In depth comparison and review of OPPO Find X3 Neo and Realme C21. 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 | OPPO Find X3 Neo | Realme C21 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | CPH2207 | - | |
| Form Factor | Touch | Touch | |
| Height | 159.9 mm | 165.2 mm | Realme C21 has greater height than OPPO Find X3 Neo. |
| Width | 72.5 mm | 76.4 mm | Realme C21 has greater width than OPPO Find X3 Neo. |
| Depth | 7.99 mm | 8.9 mm | OPPO Find X3 Neo is narrower than OPPO Find X3 Neo. |
| Weight | 184 g | 190 g | OPPO Find X3 Neo is lighter than OPPO Find X3 Neo. |
| Body Colour | Galactic silver | Cross black | Cross blue | |
| Body Material | Aluminium alloy, Panda Glass with sandblasted coating | - | |
| Waterproof (Water-resistant) | - | - | |
| IP rating | IPX4 | - | |
| SAR Value | 0.991 W/kg (head), 1.289 W/kg (body), 2.589 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 Find X3 Neo | Realme C21 |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | AMOLED | LCD | |
| Screen Size (Display Size) | 6.55" | 6.5" | OPPO Find X3 Neo has larger screen size than Realme C21. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 1600 x 720 pixels | OPPO Find X3 Neo has better screen resolution than Realme C21. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 402 ppi | - | |
| Aspect Ratio | 20:9 | 20:9 | |
| Max Brightness | 1100 cd/m² | 420 cd/m² | OPPO Find X3 Neo has better display brightness than Realme C21. |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | 5000000:1 | - | |
| HDR | Yes | - | OPPO Find X3 Neo has HDR. |
| HDR Technology | HDR10+ | - | |
| Display Refresh Rate | 90 Hz | - | |
| Display Features | Night mode, DCI-P3 Wide colour gamut, AOD(Always On Display), Dark mode, Anti-flicker display, 180Hz sampling rate | Mini-drop display | |
| Display Protection (Screen Protector) | Fingerprint-resistant coating | - |
| PROCESSOR | OPPO Find X3 Neo | Realme C21 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 865 5G | MediaTek Helio G35 | |
|---|---|---|---|
| Clock Speed | 2.8 GHz | 2.3 GHz | OPPO Find X3 Neo 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 650 | PowerVR GE8320 |
| MEMORY | OPPO Find X3 Neo | Realme C21 |
|---|
| RAM | LPDDR4X SDRAM - 12 GB | LPDDR4X SDRAM - 3 GB | OPPO Find X3 Neo has more RAM than Realme C21. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 256 GB | 32 GB | OPPO Find X3 Neo has more internal memory than Realme C21. |
| Memory Interface | UFS 3.1 | - | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSD |
| CAMERA | OPPO Find X3 Neo | Realme C21 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 3 | |
|---|---|---|---|
| Sensor Resolution | 50 Megapixel | 13 Megapixel | OPPO Find X3 Neo has better camera resolution than Realme C21. |
| Sensor Size | 1/1.56" | - | |
| Sensor Name | Sony Exmor RS IMX766 sensor | - | |
| Lens Aperture | F/1.8 | F/2.2 | OPPO Find X3 Neo has better lens aperture than OPPO Find X3 Neo. |
| Lens Construction | 6-element | 5-element | |
| Field of View (FoV) | 84 degree(s) | - | |
| Pixel Size | 1 μm | - | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | OPPO Find X3 Neo has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | 24 mm | - | |
| Digital Zoom | - | 4x | |
| Special Effects | HDR, Live HDR, Bokeh effect, Stickers | HDR | |
| Camera Modes | Burst mode, Panorama, Time-lapse mode, Slow motion mode, night mode, Expert Mode, portrait mode, AI Beauty, Text, Filter mode, Macro mode, Night portrait mode, Dual-View Video, Ultra Night Video, Night Flare Portrait, AI Highlight Video | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape | |
| Light Source | Dual LED flash | LED flash | |
| Still Image Resolutions | 4096 x 3072, 4096 x 2304, 3072 x 3072, 8192 x 6144, 4096 x 1840 | - | |
| 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, 3840 x 2160 (4K) at 60 fps | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Tracking Focus, Electronic Image Stabiliser (EIS), AI Quad camera, omnidirectional autofocus, 2x2 On-Chip Lens (OCL), (DOL-HDR) Digital Overlap High Dynamic Range, AI Scene Enhancement | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 16 Megapixel | 2 Megapixel | OPPO Find X3 Neo has better second camera resolution than Realme C21. |
|---|---|---|---|
| Sensor Size (2nd Camera) | 1/3.09" | - | |
| Sensor Name (2nd Camera) | Sony Exmor RX IMX481 sensor | - | |
| Lens Type (2nd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.4 | OPPO Find X3 Neo has better second camera lens aperture than OPPO Find X3 Neo. |
| Lens Element Qty (2nd Camera) | 5-element | 3-element | |
| Field of View (2nd Camera) | 123 degree(s) | - | |
| Pixel Size (2nd Camera) | 1 μm | - | |
| Minimum Focal Length (2nd Camera) | 14 mm | - | |
| Camera Functions (2nd Camera) | - | B&W lens | |
| Camera Features (2nd Camera) | Electronic Image Stabiliser (EIS) | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 13 Megapixel | 2 Megapixel | OPPO Find X3 Neo has higher resolution third camera than Realme C21. |
|---|---|---|---|
| Sensor Size (3rd Camera) | 1/3.4" | - | |
| Sensor Name (3rd Camera) | Samsung S5K3M5 | - | |
| Lens Type (3rd Camera) | 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 | |
| Field of View (3rd Camera) | 45 degree(s) | - | |
| Pixel Size (3rd Camera) | 1 μm | - | |
| Minimum Focal Length (3rd Camera) | 52 mm | - | |
| Digital Zoom | 20x | - | |
| Hybrid Zoom | 5x | - | |
| Camera Functions (3rd Camera) | - | Macro camera | |
| Camera Features (3rd Camera) | Electronic Image Stabiliser (EIS) | 4cm macro photography |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 2 Megapixel | - | |
|---|---|---|---|
| Sensor Size (4th Camera) | 1/5" | - | |
| Lens Aperture (4th Camera) | F/2.4 | - | |
| Lens Element Qty (4th Camera) | 3-element | - | |
| Field of View (4th Camera) | 89 degree(s) | - | |
| Pixel Size (4th Camera) | 1.75 μm | - | |
| Minimum Focal Length (4th Camera) | 22 mm | - | |
| Camera Functions (4th Camera) | Macro camera | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 32 Megapixel | 5 Megapixel | OPPO Find X3 Neo has better front camera resolution than Realme C21. |
| Sensor Size (Front) | 1/2.74" | - | |
| Sensor Name (Front) | Sony Exmor RS IMX615 sensor | - | |
| Lens Aperture (Front) | F/2.4 | F/2.2 | Realme C21 has better front lens aperture than OPPO Find X3 Neo. |
| Lens Element Qty (Front) | 5-element | 3-element | |
| Field of View (Front) | 80 degree(s) | - | |
| Pixel Size (Front) | 0.8 μm | - | |
| Min Focal Length (Front) | 25 mm | - | |
| Special Effects (Front) | Stickers | HDR | |
| Camera Modes (Front) | Panorama, Time-lapse mode, night mode, 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 | - | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | - | |
| Camera Features (Front) | Electronic Image Stabiliser (EIS) | - |
| BATTERY AND CHARGING | OPPO Find X3 Neo | Realme C21 |
|---|
| Battery Capacity (Battery Size) | 4500 mAh | 5000 mAh | Realme C21 has larger battery capacity than OPPO Find X3 Neo. |
|---|---|---|---|
| Fast Charging Technology | VOOC Flash Charge technology 3.0, SuperVOOC 2.0 Flash Charge | - | OPPO Find X3 Neo has fast charging technology. |
| Recharge Time (Charging Time) | 35 min | - | |
| Standby Time | 278.8 hours | - | |
| Talk Time | 840 minutes | - | |
| Run Time Details | Standby: up to 278.8 hrs Playback (video): up to 15.6 hrs Talk (3G): up to 840 min |
- |
| CELLULAR | OPPO Find X3 Neo | Realme C21 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 4G | OPPO Find X3 Neo has more advanced generation mobile network. |
| Operating System | ColorOS 11.1 (based on Android 11) | Android 10 | |
| User Interface | - | Realme UI | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | OPPO Find X3 Neo | Realme C21 |
|---|
| Data Transmission | VoLTE, FDD-LTE, TDD-LTE, VoWiFi, 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 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, 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, n28, n38, n41, n77, n78, n40 | - | |
| 5G NR Frequency | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, 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/ax | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 5.2 | Bluetooth 5.0 | |
| NFC | Yes | - | OPPO Find X3 Neo has NFC reader for mobile payments. |
| MEDIA | OPPO Find X3 Neo | Realme C21 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), LDAC, MID, SBC, LHDC | - | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, MOV, WMV, ASF, 3GP, H.265, MP4 | - | |
| Sound Enhancements | Dolby Atmos sound technology, Qualcomm aptX audio, Qualcomm TrueWireless Stereo Plus, Qualcomm aptX HD audio | - | |
| Audio Amplifier | Hi-Fi 4377 | - |
| FEATURES | OPPO Find X3 Neo | 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, magnetometer, gyro sensor, gravity sensor, colour temperature sensor | Accelerometer, proximity sensor, magnetometer, light sensor | |
| Security Devices | Fingerprint reader (under display), face recognition | Fingerprint reader | |
| Additional Phone Features | MIMO technology, Gesture Controls, Dual noise reduction microphones, MU-MIMO technology, Haptic vibration motor, dual stereo speakers | Super power saving mode, HyperEngine technology, Reverse charging |
| OTHERS | OPPO Find X3 Neo | Realme C21 |
|---|
| Included Accessories | Headset, protective cover, SIM card removal tool, USB-C cable, protective film, SuperVOOC 65W power adapter | USB cable, power adapter, SIM card removal tool | |
|---|---|---|---|
| Compliant Standards | IPX4 | TUV Rheinland |
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