In depth comparison and review of CAT S31 and CAT S75. 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 | CAT S31 | CAT S75 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch - Rugged | Touch - Rugged | |
| Height | 146 mm | 171 mm | CAT S75 has greater height than CAT S31. |
| Width | 74.42 mm | 80 mm | CAT S75 has greater width than CAT S31. |
| Depth | 12.6 mm | 11.9 mm | CAT S75 is narrower than CAT S31. |
| Weight | 200 g | 268 g | CAT S31 is lighter than CAT S31. |
| Protection | Shockproof, dustproof, waterproof | Waterproof, sandproof, dirtproof, drop-proof, temperature protection, dust-resistant | |
| Waterproof (Water-resistant) | Yes | Yes | Both phones are waterproof. |
| IP rating | IP68 | IP68, IP69K, IP69 | |
| SAR Value | 1.649 W/kg (body), 0.799 W/kg (head) | 1.479 W/kg (body), 0.997 W/kg (head), 3.265 W/kg (limb) | |
| Integrated Components | - | FM radio, LED flashlight | |
| 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 | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | CAT S31 | CAT S75 |
|---|
| Display Type | LCD display | - | |
|---|---|---|---|
| Display Technology | IPS | - | |
| Screen Size (Display Size) | 4.7" | 6.58" | CAT S75 has larger screen size than CAT S31. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | - | |
| Display Format | HD | Full HD+ | |
| Aspect Ratio | - | 20:9 | |
| Display Enhancement Technology | Super Bright Display | - | |
| Display Refresh Rate | - | 120 Hz | |
| Display Features | - | Glove & Wet Touch | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | Corning Gorilla Glass Victus (scratch resistant glass) |
| PROCESSOR | CAT S31 | CAT S75 |
|---|
| Processor Type (CPU) | Qualcomm | MediaTek Dimensity 930 | |
|---|---|---|---|
| Processor Number | MSM8909 | - | |
| Clock Speed | - | 2.2 GHz | |
| Processor Core Qty | Quad-core | 8-core | CAT S75 has higher processor core quantity than CAT S31. |
| MEMORY | CAT S31 | CAT S75 |
|---|
| RAM | 2 GB | LPDDR4X SDRAM - 6 GB | CAT S75 has more RAM than CAT S31. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 128 GB | CAT S75 has more internal memory than CAT S31. |
| Memory Interface | - | eMMC | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSD, microSDXC - up to 256 GB |
| CAMERA | CAT S31 | CAT S75 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 3 | |
|---|---|---|---|
| Sensor Resolution | 8 Megapixel | 50 Megapixel | CAT S75 has better camera resolution than CAT S31. |
| Lens Aperture | - | F/1.8 | |
| Focus Adjustment | Automatic | Automatic | |
| Camera Modes | - | Underwater mode | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 1280 x 720 (720p) at 120 fps | - | |
| Camera Features (Functions) | - | Phase Detect Auto-Focus (PDAF) |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 8 Megapixel | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Super wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Camera Functions (3rd Camera) | - | Macro camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 2 Megapixel | 8 Megapixel | CAT S75 has better front camera resolution than CAT S31. |
| Lens Aperture (Front) | - | F/2.0 | |
| Focus Adjustment | Focus free | Focus free |
| BATTERY AND CHARGING | CAT S31 | CAT S75 |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 5000 mAh | CAT S75 has larger battery capacity than CAT S31. |
|---|---|---|---|
| Standby Time | 912 hours | - | |
| Talk Time | 1800 minutes | - | |
| Run Time Details | Talk: up to 1800 min Standby: up to 912 hrs |
- | |
| Battery Technology | Lithium Ion | Lithium Ion |
| CELLULAR | CAT S31 | CAT S75 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | CAT S75 has more advanced generation mobile network. |
| Operating System | Android 7.0 Nougat | Android 12 | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo, LTEPP, SUPL |
| COMMUNICATIONS | CAT S31 | CAT S75 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | FDD-LTE, TDD-LTE, 5G NR | |
|---|---|---|---|
| 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 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 20, Band 28, Band 32, Band 38, Band 39, 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 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | |
| 5G NR Band | - | N1, n2, n3, n5, n7, n8, n20, n28, n38, n41, n75, n77, n78, n40 | |
| 5G NR Frequency | - | FDD 2100, FDD 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, SDL DL 1500+, TDD TD 3700, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.1 | Bluetooth 5.1 | |
| NFC | - | Yes | CAT S75 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| FEATURES | CAT S31 | CAT S75 |
|---|
| Phone Functions | 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, digital compass, gyroscope | |
| Security Devices | - | Fingerprint reader (rear) | |
| Additional Phone Features | Dual microphones, Wet Touchscreen Operation, Glove Touchscreen Operation | SOS button, SOS function, Programmable side key, guaranteed upgrade to Android 13, guaranteed upgrade to Android 14, Satellite Messaging | |
| Android Enterprise Recommended | Yes | Yes |
| OTHERS | CAT S31 | CAT S75 |
|---|
| Included Accessories | Power adapter | USB cable | |
|---|---|---|---|
| Compliant Standards | MIL-STD 810G, IP68 | IP68, IP69K, MIL-STD-810H | |
| Max Depth of Water Resistance | 1.2 m | 5 m | |
| Max Height of Shock Resistance | 1.8 m | 1.8 m | |
| Max Operating Temperature | 55 °C | 55 °C | |
| Min Operating Temperature | -30 °C | -25 °C |
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