How to connect a Xiaomi router 4A Internet access: 3 proven ways + mistake-making

Xiaomi Mi Router router 4A It remains one of the most popular budget solutions for home networking due to the combination of ease of setup, stable operation and support for modern Wi-Fi 5 standards (802.11ac). However, even with such a device, users often have questions: how to connect it to the Internet correctly, what settings to choose for maximum speed, and what to do if the connection is not established.

In this article, we will discuss three main ways of connecting - through an Ethernet cable from the provider, in the Wi-Fi repeater mode and using the Internet. 4G-modem - taking into account the nuances of the MiWiFi firmware and the features of Russian ISPs, you will also find a table of compatibility with popular operators, a checklist for diagnosing problems and answers to frequent questions that are not covered in the official documentation.

We will pay special attention to setting up PPPoE parameters for Rostelecom, Beeline and MTS, since this is where users often make mistakes. If you have already tried to connect a router, but encountered an error code (for example, 651 or 678), there is a section in the article with decryption and solutions.

1.Preparation of the Xiaomi router 4A customize

Before you connect Xiaomi Mi Router 4A There are a few basic steps that you need to do to the Internet, and they're often skipped, which leads to connection problems or network instability.

First, check the delivery kit. The box should have a router, a power supply (12V/1A), Ethernet cable and brief instructions: If you don't have one, use any other cable that fits the standard. Cat5e The lack of original cable does not affect speed, but cheap uncertified wires can cause connection breaks.

Make sure your ISP provides access to one of the supported protocols:

• 🔌 Dynamic IP (DHCP) — automatic setting, most often at city providers such as "Dom.ru" or "TTK».
• 🔐 PPPoE – requires login / password input (Rostelecom, Beeline, MTS).
• 📡 L2TP/PPTP - rare, but used by some regional operators.
• 🌐 Static IP — if the provider issues fixed addresses (usually for legal entities).

If you do not know your type of connection, check the contract or call in support.

Finally, reset the router to factory settings if it's been used before.

1. Turn on the power.
2. Find the Reset button on the back (marked with the icon) ⭮).
3. Press it with a paper clip for 10-15 seconds until the indicator starts flashing yellow.

⚠️ Note: If the router previously configured through the Mi Home app, the reset will remove the link to the Xiaomi account.

2. Connection via Ethernet cable (main method)

This is the most reliable and fastest method of connection, as it uses a wired connection without loss of speed, and the instructions are relevant for most providers, including Rostelecom, Beeline, MTS and local operators.

Step 1 Connecting to the provider

• 🔌 Connect the cable from the provider to the port WAN (usually highlighted in blue) on the back of the router.
• 💻 Connect your computer or laptop to one of the ports LAN (Yellow ports or connect to the network via Wi-Fi Xiaomi_XXXX (The password is on the bottom sticker).
• 🔋 Turn on the router. Wait for the indicator. SYSTEM It will light up in blue (meaning the device is ready to be set up).

Step 2: Log in to the web interface

Open any browser and type in the address bar 192.168.31.1 or miwifi.com. If the page does not open:

• Check what the computer is getting. IP-address automatically (in the properties of the connection should be received) IP-address).
• Disable VPNs or proxy servers.
• Try another browser (Chrome or Firefox is recommended).

Step 3: Configure the type of connection

After you log in, you'll have to choose a language and a region.

1. Choose Manual Setup (if you need custom settings) or Quick Setup (to automatically determine the type of connection).
2. If the provider uses PPPoE, enter the login and password from the contract. Make sure the symbol register matches!
3. For dynamic IP Just click Next – the router will receive the settings itself.
4. If static is required IP, enter addresses DNS, gateway and subnet mask (this data must be provided by the provider).

Make sure the cable is connected to the port WAN|

Check the correctness of the login / password (with PPPoE)|

Disable bidirectional NAT, if the provider does not support it|

Save settings and restart the router-->

After saving, the router will restart. INTERNET If it's on in blue, it's a good connection. If it's on in orange, see the "Error Decoding" section below.

PPPoE (requires login/password)|

Dynamic IP (DHCP)|

Static IP|

L2TP/PPTP|

I don't know.-->

3. Configure in the Wi-Fi repeater mode (repiter)

If you already have a main router, but Wi-Fi coverage is not enough, Xiaomi 4A It can be used as a signal repeater, and it's convenient for large apartments or offices that need additional access points.

Important: in repeater mode, the maximum connection speed will be limited to half the speed of the main router (due to the peculiarities of Wi-Fi operation). For example, if the main router produces 300 Mbps, then through the repeater you will receive a copy of the router. ~150 Mbps.

Instructions:

1. Connect Xiaomi 4A wait until you have loaded (indicator) SYSTEM blue-burning).
2. Connect to his Wi-Fi network (Xiaomi_XXXX) phone-in.
3. Open the web interface at 192.168.31.1.
4. In the menu, select Additional settings. → Mode of work → Wi-Fi amplifier.
5. Click Next and select the network you want to repeat from the list. Enter the password from it.
6. Save the settings. The router will reboot, and then create a new network with the same name, but with a suffix _EXT.

Nuances:

• 🔄 If the main router is running at 5 GHz, and Xiaomi 4A It doesn't support it. 4A 100M — Only 2.4 GHz, the repeater won't be able to connect!
• 🔒 The repeater network password will be the same as the main network, and you can only change it through the web interface.
• 📶 For stable operation, the distance between routers should be no more than 10-15 meters (without obstacles).

💡

If the speed drops more than 50% after setting up the repeater, try changing the Wi-Fi channel on the main router. Optimal channels for 2.4 GHz: 1, 6 or 11 (they do not overlap).

4. Connection through 4G-modem (USB)

Xiaomi Mi Router 4A (modification 4A Gigabit and 4A 100M) Support Internet connection through USB-standard modem HSPA+ or LTE. This is relevant for cottages, country houses or places where there is no wired Internet.

Requirements:

• 📶 The modem must be in the list of compatible (see table below).
• 🔌 USB-The router port is limited to power (500 mA), so some modems may not be clear. USB-feed-in.
• 📱 SIM-card should be without PIN-code (or it must be disabled in the modem settings).

Step-by-step:

1. Put it in. SIM-map to the modem and connect it to USB-router.
2. Go to the web interface (192.168.31.1) and go to Settings → Internet.
3. Choose. USB-modem as a type of connection.
4. If the modem is determined, select it from the list and click Connect.
5. If necessary, enter APN your operator (for example, Internet.beeline.ru for Beeline).

⚠️ Warning: If the router can't see the modem, try: Reboot both devices, connect the modem via the powered hub, update the router's firmware to the latest version (see the Software Update section below).

5. Decoding of connection errors and their solution

If after setting up the indicator INTERNET If you're on the orange or flashing red, you can't connect the router. Here's a table of the most common errors and how to fix them.

If there is no error, but the internet is not working:

• 🔍 Check if the plane mode is turned on or if Wi-Fi is turned off.
• 🔄 Restart the router (button on the back panel).
• 📡 Try connecting to the router from another device (phone, tablet).

6. Optimizing settings for maximum speed

Even after a successful connection, the Internet speed may be lower than expected. Here are 5 key parameters that you should configure in the Xiaomi web interface 4A:

1. Wi-Fi channel and bandwidth

By default, the router selects the channel automatically, but that's not always optimal.

• Go to Settings. → Wi-Fi.
• Select the channel manually (for 2.4 GHz, 1, 6 or 11 are recommended).
• Set the channel width to 20 MHz (for stability) or 40 MHz (for speed, but interference is possible).

2. Wi-Fi mode of operation

If your devices support you 802.11ac, set the mode 11ac/n For older devices (e.g. Xiaomi Redmi Note) 4) leave 11b/g/n.

3. MTU

If pages load slowly but speed is high, try changing them. MTU (Maximum Transmission Unit: Optimum value for PPPoE is 1472:

1. Go to Settings → Internet.
2. Find the field. MTU and set 1472 (or 1500 for the DHCP).
3. Save and restart the router.

4.Switch off IPv6

If your provider does not support IPv6, But the option is on, and it can cause delays. → Internet → IPv6.

5. Traffic Priority (QoS)

If you have many devices, turn on QoS (Quality of Service) and prioritize video, games, or calls.

• Go to Additional Settings → QoS.
• Select Priority by type of traffic.
• Check the boxes for Videos, Games or Voice.

💡

The most common reason for low speeds over Wi-Fi is congested channel. Use applications like Wi-Fi Analyzer (Android) to find the freest channel in your location.

7. Update firmware and reset to factory settings

If the router is unstable or does not support new features (e.g, IPv6), Xiaomi regularly releases updates for Mi Router 4A, Correcting errors and adding compatibility with new devices.

How to update firmware:

1. Connect to the router via cable or Wi-Fi.
2. Go to the web interface (192.168.31.1).
3. Go to Additional Settings → Update the firmware.
4. Click Check Updates. If a new version is available, click Update.
5. Do not turn off power during the process (it will take 2-5 minutes)

Manual firmware (if automatic update does not work):

If the router doesn’t find updates, but you know they are:

• Download the latest firmware from the official Xiaomi website (choose the Mi Router model) 4A).
• In the web interface, go to Additional settings → Firmware update → Manual loading.
• Download the downloaded file and wait until it is completed.

Reset to factory settings

If the router has become worse after the update or you have forgotten the password:

• Press and hold the Reset button for 10-15 seconds.
• After restarting, the router will return to the original settings (link to the network: Xiaomi_XXXX, password on the sticker).

⚠️ Warning: Once reset, the router will lose all settings, including Wi-Fi password, Xiaomi account binding, and parental controls. If you used Mi Home to manage, you will need to re-authorize.

FAQ: Frequent questions about Xiaomi 4A