CAT S41 Rugged Smartphone User Manual
Model: S41 (CS41-DAB-EUR-KN)
Introduction
This manual provides essential instructions for setting up, operating, maintaining, and troubleshooting your CAT S41 Rugged Smartphone. The CAT S41 is designed for durability, featuring IP68 water and dust resistance, and a robust construction suitable for challenging environments. It also includes a Battery Share feature for charging other devices.
Please read this manual thoroughly to ensure proper use and to maximize the performance and longevity of your device.
1. Setup
1.1 Unboxing and Initial Inspection
Upon opening the retail box, verify that all components are present and undamaged. The box typically contains:
- CAT S41 Rugged Smartphone
- Quick Start Guide
- Warranty Card
- Mains Charger and Micro USB Cable
- Battery Share Cable
- Screen Protector (pre-applied or included separately)
Note: The screen protector may be pre-applied or included as a separate accessory. Exercise care when handling the screen to avoid accidental removal of the actual screen protector if it is already installed.
1.2 Inserting SIM and MicroSD Cards
The CAT S41 supports Dual-SIM functionality and a MicroSD card for expanded storage.
- Locate the SIM/MicroSD card tray on the side of the device.
- Use the provided SIM ejector tool (if applicable) or a small, pointed object to open the tray.
- Carefully place your SIM card(s) and MicroSD card into the designated slots, ensuring correct orientation. Refer to the diagram on the tray for guidance.
- Gently push the tray back into the device until it is flush with the phone's body. Ensure the tray is securely sealed to maintain water and dust resistance.

Image: Multiple views of the CAT S41, showing the location of the SIM and MicroSD card tray on the side.
1.3 Charging the Battery
The CAT S41 is equipped with a 5000 mAh battery. For initial use, it is recommended to fully charge the device.
- Connect the micro USB cable to the charging port on your phone.
- Connect the other end of the cable to the mains charger and plug it into a power outlet.
- The charging indicator on the screen will show the charging status.
Note: Use only CAT-approved chargers and cables to prevent damage to the device and to ensure optimal charging performance.
1.4 Powering On/Off
- To power on: Press and hold the Power button located on the side of the device until the CAT logo appears.
- To power off: Press and hold the Power button, then select "Power off" from the options on the screen.
2. Operating the Device
2.1 Basic Navigation
The CAT S41 runs on Android 7.0 (Nougat). Navigate the interface using touch gestures and the physical navigation buttons at the bottom of the screen.

Image: Front view of the CAT S41 displaying the Android home screen with various app icons.
2.2 Making Calls and Sending Messages
- Calls: Tap the Phone icon, enter the number, and tap the call button. For dual-SIM models, you may be prompted to select which SIM to use.
- Messages: Tap the Messages icon, start a new conversation, enter the recipient and your message.
2.3 Utilizing Rugged Features
The CAT S41 is built to withstand harsh conditions:
- Waterproof (IP68): The device is resistant to submersion in water up to 1.5 meters for 30 minutes. Ensure all ports and covers are securely closed before exposure to water.
- Dustproof (IP68): The phone is fully protected against dust ingress.
- Drop Resistance: Designed to withstand drops onto concrete from up to 1.8 meters.

Image: The CAT S41 smartphone resting on rocks near a body of water, illustrating its waterproof capabilities.

Image: The CAT S41 smartphone lying on a wooden workbench covered with sawdust and construction tools, highlighting its robust design for demanding environments.
2.4 Battery Share Feature
The CAT S41 can act as a power bank to charge other devices using its Battery Share feature.
- Connect the Battery Share cable to your CAT S41's micro USB port.
- Connect the other end of the Battery Share cable to the device you wish to charge.
- Follow the on-screen prompts on your CAT S41 to initiate charging.

Image: The CAT S41 smartphone placed in the interior of a vehicle, illuminated by a red light, suggesting its use in various settings or its charging capabilities.
3. Maintenance
3.1 Cleaning Your Device
To maintain the device's performance and appearance:
- Wipe the screen and body with a soft, damp cloth.
- For stubborn dirt, use a mild soap solution. Avoid harsh chemicals or abrasive materials.
- Ensure all ports are dry before charging or connecting accessories after cleaning.
3.2 Software Updates
Regularly check for and install software updates to ensure your device has the latest features, security patches, and performance improvements.
- Go to Settings > About phone > System updates.
- Follow the on-screen instructions to download and install any available updates.
4. Troubleshooting
4.1 Network Connectivity Issues
If you experience issues with calls, messages, or mobile data:
- Check SIM Card: Ensure your SIM card is correctly inserted and activated with your network provider.
- Network Compatibility: This device is designed for GSM networks (e.g., AT&T, T-Mobile in the USA). It is not compatible with CDMA networks (e.g., Verizon, Sprint, US Cellular). Verify your carrier uses GSM technology.
- Restart Device: A simple restart can often resolve temporary network glitches.
- Network Settings: Go to Settings > Network & Internet > Mobile network and ensure preferred network type and access point names (APNs) are correctly configured for your carrier.
4.2 Battery Draining Quickly
- Background Apps: Close unused applications running in the background.
- Screen Brightness: Reduce screen brightness or enable adaptive brightness.
- Wi-Fi/Bluetooth/GPS: Turn off these features when not in use.
- Battery Usage: Check Settings > Battery to identify apps consuming the most power.
4.3 Device Unresponsive
If the device becomes unresponsive, perform a force restart:
- Press and hold the Power button for approximately 10-15 seconds until the device restarts.
5. Specifications
| Feature | Detail |
|---|---|
| Model Name | S41 |
| Item Model Number | CS41-DAB-EUR-KN |
| Operating System | Android 7.0 (Nougat) |
| CPU Speed | Octa-core 2.3 GHz |
| Display Size | 5.0 Inches |
| Resolution | 1080 x 1920 pixels |
| Screen Protection | Corning Gorilla Glass 5 |
| RAM | 3 GB |
| Internal Storage | 32 GB |
| Expandable Storage | MicroSD Card slot, up to 256GB |
| Main Camera | 13 MP |
| Front Camera | 8 MP |
| Battery Capacity | 5000 mAh Li-Ion (Non-removable) |
| Stand-by Time | Up to 1056h (3G) |
| Talk Time | Up to 38h (3G) |
| Ruggedness | IP68 Dust/Water Resistant (up to 1.5m for 30 min), Drop-to-concrete resistance (up to 1.8m) |
| Dimensions | 2.95 x 0.51 x 5.98 inches (75 x 12.9 x 152 mm) |
| Weight | 7.7 ounces (218 grams) |
| Network Compatibility | GSM Only (2G, 3G, 4G/LTE bands as specified in product details) |
6. Warranty and Support
Your CAT S41 smartphone comes with a manufacturer's warranty. Please refer to the Warranty Card included in your product packaging for specific terms, conditions, and duration of the warranty.
For technical support, service, or further inquiries, please visit the official CAT Phones support website or contact their customer service. Keep your proof of purchase and the device's IMEI number (found on the retail box or by dialing *#06#) handy when seeking support.
Online Resources:
- Official CAT Phones Website: www.catphones.com
- Support Page: Refer to the website for specific support sections.





