In depth comparison and review of CAT S31 and OPPO A9 2020. 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 | OPPO A9 2020 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | CPH1941 | |
| Form Factor | Touch - Rugged | Touch | |
| Height | 146 mm | 163.6 mm | OPPO A9 2020 has greater height than CAT S31. |
| Width | 74.42 mm | 75.6 mm | OPPO A9 2020 has greater width than CAT S31. |
| Depth | 12.6 mm | 9.1 mm | OPPO A9 2020 is narrower than CAT S31. |
| Weight | 200 g | 195 g | OPPO A9 2020 is lighter than CAT S31. |
| Body Colour | - | Marine green | Space purple | |
| Body Material | - | 3D glass | |
| 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) | 0.976 W/kg (body), 0.847 W/kg (head), 2.118 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 Handset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | CAT S31 | OPPO A9 2020 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | TFT | |
| Screen Size (Display Size) | 4.7" | 6.5" | OPPO A9 2020 has larger screen size than CAT S31. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1600 x 720 pixels | OPPO A9 2020 has better screen resolution than CAT S31. |
| Display Format | HD | - | |
| Pixel Density | - | 269 ppi | |
| Max Brightness | - | 480 cd/m² | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | - | 1500:1 | |
| Display Enhancement Technology | Super Bright Display | Blue light filter | |
| Display Features | - | In-Cell Display Technology, Sunlight screen | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | - |
| PROCESSOR | CAT S31 | OPPO A9 2020 |
|---|
| Processor Type (CPU) | Qualcomm | Qualcomm Snapdragon 665 | |
|---|---|---|---|
| Processor Number | MSM8909 | - | |
| Processor Core Qty | Quad-core | - | |
| Graphics System (GPU) | - | Qualcomm ADRENO 610 |
| MEMORY | CAT S31 | OPPO A9 2020 |
|---|
| RAM | 2 GB | LPDDR4X SDRAM - 4 GB | OPPO A9 2020 has more RAM than CAT S31. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 128 GB | OPPO A9 2020 has more internal memory than CAT S31. |
| Memory Interface | - | UFS 2.1 | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 256 GB |
| CAMERA | CAT S31 | OPPO A9 2020 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 8 Megapixel | 48 Megapixel | OPPO A9 2020 has better camera resolution than CAT S31. |
| Sensor Size | - | 1/2.25" | |
| Sensor Type | - | CMOS | |
| Lens Aperture | - | F/1.8 | |
| Pixel Size | - | 0.8 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Camera Modes | - | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Portrait, Night, Ultra Night Mode 2.0 | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 1280 x 720 (720p) at 120 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps | |
| Camera Features (Functions) | - | Electronic Image Stabiliser (EIS) |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 8 Megapixel | |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/4.0" | |
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.25 | |
| Field of View (2nd Camera) | - | 119 degree(s) | |
| Pixel Size (2nd Camera) | - | 1.12 μm |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Sensor Size (3rd Camera) | - | 1/5" | |
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Pixel Size (3rd Camera) | - | 1.75 μm |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Sensor Size (4th Camera) | - | 1/5" | |
| Lens Aperture (4th Camera) | - | F/2.4 | |
| Pixel Size (4th Camera) | - | 1.75 μm |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 2 Megapixel | 16 Megapixel | OPPO A9 2020 has better front camera resolution than CAT S31. |
| Sensor Size (Front) | - | 1/3.1" | |
| Lens Aperture (Front) | - | F/2.0 | |
| Pixel Size (Front) | - | 1 μm | |
| Focus Adjustment | Focus free | - | |
| Camera Modes (Front) | - | AI Beauty | |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps |
| BATTERY AND CHARGING | CAT S31 | OPPO A9 2020 |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 5000 mAh | OPPO A9 2020 has larger battery capacity than CAT S31. |
|---|---|---|---|
| Standby Time | 912 hours | 450 hours | CAT S31 has longer standby time than OPPO A9 2020. |
| Talk Time | 1800 minutes | 2700 minutes | OPPO A9 2020 has longer battery life when making calls than CAT S31. |
| Run Time Details | Talk: up to 1800 min Standby: up to 912 hrs |
Standby: up to 450 hrs Talk: up to 2700 min |
|
| Battery Technology | Lithium Ion | - |
| CELLULAR | CAT S31 | OPPO A9 2020 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 7.0 Nougat | ColorOS 6.0.1 (based on Android 9) | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | CAT S31 | OPPO A9 2020 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 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 6, Band 8, Band 19 | |
| 3G UMTS Frequency | 2100, 1900, 850, 900 | 2100, 1900, 1700, 850, 800, 900, 800 | |
| 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 18, Band 19, Band 20, Band 26, Band 28, 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 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2600, TDD 1900, 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 | |
| NFC | - | Yes | OPPO A9 2020 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | CAT S31 | OPPO A9 2020 |
|---|
| Sound Enhancements | - | Dolby Atmos sound technology, Hi-Res audio |
|---|
| FEATURES | CAT S31 | OPPO A9 2020 |
|---|
| 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, gyro sensor, geomagnetic sensor | |
| Security Devices | - | Face recognition | |
| Additional Phone Features | Dual microphones, Wet Touchscreen Operation, Glove Touchscreen Operation | Multitasking, Game Boost 2.0 | |
| Android Enterprise Recommended | Yes | - |
| OTHERS | CAT S31 | OPPO A9 2020 |
|---|
| Included Accessories | Power adapter | Headphones, power adapter, SIM card removal tool, cover, USB-C cable, screen protector (pre-applied) | |
|---|---|---|---|
| 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 | - |
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