In depth comparison and review of Realme C21 and Samsung Galaxy S21 FE 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 | Samsung Galaxy S21 FE 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | SM-G990B/DS | |
| Form Factor | Touch | Touch | |
| Height | 165.2 mm | 155.7 mm | Realme C21 has greater height than Samsung Galaxy S21 FE 5G. |
| Width | 76.4 mm | 74.5 mm | Realme C21 has greater width than Samsung Galaxy S21 FE 5G. |
| Depth | 8.9 mm | 7.9 mm | Samsung Galaxy S21 FE 5G is narrower than Realme C21. |
| Weight | 190 g | 177 g | Samsung Galaxy S21 FE 5G is lighter than Realme C21. |
| Body Colour | Cross black | Cross blue | Olive | Graphite | White | Lavender | |
| Protection | - | Dustproof, splashproof, water-resistant | |
| Waterproof (Water-resistant) | - | - | |
| IP rating | - | IP68 | |
| SAR Value | - | 1.48 W/kg (body), 0.952 W/kg (head), 2.91 W/kg (limb) | |
| 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 | Samsung Galaxy S21 FE 5G |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | LCD | Infinity-O Dynamic AMOLED 2X | |
| Screen Size (Display Size) | 6.5" | 6.4" | Realme C21 has larger screen size than Samsung Galaxy S21 FE 5G. |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 2340 x 1080 pixels | Samsung Galaxy S21 FE 5G has better screen resolution than Realme C21. |
| Display Format | HD+ | Full HD+ | |
| Pixel Density | - | 401 ppi | |
| Aspect Ratio | 20:9 | - | |
| Max Brightness | 420 cd/m² | - | |
| Colour Depth | - | 16.7 million colours | |
| HDR Technology | - | HDR10+ | |
| Display Enhancement Technology | - | Eye Comfort Shield | |
| Display Refresh Rate | - | 120 Hz | |
| Display Features | Mini-drop display | AOD(Always On Display), Infinity O display, Video Wallpaper | |
| Display Protection (Screen Protector) | - | Corning Gorilla Glass Victus (scratch resistant glass) |
| PROCESSOR | Realme C21 | Samsung Galaxy S21 FE 5G |
|---|
| Processor Type (CPU) | MediaTek Helio G35 | - | |
|---|---|---|---|
| Clock Speed | 2.3 GHz | 2.84 GHz | Samsung Galaxy S21 FE 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 | - |
| MEMORY | Realme C21 | Samsung Galaxy S21 FE 5G |
|---|
| RAM | LPDDR4X SDRAM - 3 GB | 6 GB | Samsung Galaxy S21 FE 5G has more RAM than Realme C21. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 128 GB | Samsung Galaxy S21 FE 5G has more internal memory than Realme C21. |
| User Memory | - | 101.1 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSD | - |
| CAMERA | Realme C21 | Samsung Galaxy S21 FE 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 3 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 12 Megapixel | Realme C21 has better camera resolution than Samsung Galaxy S21 FE 5G. |
| Sensor Size | - | 1/1.76" | |
| Lens Type | - | Wide-angle lens | |
| Lens Aperture | F/2.2 | F/1.8 | Samsung Galaxy S21 FE 5G has better lens aperture than Realme C21. |
| Lens Construction | 5-element | - | |
| Field of View (FoV) | - | 79 degree(s) | |
| Pixel Size | - | 1.8 μm | |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Samsung Galaxy S21 FE 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Optical Zoom | - | 3x | |
| Digital Zoom | 4x | 30x | Samsung Galaxy S21 FE 5G has better digital zoom than Realme C21. |
| Special Effects | HDR | Face retouch, Grid Line | |
| HDR Mode | - | Auto HDR mode | |
| Camera Modes | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape | Night mode, portrait mode | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 60 fps, Slo-mo video 1280 x 720 (720p) at 960 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost | Dual recording |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 2 Megapixel | 12 Megapixel | Samsung Galaxy S21 FE 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/2.2 | Samsung Galaxy S21 FE 5G has better second camera lens aperture than Realme C21. |
| Lens Element Qty (2nd Camera) | 3-element | - | |
| Field of View (2nd Camera) | - | 123 degree(s) | |
| Pixel Size (2nd Camera) | - | 1.12 μm | |
| Camera Functions (2nd Camera) | B&W lens | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | 8 Megapixel | Samsung Galaxy S21 FE 5G has higher resolution third camera than Realme C21. |
|---|---|---|---|
| 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) | 3-element | - | |
| Field of View (3rd Camera) | - | 32 degree(s) | |
| Pixel Size (3rd Camera) | - | 1 μm | |
| Camera Functions (3rd Camera) | Macro camera | - | |
| Camera Features (3rd Camera) | 4cm macro photography | Space Zoom x30 |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 32 Megapixel | Samsung Galaxy S21 FE 5G has better front camera resolution than Realme C21. |
| Lens Aperture (Front) | F/2.2 | F/2.2 | Both phones have the same front camera lens aperture. |
| Lens Element Qty (Front) | 3-element | - | |
| Field of View (Front) | - | 81 degree(s) | |
| 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 | - | |
| Face Recognition (Face ID) | Face recognition | - | Realme C21 has face detection. |
| BATTERY AND CHARGING | Realme C21 | Samsung Galaxy S21 FE 5G |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | 4500 mAh | Realme C21 has larger battery capacity than Samsung Galaxy S21 FE 5G. |
|---|---|---|---|
| Fast Charging Technology | - | Samsung Fast Charging | Samsung Galaxy S21 FE 5G has fast charging technology. |
| Wireless Charging | - | Yes | Samsung Galaxy S21 FE 5G can be charged wirelessly. |
| Wireless Charging Standards | - | Wireless PowerShare | |
| Talk Time | - | 2220 minutes | |
| Run Time Details | - | Talk (LTE): up to 2220 min Active online usage (LTE): up to 13 hrs Active online usage (Wi-Fi): up to 13 hrs Playback (video): up to 16 hrs Playback (audio): up to 79 hrs |
| CELLULAR | Realme C21 | Samsung Galaxy S21 FE 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Samsung Galaxy S21 FE 5G has more advanced generation mobile network. |
| Operating System | Android 10 | Android 12 | |
| User Interface | Realme UI | - | |
| Intelligent Assistant | - | Bixby | |
| Payment Technology | - | Samsung Pay | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | Realme C21 | Samsung Galaxy S21 FE 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 | |
| 3G UMTS Frequency | 2100, 850, 900 | 2100, 1900, 1700, 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 12, Band 17, Band 20, Band 26, Band 28, Band 32, Band 38, 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 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | - | N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, 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 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| NFC | - | Yes | Samsung Galaxy S21 FE 5G has NFC reader for mobile payments. |
| MEDIA | Realme C21 | Samsung Galaxy S21 FE 5G |
|---|
| Supported Digital Audio Standards | - | WAV, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID | |
|---|---|---|---|
| Supported Digital Video Standards | - | MKV, FLV, AVI, 3GP, M4V, WebM, 3G2, MP4 | |
| Sound Enhancements | - | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound |
| FEATURES | Realme C21 | Samsung Galaxy S21 FE 5G |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, proximity sensor, magnetometer, light sensor | Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor, light sensor | |
| Security Devices | Fingerprint reader | Fingerprint reader | |
| Additional Phone Features | Super power saving mode, HyperEngine technology, Reverse charging | MIMO technology, Fast Charging, Samsung KNOX, Samsung DeX support, Samsung Smart Switch, Game mode |
| OTHERS | Realme C21 | Samsung Galaxy S21 FE 5G |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland | IP68 | |
| Max Depth of Water Resistance | - | 1.5 m |
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