | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8, Band 9, Band 19 | Band 1, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900, 1700, 800 | 2100, 850, 900 | |
| 4G LTE Band | 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 | Band 1, Band 3, 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 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 | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| 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 | IEEE 802.11a/b/g/n/ac/ax | Wi-Fi | |
| Bluetooth | Bluetooth 5.2 | Bluetooth 5.0 | |
| NFC | Yes | - | OnePlus 9 Pro has NFC reader for mobile payments. |
| Modem | Snapdragon X60 5G | - |
| MEDIA | OnePlus 9 Pro | Realme C31 |
|---|
| Supported Digital Audio Standards | 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, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4 | - | |
| Sound Enhancements | Dolby Atmos sound technology | - |
| FEATURES | OnePlus 9 Pro | Realme C31 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, RGB sensor, flicker sensor, sensor core | Accelerometer, proximity sensor, magnetometer, gyro sensor, light sensor | |
| Security Devices | Fingerprint reader (under display), face recognition | Fingerprint reader (side) | |
| Additional Phone Features | Face Unlock, Noise Cancellation Technology, MIMO technology, Alert Slider, dual stereo speakers | MIMO technology, Ultra Power Saving Mode, Fast Charging |
| OTHERS | OnePlus 9 Pro | Realme C31 |
|---|
| Included Accessories | SIM card removal tool, sticker, screen protector, protective case, Warp Charge 65 power adapter, Warp Type-C cable | SIM card removal tool, 10W charger, micro-USB cable | |
|---|---|---|---|
| Compliant Standards | - | TUV Rheinland |
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