In depth comparison and review of Samsung Galaxy S8 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 | Samsung Galaxy S8 | Realme C21 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-G950FD | - | |
| Form Factor | Touch | Touch | |
| Height | 148.9 mm | 165.2 mm | Realme C21 has greater height than Samsung Galaxy S8. |
| Width | 68.1 mm | 76.4 mm | Realme C21 has greater width than Samsung Galaxy S8. |
| Depth | 8 mm | 8.9 mm | Samsung Galaxy S8 is narrower than Samsung Galaxy S8. |
| Weight | 155 g | 190 g | Samsung Galaxy S8 is lighter than Samsung Galaxy S8. |
| Body Colour | Gold maple | Midnight black | Cross black | Cross blue | |
| Protection | Dustproof, splashproof, waterproof | - | |
| Waterproof (Water-resistant) | Yes | - | Samsung Galaxy S8 is waterproof. |
| IP rating | IP68 | - | |
| SAR Value | 1.55 W/kg (simultaneous), 0.75 W/kg (body), 0.44 W/kg (head) | - | |
| Integrated Components | Heart rate sensor | - | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
Micro-USB Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | Samsung Galaxy S8 | Realme C21 |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | Quad HD+ Super AMOLED | LCD | |
| Screen Size (Display Size) | 5.8" | 6.5" | Realme C21 has larger screen size than Samsung Galaxy S8. |
| Screen Resolution (Display Resolution) | 2960 x 1440 pixels | 1600 x 720 pixels | Samsung Galaxy S8 has better screen resolution than Realme C21. |
| Display Format | - | HD+ | |
| Pixel Density | 570 ppi | - | |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | - | 420 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Display Features | Always-on display | Mini-drop display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | - |
| PROCESSOR | Samsung Galaxy S8 | Realme C21 |
|---|
| Processor Type (CPU) | Samsung Exynos | MediaTek Helio G35 | |
|---|---|---|---|
| Processor Number | 8895 | - | |
| Clock Speed | 2.3 GHz | 2.3 GHz | Both phones have the same clock speed. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | Samsung Galaxy S8 has 64-bit architecture. |
| Graphics System (GPU) | Mali-G71 MP20 | PowerVR GE8320 |
| MEMORY | Samsung Galaxy S8 | Realme C21 |
|---|
| RAM | LPDDR4 SDRAM - 4 GB | LPDDR4X SDRAM - 3 GB | Samsung Galaxy S8 has more RAM than Realme C21. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 32 GB | Samsung Galaxy S8 has more internal memory than Realme C21. |
| User Memory | 52.3 GB | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSD |
| CAMERA | Samsung Galaxy S8 | Realme C21 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 3 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 13 Megapixel | Realme C21 has better camera resolution than Samsung Galaxy S8. |
| Sensor Size | 1/2.55" | - | |
| Lens Aperture | F/1.7 | F/2.2 | Samsung Galaxy S8 has better lens aperture than Samsung Galaxy S8. |
| Lens Construction | - | 5-element | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy S8 has optical stabilisation. |
| Focus Adjustment | Automatic, manual | Automatic | |
| Digital Zoom | 8x | 4x | Samsung Galaxy S8 has better digital zoom than Realme C21. |
| Self-Timer Delay | Yes | - | |
| Special Effects | Motion effect, HDR, Stamp, Bokeh effect, Grid Line, Stickers | HDR | |
| Camera Modes | Panorama, Slow motion mode, Pro mode, Timer mode, Virtual Shot, HYPERLAPSE, Food mode | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape | |
| Face Recognition (Face ID) | Face detection | - | Samsung Galaxy S8 has face detection. |
| White Balance | Custom, automatic | - | |
| Light Source | Dual LED flash | LED flash | |
| 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 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Selective Focus, Quick Launch, Playback zoom, Dual Pixel technology, Motion photo, Exposure, Shutter speed, geotagging, RAW image capture, VDIS (Video Digital Image Stabilisation) | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (2nd Camera) | - | F/2.4 | |
| Lens Element Qty (2nd Camera) | - | 3-element | |
| Camera Functions (2nd Camera) | - | B&W lens |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Lens Element Qty (3rd Camera) | - | 3-element | |
| Camera Functions (3rd Camera) | - | Macro camera | |
| Camera Features (3rd Camera) | - | 4cm macro photography |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 5 Megapixel | Samsung Galaxy S8 has better front camera resolution than Realme C21. |
| Sensor Size (Front) | 1/3.6" | - | |
| Sensor Type (Front) | CMOS | - | |
| Lens Aperture (Front) | F/1.7 | F/2.2 | Samsung Galaxy S8 has better front lens aperture than Samsung Galaxy S8. |
| Lens Element Qty (Front) | - | 3-element | |
| Focus Adjustment | Automatic | - | |
| Special Effects (Front) | - | HDR | |
| Camera Modes (Front) | Slow motion video, Virtual Shot | 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 | Samsung Galaxy S8 | Realme C21 |
|---|
| Battery Capacity (Battery Size) | 3000 mAh | 5000 mAh | Realme C21 has larger battery capacity than Samsung Galaxy S8. |
|---|---|---|---|
| Wireless Charging | Yes | - | Samsung Galaxy S8 can be charged wirelessly. |
| Wireless Charging Standards | WPC, PMA | - | |
| Standby Time | 81.12 hours | - | |
| Talk Time | 1200 minutes | - | |
| Run Time Details | Talk (WCDMA): up to 1200 min Active online usage (Wi-Fi): up to 14 hrs Active online usage (3G): up to 11 hrs Active online usage (LTE): up to 12 hrs Playback (audio (Always On Display Off)): up to 67 hrs Playback (audio (Always On Display On)): up to 44 hrs Playback (video): up to 16 hrs |
- |
| CELLULAR | Samsung Galaxy S8 | Realme C21 |
|---|
| Technology | TD-SCDMA / WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 7.0 Nougat | Android 10 | |
| User Interface | - | Realme UI | |
| Intelligent Assistant | Bixby | - | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | Samsung Galaxy S8 | Realme C21 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | 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 13, Band 17, Band 18, Band 19, Band 20, Band 25, 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 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, 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 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac, ANT+/ANT | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 5.0 LE | Bluetooth 5.0 | |
| Bluetooth Profiles | HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, SAP, PBAP, MAP, HOGP | - | |
| NFC | Yes | - | Samsung Galaxy S8 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | Samsung Galaxy S8 | Realme C21 |
|---|
| Supported Digital Audio Standards | WAV, WMA, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, apt-X, DSF, DSD, MXMF, OGA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID | - | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 | - |
| FEATURES | Samsung Galaxy S8 | 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, proximity sensor, barometer, gyro sensor, hall sensor, RGB sensor, heart rate, pressure sensor, geomagnetic sensor | Accelerometer, proximity sensor, magnetometer, light sensor | |
| Security Devices | Fingerprint reader, eye scan | Fingerprint reader | |
| Additional Phone Features | Face Unlock, Wi-Fi Miracast, MU-MIMO technology, Fast Charging, Samsung KNOX | Super power saving mode, HyperEngine technology, Reverse charging |
| OTHERS | Samsung Galaxy S8 | Realme C21 |
|---|
| Included Accessories | Stereo headset, USB cable, power adapter, SIM card removal tool, micro-USB connector, 2 pair ear plugs, USB-C to Micro-USB Adapter | USB cable, power adapter, SIM card removal tool | |
|---|---|---|---|
| Compliant Standards | IP68 | TUV Rheinland | |
| Max Depth of Water Resistance | 1.5 m | - |
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