In depth comparison and review of CAT S31 and OPPO Reno8 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.
| DESIGN AND DIMENSIONS | CAT S31 | OPPO Reno8 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch - Rugged | Touch | |
| Height | 146 mm | 160 mm | OPPO Reno8 5G has greater height than CAT S31. |
| Width | 74.42 mm | 73.4 mm | CAT S31 has greater width than OPPO Reno8 5G. |
| Depth | 12.6 mm | 7.67 mm | OPPO Reno8 5G is narrower than CAT S31. |
| Weight | 200 g | 179 g | OPPO Reno8 5G is lighter than CAT S31. |
| Body Colour | - | Shimmer black | Gold shimmer | |
| 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) | 0.96 W/kg (head), 1.288 W/kg (body), 2.756 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 | |
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | CAT S31 | OPPO Reno8 5G |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | IPS | Rigid AMOLED | |
| Screen Size (Display Size) | 4.7" | 6.4" | OPPO Reno8 5G has larger screen size than CAT S31. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 2400 x 1080 pixels | OPPO Reno8 5G has better screen resolution than CAT S31. |
| Display Format | HD | Full HD | |
| Pixel Density | - | 409 ppi | |
| Max Brightness | - | 800 cd/m² | |
| Colour Depth | - | 16.7 million colours | |
| HDR | - | Yes | OPPO Reno8 5G has HDR. |
| Display Enhancement Technology | Super Bright Display | - | |
| Display Refresh Rate | - | 90 Hz | |
| Touch Sampling Rate | - | 180 Hz | |
| Display Features | - | O1 Ultra Vision Engine, Eye Care, 97% NTSC, 95% DCI-P3 | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | Corning Gorilla Glass 5 (scratch resistant glass) |
| PROCESSOR | CAT S31 | OPPO Reno8 5G |
|---|
| Processor Type (CPU) | Qualcomm | MediaTek Dimensity 1300 | |
|---|---|---|---|
| Processor Number | MSM8909 | - | |
| Clock Speed | - | 3 GHz | |
| Processor Core Qty | Quad-core | 8-core | OPPO Reno8 5G has higher processor core quantity than CAT S31. |
| Graphics System (GPU) | - | ARM Mali-G77 MC9 |
| MEMORY | CAT S31 | OPPO Reno8 5G |
|---|
| RAM | 2 GB | LPDDR4X SDRAM - 8 GB | OPPO Reno8 5G has more RAM than CAT S31. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 256 GB | OPPO Reno8 5G has more internal memory than CAT S31. |
| Memory Interface | - | UFS 3.1 | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | - |
| CAMERA | CAT S31 | OPPO Reno8 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 3 | |
|---|---|---|---|
| Sensor Resolution | 8 Megapixel | 50 Megapixel | OPPO Reno8 5G has better camera resolution than CAT S31. |
| Sensor Size | - | 1/1.56" | |
| Sensor Name | - | Sony Exmor RS IMX766 sensor | |
| Lens Aperture | - | F/1.8 | |
| Lens Construction | - | 7-element | |
| Field of View (FoV) | - | 86 degree(s) | |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | - | Stickers, DOL-HDR | |
| Camera Modes | - | Panorama, Time-lapse mode, Slow motion mode, Pro mode, HYPERLAPSE, Portrait, Night, Macro slow-motion video, Dual-View Video, Extra HD, Text scanner | |
| Light Source | LED flash | - | |
| Video Resolutions | 1280 x 720 (720p) at 120 fps | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, 1280 x 720 (720p) at 60 fps | |
| Camera Features (Functions) | - | AI Portrait, All Pixel OmniDirectional PDAF |
| SECOND CAMERA |
|---|
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
|---|---|---|---|
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Lens Element Qty (2nd Camera) | - | 5-element | |
| Field of View (2nd Camera) | - | 112 degree(s) |
| THIRD CAMERA |
|---|
| Lens Element Qty (3rd Camera) | - | 3-element | |
|---|---|---|---|
| Field of View (3rd Camera) | - | 89 degree(s) | |
| Camera Functions (3rd Camera) | - | Macro camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 2 Megapixel | 32 Megapixel | OPPO Reno8 5G has better front camera resolution than CAT S31. |
| Sensor Size (Front) | - | 1/2.74" | |
| Sensor Name (Front) | - | Sony IMX709 sensor | |
| Lens Aperture (Front) | - | F/2.4 | |
| Lens Element Qty (Front) | - | 5-element | |
| Field of View (Front) | - | 85 degree(s) | |
| Focus Adjustment | Focus free | - | |
| Special Effects (Front) | - | RGB, Stickers, DOL-HDR | |
| Camera Modes (Front) | - | Panorama, Time-lapse mode, night mode, Portrait, Dual-View Video | |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Front) | - | AI portrait retouching |
| BATTERY AND CHARGING | CAT S31 | OPPO Reno8 5G |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 4500 mAh | OPPO Reno8 5G has larger battery capacity than CAT S31. |
|---|---|---|---|
| Fast Charging Technology | - | Qualcomm Quick Charge, VOOC Flash Charge technology, SuperVOOC Flash Charge technology, Power Delivery | OPPO Reno8 5G has fast charging technology. |
| 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 | - |
| CELLULAR | CAT S31 | OPPO Reno8 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | OPPO Reno8 5G has more advanced generation mobile network. |
| Operating System | Android 7.0 Nougat | ColorOS 12.1 (based on Android 12) | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | CAT S31 | OPPO Reno8 5G |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 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 12, Band 17, 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 700a, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | |
| 5G NR Band | - | N1, n3, n5, n7, n8, n20, n28, n38, n41, n77, n78, n40 | |
| 5G NR Frequency | - | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, TDD TD 3700, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac/ax | |
| Bluetooth | Bluetooth 4.1 | Bluetooth 5.3 BLE | |
| NFC | - | Yes | OPPO Reno8 5G has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | CAT S31 | OPPO Reno8 5G |
|---|
| Supported Digital Audio Standards | - | AAC, LDAC, SBC, apt-X HD |
|---|
| FEATURES | CAT S31 | OPPO Reno8 5G |
|---|
| 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, proximity sensor, geomagnetic sensor, gravity sensor, optical sensor, light sensor, gyroscope | |
| Security Devices | - | Fingerprint reader (under display), face recognition | |
| Additional Phone Features | Dual microphones, Wet Touchscreen Operation, Glove Touchscreen Operation | MIMO technology, Air Gesture, MU-MIMO technology, Step counter, AI System Booster, Battery Health Engine, Super-Conductive VC Liquid Cooling System | |
| Android Enterprise Recommended | Yes | - |
| OTHERS | CAT S31 | OPPO Reno8 5G |
|---|
| Included Accessories | Power adapter | Power adapter, SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | MIL-STD 810G, IP68 | TUV SUD, SGS Eye Care Display Certification, Netflix HD Certification, Amazon Prime Video HD Certification | |
| 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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