In depth comparison and review of Realme C21 and OnePlus Nord 2 5G. 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 | Realme C21 | OnePlus Nord 2 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 165.2 mm | 159.12 mm | Realme C21 has greater height than OnePlus Nord 2 5G. |
| Width | 76.4 mm | 73.31 mm | Realme C21 has greater width than OnePlus Nord 2 5G. |
| Depth | 8.9 mm | 8.25 mm | OnePlus Nord 2 5G is narrower than Realme C21. |
| Weight | 190 g | 189 g | OnePlus Nord 2 5G is lighter than Realme C21. |
| Body Colour | Cross black | Cross blue | Blue haze | Grey sierra | |
| Waterproof (Water-resistant) | - | - | |
| Repairability Index | - | 7 (out of 10) | |
| Connector Type | Micro-USB 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 | Realme C21 | OnePlus Nord 2 5G |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | LCD | Fluid Amoled | |
| Screen Size (Display Size) | 6.5" | 6.43" | Realme C21 has larger screen size than OnePlus Nord 2 5G. |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 2400 x 1080 pixels | OnePlus Nord 2 5G has better screen resolution than Realme C21. |
| Display Format | HD+ | Full HD+ | |
| Pixel Density | - | 410 ppi | |
| Aspect Ratio | 20:9 | 20:9 | |
| Max Brightness | 420 cd/m² | - | |
| Display Refresh Rate | - | 90 Hz | |
| Display Features | Mini-drop display | Wide colour display (P3), sRGB support |
| PROCESSOR | Realme C21 | OnePlus Nord 2 5G |
|---|
| Processor Type (CPU) | MediaTek Helio G35 | MediaTek Dimensity 1200-AI | |
|---|---|---|---|
| Clock Speed | 2.3 GHz | 3 GHz | OnePlus Nord 2 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) | PowerVR GE8320 | ARM Mali-G77 MC9 |
| MEMORY | Realme C21 | OnePlus Nord 2 5G |
|---|
| RAM | LPDDR4X SDRAM - 3 GB | LPDDR4X SDRAM - 8 GB | OnePlus Nord 2 5G has more RAM than Realme C21. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 128 GB | OnePlus Nord 2 5G has more internal memory than Realme C21. |
| Memory Interface | - | UFS 3.1 | |
| Supported Flash Memory Cards (Expandable Memory) | microSD | - |
| CAMERA | Realme C21 | OnePlus Nord 2 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 3 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 50 Megapixel | OnePlus Nord 2 5G has better camera resolution than Realme C21. |
| Sensor Name | - | Sony Exmor RS IMX766 sensor | |
| Lens Aperture | F/2.2 | F/1.88 | OnePlus Nord 2 5G has better lens aperture than Realme C21. |
| Lens Construction | 5-element | 6-element | |
| Pixel Size | - | 1 μm | |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | OnePlus Nord 2 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | 4x | - | |
| Special Effects | HDR | HDR | |
| Camera Modes | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape | Time-lapse mode, Ultra nightscape mode, Night portrait mode, Dual-View Video | |
| Light Source | LED flash | Dual LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps, 1280 x 720 (720p) at 60 fps, Super slow motion video 1920 x 1080 (1080p) at 120 fps, Super slow motion video 1280 x 720 (720p) at 240 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost | Phase Detect Auto-Focus (PDAF), Continuous Auto Focus (CAF), AI photo optimisation, AI video optimisation |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 2 Megapixel | 8 Megapixel | OnePlus Nord 2 5G has better second camera resolution than Realme C21. |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.4 | F/2.25 | OnePlus Nord 2 5G has better second camera lens aperture than Realme C21. |
| Lens Element Qty (2nd Camera) | 3-element | - | |
| Field of View (2nd Camera) | - | 119.7 degree(s) | |
| Camera Functions (2nd Camera) | B&W lens | - | |
| Camera Features (2nd Camera) | - | Electronic Image Stabiliser (EIS) |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | 2 Megapixel | Both phones have the same third camera resolution. |
|---|---|---|---|
| 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) | 3-element | - | |
| Camera Functions (3rd Camera) | Macro camera | Monochrome | |
| Camera Features (3rd Camera) | 4cm macro photography | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 32 Megapixel | OnePlus Nord 2 5G has better front camera resolution than Realme C21. |
| Sensor Name (Front) | - | Sony Exmor RS IMX615 sensor | |
| Lens Aperture (Front) | F/2.2 | F/2.45 | Realme C21 has better front lens aperture than Realme C21. |
| Lens Element Qty (Front) | 3-element | - | |
| Pixel Size (Front) | - | 0.8 μm | |
| Focus Adjustment | - | Focus free | |
| Special Effects (Front) | HDR | - | |
| Camera Modes (Front) | Time-lapse mode, Beauty mode, portrait mode, AI Beauty, Filter mode, Panoramic mode | Time-lapse mode | |
| Face Recognition (Face ID) | Face recognition | - | Realme C21 has face detection. |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Front) | - | Electronic Image Stabiliser (EIS), Group Shot 2.0 |
| BATTERY AND CHARGING | Realme C21 | OnePlus Nord 2 5G |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | 4500 mAh | Realme C21 has larger battery capacity than OnePlus Nord 2 5G. |
|---|---|---|---|
| Fast Charging Technology | - | Warp Charge 65 technology | OnePlus Nord 2 5G has fast charging technology. |
| CELLULAR | Realme C21 | OnePlus Nord 2 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | OnePlus Nord 2 5G has more advanced generation mobile network. |
| Operating System | Android 10 | OxygenOS (based on Android 11) | |
| User Interface | Realme UI | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo, NavIC |
| COMMUNICATIONS | Realme C21 | OnePlus Nord 2 5G |
|---|
| Data Transmission | FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 8, Band 19 | |
| 3G UMTS Frequency | 2100, 850, 900 | 2100, 1900, 1700, 850, 900, 800 | |
| 4G LTE Band | Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | 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 34, Band 38, Band 39, Band 40, Band 41, Band 66 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | 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 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | - | N1, n3, n7, n8, n20, n28, n38, n41, n78 | |
| 5G NR Frequency | - | FDD 2100, FDD 1800, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, TDD TD 3500 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac/ax | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.2 | |
| NFC | - | Yes | OnePlus Nord 2 5G has NFC reader for mobile payments. |
| MEDIA | Realme C21 | OnePlus Nord 2 5G |
|---|
| Supported Digital Audio Standards | - | WAV, WMA, AAC, AIFF, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), apt-X, LDAC, ALAC, Vorbis, apt-X HD | |
|---|---|---|---|
| Supported Digital Video Standards | - | MPEG-4, MPEG-2, H.264, H.263, HEVC, VP9, HEIF, HEIC | |
| Sound Enhancements | - | Dirac sound technologies |
| FEATURES | Realme C21 | OnePlus Nord 2 5G |
|---|
| 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, proximity sensor, magnetometer, light sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, SAR sensor, sensor core | |
| Security Devices | Fingerprint reader | Fingerprint reader (under display) | |
| Additional Phone Features | Super power saving mode, HyperEngine technology, Reverse charging | Noise Cancellation Technology, MIMO technology, dual stereo speakers |
| OTHERS | Realme C21 | OnePlus Nord 2 5G |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | Protective cover, SIM card removal tool, screen protector (pre-applied), Warp Charge 65 power adapter, Warp Type-C cable | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland | - |
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