| DESIGN AND DIMENSIONS | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | CPH2089 | CPH2089 | |
| Form Factor | Touch | Touch | |
| Height | 159.6 mm | 165.2 mm | Realme C21 has greater height than OPPO Reno4 Pro 5G. |
| Width | 72.5 mm | 76.4 mm | Realme C21 has greater width than OPPO Reno4 Pro 5G. |
| Depth | 7.6 mm | 8.9 mm | OPPO Reno4 Pro 5G is narrower than OPPO Reno4 Pro 5G. |
| Weight | 172 g | 190 g | OPPO Reno4 Pro 5G is lighter than OPPO Reno4 Pro 5G. |
| Body Colour | Space black | Cross black | Cross blue | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.318 W/kg (body), 0.892 W/kg (head), 2.707 W/kg (limb) | 1.318 W/kg (body), 0.892 W/kg (head), 2.707 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C |
Micro-USB Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | AMOLED | LCD | |
| Screen Size (Display Size) | 6.5" | 6.5" | Both phones have the same screen size. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 1600 x 720 pixels | OPPO Reno4 Pro 5G has better screen resolution than Realme C21. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 402 ppi | 402 ppi | Both phones have the same pixel density. |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | 1100 cd/m² | 420 cd/m² | OPPO Reno4 Pro 5G has better display brightness than Realme C21. |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| Contrast Ratio | 5000000:1 | 5000000:1 | Both phones have the same display contrast ratio. |
| HDR | Yes | Yes | Both phones have HDR. |
| HDR Technology | HDR10+ | HDR10+ | |
| Display Features | DCI-P3 Wide colour gamut, Dark mode, 180Hz sampling rate, 90Hz 3D Curved Screen | Mini-drop display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | Corning Gorilla Glass 5 (scratch resistant glass) |
| PROCESSOR | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 765G | MediaTek Helio G35 | |
|---|---|---|---|
| Clock Speed | 2.4 GHz | 2.3 GHz | OPPO Reno4 Pro 5G has higher clock speed than Realme C21. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | Qualcomm ADRENO 620 | PowerVR GE8320 |
| MEMORY | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| RAM | LPDDR4X SDRAM - 12 GB | LPDDR4X SDRAM - 3 GB | OPPO Reno4 Pro 5G has more RAM than Realme C21. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 256 GB | 32 GB | OPPO Reno4 Pro 5G has more internal memory than Realme C21. |
| Memory Interface | UFS 2.1 | UFS 2.1 | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSD |
| CAMERA | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 3 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 13 Megapixel | OPPO Reno4 Pro 5G has better camera resolution than Realme C21. |
| Sensor Size | 1/2" | 1/2" | Both phones have the same camera sensor size. |
| Sensor Name | Sony Exmor RS IMX586 sensor | Sony Exmor RS IMX586 sensor | |
| Lens Aperture | F/1.7 | F/2.2 | OPPO Reno4 Pro 5G has better lens aperture than OPPO Reno4 Pro 5G. |
| Lens Construction | 6-element | 5-element | |
| Pixel Size | 0.8 μm | 0.8 μm | Both phones have the same camera pixel size. |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | Both phones have optical image stabilization. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | Yes | |
| Minimum Focal Length (Focal Distance) | 26 mm | 26 mm | |
| Optical Zoom | 2x | 2x | Both phones have the same optical zoom. |
| Digital Zoom | 20x | 4x | OPPO Reno4 Pro 5G has better digital zoom than Realme C21. |
| Special Effects | HDR, Stickers | HDR | |
| Camera Modes | Panorama, Time-lapse mode, night mode, Expert Mode, Bokeh Mode, AI Beautify | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape | |
| Light Source | LED flash | LED flash | |
| Still Image Resolutions | 8000 x 6000 | 8000 x 6000 | |
| 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, 1280 x 720 (720p) at 60 fps | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), 5x Hybrid Zoom, 4-in-1 Pixel technology, contrast detection auto-focus (CDAF), laser detection auto focus (LDAF), Ultra Steady Video 3.0 | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 2 Megapixel | OPPO Reno4 Pro 5G has better second camera resolution than Realme C21. |
|---|---|---|---|
| Sensor Size (2nd Camera) | 1/2.43" | 1/2.43" | Both phones have the same sensor size of the second camera. |
| Sensor Name (2nd Camera) | Sony Exmor RX IMX708 sensor | Sony Exmor RX IMX708 sensor | |
| Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.4 | OPPO Reno4 Pro 5G has better second camera lens aperture than OPPO Reno4 Pro 5G. |
| Lens Element Qty (2nd Camera) | - | 3-element | |
| Field of View (2nd Camera) | 120 degree(s) | 120 degree(s) | Both phones have the same second camera lens field of view. |
| Pixel Size (2nd Camera) | 1.4 μm | 1.4 μm | Both phones have the same second camera pixel size. |
| Minimum Focal Length (2nd Camera) | 16 mm | 16 mm | |
| Camera Functions (2nd Camera) | Autofocus | B&W lens | |
| Camera Modes (2nd Camera) | Ultra Night Mode | Ultra Night Mode | |
| Camera Features (2nd Camera) | 6P lens, 3cm macro shooting | 6P lens, 3cm macro shooting |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 13 Megapixel | 2 Megapixel | OPPO Reno4 Pro 5G has higher resolution third camera than Realme C21. |
|---|---|---|---|
| Lens Type (3rd Camera) | Telephoto lens | Telephoto lens | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.4 | Both phones have the same lens aperture of the third camera. |
| Lens Element Qty (3rd Camera) | 5-element | 3-element | |
| Pixel Size (3rd Camera) | 1 μm | 1 μm | Both phones have the same third camera pixel size. |
| Minimum Focal Length (3rd Camera) | 52 mm | 52 mm | |
| Camera Functions (3rd Camera) | Autofocus | Macro camera | |
| Camera Features (3rd Camera) | - | 4cm macro photography |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 32 Megapixel | 5 Megapixel | OPPO Reno4 Pro 5G has better front camera resolution than Realme C21. |
| Lens Aperture (Front) | F/2.4 | F/2.2 | Realme C21 has better front lens aperture than OPPO Reno4 Pro 5G. |
| Lens Element Qty (Front) | 5-element | 3-element | |
| Special Effects (Front) | - | HDR | |
| Camera Modes (Front) | Panorama, Time-lapse mode, Slow motion mode, night mode, Expert Mode, AI Beauty, Portrait | Time-lapse mode, Beauty mode, portrait mode, AI Beauty, Filter mode, Panoramic mode | |
| Face Recognition (Face ID) | - | Face recognition | Realme C21 has face detection. |
| Still Image Resolutions (Front) | 6560 x 4928 | 6560 x 4928 | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps |
| BATTERY AND CHARGING | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 5000 mAh | Realme C21 has larger battery capacity than OPPO Reno4 Pro 5G. |
|---|---|---|---|
| Fast Charging Technology | SuperVOOC 2.0 Flash Charge | SuperVOOC 2.0 Flash Charge | Both phones have fast charging technology. |
| Recharge Time (Charging Time) | 36 min | 36 min | Both phones have the same charging time. |
| Standby Time | 425 hours | 425 hours | Both phones have the same standby time. |
| Talk Time | 1440 minutes | 1440 minutes | Both phones have the same battery life when making calls. |
| Run Time Details |
Standby: up to 425 hrs Talk: up to 1440 min Playback (audio (w/headset)): up to 81 hrs Playback (audio (via speakers)): up to 27 hrs Playback (video): up to 18 hrs |
Standby: up to 425 hrs Talk: up to 1440 min Playback (audio (w/headset)): up to 81 hrs Playback (audio (via speakers)): up to 27 hrs Playback (video): up to 18 hrs |
| CELLULAR | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 4G | OPPO Reno4 Pro 5G has more advanced generation mobile network. |
| Operating System | ColorOS 7.2 (based on Android 10) | Android 10 | |
| User Interface | - | Realme UI | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| Data Transmission | FDD-LTE, TDD-LTE, 5G NR FR1 | FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 6, Band 8, Band 19 | Band 1, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 800, 900, 800 | 2100, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 17, Band 18, Band 19, Band 20, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 42, 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 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500, 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, n77, n78, n40 | N1, n3, n5, n7, n8, n20, n28, n38, n41, 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, TDD TD 3700, TDD TD 3500, TDD 2300 | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, TDD TD 3700, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 5.1 | Bluetooth 5.0 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| MEDIA | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), apt-X, LDAC, MID, SBC, apt-X HD, APTX-TWS+ | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), apt-X, LDAC, MID, SBC, apt-X HD, APTX-TWS+ | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, MOV, WMV, ASF, 3GP, MP4 | MKV, FLV, AVI, MOV, WMV, ASF, 3GP, MP4 | |
| Sound Enhancements | Dolby Atmos sound technology | Dolby Atmos sound technology |
| FEATURES | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| 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, pedometer, gyro sensor, geomagnetic sensor, gravity sensor | Accelerometer, proximity sensor, magnetometer, light sensor | |
| Security Devices | Fingerprint reader (under display) | Fingerprint reader | |
| Additional Phone Features | MU-MIMO technology | Super power saving mode, HyperEngine technology, Reverse charging |
| OTHERS | OPPO Reno4 Pro 5G | Realme C21 |
|---|
| Included Accessories | Headphones, power adapter, SIM card removal tool, USB-C cable, protective case | USB cable, power adapter, SIM card removal tool | |
|---|---|---|---|
| Compliant Standards | - | TUV Rheinland |
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