
Caterpillar Cat® S31 Smartphone. YBLTV Review by Washington Thompson III.
YBLTV Review: Caterpillar – Cat® S31 Smartphone
When being asked to write a review for Caterpillar’s S31 smartphone, I have to write honestly — I was a little skeptical about how the phone would actually look and work. I can tell you, my fears were for naught, the phone is incredible. Though I was unable to test the calling quality because the phone came unlocked without a Sim card, the rugged smartphone’s features and abilities were quite enough to give me an idea of the phone’s capabilities.
Caterpillar’s S31 Rugged Smartphone
The S31 smartphone is more than comparable to some of the best phones on the market today. The phone is not a technological change from what’s currently available. Instead, it takes every innovation in phones over the last decade and make them work better. Its 4.7 inch screen is not as big as the most recent phones released. It’s more inline with the iPhone 7 — though the 7 may be thinner. The S31 has a width of 2.9 inches, making it a bit thicker. I feel more comfortable with the S31 than with other smartphones on the market. The main reason being is the piece of mind the S31 rugged smartphone provides.

Caterpillar Cat® S31 Smartphone. YBLTV Review by Washington Thompson III.
The Rugged Part
Cat’s S31 is drop proof, waterproof and dust proof with scratch-resistant gorilla glass. The S31 can even be used when your fingers are wet. The S31 may not be a phone for everyone. It’s heavier than the iPhone 7 and the 2/8 megapixel front/back cameras on the S31 are lower than the 7/12 megapixels present on the iPhone. The S31 is never the less a powerhouse from Caterpillar Inc., a company that is generally not known for their smartphones.

Caterpillar Cat® S31 Smartphone. YBLTV Review by Washington Thompson III.
“Cat S31 Smartphone: when more than just aesthetics are your concern with a smartphone,” – Washington Thompson III, YBLTV Writer / Reviewer

Cat® S31 Smartphone. Image Source: Caterpillar, Inc.
Specifications
Listed below are full specs for the Cat® S31 Smartphone:
Battery
- Type: Non-removable Lithium Ion
- Capacity: 4000mAh
- Talk Time: 30 hours
- StandBy Time: 38 days
- Display Type: 4.7” HD 720 IPS, wet finger/glove on working technology*, Super Bright Display
- Display Cover: Corning® Gorilla® Glass 3
- Main/Rear: 8MP Autofocus, LED flash
- Front: 2MP Fixed Focus
- Audio Jack: 3.5mm
- Bluetooth: 4.1
- Wi-Fi: 802.11 b/g/n (2.4G)
- USB: micro-USB 2.0, USB-OTG
- Sim Type: Nano sim, dual and single SIM variants
- GPS: GLONASS, GPS, aGPS, Beidou
Data Speed
- Maximum Downlink Data Rate: 150Mbps
- Data Speed (Maximum Uplink Data Rate): 50Mbps
- ROM Flash: 16GB
- RAM: 2GB
- Extended Storage: microSD™ up to 128GB
- 2G: GSM/GPRS/EDGE
- 2G Frequencies: Quad-Band 850/900/1800/1900
- 3G: B1(2100), B2(1900), B5(850), B8(900) (EU) ¦ B1(2100), B2(1900), B4(AWS), B5(850), B8(900) (US/APAC)
- 4G Bands (LTE): EU: 1, 2, 3, 5, 7, 8, 20; US: 2, 3, 4, 5, 7, 12, 17; APAC: 1, 2, 3, 4, 5, 7, 8, 28
Processor
- Processor Type: Qualcomm MSM8909 Quad core
- Platform/OS: Google Android™ Nougat
Rugged
- IP Rating: IP68 Certified
- Waterproof: Up to 1.2m for 35mins
- Dust Proof: Dust Resistant
- Drop Test: Up to 1.8m (6ft)
- Military Standard: MIL-SPEC 810G, Shock and Drop, Operating Temp: -30°C (-22°F) to 55°C (131°F), Category 4 vibration
- Accelerometer: Yes
- Proximity Sensor: Yes
- Ambient Light Sensor: Yes
- Compass: Yes
Size
- Size: 146 x 74.42 x12.6mm
- Weight: 200g

Caterpillar Cat® S31 Smartphone. YBLTV Review by Washington Thompson III.
Final Thoughts
Though my time with the S31 was short, I was able to get a good understanding of the smartphone Caterpillar is offering. The S31 may not be for everyone — it’s a rugged smartphone. It is a great phone for those in construction and other professions who do hard work and expect the same from their smartphone. The S31 was a welcome surprise for me. It didn’t reinvent the wheel but I believe Caterpillar is one step closer with smartphones like the S31.
RELATED: The Caterpillar Cat® S41 Smartphone – Rugged Functionality at Your Fingertips
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Disclosure of Material Connection: YBLTV Writer / Reviewer, Washington Thompson III was provided on loan the Caterpillar CAT S41 Smartphone from Caterpillar in consideration for a Product Review.