In depth comparison and review of Realme C21 and Realme X3 Superzoom. 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 | Realme X3 Superzoom |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | - | RMX2086 | |
Form Factor | Touch | Touch | |
Height | 165.2 mm | 163.8 mm | Realme C21 has greater height than Realme X3 Superzoom. |
Width | 76.4 mm | 75.8 mm | Realme C21 has greater width than Realme X3 Superzoom. |
Depth | 8.9 mm | 8.9 mm | Both phones are the same depth. |
Weight | 190 g | 202 g | Realme C21 is lighter than Realme C21. |
Body Colour | Cross black | Cross blue | Glacier blue | |
Waterproof (Water-resistant) | - | - | |
SAR Value | - | 0.931 W/kg (body), 0.897 W/kg (head), 1.914 W/kg (limb) | |
Connector Type | Micro-USB Headset jack - mini-phone 3.5mm |
USB Type-C | |
SIM Card Type (Size) | Nano SIM | Nano SIM | |
SIM Card Qty | Dual-SIM | Dual-SIM |
DISPLAY | Realme C21 | Realme X3 Superzoom |
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Display Type | LCD display | - | |
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Display Technology | LCD | - | |
Screen Size (Display Size) | 6.5" | 6.6" | Realme X3 Superzoom has larger screen size than Realme C21. |
Screen Resolution (Display Resolution) | 1600 x 720 pixels | 2400 x 1080 pixels | Realme X3 Superzoom has better screen resolution than Realme C21. |
Display Format | HD+ | Full HD+ | |
Aspect Ratio | 20:9 | - | |
Max Brightness | 420 cd/m² | - | |
Display Features | Mini-drop display | 120Hz Ultra Smooth Display | |
Display Protection (Screen Protector) | - | Corning Gorilla Glass 5 (scratch resistant glass) |
PROCESSOR | Realme C21 | Realme X3 Superzoom |
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Processor Type (CPU) | MediaTek Helio G35 | Qualcomm Snapdragon 855+ | |
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Clock Speed | 2.3 GHz | 2.96 GHz | Realme X3 Superzoom 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 | Qualcomm ADRENO 640 |
MEMORY | Realme C21 | Realme X3 Superzoom |
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RAM | LPDDR4X SDRAM - 3 GB | LPDDR4X SDRAM - 12 GB | Realme X3 Superzoom has more RAM than Realme C21. |
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Internal Memory Size (Storage Capacity) | 32 GB | 256 GB | Realme X3 Superzoom has more internal memory than Realme C21. |
Memory Interface | - | UFS 3.0 | |
Supported Flash Memory Cards (Expandable Memory) | microSD | - |
CAMERA | Realme C21 | Realme X3 Superzoom |
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MAIN CAMERA |
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Number of Main Cameras | 3 | 4 | |
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Sensor Resolution | 13 Megapixel | 64 Megapixel | Realme X3 Superzoom has better camera resolution than Realme C21. |
Sensor Size | - | 1/1.72" | |
Sensor Name | - | Samsung GW1 Sensor | |
Lens Type | - | Wide-angle lens | |
Lens Aperture | F/2.2 | F/1.8 | Realme X3 Superzoom has better lens aperture than Realme C21. |
Lens Construction | 5-element | 6-element | |
Field of View (FoV) | - | 78.6 degree(s) | |
Focus Adjustment | Automatic | Automatic | |
Minimum Focal Length (Focal Distance) | - | 26 mm | |
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 | Panorama, Time-lapse mode, Slow motion mode, Expert Mode, Portrait, AI mode, Ultra Macro Mode, Super nightscape, Ultra Wide Mode, Starry mode | |
Light Source | LED flash | 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, 3840 x 2160 (4K) at 60 fps | |
Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost | AI Beautify, AI scene recognition, UIS Video Stabilisation, Chroma boost, UIS Max Video stabilisation, 60X Super Zoom |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | 2 Megapixel | 8 Megapixel | Realme X3 Superzoom has better second camera resolution than Realme C21. |
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Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
Lens Aperture (2nd Camera) | F/2.4 | F/2.3 | Realme X3 Superzoom has better second camera lens aperture than Realme C21. |
Lens Element Qty (2nd Camera) | 3-element | 5-element | |
Field of View (2nd Camera) | - | 119 degree(s) | |
Minimum Focal Length (2nd Camera) | - | 16 mm | |
Camera Functions (2nd Camera) | B&W lens | - |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | 2 Megapixel | 8 Megapixel | Realme X3 Superzoom has higher resolution third camera than Realme C21. |
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Lens Type (3rd Camera) | - | Telephoto lens | |
Lens Aperture (3rd Camera) | F/2.4 | F/3.4 | Realme C21 has better third camera lens aperture than Realme C21. |
Lens Element Qty (3rd Camera) | 3-element | - | |
Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Realme X3 Superzoom has optical stabilisation of the third camera. |
Optical Zoom | - | 5x | |
Camera Functions (3rd Camera) | Macro camera | - | |
Camera Features (3rd Camera) | 4cm macro photography | 60x Super Zoom |
FOURTH CAMERA |
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Sensor Resolution (4th Camera) | - | 2 Megapixel | |
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Lens Aperture (4th Camera) | - | F/2.4 | |
Pixel Size (4th Camera) | - | 1.75 μm | |
Camera Functions (4th Camera) | - | Macro camera | |
Camera Features (4th Camera) | - | 4cm macro photography |
FRONT CAMERA |
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Number of Front Cameras | 1 | 2 | |
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Sensor Resolution (Front) | 5 Megapixel | 32 Megapixel | Realme X3 Superzoom has better front camera resolution than Realme C21. |
Sensor Name (Front) | - | Sony Exmor RS IMX616 sensor | |
Lens Aperture (Front) | F/2.2 | F/2.5 | Realme C21 has better front lens aperture than Realme C21. |
Lens Element Qty (Front) | 3-element | 5-element | |
Field of View (Front) | - | 80.4 degree(s) | |
Special Effects (Front) | HDR | Beauty effect | |
Camera Modes (Front) | Time-lapse mode, Beauty mode, portrait mode, AI Beauty, Filter mode, Panoramic mode | Time-lapse mode, front-facing panorama, Portrait, Mirror mode, Super nightscape, Wide | |
Face Recognition (Face ID) | Face recognition | Face recognition | Both phones have face detection. |
Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps |
SECOND FRONT CAMERA |
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Sensor Resolution (2nd Front) | - | 8 Megapixel | |
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Lens Aperture (2nd Front) | - | F/2.2 | |
Field of View (2nd Front) | - | 105 degree(s) | |
Camera Features (2nd Front) | - | 5-piece lens |
BATTERY AND CHARGING | Realme C21 | Realme X3 Superzoom |
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Battery Capacity (Battery Size) | 5000 mAh | 4200 mAh | Realme C21 has larger battery capacity than Realme X3 Superzoom. |
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Fast Charging Technology | - | Dart Charge | Realme X3 Superzoom has fast charging technology. |
CELLULAR | Realme C21 | Realme X3 Superzoom |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
Operating System | Android 10 | Android 10 | |
User Interface | Realme UI | Realme UI | |
Payment Technology | - | Google Pay | |
Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
COMMUNICATIONS | Realme C21 | Realme X3 Superzoom |
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Data Transmission | FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE | |
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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 5, Band 8 | |
3G UMTS Frequency | 2100, 850, 900 | 2100, 850, 900 | |
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 20, Band 28, Band 38, Band 40, Band 41 | |
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 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
NFC | - | Yes | Realme X3 Superzoom has NFC reader for mobile payments. |
MEDIA | Realme C21 | Realme X3 Superzoom |
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Sound Enhancements | - | Dolby Atmos sound technology, Hi-Res audio certified |
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FEATURES | Realme C21 | Realme X3 Superzoom |
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Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
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Sensors | Accelerometer, proximity sensor, magnetometer, light sensor | Accelerometer, ambient light sensor, proximity sensor, magnetometer, gyro sensor | |
Security Devices | Fingerprint reader | Fingerprint reader (side) | |
Additional Phone Features | Super power saving mode, HyperEngine technology, Reverse charging | MIMO technology, dual microphones with noise cancellation, liquid cooling |
OTHERS | Realme C21 | Realme X3 Superzoom |
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Included Accessories | USB cable, power adapter, SIM card removal tool | SIM card removal tool, USB-C cable, protective case, 30W Dart charger | |
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Compliant Standards | TUV Rheinland | - |