Detailed comparison and review of CAT S31 and Samsung Galaxy A21s. 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 | CAT S31 | Samsung Galaxy A21s |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | - | SM-A217F/DSN | |
Form Factor | Touch - Rugged | Touch | |
Height | 146 mm | 163.7 mm | Samsung Galaxy A21s has greater height than CAT S31. |
Width | 74.42 mm | 75.3 mm | Samsung Galaxy A21s has greater width than CAT S31. |
Depth | 12.6 mm | 8.9 mm | Samsung Galaxy A21s is narrower than CAT S31. |
Weight | 200 g | 192 g | Samsung Galaxy A21s is lighter than CAT S31. |
Body Colour | - | White | Blue | Black | |
Protection | Shockproof, dustproof, waterproof | - | |
Waterproof (Water-resistant) | Yes | - | CAT S31 is waterproof. |
IP rating | IP68 | - | |
SAR Value | 1.649 W/kg (body), 0.799 W/kg (head) | 1.544 W/kg (body), 0.422 W/kg (head), 2.21 W/kg (limb) | |
Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
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SIM Card Type (Size) | Nano SIM | Nano SIM | |
SIM Card Qty | Dual-SIM | Dual-SIM |
DISPLAY | CAT S31 | Samsung Galaxy A21s |
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Display Type | LCD display | LCD display | |
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Display Technology | IPS | PLS TFT | |
Screen Size (Display Size) | 4.7" | 6.5" | Samsung Galaxy A21s has larger screen size than CAT S31. |
Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1600 x 720 pixels | Samsung Galaxy A21s has better screen resolution than CAT S31. |
Display Format | HD | HD+ | |
Aspect Ratio | - | 20:9 | |
Colour Depth | - | 16.7 million colours | |
Display Enhancement Technology | Super Bright Display | - | |
Display Features | - | Infinity O display | |
Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | - |
PROCESSOR | CAT S31 | Samsung Galaxy A21s |
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Processor Type (CPU) | Qualcomm | - | |
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Processor Number | MSM8909 | - | |
Clock Speed | - | 2 GHz | |
Processor Core Qty | Quad-core | 8-core | Samsung Galaxy A21s has higher processor core quantity than CAT S31. |
MEMORY | CAT S31 | Samsung Galaxy A21s |
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RAM | 2 GB | 3 GB | Samsung Galaxy A21s has more RAM than CAT S31. |
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Internal Memory Size (Storage Capacity) | 16 GB | 32 GB | Samsung Galaxy A21s has more internal memory than CAT S31. |
User Memory | - | 19.5 GB | |
Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 512 GB |
CAMERA | CAT S31 | Samsung Galaxy A21s |
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MAIN CAMERA |
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Number of Main Cameras | 1 | 4 | |
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Sensor Resolution | 8 Megapixel | 48 Megapixel | Samsung Galaxy A21s has better camera resolution than CAT S31. |
Lens Type | - | Wide-angle lens | |
Lens Aperture | - | F/2.0 | |
Field of View (FoV) | - | 80 degree(s) | |
Focus Adjustment | Automatic | Automatic | |
Digital Zoom | - | 8x | |
Camera Modes | - | Live Focus mode | |
Light Source | LED flash | LED flash | |
Video Resolutions | 1280 x 720 (720p) at 120 fps | 1920 x 1080 (1080p) at 30 fps | |
Camera Features (Functions) | - | Live Focus |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | - | 8 Megapixel | |
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Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
Lens Aperture (2nd Camera) | - | F/2.2 | |
Field of View (2nd Camera) | - | 123 degree(s) |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
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Lens Aperture (3rd Camera) | - | F/2.4 | |
Camera Functions (3rd Camera) | - | Macro camera | |
Camera Features (3rd Camera) | - | 4cm macro photography |
FOURTH CAMERA |
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Sensor Resolution (4th Camera) | - | 2 Megapixel | |
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Lens Aperture (4th Camera) | - | F/2.4 | |
Camera Functions (4th Camera) | - | Depth camera |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 2 Megapixel | 13 Megapixel | Samsung Galaxy A21s has better front camera resolution than CAT S31. |
Lens Aperture (Front) | - | F/2.2 | |
Focus Adjustment | Focus free | Focus free |
BATTERY AND CHARGING | CAT S31 | Samsung Galaxy A21s |
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Battery Capacity (Battery Size) | 4000 mAh | 5000 mAh | Samsung Galaxy A21s has larger battery capacity than CAT S31. |
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Standby Time | 912 hours | - | |
Talk Time | 1800 minutes | 3240 minutes | Samsung Galaxy A21s has longer battery life when making calls than CAT S31. |
Run Time Details | Talk: up to 1800 min Standby: up to 912 hrs |
Active online usage (4G): up to 23 hrs Active online usage (Wi-Fi): up to 23 hrs Playback (video): up to 21 hrs Playback (audio): up to 109 hrs Talk (4G): up to 3240 min |
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Battery Technology | Lithium Ion | Lithium Ion |
CELLULAR | CAT S31 | Samsung Galaxy A21s |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
Operating System | Android 7.0 Nougat | - | |
User Interface | - | One UI | |
Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo |
COMMUNICATIONS | CAT S31 | Samsung Galaxy A21s |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
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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 5, Band 8 | Band 1, Band 2, Band 5, Band 8 | |
3G UMTS Frequency | 2100, 1900, 850, 900 | 2100, 1900, 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 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 850, FDD 2600, FDD 900, FDD 800 DD | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
Bluetooth | Bluetooth 4.1 | Bluetooth 5.0 LE | |
NFC | - | Yes | Samsung Galaxy A21s has NFC reader for mobile payments. |
Messaging Services | SMS, MMS | SMS, MMS |
MEDIA | CAT S31 | Samsung Galaxy A21s |
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Supported Digital Audio Standards | - | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
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Supported Digital Video Standards | - | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | |
Sound Enhancements | - | Dolby Atmos sound technology |
FEATURES | CAT S31 | Samsung Galaxy A21s |
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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 | |
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Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass | Accelerometer, proximity sensor, gyro sensor, geomagnetic sensor | |
Security Devices | - | Face recognition, fingerprint reader | |
Additional Phone Features | Dual microphones, Wet Touchscreen Operation, Glove Touchscreen Operation | Samsung KNOX, Virtual Light Sensing | |
Android Enterprise Recommended | Yes | - |
OTHERS | CAT S31 | Samsung Galaxy A21s |
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Included Accessories | Power adapter | Power adapter | |
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Compliant Standards | MIL-STD 810G, IP68 | - | |
Max Depth of Water Resistance | 1.2 m | - | |
Max Height of Shock Resistance | 1.8 m | - | |
Max Operating Temperature | 55 °C | - | |
Min Operating Temperature | -30 °C | - |