1. Introduction
The Cudy MF4 is a portable 4G LTE WiFi Hotspot designed to provide internet access on the go. It features a rechargeable 2000 mAh battery, a Micro USB port for charging, and a SIM card slot compatible with various operators. This device supports FDD and TDD LTE networks, offering speeds up to 150 Mbps. It allows connection for up to 10 devices simultaneously and provides approximately 7 hours of battery life. The MF4 is fully unlocked, enabling use with any network provider.
2. Package Contents
Please check the package for the following items:
- Cudy MF4 Mobile 4G LTE WiFi Hotspot
- Rechargeable Battery (2000 mAh)
- Micro USB Charging Cable
- Quick Installation Guide

Image: The Cudy MF4 Mobile 4G LTE WiFi Hotspot, its rechargeable battery, a Micro USB charging cable, and the quick installation guide, laid out next to the product box.
3. Product Overview
The Cudy MF4 features a compact design with indicator lights for signal strength, Wi-Fi status, and power. It includes a Micro USB port for charging and a removable back cover to access the SIM card slot and battery compartment.
3.1 Device Layout
- Power Button: Press and hold to turn the device on or off.
- Micro USB Port: For charging the device.
- SIM Card Slot: Insert your standard SIM card here.
- Battery Compartment: Houses the rechargeable battery.
3.2 LED Indicators
- Signal Indicator: Displays the strength of the 4G LTE signal.
- Wi-Fi Indicator: Shows the status of the Wi-Fi network.
- Power Indicator: Indicates battery level and charging status.

Image: An angled view of the Cudy MF4 hotspot, highlighting its sleek design and the three LED indicators for signal, Wi-Fi, and power.
4. Setup Instructions
Follow these steps to set up your Cudy MF4 hotspot:
4.1 Installing the SIM Card and Battery
- Remove the back cover of the device.
- Insert your standard-sized SIM card into the SIM card slot with the gold contacts facing down and the notched corner aligned correctly.
- Insert the rechargeable battery into the battery compartment.
- Replace the back cover.

Image: The Cudy MF4 device with its back cover removed, revealing the SIM card slot and the battery compartment. The battery is shown separately, ready for installation.
4.2 Charging the Device
- Connect the Micro USB cable to the device's Micro USB port.
- Connect the other end of the USB cable to a USB power adapter (not included) or a computer's USB port.
- The power indicator will show charging status. Charge the device fully before first use.
4.3 Powering On and Connecting
- Press and hold the Power button until the indicators light up.
- Wait for the device to establish a 4G LTE connection (Signal Indicator will be solid).
- On your Wi-Fi enabled device (smartphone, laptop, tablet), search for available Wi-Fi networks.
- Select the network name (SSID) displayed on the MF4 device or its packaging.
- Enter the Wi-Fi password (Key) provided on the MF4 device or its packaging.
5. Operating Instructions
5.1 Connecting Multiple Devices
The Cudy MF4 can support up to 10 devices simultaneously. Simply connect each device using the Wi-Fi network name and password as described in the setup section.

Image: An illustration showing the Cudy MF4 hotspot wirelessly connected to several laptops, tablets, and smartphones, demonstrating its multi-device capability.
5.2 Accessing the Web Management Interface
To configure advanced settings, such as changing the Wi-Fi name or password, or checking data usage:
- Ensure your device is connected to the MF4's Wi-Fi network.
- Open a web browser and enter the default IP address (usually
192.168.0.1or192.168.1.1) found in the Quick Installation Guide or on the device label. - Enter the default username and password (also found in the guide or on the device).
- You can now access and modify various settings.
5.3 Powering Off
To turn off the device, press and hold the Power button until the indicators turn off.
6. Maintenance
6.1 Battery Care
- Avoid exposing the battery to extreme temperatures.
- Charge the battery regularly, even if not in use, to maintain its lifespan.
- If the device will not be used for an extended period, store it with a partial charge (around 50%).

Image: The Cudy MF4 hotspot with a circular arrow and the text "7 Hours", illustrating its battery endurance.
6.2 Cleaning
Use a soft, dry cloth to clean the device. Avoid using liquid cleaners or abrasive materials.
6.3 Firmware Updates
Periodically check the Cudy official website for available firmware updates to ensure optimal performance and security. Instructions for updating firmware will be provided on the website.
7. Troubleshooting
If you encounter issues with your Cudy MF4, refer to the following common problems and solutions:
| Problem | Possible Solution |
|---|---|
| No 4G LTE signal |
|
| Cannot connect to Wi-Fi |
|
| Slow internet speed |
|
| Battery drains quickly |
|
| Device does not retain PIN code after restart |
|
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Cudy |
| Model Name | MF4 |
| Model Number | 24135750 |
| Operating System | Cudy Firmware |
| Connectivity Technology | Wi-Fi, USB |
| Special Features | Portable, Rechargeable |
| Compatible Devices | Game console, Laptop, Smartphone, Tablet |
| Battery | 2000 mAh Lithium-ion (included) |
| Wireless Communication Standard | 802.11b, 802.11g, 802.11n |
| Frequency Band Class | Single-band |
| Recommended Use | Home, Mobile |
| Manufacturer | Cudy |
| Country of Origin | Spain |
9. Warranty and Support
9.1 Warranty Information
The Cudy MF4 Mobile 4G LTE WiFi Hotspot comes with a three-year manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims.
9.2 Customer Support
For technical support, troubleshooting assistance, or warranty inquiries, please visit the official Cudy website or contact their customer service through the contact information provided on their website or in your Quick Installation Guide.
10. Additional Resources
For more information, including frequently asked questions and advanced configurations, please visit the Cudy official website.