How to Share Internet from a Modem to a Router via Wi-Fi: 3 Working Methods

You find yourself in a situation where the Internet is connected via a USB modem (for example, Huawei E3372 or ZTE MF823), but need to distribute it to several devices via a router? Or do you want to use 4G modem as the main source of Internet For a home network? This problem is solvable, but it requires proper configuration—otherwise, the router simply won't see the modem or be able to obtain an IP address.

In this article we will look at three proven methods connections: via USB port of the router, through bridge mode (WISP) and with the help of intermediate device (for example, a laptop). You'll also learn which routers support direct modem access, how to bypass carrier blocking, and what to do if your connection keeps dropping. Important: Not all modems are compatible with routers—some require firmware or manual entry of AT commands.

Before you begin, please check:

• 🔌 Does your router have USB port (usually blue)?
• 📶 Does the modem support mode NDIS or ECM (this can be found in the characteristics or through the command AT^NDISDUP?)?
• 🔒 Is the modem tied to a specific device (for example, MTS 827F or Beeline E3370)?

If you have any doubts about any of the points, skip the first method and move on to alternative options.

1. Direct connection of the modem to the router via USB

The most obvious way is to connect the modem directly to the router if it has a USB port. However, Not all routers support this feature.For example, budget models TP-Link TL-WR840N or D-Link DIR-300 can't work with 3G/4G modems, but ASUS RT-AC68U, Keenetic Ultra or Zyxel Keenetic Giga will cope without problems.

To check compatibility:

1. Connect the modem to the USB port of the router.
2. Go to the router's web interface (usually at 192.168.1.1 or 192.168.0.1).
3. Go to the section Internet → USB modem (the name may differ).
4. If the modem is detected, select it from the list and press Connect.

⚠️ Attention: If the modem was previously used with a connection to a computer (for example, through a program MegaFon Internet or Yota Access), the router may not detect it. In this case, you need to reset the modem to factory settings using the command AT^RESET or a special utility (for example, DC-Unlocker).

Disconnect the modem from the computer | Reset the modem settings (if connected) | Check the router's support for USB modems | Update the router firmware (if necessary)

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2. Configuring the router in WISP mode (wireless bridge)

If your router does not have a USB port or does not support direct operation with the modem, you can use intermediate device - for example, a smartphone or laptop that will distribute the Internet via Wi-Fi, and the router will connect to this network in mode WISP (Wireless Internet Service Provider).

Algorithm of actions:

• 📱 Step 1. Connect the modem to your smartphone/laptop and turn it on modem mode (on Android: Settings → Network & Internet → Access Point).
• 🔄 Step 2. Find the section in your router settings Internet → WAN and select the connection type Dynamic IP (DHCP).
• 📡 Step 3. Turn on the mode WISP or Repeat (the name depends on the model) and connect to the access point created by the smartphone.

The advantage of this method is no need for USB ports, and the disadvantage is an additional link in the chain, which can reduce speed. Furthermore, if the smartphone runs out of battery, the internet will be lost.

3. Using special software to unlock the modem

Some modems (especially from operators MTS, Beeline or Megaphone) block access to routers by binding themselves to the first connected device. In this case, modem firmware or using utilities like DC-Unlocker, Huawei Modem Unlocker.

Instructions for Huawei E3372:

1. Download and install DC-Unlocker (version 2.0.0 or later).
2. Connect the modem to the computer and run the program.
3. Enter the command:

   AT^NVWREX=8268,0,12,1,0,0,0,2,0,0,0,A,0,0,0

4. Reboot the modem and connect it to the router.

⚠️ Warning: Incorrect firmware or AT commands may disable the modem permanentlyIf you're unsure about what you're doing, it's best to consult a specialist or use alternative connection methods.

4. Alternative connection schemes (for complex cases)

If none of the above methods work, consider these options:

• 🖥️ Using a laptop as an intermediate link:
  1. Connect the modem to the laptop.
  2. Turn on Internet access sharing in the network adapter settings (Windows: Control Panel → Network → Change adapter settings).
  3. Connect your laptop to the router via Ethernet (cable to the WAN port of the router).

# Example script for automatic reconnection (OpenWRT)
/etc/init.d/cron restart
cru a ping_check "/5    * ping -c 1 8.8.8.8 || ifdown wan && ifup wan"