Introduction
Welcome to your Yoidesu 4G 5G WiFi Mobile Hotspot. This manual provides detailed instructions for setting up, operating, and maintaining your device. Please read this manual thoroughly before use to ensure optimal performance and safety.
Important Safety Instructions
- Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping or subjecting the device to strong impacts.
- Do not attempt to disassemble or modify the device. This will void the warranty.
- Use only the provided or approved charging cable and adapter.
- Keep the device away from water and other liquids.
- Dispose of batteries according to local regulations. Do not incinerate.
Package Contents
Verify that all items are present in your package:
- Yoidesu 4G 5G WiFi Mobile Hotspot Device
- 2100mAh Rechargeable Battery
- USB Type-C Charging Cable
- Instruction Manual (this document)

The Yoidesu Mobile Hotspot device is shown with its included USB-C charging cable, ready for power connection.
Product Overview
Familiarize yourself with the components of your mobile hotspot:
- LED Display: Shows signal strength, battery status, Wi-Fi name (SSID), password (KEY), and connected devices.
- Power Button: Used to turn the device on/off.
- SIM Card Slot: For inserting your 4G or 5G SIM card.
- USB Type-C Port: For charging the device.

A close-up view of the Yoidesu Mobile Hotspot, highlighting its Type-C charging port, support for 4G/5G high-speed internet, and its integrated 2100mAh battery.
Setup
1. Insert SIM Card and Battery
- Gently remove the back cover of the hotspot device.
- Locate the SIM card slot. Insert your activated 4G or 5G SIM card into the slot with the gold contacts facing down and the notched corner aligned correctly.
- Insert the 2100mAh rechargeable battery into its compartment, ensuring the contacts align.
- Replace the back cover until it clicks securely into place.

An internal view of the Yoidesu Mobile Hotspot, with the back cover and battery removed, showing the designated slot for a SIM card.
2. Power On
Press and hold the Power Button for a few seconds until the LED display illuminates. The device will begin searching for a network signal.
3. Initial Configuration
The Yoidesu Mobile Hotspot is designed for plug-and-play operation. Once powered on and a valid SIM card is inserted, it will automatically connect to the available network. No complex software installation or configuration is typically required.
Operating Instructions
Connecting Devices to the Hotspot
- Ensure your Yoidesu Mobile Hotspot is powered on and has an active network connection (indicated by the signal icon on the LED display).
- On your Wi-Fi enabled device (smartphone, tablet, laptop), open the Wi-Fi settings.
- Scan for available Wi-Fi networks. You will see a network name (SSID) displayed on your hotspot's LED screen (e.g., "SSID:4G-MIFI-149").
- Select this network from the list.
- When prompted, enter the Wi-Fi password (KEY) shown on your hotspot's LED screen (e.g., "KEY:1234567890").
- Your device should now be connected to the internet via the hotspot. The hotspot supports up to 10 connected devices simultaneously.

This image illustrates the Yoidesu Mobile Hotspot's ability to connect up to 10 devices simultaneously, including various types of computers and mobile phones, ensuring a stable connection.
Monitoring Device Status
The LED display provides real-time information:
- Signal Strength: Bars indicate the strength of the 4G/5G network signal.
- Battery Status: An icon shows the current battery charge level.
- Wi-Fi Status: Indicates if Wi-Fi is active and if devices are connected.
- Data Usage: May display current data usage (refer to device screen for specifics).
Charging the Device
To charge the hotspot, connect the provided USB Type-C cable to the device's charging port and the other end to a USB power adapter (not included) or a computer's USB port. The battery icon on the LED display will indicate charging status.

This image shows the Yoidesu Mobile Hotspot alongside a visual representation of its 2100mAh battery, indicating its capacity for over 10 hours of continuous operation.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or aerosols.
- Storage: When not in use for extended periods, store the device in a cool, dry place.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in active use.
Troubleshooting
| Problem | Solution |
|---|---|
| No internet connection | Ensure your SIM card is active and has data. Check for network signal strength on the LED display. Try restarting the device. |
| Cannot connect devices to Wi-Fi | Verify the Wi-Fi password (KEY) on the hotspot's LED display. Ensure the hotspot's Wi-Fi is enabled. Check if the maximum number of devices (10) is already connected. |
| Battery not charging | Ensure the USB Type-C cable is securely connected to both the hotspot and the power source. Try a different USB port or power adapter. Check if the charging cable is damaged. |
| Slow internet speeds | Check the network signal strength. Move to an area with better signal. Reduce the number of connected devices. Your data plan might be throttled or exhausted. |
| Device does not power on | Ensure the battery is correctly inserted and charged. Connect the device to a charger and try powering it on again. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Yoidesu |
| Model Number | B0FDF98WYZ |
| Item Weight | 3.84 ounces |
| Package Dimensions | 4.33 x 2.76 x 1.18 inches |
| Battery Capacity | 2100mAh |
| Max Internet Speed | Up to 300Mbps (LTE Cat4) |
| Supported Network Bands | B1, B3, B5, B40 |
| Max Connected Devices | 10 devices |
| Charging Port | USB Type-C |
Warranty and Support
Warranty Information
Your Yoidesu 4G 5G WiFi Mobile Hotspot is covered by a limited warranty against defects in materials and workmanship. The specific duration and terms of the warranty may vary by region. Please retain your proof of purchase for warranty claims.
Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please contact Yoidesu customer support. You can typically find contact information on the official Yoidesu website or through the retailer where you purchased the product.
Visit the Yoidesu Store on Amazon for more information.