Detailed comparison and review of Samsung Galaxy S21 FE 5G and Realme C31. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-G990B/DS | RMX3501 | |
| Form Factor | Touch | Touch | |
| Height | 155.7 mm | 164.7 mm | Realme C31 has greater height than Samsung Galaxy S21 FE 5G. |
| Width | 74.5 mm | 76.1 mm | Realme C31 has greater width than Samsung Galaxy S21 FE 5G. |
| Depth | 7.9 mm | 8.4 mm | Samsung Galaxy S21 FE 5G is narrower than Samsung Galaxy S21 FE 5G. |
| Weight | 177 g | 197 g | Samsung Galaxy S21 FE 5G is lighter than Samsung Galaxy S21 FE 5G. |
| Body Colour | Olive | Graphite | White | Lavender | Light silver | Dark green | |
| 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) | 1.147 W/kg (body), 0.957 W/kg (head), 2.663 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| Display Type | OLED display | - | |
|---|---|---|---|
| Display Technology | Infinity-O Dynamic AMOLED 2X | - | |
| Screen Size (Display Size) | 6.4" | 6.5" | Realme C31 has larger screen size than Samsung Galaxy S21 FE 5G. |
| Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 1600 x 720 pixels | Samsung Galaxy S21 FE 5G has better screen resolution than Realme C31. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 401 ppi | - | |
| Aspect Ratio | - | 20:9 | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| HDR Technology | HDR10+ | - | |
| Display Enhancement Technology | Eye Comfort Shield | - | |
| Display Refresh Rate | 120 Hz | 60 Hz | Samsung Galaxy S21 FE 5G has better refresh rate than Realme C31. |
| Touch Sampling Rate | - | 120 Hz | |
| Display Features | AOD(Always On Display), Infinity O display, Video Wallpaper | Ultra-clear View | |
| Display Protection (Screen Protector) | Corning Gorilla Glass Victus (scratch resistant glass) | - |
| PROCESSOR | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| Processor Type (CPU) | - | Unisoc | |
|---|---|---|---|
| Processor Number | - | T612 | |
| Clock Speed | 2.84 GHz | 1.82 GHz | Samsung Galaxy S21 FE 5G has higher clock speed than Realme C31. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | - | ARM Mali-G57 |
| MEMORY | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| RAM | 6 GB | LPDDR4X SDRAM - 4 GB + up to 7 GB virtual extension | Samsung Galaxy S21 FE 5G has more RAM than Realme C31. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 64 GB | Samsung Galaxy S21 FE 5G has more internal memory than Realme C31. |
| User Memory | 101.1 GB | - | |
| Memory Interface | - | UFS 2.2 | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 3 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 13 Megapixel | Realme C31 has better camera resolution than Samsung Galaxy S21 FE 5G. |
| Sensor Size | 1/1.76" | - | |
| Lens Type | Wide-angle lens | - | |
| Lens Aperture | F/1.8 | F/2.2 | Samsung Galaxy S21 FE 5G has better lens aperture than Samsung Galaxy S21 FE 5G. |
| 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 | 30x | - | |
| Special Effects | Face retouch, Grid Line | HDR | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Night mode, portrait mode | Burst mode, Panorama, Time-lapse mode, Pro mode, Portrait, Filter mode, Macro mode, Night Pro | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 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 | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 854 x 480 (480p) at 30 fps | |
| Camera Features (Functions) | Dual recording | AI Triple camera |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 2 Megapixel | Samsung Galaxy S21 FE 5G has better second camera resolution than Realme C31. |
|---|---|---|---|
| Lens Type (2nd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.4 | Samsung Galaxy S21 FE 5G has better second camera lens aperture than Samsung Galaxy S21 FE 5G. |
| Field of View (2nd Camera) | 123 degree(s) | - | |
| Pixel Size (2nd Camera) | 1.12 μm | - | |
| Camera Functions (2nd Camera) | - | Macro camera | |
| Camera Features (2nd Camera) | - | 4cm macro photography |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 8 Megapixel | 0.3 Megapixel | Samsung Galaxy S21 FE 5G has higher resolution third camera than Realme C31. |
|---|---|---|---|
| Lens Type (3rd Camera) | Telephoto lens | - | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.8 | Samsung Galaxy S21 FE 5G has better third camera lens aperture than Samsung Galaxy S21 FE 5G. |
| Field of View (3rd Camera) | 32 degree(s) | - | |
| Pixel Size (3rd Camera) | 1 μm | - | |
| Camera Functions (3rd Camera) | - | B&W lens | |
| Camera Features (3rd Camera) | Space Zoom x30 | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 32 Megapixel | 5 Megapixel | Samsung Galaxy S21 FE 5G has better front camera resolution than Realme C31. |
| 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) | - | Beauty mode, Filter mode | |
| Video Resolutions (Front) | - | 1280 x 720 (720p) at 30 fps, 854 x 480 (480p) at 30 fps | |
| Camera Features (Front) | - | AI Selfie |
| BATTERY AND CHARGING | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| Battery Capacity (Battery Size) | 4500 mAh | 5000 mAh | Realme C31 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 | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 4G | Samsung Galaxy S21 FE 5G has more advanced generation mobile network. |
| Operating System | Android 12 | Android 11 | |
| User Interface | - | Realme UI (R Edition) | |
| Intelligent Assistant | Bixby | - | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, A-GPS, BeiDou, Galileo |
| COMMUNICATIONS | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| Data Transmission | FDD-LTE, TDD-LTE, 5G NR FR1 | GPRS, EDGE, HSPA+, 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 8 | Band 1, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 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 20, Band 26, Band 28, Band 32, Band 38, 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 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, 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, 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 802.11a/b/g/n/ac | Wi-Fi | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| NFC | Yes | - | Samsung Galaxy S21 FE 5G has NFC reader for mobile payments. |
| MEDIA | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| 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 | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| Sensors | Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor, light sensor | Accelerometer, proximity sensor, magnetometer, gyro sensor, light sensor | |
|---|---|---|---|
| Security Devices | Fingerprint reader | Fingerprint reader (side) | |
| Additional Phone Features | MIMO technology, Fast Charging, Samsung KNOX, Samsung DeX support, Samsung Smart Switch, Game mode | MIMO technology, Ultra Power Saving Mode, Fast Charging |
| OTHERS | Samsung Galaxy S21 FE 5G | Realme C31 |
|---|
| Included Accessories | SIM card removal tool, USB-C cable | SIM card removal tool, 10W charger, micro-USB cable | |
|---|---|---|---|
| Compliant Standards | IP68 | TUV Rheinland | |
| Max Depth of Water Resistance | 1.5 m | - |
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