Introduction
The STRONG 4G LTE Router 350 is designed to provide reliable and fast internet connectivity, particularly in areas with limited fixed-line internet access or for mobile applications such as camper vans and holiday homes. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your router to ensure optimal performance.
Product Overview
Key Features
- Improved Internet Connection: The 4G LTE Router 350 offers a solution for slow internet connections. Simply insert a SIM card to achieve download speeds of up to 150 Mbit/s.
- Mobile Internet Access: Ideal for use in holiday homes or camper vans, this router provides fast and reliable mobile connectivity wherever you are.
- Easy Internet Sharing: Share your high-speed internet connection via Wi-Fi and connect devices such as PCs, smart TVs, or game consoles effortlessly using the integrated Ethernet ports.
- Enhanced 4G LTE Reception: Equipped with two external fixed antennas to ensure improved 4G LTE signal reception, maximizing your mobile network performance.
- High Security and Control: Your wireless connection is secured with WPA/WPA2 encryption. PIN control allows you to manage your 4G LTE connection.
Package Contents
Please verify that all items are present in your package:
- 1 x STRONG 4G LTE Router 350
- 1 x Micro to Standard SIM Adapter
- 1 x RJ45 Ethernet Cable
- 1 x External Power Adapter
- 1 x Nano to Standard SIM Adapter
- 1 x Quick Installation Guide
- 1 x Warranty Card
Setup
1. Insert SIM Card
Locate the SIM card slot on the router. Insert your activated SIM card into the slot. Ensure the SIM card is correctly oriented according to the diagram on the device or in the Quick Installation Guide. The router supports all standard SIM card formats using the provided adapters.

Back view of the STRONG 4G LTE Router 350, highlighting the SIM card slot and Ethernet ports.
2. Connect Antennas
Attach the two external antennas to the designated connectors on the back of the router. Adjust their position for optimal signal reception.
3. Power On
Connect the external power adapter to the router's power input and then plug it into a power outlet. The router will automatically power on. Wait for the LED indicators on the front panel to stabilize, indicating a successful connection.

Front view of the STRONG 4G LTE Router 350, showing the LED indicators for status.
4. Initial Configuration (Optional)
For advanced settings or to change default Wi-Fi credentials, connect a device (PC, smartphone) to the router via Wi-Fi or Ethernet. Access the router's web interface by typing the default IP address (usually found on a sticker on the router or in the Quick Installation Guide) into a web browser. Log in with the default username and password.

Diagram showing how to connect devices like smartphones, laptops, smart TVs, and game consoles to the router.
Operating Instructions
Connecting Devices via Wi-Fi
To connect devices wirelessly, search for the router's Wi-Fi network name (SSID) on your device. The default SSID and Wi-Fi password are typically printed on a sticker on the bottom of the router. Select the network and enter the password to connect.
Connecting Devices via Ethernet
For wired connections, use an RJ45 Ethernet cable to connect your device (e.g., PC, Smart TV, game console) to one of the LAN ports on the back of the router.
PIN Control
The router features PIN control for managing your 4G LTE connection. You can configure PIN settings through the router's web interface to enhance security.
WPS Function
The router supports Wi-Fi Protected Setup (WPS) for easy connection of compatible devices. Press the WPS button on the side of the router and then activate WPS on your device within two minutes to establish a connection without entering the password.

Side view of the STRONG 4G LTE Router 350, indicating the WPS and Reset buttons.
Maintenance
To ensure the longevity and optimal performance of your STRONG 4G LTE Router 350, consider the following maintenance tips:
- Firmware Updates: Regularly check for and install firmware updates from the manufacturer's website. Firmware updates often include security patches and performance improvements.
- Cleaning: Keep the router clean and free from dust. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or abrasive materials.
- Ventilation: Ensure the router is placed in a well-ventilated area to prevent overheating. Do not cover ventilation openings.
- Resetting: If you experience persistent issues, a factory reset might resolve them. Use a paperclip to press and hold the 'Reset' button (usually located near the WPS button) for about 10 seconds while the router is powered on. This will restore the router to its factory default settings.
Troubleshooting
If you encounter problems with your router, refer to the following common issues and solutions:
- No Internet Connection:
- Check if the SIM card is properly inserted and activated.
- Verify that the 4G LTE signal indicator is lit and stable.
- Ensure your device is correctly connected to the router via Wi-Fi or Ethernet.
- Restart the router by unplugging and replugging the power adapter.
- Slow Internet Speed:
- Adjust the external antennas for better 4G LTE signal reception.
- Move the router to a location with better signal strength.
- Reduce the number of connected devices or active downloads.
- Check with your mobile network provider for any network issues in your area.
- Cannot Connect to Wi-Fi:
- Ensure the Wi-Fi LED indicator on the router is on.
- Double-check the Wi-Fi password.
- Try connecting using the WPS button.
- Perform a factory reset if you have forgotten the Wi-Fi password.
Specifications
| Feature | Detail |
|---|---|
| Model Name | Router 4G LTE 300 (4GROUTER350) |
| Product Dimensions (L x W x H) | 40 x 130 x 184 mm |
| Weight | 320 g |
| Manufacturer | STRONG |
| Special Features | Internet security, LED indicator |
| Frequency Band Class | Single-band (2.4 GHz) |
| Wireless Communication Standard | 802.11b, 802.11g, 802.11n |
| Compatible Devices | Smartphone, Tablet |
| Recommended Uses | Outdoor/travel, mobile internet |
| Connectivity Technology | LTE |
| Color | White |
| Antenna Type | External Fixed Antennas |
| Operating System | RouterOS |
| Security Protocol | WPA/WPA2 |
| Number of Ports | 4 (LAN) |
| Control Method | App |
| 4G LTE Download Speed | Up to 150 Mbps |
| Wi-Fi Data Transmission Speed | Up to 300 Mbps (802.11n) |
| Voltage | 12 Volt |
| Router Firewall Security Level | Good firewall security |
| Wi-Fi Generation | Wi-Fi 4 |
| Internet Connectivity | Yes |
| Modem Compatibility | Yes |
| Connection Protocol | LTE |
| Coverage | Large area |
Warranty and Support
The STRONG 4G LTE Router 350 comes with a standard manufacturer's warranty. For detailed warranty information, please refer to the warranty card included in your package or visit the official STRONG website. For technical support, product registration, or to download the latest drivers and firmware, please visit the STRONG support portal or contact their customer service.
Online Resources: