How to access the internet via a modem: a complete guide to setting up Wi-Fi

Internet access via a modem is a universal solution for areas where there is no wired connection or where the cable provider is unstable. Modern 3G/4G/5G modems They allow you to not only connect to a mobile network but also distribute Wi-Fi to multiple devices simultaneously, turning them into a fully-fledged router. However, many users face difficulties, from choosing the right equipment to configuring network settings.

In this article, we'll cover all the steps, from purchasing the right modem to fine-tuning Wi-Fi networks, eliminating common errors and optimizing speed. We will pay special attention SIM card compatibility with different network generations (4G vs 5G), as this issue often causes slow internet. This material is relevant for modems. Huawei, ZTE, TP-Link and other popular brands, as well as for USB modems connected to computers.

1. Choosing a modem: which one is suitable for Wi-Fi reception

The first step is to decide on the device type. There are three main categories of modems, each serving a specific purpose:

• 📶 USB modems — compact devices that connect to a laptop or PC via a USB port. They are suitable for standalone use, but cannot distribute Wi-Fi without additional software (e.g., Connectify or mHotspot). Popular models: Huawei E3372, ZTE MF823.
• 🔄 4G/5G routers with a SIM card — fully-fledged devices that receive mobile internet and distribute it via Wi-Fi. Ideal for home or office use. Examples: TP-Link M7350, Huawei B535.
• 🖥️ External modems with antennas — for areas with weak signal. Can be connected to a router via a port. RJ-45 or USB. For example, MikroTik LHG LTE6.

Key parameters when choosing:

• 🔋 Frequency support your operator (check on the provider's website). For example, MTS And Beeline In Russia, ranges are actively used 800 MHz (B20), 1800 MHz (B3) And 2600 MHz (B7).
• 📊 Maximum speed: for 4G it is up to 150 Mbps, for 5G - up to 1–2 Gbps (but the actual speed depends on network congestion).
• 📡 Availability of connectors for external antennas (if the signal is weak). Look for models with ports TS-9 or SMA.

⚠️ Attention: If you are purchasing a modem for a specific operator (for example, MegaFon M150-2), check if it's unlocked for other SIM cards. Many devices are tied to a provider and require unlocking.

Before purchasing, check the network coverage in your region on operator maps. For example, Tele2 And Iotas 4G/5G zones can vary greatly even within the same city.

2. Preparing for connection: SIM card and operator settings

Even the most powerful modem is useless without a properly configured SIM card. Here's what to do. to first connection:

1. Activate a tariff with unlimited or larger traffic package. Mobile data is used up faster on a modem than on a smartphone. Please pay attention to tariffs like "For the modem" or For the home from operators - they are cheaper than standard ones.
2. Check SIM card compatibility. Older cards (issued before 2018) may not support 4G/5G. Replace them free of charge at a carrier store.
3. Set up APN. This is the access point address the modem uses to connect. Most carriers configure it automatically, but sometimes it requires manual entry.

Examples of APNs for popular operators (2026):

• 🏢 MTS: internet.mts.ru (username and password - mts)
• 🟢 Beeline: internet.beeline.ru (login/password not required)
• 🔴 Megaphone: internet or lte.internet (depending on the region)
• 🟡 Tele2: internet.tele2.ru (without authorization)

⚠️ Attention: If you use virtual operator (For example, Tinkoff Mobile or SberMobile), check the APN on their website - it may differ from the "big four".

To check the current APN settings on your modem:

1. Connect the modem to your computer (for USB) or go to the router's web interface (usually at 192.168.1.1 or 192.168.0.1).
2. Go to the section Settings → Mobile network → APN (the name may differ).
3. Compare the parameters with the operator's recommendations.

3. Connecting the modem and initial setup

The connection process depends on the device type. Let's look at two of the most common scenarios: USB modem And 4G router.

Scenario 1: USB Modem (PC/Laptop)

If you have a USB modem (for example, Huawei E8372), follow these steps:

1. Insert the SIM card into the modem's SIM card slot (usually under the cover on the case).
2. Connect the modem to your computer's USB port. Wait for the drivers to install (Windows usually does this automatically).
3. Launch your modem management program (for example, Huawei Mobile Partner or ZTE Connection Manager). If you don't have it, download it from the manufacturer's website.
4. In the program interface, click ConnectIf the connection is not established, check your APN settings (see the previous section).

To share Wi-Fi from your computer:

• 🖥️ Use the built-in function Mobile hotspot (Windows 10/11): Settings → Network & Internet → Mobile Hotspot.
• 🔄 Or install third-party software: Connectify, mHotspot, Virtual Router.

Scenario 2: 4G/5G router (for Wi-Fi distribution)

For routers of the type TP-Link M7650 or Huawei B525:

1. Insert the SIM card into the slot (usually under the battery or on the back panel).
2. Plug the router into a power outlet. Wait for it to boot up (the indicators should be steady).
3. Connect to the router's Wi-Fi network (the name and password are indicated on the sticker on the case).
4. Go to the web interface at 192.168.1.1 or 192.168.0.1 (default login/password - usually admin/admin).
5. In the section Quick Setup or Network settings select connection type 4G/5G and save the changes.

Once successfully connected, the router will automatically distribute Wi-Fi. You can change the network name (SSID) and password in the section Wi-Fi Settings.

4. Setting up a Wi-Fi network: name, password, and security

By default, Wi-Fi networks of modems and routers have standard names (for example, TP-Link_1234) and simple passwords. This is unsafe—such networks are easy to hack. Here's how to set up protection:

1. Change the network name (SSID). Don't use personal information (such as your last name or address). A random string of letters and numbers is best, such as Net-7F92X.
2. Set a complex password. The minimum length is 12 characters, with a mix of letters, numbers, and special characters. Example: kL8#pQ1!mN3$vR.
3. Select the encryption type. The best option is - WPA2-PSK or WPA3-PSK (if supported). Avoid deprecated WEP.
4. Turn it off WPS. This feature makes it easier to connect devices, but it has vulnerabilities.

How to change settings using a router as an example Huawei B525:

1. Go to the web interface (192.168.8.1).
2. Go to Settings → WLAN → Basic Settings.
3. In the field SSID Enter a new network name.
4. IN Security Mode select WPA2-PSK.
5. IN WPA Pre-Shared Key Please enter your password.
6. Save the changes and reboot the router.

⚠️ Attention: If you are using the modem in a public place (for example, in a cafe or coworking space), turn on the function Guest network in the Wi-Fi settings. This isolates devices from each other and protects against man-in-the-middle attacks.

For USB modems that distribute Wi-Fi via a computer, security settings depend on the software used. For example, in Connectify:

• Open the program and go to Settings → Wi-Fi Security.
• Select WPA2-PSK and set a password.
• Activate the option Block Unknown Devicesto restrict access.

How to check who is connected to your Wi-Fi?

In the router's web interface, find the section DHCP Clients or Connected DevicesAll connected devices and their MAC addresses are displayed there. If you see an unfamiliar device, change the network password.

5. Optimizing connection speed and stability

Even with a good signal, the internet speed via a modem may be lower than expected. Here 7 ways improve performance:

• 📶 Positioning the modem. Place it on a raised platform. Avoid closed cabinets and metal surfaces, as they shield the signal.
• 🔄 Changing the frequency range. In the router settings (Network → LTE Settings) try to specify the range manually (for example, B20 (800 MHz) instead of auto). Sometimes this reduces interference.
• 📡 External antennas. For modems with connectors TS-9 connect directional antennas (eg Poynting XPOL-1). They amplify the signal by 10–20 dB.
• 🔋 Power supply. USB modems are sensitive to unstable voltage. Use a charged power bank or a powered USB hub.
• 🛠️ Firmware update. Visit the manufacturer's website and check the latest software version for your model.
• 🕒 Time of use. Mobile networks are busiest in the evening (6:00 PM–11:00 PM). Use nighttime hours to download large files.
• 📱 Device limitation. The more devices connected to your Wi-Fi, the slower your speed. Disable unnecessary devices in your router settings.

To diagnose speed, use the following services:

• Speedtest by Ookla - shows ping, download and upload.
• Fast.com — measures Netflix speed (useful for streaming).
• nPerf — tests the stability of the connection.

If the speed is lower 10 Mbps If the signal is good, check:

1. Is it not activated? Limit Mode in the tariff (some operators limit the speed after the traffic is used up).
2. Is traffic saving enabled in Windows/macOS settings?
3. Is someone using your Wi-Fi without permission (see the security section).

6. Solving typical problems

When using modems, users encounter recurring errors. We have collected TOP 5 problems and ways to eliminate them:

If the modem gives an error 691 or 628 (Authentication error) indicates a problem with the SIM card. Solutions:

• Check your tariff balance and activity.
• Reboot your modem.
• Try a different SIM card (the current one may be blocked).

For error 734 (PPP protocol interrupted):

• Update your modem firmware.
• Disable Windows Firewall temporarily.
• Reset the modem to factory settings (button Reset on the body).

⚠️ Attention: If you use your modem abroad, check for roaming frequency support. For example, Huawei E5577C does not work with American operators on the frequency 700 MHz (B12).

7. Alternative methods for receiving Wi-Fi via a modem

Besides the standard connection, there are less obvious but useful scenarios:

• 🔗 Connecting the modem to the router. If you have a regular router (for example, ASUS RT-N12), it can be used to distribute the Internet from a USB modem. To do this:
1. Insert the modem into the USB port of the router (if supported).
2. In the router settings, select the connection type USB Modem.
3. Please enter your operator's APN.

📶 Using a modem as a backup channel. Set up your router (for example, Keenetic) to automatically switch between wired Internet and modem when the main connection is interrupted.

🚗 Mobile Wi-Fi in the car. Special car routers (for example, Huawei E5885) are connected to the cigarette lighter and distribute the Internet to passengers. Important: choose models that support GPS to save traffic.

To connect a USB modem to a router, you may need firmware with support USB Modem ModePopular firmware:

• DD-WRT - supports most models TP-Link And ASUS.
• OpenWRT - more flexible, but requires configuration skills.

Example setup for Keenetic:

1. Connect the modem to the USB port of the router.
2. Go to the web interface at 192.168.1.1.
3. Go to Internet → USB modem.
4. Select your modem from the list and specify the APN.
5. Save the settings and reboot the router.

How to check if a router is compatible with a USB modem?

Find a list of supported USB modems on the router manufacturer's website. For example, ASUS RT-AC53 are suitable Huawei E3372 And ZTE MF823, but not all models Yota.

FAQ: Frequently asked questions about Wi-Fi reception via a modem

Is it possible to use a modem without a SIM card?

No, a modem without a SIM card will not be able to connect to a mobile network. However, some models (for example, Huawei E5788) support connection to an external Internet source via a port RJ-45 and distributing it via Wi-Fi.

Which operator is best for a modem in 2026?

The choice depends on the region. In Russia, the leaders in terms of coverage and speed are:

• MTS — the best 4G/5G coverage in rural areas.
• Megaphone - high speed in cities, but expensive traffic.
• Tele2 — budget tariffs, but weaker coverage in remote areas.
• Iota — unlimited traffic, but may limit speed after 100 GB.

Before choosing, check the coverage map on the operator's website.

Is it possible to share Wi-Fi from a phone instead of a modem?

Yes, modern smartphones (for example, Samsung Galaxy or iPhone) are able to distribute the Internet through Modem modeHowever, this method has its drawbacks:

• The battery drains quickly.
• Limit on the number of connected devices (usually up to 5–8).
• Many operators block traffic distribution from unlimited tariffs.

For permanent use, it is better to purchase a separate modem.

How to reset a modem to factory settings?

The method depends on the model:

• For USB modems: there is usually a button Reset on the body (press and hold for 10 seconds).
• For 4G routers: button Reset on the back panel (use a paper clip).
• For software reset: in the web interface, find System Tools → Restore.

After the reset, you will have to reconfigure APN and Wi-Fi.

The modem connects, but the speed is very slow. What should I do?

Check the following:

1. Signal level (in the modem interface or through the program NetMonster). If less than 2-3 divisions, use an external antenna.
2. The operator's network is busy (try connecting at a different time of day).
3. APN settings (sometimes operators change them without warning).
4. Tariff restrictions (for example, after high-speed traffic is exhausted).

If nothing helps, contact your operator's support - the problem may be on their end.