In depth comparison and review of Samsung Galaxy S21 5G and OPPO A54S. 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 S21 5G | OPPO A54S |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-G991U1 | CPH2273 | |
| Form Factor | Touch | Touch | |
| Height | 151.7 mm | 163.8 mm | OPPO A54S has greater height than Samsung Galaxy S21 5G. |
| Width | 71.2 mm | 75.6 mm | OPPO A54S has greater width than Samsung Galaxy S21 5G. |
| Depth | 7.9 mm | 8.4 mm | Samsung Galaxy S21 5G is narrower than Samsung Galaxy S21 5G. |
| Weight | 171 g | 190 g | Samsung Galaxy S21 5G is lighter than Samsung Galaxy S21 5G. |
| Body Colour | Phantom grey | Phantom white | Crystal black | |
| Protection | Dustproof, splashproof, water-resistant | - | |
| Waterproof (Water-resistant) | Yes | - | Samsung Galaxy S21 5G is waterproof. |
| IP rating | IP68 | - | |
| SAR Value | 1.58 W/kg (simultaneous), 1.11 W/kg (wireless router), 1.08 W/kg (body), 0.74 W/kg (head) | - | |
| Connector Type | USB Type-C - 24 pin USB-C | Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
|
| SIM Card Type (Size) | Nano SIM, Electronic SIM card (e-SIM) | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy S21 5G | OPPO A54S |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | Infinity-O Dynamic AMOLED 2X | - | |
| Screen Size (Display Size) | 6.2" | 6.52" | OPPO A54S has larger screen size than Samsung Galaxy S21 5G. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 1600 x 720 pixels | Samsung Galaxy S21 5G has better screen resolution than OPPO A54S. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 421 ppi | 269 ppi | Samsung Galaxy S21 5G has better pixel density than OPPO A54S. |
| Max Brightness | - | 480 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | - | 1500:1 | |
| HDR | Yes | - | Samsung Galaxy S21 5G has HDR. |
| HDR Technology | HDR10+ | - | |
| Display Enhancement Technology | Eye Comfort Shield | - | |
| Display Refresh Rate | 120 Hz | 60 Hz | Samsung Galaxy S21 5G has better refresh rate than OPPO A54S. |
| Display Features | AOD(Always On Display), Video Wallpaper | 71% NTSC, AI Eye-Care | |
| Display Protection (Screen Protector) | Corning Gorilla Glass Victus (scratch resistant glass) | PDMA+PC |
| PROCESSOR | Samsung Galaxy S21 5G | OPPO A54S |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 888 | MediaTek Helio G35 | |
|---|---|---|---|
| Clock Speed | 2.84 GHz | 2.3 GHz | Samsung Galaxy S21 5G has higher clock speed than OPPO A54S. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | - | IMG GE8320 |
| MEMORY | Samsung Galaxy S21 5G | OPPO A54S |
|---|
| RAM | LPDDR5 SDRAM - 8 GB | LPDDR4X SDRAM - 4 GB | Samsung Galaxy S21 5G has more RAM than OPPO A54S. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
| User Memory | 101.2 GB | - | |
| Memory Interface | - | eMMC 5.1 |
| CAMERA | Samsung Galaxy S21 5G | OPPO A54S |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 3 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 50 Megapixel | OPPO A54S has better camera resolution than Samsung Galaxy S21 5G. |
| Sensor Size | 1/1.76" | - | |
| Lens Type | Wide-angle lens | - | |
| Lens Aperture | F/1.8 | F/2.2 | Samsung Galaxy S21 5G has better lens aperture than Samsung Galaxy S21 5G. |
| Lens Construction | - | 5-element | |
| Field of View (FoV) | 79 degree(s) | 80 degree(s) | OPPO A54S has larger lens field of view than Samsung Galaxy S21 5G. |
| Pixel Size | 1.8 μm | - | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy S21 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Optical Zoom | 3x | - | |
| Digital Zoom | 30x | - | |
| Self-Timer Delay | Yes | - | |
| Special Effects | Face retouch, Grid Line | - | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Portrait, Night, Motion Photo, Mountain, Single Take, Pro Video, Portrait video, Director's View | - | |
| Light Source | High CRI LED flash | LED flash | |
| Still Image Resolutions | - | 4160 x 2340, 3120 x 3120, 4160 x 1872, 4080 x 3072 | |
| Video Resolutions | 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 7680 x 4320 (8K) at 24 fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | Playback zoom, Motion photo, blink detection, QR-code scanner, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Scene Optimiser, Lens smudge, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, Super Speed Dual Pixel AF, Quick Measure, Zoom-In Mic, HEIF image capture, Space Zoom, Take 33MP still photos while playing 8K video, Hybrid Optic Zoom 3x, Super Resolution Zoom up to 30x, Digital zoom up to 12x for video, AR Doodle, HEVC (High Efficiency Video coding) support, Microphone Control (Pro Video only) | AI Triple camera |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 2 Megapixel | Samsung Galaxy S21 5G has better second camera resolution than OPPO A54S. |
|---|---|---|---|
| Lens Type (2nd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.4 | Samsung Galaxy S21 5G has better second camera lens aperture than Samsung Galaxy S21 5G. |
| Lens Element Qty (2nd Camera) | - | 3-element | |
| Field of View (2nd Camera) | 120 degree(s) | 88.8 degree(s) | Samsung Galaxy S21 5G has larger second camera lens field of view than OPPO A54S. |
| Pixel Size (2nd Camera) | 1.4 μm | - | |
| Camera Functions (2nd Camera) | - | Depth camera |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 64 Megapixel | 2 Megapixel | Samsung Galaxy S21 5G has higher resolution third camera than OPPO A54S. |
|---|---|---|---|
| Sensor Size (3rd Camera) | 1/1.72" | - | |
| Lens Type (3rd Camera) | Telephoto lens | - | |
| Lens Aperture (3rd Camera) | F/2.0 | F/2.4 | Samsung Galaxy S21 5G has better third camera lens aperture than Samsung Galaxy S21 5G. |
| Lens Element Qty (3rd Camera) | - | 3-element | |
| Field of View (3rd Camera) | 76 degree(s) | 88.8 degree(s) | OPPO A54S has larger third camera lens field of view than Samsung Galaxy S21 5G. |
| Pixel Size (3rd Camera) | 0.8 μm | - | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy S21 5G has optical stabilisation of the third camera. |
| Camera Functions (3rd Camera) | - | Macro camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 10 Megapixel | 8 Megapixel | Samsung Galaxy S21 5G has better front camera resolution than OPPO A54S. |
| Lens Aperture (Front) | F/2.2 | F/2.0 | OPPO A54S has better front lens aperture than Samsung Galaxy S21 5G. |
| Lens Element Qty (Front) | - | 5-element | |
| Field of View (Front) | 80 degree(s) | 79 degree(s) | Samsung Galaxy S21 5G has larger front lens field of view than OPPO A54S. |
| Pixel Size (Front) | 1.22 μm | - | |
| Focus Adjustment | Automatic | - | |
| Special Effects (Front) | - | Bokeh effect | |
| Camera Modes (Front) | - | Dazzle Colour Mode | |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Front) | Dual Pixel AF | AI beautification |
| BATTERY AND CHARGING | Samsung Galaxy S21 5G | OPPO A54S |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 5000 mAh | OPPO A54S has larger battery capacity than Samsung Galaxy S21 5G. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Power Delivery 3.0 | - | Samsung Galaxy S21 5G has fast charging technology. |
| Wireless Charging | Yes | - | Samsung Galaxy S21 5G can be charged wirelessly. |
| Wireless Charging Standards | WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare | - | |
| Talk Time | 1800 minutes | - | |
| Run Time Details | Talk (LTE): up to 1800 min Active online usage (LTE): up to 14 hrs Active online usage (Wi-Fi): up to 15 hrs Playback (wireless video): up to 19 hrs Playback (wireless audio): up to 72 hrs |
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| CELLULAR | Samsung Galaxy S21 5G | OPPO A54S |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 4G | Samsung Galaxy S21 5G has more advanced generation mobile network. |
| Operating System | Android 11 | ColorOS 11.1 (based on Android 11) | |
| Intelligent Assistant | Bixby | - | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, GLONASS, Galileo | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | Samsung Galaxy S21 5G | OPPO A54S |
|---|
| Data Transmission | FDD-LTE, TDD-LTE, 5G NR FR1, 5G NR FR2 | FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 CDMA2000 1X | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 6, Band 8, Band 19 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 1700, 850, 800, 900, 800 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 14, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 30, Band 38, Band 39, Band 40, Band 41, Band 46, Band 48, Band 66, Band 71 | 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 38, Band 39, Band 40, Band 41, Band 66 | |
| 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 700 PS, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 2300 WCS, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 5150, TDD 3600, FDD 1700 - 2110 AWS-3, FDD 600 | 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, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | N41, n71, n260, n261 | - | |
| 5G NR Frequency | TDD TD 2500, FDD 600, TDD 39GHz, TDD 28GHz | - | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac/ax | Wi-Fi | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| MEDIA | Samsung Galaxy S21 5G | OPPO A54S |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 | AAC, apt-X, LDAC, SBC | |
|---|---|---|---|
| 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 5G | OPPO A54S |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor | Accelerometer, ambient light sensor, proximity sensor, pedometer, geomagnetic sensor, gravity sensor | |
| Security Devices | Fingerprint reader (under display), face recognition | Face recognition, fingerprint reader (side) | |
| Security Technology | - | Face Unlock | |
| Additional Phone Features | MIMO technology, Screen Write, notification flashlight, Smart Select, Fast Charging, Samsung KNOX, Smart View, Live message, Screen off memo, Samsung DeX support, Bixby Vision, TalkBack, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, Bixby key, Bluetooth Scalable Codec, Samsung Knox Vault, Private Share function, Enhanced Game Booster, Air Command | Super power saving mode, Game Assistant, super nighttime standby mode, optimised night charge, charging temperature control |
| OTHERS | Samsung Galaxy S21 5G | OPPO A54S |
|---|
| Included Accessories | SIM card removal tool, USB-C to USB-C cable | Headset, power adapter, SIM card removal tool, USB-C cable, protective case | |
|---|---|---|---|
| Compliant Standards | VDE, IP68, HAC (Hearing Aid Compatible), SGS Eye Care Display Certification | - | |
| Max Depth of Water Resistance | 1.5 m | - |
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