CAT S31 vs. Samsung Galaxy S21 5G

Phone Comparison, Reviews and Tests

In depth comparison and review of CAT S31 and Samsung Galaxy S21 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.

Phone Specifications Comparison

CAT S31 vs. Samsung Galaxy S21 5G Comparison Chart
DESIGN AND DIMENSIONS CAT S31 Samsung Galaxy S21 5G
Product Type Smartphone Smartphone
Manufacturer Model Number - SM-G991U1
Form Factor Touch - Rugged Touch
Height 146 mm 151.7 mm Samsung Galaxy S21 5G has greater height than CAT S31.
Width 74.42 mm 71.2 mm CAT S31 has greater width than Samsung Galaxy S21 5G.
Depth 12.6 mm 7.9 mm Samsung Galaxy S21 5G is narrower than CAT S31.
Weight 200 g 171 g Samsung Galaxy S21 5G is lighter than CAT S31.
Body Colour - Phantom grey | Phantom white
Protection Shockproof, dustproof, waterproof Dustproof, splashproof, water-resistant
Waterproof (Water-resistant) Yes Yes Both phones are waterproof.
IP rating IP68 IP68
SAR Value 1.649 W/kg (body), 0.799 W/kg (head) 1.58 W/kg (simultaneous), 1.11 W/kg (wireless router), 1.08 W/kg (body), 0.74 W/kg (head)
Connector Type Micro-USB - 5 pin Micro-USB Type B
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM Nano SIM, Electronic SIM card (e-SIM)
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY CAT S31 Samsung Galaxy S21 5G
Display Type LCD display OLED display
Display Technology IPS Infinity-O Dynamic AMOLED 2X
Screen Size (Display Size) 4.7" 6.2" Samsung Galaxy S21 5G has larger screen size than CAT S31.
Screen Resolution (Display Resolution) 1280 x 720 pixels 2400 x 1080 pixels Samsung Galaxy S21 5G has better screen resolution than CAT S31.
Display Format HD Full 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 Super Bright Display Eye Comfort Shield
Display Refresh Rate - 120 Hz
Display Features - AOD(Always On Display), Video Wallpaper
Display Protection (Screen Protector) Corning Gorilla Glass 3 (scratch resistant glass) Corning Gorilla Glass Victus (scratch resistant glass)
PROCESSOR CAT S31 Samsung Galaxy S21 5G
Processor Type (CPU) Qualcomm Qualcomm Snapdragon 888
Processor Number MSM8909 -
Clock Speed - 2.84 GHz
Processor Core Qty Quad-core 8-core Samsung Galaxy S21 5G has higher processor core quantity than CAT S31.
MEMORY CAT S31 Samsung Galaxy S21 5G
RAM 2 GB LPDDR5 SDRAM - 8 GB Samsung Galaxy S21 5G has more RAM than CAT S31.
Internal Memory Size (Storage Capacity) 16 GB 128 GB Samsung Galaxy S21 5G has more internal memory than CAT S31.
User Memory - 101.2 GB
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 128 GB -
CAMERA CAT S31 Samsung Galaxy S21 5G
MAIN CAMERA
Number of Main Cameras 1 3
Sensor Resolution 8 Megapixel 12 Megapixel Samsung Galaxy S21 5G has better camera resolution than CAT S31.
Sensor Size - 1/1.76"
Lens Type - Wide-angle lens
Lens Aperture - F/1.8
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 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 LED flash High CRI LED flash
Video Resolutions 1280 x 720 (720p) at 120 fps 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
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
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) 2 Megapixel 10 Megapixel Samsung Galaxy S21 5G has better front camera resolution than CAT S31.
Lens Aperture (Front) - F/2.2
Field of View (Front) - 80 degree(s)
Pixel Size (Front) - 1.22 μm
Focus Adjustment Focus free Automatic
Camera Features (Front) - Dual Pixel AF
BATTERY AND CHARGING CAT S31 Samsung Galaxy S21 5G
Battery Capacity (Battery Size) 4000 mAh 4000 mAh Both phones have the same battery capacity.
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
Standby Time 912 hours -
Talk Time 1800 minutes 1800 minutes Both phones have the same battery life when making calls.
Run Time Details Talk: up to 1800 min
Standby: up to 912 hrs
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 Ion -
CELLULAR CAT S31 Samsung Galaxy S21 5G
Technology WCDMA (UMTS) / GSM CDMA2000 1X / GSM / WCDMA (UMTS)
Mobile Broadband Generation 4G 5G Samsung Galaxy S21 5G has more advanced generation mobile network.
Operating System Android 7.0 Nougat Android 11
Intelligent Assistant - Bixby
Payment Technology - Samsung Pay
Navigation GPS, A-GPS, GLONASS, BeiDou GPS, GLONASS, Galileo
COMMUNICATIONS CAT S31 Samsung Galaxy S21 5G
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE FDD-LTE, TDD-LTE, 5G NR FR1, 5G NR FR2
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 CDMA2000 1X
3G UMTS Band Band 1, Band 2, Band 5, Band 8 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 850, 900 2100, 1900, 1700, 850, 900
4G LTE Band Band 1, Band 2, Band 3, Band 5, Band 7, Band 8, Band 20 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
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD 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
5G NR Band - N41, n71, n260, n261
5G NR Frequency - TDD TD 2500, FDD 600, TDD 39GHz, TDD 28GHz
Wireless Interface IEEE 802.11b/g/n IEEE 802.11a/b/g/n/ac/ax
Bluetooth Bluetooth 4.1 Bluetooth 5.0
NFC - Yes Samsung Galaxy S21 5G has NFC reader for mobile payments.
Messaging Services SMS, MMS -
MEDIA CAT S31 Samsung Galaxy S21 5G
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 CAT S31 Samsung Galaxy S21 5G
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, ambient light sensor, proximity sensor, digital compass Accelerometer, ambient light sensor, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor
Security Devices - Fingerprint reader (under display), face recognition
Additional Phone Features Dual microphones, Wet Touchscreen Operation, Glove Touchscreen Operation 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
Android Enterprise Recommended Yes -
OTHERS CAT S31 Samsung Galaxy S21 5G
Included Accessories Power adapter SIM card removal tool, USB-C to USB-C cable
Compliant Standards MIL-STD 810G, IP68 VDE, IP68, HAC (Hearing Aid Compatible), SGS Eye Care Display Certification
Max Depth of Water Resistance 1.2 m 1.5 m
Max Height of Shock Resistance 1.8 m -
Max Operating Temperature 55 °C -
Min Operating Temperature -30 °C -
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