In depth comparison and review of Samsung Galaxy S21 5G and CAT S53. 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 | CAT S53 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-G991U1 | - | |
| Form Factor | Touch | Touch - Rugged | |
| Height | 151.7 mm | 171 mm | CAT S53 has greater height than Samsung Galaxy S21 5G. |
| Width | 71.2 mm | 81 mm | CAT S53 has greater width than Samsung Galaxy S21 5G. |
| Depth | 7.9 mm | 16 mm | Samsung Galaxy S21 5G is narrower than Samsung Galaxy S21 5G. |
| Weight | 171 g | 320 g | Samsung Galaxy S21 5G is lighter than Samsung Galaxy S21 5G. |
| Body Colour | Phantom grey | Phantom white | - | |
| Protection | Dustproof, splashproof, water-resistant | Shockproof, dustproof, waterproof, sandproof, dirtproof, drop-proof, vibration-resistant, temperature protection, salt mist protection, bleach resistant | |
| Waterproof (Water-resistant) | Yes | Yes | Both phones are waterproof. |
| IP rating | IP68 | IP68, IP69K, IP69 | |
| SAR Value | 1.58 W/kg (simultaneous), 1.11 W/kg (wireless router), 1.08 W/kg (body), 0.74 W/kg (head) | - | |
| Integrated Components | - | LED flashlight | |
| Connector Type | USB Type-C - 24 pin USB-C | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM, Electronic SIM card (e-SIM) | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | Samsung Galaxy S21 5G | CAT S53 |
|---|
| Display Type | OLED display | - | |
|---|---|---|---|
| Display Technology | Infinity-O Dynamic AMOLED 2X | - | |
| Screen Size (Display Size) | 6.2" | 6.5" | CAT S53 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 CAT S53. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 421 ppi | - | |
| Colour Depth | 16.7 million colours | - | |
| HDR | Yes | - | Samsung Galaxy S21 5G has HDR. |
| HDR Technology | HDR10+ | - | |
| Display Enhancement Technology | Eye Comfort Shield | Super Bright Display | |
| Display Refresh Rate | 120 Hz | - | |
| Display Features | AOD(Always On Display), Video Wallpaper | Glove & Wet Touch | |
| Display Protection (Screen Protector) | Corning Gorilla Glass Victus (scratch resistant glass) | Scratch-resistant glass, tempered glass |
| PROCESSOR | Samsung Galaxy S21 5G | CAT S53 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 480 5G | |
|---|---|---|---|
| Clock Speed | 2.84 GHz | 2 GHz | Samsung Galaxy S21 5G has higher clock speed than CAT S53. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| MEMORY | Samsung Galaxy S21 5G | CAT S53 |
|---|
| RAM | LPDDR5 SDRAM - 8 GB | 6 GB | Samsung Galaxy S21 5G has more RAM than CAT S53. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
| User Memory | 101.2 GB | - | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSD |
| CAMERA | Samsung Galaxy S21 5G | CAT S53 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 2 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 48 Megapixel | CAT S53 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/1.79 | CAT S53 has better lens aperture than Samsung Galaxy S21 5G. |
| Field of View (FoV) | 79 degree(s) | - | |
| Pixel Size | 1.8 μm | - | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy S21 5G has optical stabilisation. |
| Focus Adjustment | 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 | Flash | |
| 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 | - | |
| 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) | - |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 2 Megapixel | Samsung Galaxy S21 5G has better second camera resolution than CAT S53. |
|---|---|---|---|
| Lens Type (2nd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/2.2 | - | |
| Field of View (2nd Camera) | 120 degree(s) | - | |
| Pixel Size (2nd Camera) | 1.4 μm | - | |
| Camera Functions (2nd Camera) | - | Macro camera |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 64 Megapixel | - | |
|---|---|---|---|
| Sensor Size (3rd Camera) | 1/1.72" | - | |
| Lens Type (3rd Camera) | Telephoto lens | - | |
| Lens Aperture (3rd Camera) | F/2.0 | - | |
| Field of View (3rd Camera) | 76 degree(s) | - | |
| 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. |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 10 Megapixel | 16 Megapixel | CAT S53 has better front camera resolution than Samsung Galaxy S21 5G. |
| Lens Aperture (Front) | F/2.2 | - | |
| Field of View (Front) | 80 degree(s) | - | |
| Pixel Size (Front) | 1.22 μm | - | |
| Focus Adjustment | Automatic | - | |
| Camera Features (Front) | Dual Pixel AF | - |
| BATTERY AND CHARGING | Samsung Galaxy S21 5G | CAT S53 |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 5500 mAh | CAT S53 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 | Yes | Both phones can be charged wirelessly. |
| Wireless Charging Standards | WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare | Qi | |
| 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 |
- | |
| Battery Technology | - | Lithium polymer |
| CELLULAR | Samsung Galaxy S21 5G | CAT S53 |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 5G | Both phones have the same mobile network generation. |
| Operating System | Android 11 | Android 11 | |
| Intelligent Assistant | Bixby | - | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, GLONASS, Galileo | - |
| COMMUNICATIONS | Samsung Galaxy S21 5G | CAT S53 |
|---|
| Data Transmission | FDD-LTE, TDD-LTE, 5G NR FR1, 5G NR FR2 | LTE, VoLTE, 5G NR FR1 | |
|---|---|---|---|
| 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 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 34, 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 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | N41, n71, n260, n261 | N1, n2, n3, n5, n7, n8, n28, n41, n66, n77, n78 | |
| 5G NR Frequency | TDD TD 2500, FDD 600, TDD 39GHz, TDD 28GHz | FDD 2100, FDD 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 700APT, TDD TD 2500, FDD AWS-3, TDD TD 3700, TDD TD 3500 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac/ax | IEEE 802.11ax | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.1 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| MEDIA | Samsung Galaxy S21 5G | CAT S53 |
|---|
| 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 | - | |
|---|---|---|---|
| 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 | CAT S53 |
|---|
| 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 | - | |
| Security Devices | Fingerprint reader (under display), face recognition | - | |
| 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 | Fast Charging, 2 years of Security Updates, programmable push-to-talk button, Android Enterprise Zero-touch enrollment |
| OTHERS | Samsung Galaxy S21 5G | CAT S53 |
|---|
| Included Accessories | SIM card removal tool, USB-C to USB-C cable | - | |
|---|---|---|---|
| Compliant Standards | VDE, IP68, HAC (Hearing Aid Compatible), SGS Eye Care Display Certification | IP68, IP69K, MIL-STD-810H | |
| Max Depth of Water Resistance | 1.5 m | 1.5 m | |
| Max Height of Shock Resistance | - | 1.8 m | |
| Max Operating Temperature | - | 55 °C | |
| Min Operating Temperature | - | -25 °C |
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