Detailed comparison and review of CAT S31 and LG K40. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | CAT S31 | LG K40 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | LM-X420EMW | |
| Form Factor | Touch - Rugged | Touch | |
| Height | 146 mm | 153 mm | LG K40 has greater height than CAT S31. |
| Width | 74.42 mm | 71.9 mm | CAT S31 has greater width than LG K40. |
| Depth | 12.6 mm | 8.3 mm | LG K40 is narrower than CAT S31. |
| Weight | 200 g | 145 g | LG K40 is lighter than CAT S31. |
| Body Colour | - | New Aurora Black | Moroccan blue | |
| 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) | 1.597 W/kg (body), 0.518 W/kg (head) | |
| Integrated Components | - | FM radio | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
|
| SIM Card Type (Size) | Nano SIM | - | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | CAT S31 | LG K40 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | IPS | |
| Screen Size (Display Size) | 4.7" | 5.7" | LG K40 has larger screen size than CAT S31. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1440 x 720 pixels | LG K40 has better screen resolution than CAT S31. |
| Display Format | HD | HD | |
| Pixel Density | - | 282 ppi | |
| Aspect Ratio | - | 18:9 | |
| Display Enhancement Technology | Super Bright Display | - | |
| Display Features | - | Curved glass, FullVision display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | - |
| PROCESSOR | CAT S31 | LG K40 |
|---|
| Processor Type (CPU) | Qualcomm | MediaTek | |
|---|---|---|---|
| Processor Number | MSM8909 | MT6762 | |
| Clock Speed | - | 2 GHz | |
| Processor Core Qty | Quad-core | 8-core | LG K40 has higher processor core quantity than CAT S31. |
| 64-bit Architecture | - | Yes | LG K40 has 64-bit architecture. |
| Graphics System (GPU) | - | PowerVR GE8320 |
| MEMORY | CAT S31 | LG K40 |
|---|
| RAM | 2 GB | 2 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 32 GB | LG K40 has more internal memory than CAT S31. |
| User Memory | - | 20.2 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 2 TB |
| CAMERA | CAT S31 | LG K40 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution | 8 Megapixel | 16 Megapixel | LG K40 has better camera resolution than CAT S31. |
| Sensor Size | - | 1/3" | |
| Lens Aperture | - | F/2.0 | |
| Pixel Size | - | 1 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 1280 x 720 (720p) at 120 fps | - | |
| Camera Features (Functions) | - | Phase Detect Auto-Focus (PDAF), GIF Creation, 8 different scenes |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 2 Megapixel | 8 Megapixel | LG K40 has better front camera resolution than CAT S31. |
| Sensor Size (Front) | - | 1/4" | |
| Lens Aperture (Front) | - | F/2.0 | |
| Pixel Size (Front) | - | 1.12 μm | |
| Focus Adjustment | Focus free | - | |
| Camera Modes (Front) | - | Portrait mode | |
| Light Source (Front) | - | LED flash |
| BATTERY AND CHARGING | CAT S31 | LG K40 |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 3000 mAh | CAT S31 has larger battery capacity than LG K40. |
|---|---|---|---|
| Standby Time | 912 hours | 100 hours | CAT S31 has longer standby time than LG K40. |
| Talk Time | 1800 minutes | 480 minutes | CAT S31 has longer battery life when making calls than LG K40. |
| Run Time Details | Talk: up to 1800 min Standby: up to 912 hrs |
Talk: up to 480 min Standby: up to 100 hrs |
|
| Battery Technology | Lithium Ion | Lithium Ion |
| CELLULAR | CAT S31 | LG K40 |
|---|
| 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 | Android 8.1 Oreo | |
| Intelligent Assistant | - | Google Assistant | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS |
| COMMUNICATIONS | CAT S31 | LG K40 |
|---|
| 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 | - | |
| 3G UMTS Frequency | 2100, 1900, 850, 900 | - | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 5, Band 7, Band 8, Band 20 | Band 1, Band 3, Band 7, Band 8, Band 20, Band 38 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD | FDD 2100, FDD 1800+, FDD 2600, FDD 900, FDD 800 DD, TDD 2600 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.1 | Bluetooth 5.0 LE | |
| NFC | - | Yes | LG K40 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | CAT S31 | LG K40 |
|---|
| Supported Digital Audio Standards | - | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | |
|---|---|---|---|
| Sound Enhancements | - | DTS: X 3D Premium Sound |
| FEATURES | CAT S31 | LG K40 |
|---|
| 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 | Ambient light sensor, proximity sensor | |
| Security Devices | - | Face recognition, fingerprint reader | |
| Additional Phone Features | Dual microphones, Wet Touchscreen Operation, Glove Touchscreen Operation | Google Lens, Google Assistant Key, AI Cam | |
| Android Enterprise Recommended | Yes | - |
| OTHERS | CAT S31 | LG K40 |
|---|
| Included Accessories | Power adapter | Power adapter | |
|---|---|---|---|
| Compliant Standards | MIL-STD 810G, IP68 | MIL-STD 810G | |
| 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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