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The Cat S31 smartphone is built to survive. Its high quality rugged materials mean you can drop it, dirty it, or dunk it in water and your S31 will keep on working for you. It's packed with features that help in harsh or outdoor environments including a screen optimized for use in Direct sunlight or when wet. Never lose power again with a 4000 mAh battery that lasts. The Cat S31 is a truly rugged phone that can handle whatever’s thrown at it.
The truly rugged smartphone with ultra-tough features and a battery that lasts for longer. Built to handle the extreme conditions you face every day at work and play. Drop it, dunk it, or forget to charge it - the Cat S31 will not let you down. Your smartphone is not only certified to the highest industry standard for ruggedness, MIL SPEC 810G and IP68 water and dust resistant, it also boasts capabilities that reach beyond these tests. Drop-proof onto concrete from an impressive height of 1.8m, tough enough to handle thermal shocks and salt mist spray, waterproof for up to 35 minutes in depths of up to 1.2 metres.
The Cat S31 is the practical smartphone, packed with genuinely useful features so that you can make the most out of your day. Its high capacity battery and expandable storage of up to 128GB guarantees that the daily performance will not be compromised.
The Cat S31 is a truly rugged phone. Water, dust and drop proof with a scratch-resistant screen – it can handle whatever’s thrown at it in a wide range of unique environments.
Waterproof up to 1.2m for 35 minutes, IP68 certified, Mil-Spec 810G, shock and drop proof.
Working in remote locations, or being far away from electrical outlets does not need to be a problem anymore. The Cat S31 also boasts a large 4000 mAh battery to help you stay connected even in isolated places.
Bands and frequencies
2G GSM 850/900/1800/1900 MHz
3G B1 (2100), B2 (1900), B5 (850), B8 (900) (EU); B1 (2100), B2 (1900), B4 (AWS), B5 (850), B8 (900) (US / APAC)
4G EU Bands (LTE): 1, 2, 3, 5, 7, 8, 20; USA UU .: 2, 3, 4, 5, 7, 12, 17; APAC: 1, 2, 3, 4, 5, 7, 8, 28
HSPA, LTE Cat 4 150/50 Mbps
SIM card type
Accelerometer, proximity, compass, ambient light.
Capacitive touch screen
Main Screen Size
Main Screen Resolution
1280 x 720
Main Screen Format
HD video capture
Android 7.0 Nougat
Qualcomm MSM8909 Snapdragon 210
Adreno 304 GPU
Type of expansion slot
MicroSD (TF Card)
Up to 128GB
802.11 b / g / n (2.4G)
micro-USB 2.0, USB-OTG
Non-removable lithium ion battery
Up to 30 hour (s)
Up to 38 day (s)
GLONASS, GPS, aGPS, Beidou
SMS, MMS, Email, Push Email, IM
Wi-Fi / GPS
Screen type: 4.7 "HD 720 IPS, wet finger / glove in working technology, Super bright screen
Screen cover: Corning Gorilla Glass 3
IP Rating: IP68 Certificate
Water resistant: up to 1.2 m for 35 minutes
Dust proof: dust resistant
Drop test: up to 1.8 m (6 feet)
Military standard: MIL-SPEC 810G, Shock and fall, Operating temperature: -30C (-22F) to 55C (131F), category 4 vibration
Dimensions and weight
Dimensions (H x W x D)
5.75 "x 2.93" x 0.50 "