1. Introduction
This manual provides essential instructions for the safe and efficient use of your ALLOYSEED 4G/5G Mobile Hotspot WIFI Router. Please read this manual thoroughly before operating the device and retain it for future reference.
The ALLOYSEED MF687 is a compact and portable 4G LTE wireless internet router designed to provide high-speed internet access on the go. It features a 3000mAh battery, Type-C interface, and supports connectivity for up to 10 users simultaneously.
2. Safety Warnings and Precautions
▲ WARNING: Read all instructions carefully before using this product. Keep this manual for future reference.
- Intended Use: Do not use the product for any purpose other than its intended use. Misuse may cause injury, damage to the product, or other hazards.
- Children's Safety: Keep this product out of the reach of children under 3 years, unless under direct adult supervision. Small parts may cause a choking hazard. Ensure children remain clear of the operational area during use.
- Disassembly: Do not disassemble, modify, or repair the product by yourself. Improper operation may cause electric shock, fire, or product failure. Contact professional maintenance personnel if needed. Unauthorized disassembly or repair by non-professionals is strictly prohibited.
- Power Safety: Before use, ensure the power outlet is intact and undamaged.
- Dropping: Avoid dropping the product from elevated positions to prevent damage.
- Moisture: Do not use the product outdoors during rain or in high-humidity environments. Avoid contact with liquids to prevent electric shock.
- Power Supply: Unplug the power supply when not in use or during cleaning.
- Environmental Disposal: Dispose of the product and its packaging in accordance with EU WEEE (Waste Electrical and Electronic Equipment) Directive 2012/19/EU and RoHS Directive 2011/65/EU. Do not discard as household waste.
3. Package Contents
Please verify that all items are included and undamaged upon unpacking:
- 1 x Mobile WiFi Router (Model MF687)
- 1 x Battery (3000mAh)
- 1 x Data Cable (Type-C)
- 1 x Instruction Manual
4. Setup
4.1. Unpacking Inspection
After opening the package, verify that the product is complete and undamaged. If any components are missing or damaged, please contact customer support.
4.2. SIM Card Installation
- Locate the SIM card slot on the device.
- Insert a standard SIM card (not included) into the slot. Ensure the SIM card is correctly oriented as indicated by the device.
- Close the SIM card slot cover securely.
4.3. Battery Installation
- Open the battery compartment cover on the back of the router.
- Insert the provided 3000mAh lithium battery, ensuring the contacts align correctly.
- Close the battery compartment cover.
4.4. Initial Charging
Before first use, fully charge the device using the provided Type-C data cable and a compatible power adapter. The device can operate for up to 8 hours continuously on a full charge and has a standby time of over 50 hours.
5. Operating Instructions
5.1. Power On/Off
- Power On: Press and hold the power button until the device screen lights up and the indicators show activity.
- Power Off: Press and hold the power button until the device powers down.
5.2. Connecting Devices
The router supports connecting 8-10 devices simultaneously.
- Once the router is powered on, wait for it to establish a 4G network connection. The screen will display network status (e.g., 4G, LTE).
- On your device (smartphone, laptop, tablet, etc.), search for available Wi-Fi networks.
- Select the Wi-Fi network name (SSID) displayed on the router's screen (e.g., "SSID: 4G-MIFI-027B").
- Enter the Wi-Fi password (KEY) displayed on the router's screen (e.g., "KEY: 1234567890").
- Your device should now be connected to the internet.
5.3. Monitoring Device Status
The router's screen provides real-time information including:
- Signal strength
- Network type (4G, LTE)
- Battery level
- Connected users
- SSID and Password
6. Cleaning and Maintenance
6.1. Cleaning
Wipe off surface dust or stains promptly after use with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
6.2. Storage
When not in use, store the product in a dry, well-ventilated location, away from direct sunlight and extreme temperatures.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No internet connection | SIM card not inserted correctly; No network signal; Incorrect APN settings; Data plan expired. | Reinsert SIM card; Move to an area with better signal; Check APN settings (refer to your SIM card provider); Recharge data plan. |
| Device not powering on | Low battery; Faulty battery; Power button issue. | Charge the device; Check battery installation; Contact support if battery or power button is faulty. |
| Slow internet speed | Weak signal; Too many connected devices; Network congestion. | Move to an area with stronger signal; Disconnect some devices; Try again later during off-peak hours. |
| Cannot connect to Wi-Fi | Incorrect password; Device too far from router. | Verify Wi-Fi password; Move closer to the router. |
8. Specifications
| Feature | Description |
|---|---|
| Model | MF687 |
| Color | White |
| Type | Wireless |
| Wireless Transmission Speed | Up to 150Mbps |
| Battery | 3000mAh Lithium Battery |
| Standby Time | Over 50 hours |
| Continuous Operation Time | Up to 8 hours |
| Interface | Type-C |
| Multi-User Support | 8-10 devices simultaneously |
| Product Size | 98 x 59 x 18 mm (3.86 x 2.32 x 0.71 inches) |
| Gross Weight (Asian Version) | 145g |
| Gross Weight (Eurasian Version) | 155g |
9. Network Compatibility
The ALLOYSEED MF687 router is available in two versions, each supporting different frequency bands:
- Asian Version Frequency Band: B1/3/5/8/38/39/40/41
- Eurasian Version Frequency Band: B1/3/5/7/8/20/38/40/41
Important Note:
- This device is 4G network compatible with 5G SIM cards. This means it will operate on 4G networks even if you insert a 5G SIM card; it does not provide 5G network speeds.
- Before purchasing, it is crucial to check the frequency bands used by your local network operators to ensure compatibility. You can use the following resources:
- Global frequency band checker: frequencycheck.com/countries
- Network bands by country: gsmarena.com/network-bands.php3 (replace 'IRAN' with your country)
- List of LTE networks: en.wikipedia.org/wiki/List_of_LTE_networks
10. User Tips
- Check Frequency Bands: Always confirm that the router's frequency bands are compatible with your local network provider before use to ensure optimal performance.
- 4G/5G SIM Clarification: Remember that while the device is compatible with 5G SIM cards, it will operate on 4G networks, not 5G speeds.
- Portable Use: Its compact design makes it ideal for car users, business travelers, and outdoor adventurers.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official product documentation or contact the seller directly.
A digital version of this user manual is available in PDF format: User Manual (PDF).





