How to set up a Xiaomi router 4A in Wi-Fi repeater mode: a complete guide with nuances

Do you want to expand your Wi-Fi coverage in your home, but you don’t want to buy a separate repeater? 4A (version 4A Gigabit and 4A 100M) It can work as a repeater -- just fine tune it. In this article, we'll look at the steps to activate the repeater mode, avoid typical errors, and optimize the connection for maximum speed.

Important: Not all Xiaomi firmware 4A If you don't have Repetitor Mode on your menu, don't get upset. We'll show you how to update your firmware or use an alternative method through MiWiFi. 30-50% And how to avoid it.

The article is relevant for models:

• 📡 Xiaomi Mi Router 4A (RM1800, RM1804)
• 📡 Xiaomi Mi Router 4A Gigabit Edition (R4AG)
• 📡 Xiaomi Mi Router 4C (There are nuances, cm. FAQ)

1. Preparation of the router for setting up in repeater mode

Before turning Xiaomi into a new one 4A In a Wi-Fi repeater, follow a few mandatory steps to avoid crashes and ensure stable operation.

Requirements for the main router:

• 🔄 Must maintain the standard 802.11n/ac (Most modern routers are suitable).
• 🔐 The password of the network should be no shorter than 8 characters (Xiaomi repetitor does not work with short passwords).
• 📶 Wi-Fi channel is better fixed manually (automatic selection can cause cliffs).

What you need:

• 📱 Smartphone/PC with browser (we recommend Chrome or Firefox).
• 🔌 Ethernet Cable (optional, for initial configuration).
• ⚡ Power supply from Xiaomi 4A (Do not use unoriginal charges!).

Reset the router to factory settings (Reset button)|Connect Xiaomi 4A Powering near the main router|Make sure the main router distributes Wi-Fi on the channel 1-11 (2.4 GHz)|Remember. SSID and the main network password

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Critical feature: Xiaomi router 4A In repeater mode, it only works at 2.4 GHz. If your main router only distributes Wi-Fi at 5 GHz, the repeater will not connect, in which case you will either have to change the settings of the main router or use another method of signal amplification (for example, a bridge). WDS).

2. Method 1: Configure via web interface (official method)

The most reliable way to activate the repeater mode is through the router control panel.

Step 1. Connect to Xiaomi 4A

Connect the router to power and wait until the light on the case flashes orange. Connect to its Wi-Fi network:

• 🔍 Name of the network (SSID): Xiaomi_XXXX (It's on the bottom sticker).
• 🔐 Password: Admin or indicated on the sticker.

Step 2. Enter the control panel

Open your browser and go to:

http://192.168.31.1

Enter the login and password (by default — admin/admin). If not, reset the settings with the Reset button (hold on). 10 seconds).

Step 3: Activate the repeater mode

Go to the section: Additional settings → Mode of work → Repeater (Repeater)

Click Next and select from the list the network of your main router. Enter the password and save the settings. 1-2 minute).

Method 3: Configure via MiWiFi (for smartphones)

If the web interface seems complicated, use the official MiWiFi app (available for Android and iOS), which is more convenient for beginners, but has limitations:

Advantages:

• 📱 Intuitive interface with hints.
• 🔄 Automatic scanning of available networks.

Disadvantages:

• ⚠️ Not all versions of the app support repeater mode (check the updates).
• 🌐 Interface in Chinese/English (Russian may not be available).

Step-by-step:

1. Install MiWiFi from the App Store/Google Play.
2. Connect to the Xiaomi network 4A (as in Method 1).
3. Open the app and select Add Device → Repeater Mode.
4. Follow the instructions: select the main network, enter the password.
5. Wait for the reboot (the indicator will turn blue).

💡

If the MiWiFi app doesn’t find your router, try connecting to it via cable (computer). → port LAN Xiaomi 4A). Then repeat the search in the app.

4. Optimization of the repeter: how to avoid a drop in speed

After you set up the repeater, you might notice that the Internet speed has gotten slower. That's normal, the repeater transmits data in two stages (router). → repeater → It's a device that increases delays, but there are ways to minimize the loss:

Table: Recommended settings for maximum speed

Additional advice:

• 📶 Turn off the Smart Connect function on the main router (it may interfere with the stable connection of the repeater).
• 🔄 If speed is critical, consider a wired bridge (connecting the main router and Xiaomi) 4A cable).
• 🔋 Do not place the repeater near sources of interference: microwaves, cordless phones, mirrors.

💡

The ideal location of the repeater is where the main router signal is 2-3 split 4 If the signal is weaker, 1 division, the speed will be unstable.

5. Typical errors and their solutions

When setting up a repeater, users often encounter problems, and we've collected the most common ways to fix them:

🔴 Problem: Repetitor is not connected to the main network

⚠️ Attention: If Xiaomi 4A If the main router does not see the network, check whether the Wi-Fi standards are the same (for example, if the main router is running in mode). 802.11ac Only, the repeater won't connect. Is the main router using filtering by MAC-Addresses (add) MAC-Xiaomi 4A Is the main router on the mode? WPS — It can block the connection of the repeater.

🔴 Problem: Repiter is constantly shutting down

Causes and solutions:

• 🔌 Unstable power: Use the original Xiaomi power supply (5V/1A or 5V/2A).
• 📡 Neighborhood Network Interference: Change the channel on the main router (use applications like WiFi Analyzer to analyze the airwaves).
• 🔄 Overheating: Place the router in a ventilated place (not in a closed cabinet!).

🔴 Problem: Low speed through the repeater

If the speed has dropped by more than 50%, try:

• 🔄 Reconnect the repeater to another network (sometimes changing the channel helps).
• 📶 Reduce the channel width to 20 MHz in the main router settings.
• 🔌 Connect Xiaomi 4A Cable to the main router (bridge mode instead of repeater).

Alternative modes: bridge (WDS) repeater

If the repeater mode is not satisfied with speed or stability, consider adjusting the bridge. WDS. This method is more complicated, but gives better results:

Comparison of regimes:

How to set up a bridge WDS Xiaomi 4A:

1. Connect to Xiaomi 4A cable-wire.
2. Go to Additional settings → Wireless Mode → WDS settings.
3. Turn it on. WDS and select the main router network.
4. Enter your password and save it. If necessary, enter a static password. IP-address 4A (for example 192.168.31.2).

7. Resetting and returning to standard mode

If the repetitor is unstable or you want to return to Xiaomi 4A In normal router mode, perform reset:

Method 1: Through the Web Interface

Go to: Additional settings → System system → Restoration of factory settings

Confirm the action and wait for the reboot (takes). ~2 minutes).

Method 2: Hardware reset

Press and hold the Reset button on the router’s body (10-15 And then you get back to the factory settings, and the router will give away its own network again. Xiaomi_XXXX.

⚠️ Warning: If the router doesn't turn on after reset (all indicators are on or none are on), check the power supply. 4A sensitive to voltage surges – use a network filter.

FAQ: Frequent questions about setting up a repeater on Xiaomi 4A