How to increase the range of the Xiaomi Wi-Fi router: from settings to antennas

Xiaomi's weak Wi-Fi signal is a problem that one in three device owners face. AX6000 or Redmi Router AX5 They may fall short of distant rooms, especially in thick-walled apartment buildings, and may be due not only to technical limitations, but also to incorrect settings, interference from neighbors, or outdated firmware.

In this article, we’ll break down 10 proven ways to increase coverage radius – from free software tweaks to buying additional hardware. You will learn how to properly place a router in the apartment so that the signal penetrates the walls without loss, which Wi-Fi channels to choose to minimize interference, and why it is sometimes enough to update the firmware to increase speed by 30%. 4A, AX3600 Redmi Router AC2100, But it is also suitable for other brand devices.

1. Optimal placement of the router: where to put the signal "pierce" the wall

Up to 70 percent of weak Wi-Fi problems are solved by the right router location. Most users put the device where it is convenient — on the floor near the outlet or in the closet — but these are the worst options. Xiaomi signal is distributed spherically, so the router should be:

• 📍 In the middle of the apartment, if possible, place it on a table or shelf in the middle of the apartment, which minimizes the dead zones".
• 🪟 At 1-2 meters, the signal travels better from top to bottom, ideally on a bookcase or wall mount.
• 🚫 Away from metal and water, refrigerators, microwaves, aquariums and mirrors screen the signal. Keep the router at least 1 meter away from them.
• 🔌 Away from other electronics, TVs, speakers and even charging devices interfere at 2.4 GHz.

For multi-floor homes, it’s best to place the router on the second floor, so the signal will evenly cover both levels. If that’s not possible, consider using the Mesh system (discussed below).

⚠️ Warning: Don't put your Xiaomi router near windows if you live on the first floor. Neighbors can connect to your network, and the signal power will go outdoors, weakening the coverage inside the apartment.

2. Choosing the Right Wi-Fi Channel: How to Avoid Neighborhood Interference

In apartment buildings, neighbors' routers create overlapping channels, which causes speed and range to fall. Xiaomi defaults to select the channel automatically, but often this is a suboptimal option.

1. Download the Wi-Fi Analyzer (Android) or NetSpot app (Windows/macOS).
2. Scan the airwaves at frequencies of 2.4 GHz and 5 GHz.
3. Choose a channel with minimal congestion (ideally, where the neighbors’ signals are less than 3).
4. Go to the router’s web interface (192.168.31.1 or miwifi.com) and manually set the channel in the Wi-Fi settings section. → Additionally.

For 2.4 GHz, you'd better choose channels 1, 6 or 11, they don't overlap. For 5 GHz, prioritize channels 36-48 or 149-165 (if supported by your model). AX3600 It runs on channels up to 165 and the Mi Router runs on the same route. 4A — only 144.

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If your Xiaomi router does not have manual channel selection, upgrade to the latest version. MIUI For routers, this functionality is often absent.

3. Firmware Update: Why It Increases Range by 20–30%

The manufacturer regularly releases updates for Xiaomi routers that optimize antennas and signal transmission algorithms. v1.2.45 for Mi Router AX3600 A bug was fixed that caused 5GHz transmission power to drop by 40% when the chip was heated. After the update, users reported a 2-3 room increase in range.

To update the firmware:

1. Open the Mi Wi-Fi app (or the web interface at miwifi.com).

For Redmi Router models (e.g, AC2100) The updates sometimes come with a delay, and you can manually install the firmware:

1. Download the firmware file from the official website (Subsection "Support").


2. In the router web interface, select Additional → Manual Update.




3. Download the downloaded file and confirm the installation.

⚠️ Warning: Don't interrupt the upgrade process or turn the router off the outlet.For Xiaomi Mi Router 4C And other budget models, this can lead to "bricking" (the device will stop turning on). If the update has been hanging for longer than 10 minutes, turn off the power, wait 30 seconds and turn on again.

Tune the transmission power: how to increase the signal without compromising health

In Xiaomi routers, the default transmission power is limited to 100 mW (2.4 GHz) and 200 mW (5 GHz), which can be increased, but with reservations:

• 📶 Maximum allowable power in Russia – 100 MW for 2.4 GHz and 500 MW for 5 GHz (according to the standard) SRRC). Exceeding threatens a fine from Roskomnadzor.
• ⚡ Increase in power by 30-50% really gives an increase in radius by 10-15 meters, but reduces the service life of antennas.
• 🛡️ A power of up to 1 W is not affected by human health (according to the WHO), but it is better not to keep a router in the bedroom.

To change power on supported models (e.g. Mi Router) 3G/4A Gigabit):

1. Connect to the router on SSH (guideline).
2. Enter the command: nvram set txpwr=100 (where 100 is the desired power in mW for 2.4 GHz).
3. For 5 Use: nvram set set txpwr_5g=200
4. Save the settings: nvram commit reboot

For models without support SSH (For example, Redmi Router X5) You can't change the power, it's a firmware limit, and then you can just change the antennas or buy a repeater.

5. Replacing standard antennas with reinforced ones: is the game worth the candle?

Xiaomi routers are equipped with antennas with gain of 3-5 dBi. They can be replaced by more powerful ones - 7-9 dBi, which theoretically increases the range of action by 20-30%.

• 📡 Enhanced antennas >9 dBi narrow the angle of coverage (the signal becomes "directed" like a spotlight). This is suitable for long corridors, but degrades the coverage in a wide range.
• 🔧 Not all Xiaomi models have removable antennas. 4A They're soldered, and AX3600 — removable RP-SMA).
• 💰 Price of high-quality antennas (for example, TP-Link) TL-ANT2409A) — 1,500 ₽. Cheap Chinese products often have the opposite effect.

If you decide to upgrade, choose antennas with:

• 🔹 Connector. RP-SMA (Xiaomi).
• 🔹 Accretion of 7–9 dBi (more is not always better).
• 🔹 Dual-band support (if your router is running at 2.4 and 5 GHz).

Example of compatible antennas:

⚠️ Warning: After replacing the antennas, reset the router settings to the factory (Settings) → System system → This is what the device needs to recalibrate the transmission power for the new antennas.

6. Using a repeater or Mesh system: When nothing helps

If all previous methods have failed, there are two options:

1. Wi-Fi repeater, which amplifies the signal of the existing network, is suitable for small dead zones.
2. Mesh is a multi-router network, ideal for large apartments or houses.

For Xiaomi routers, the best options are:

• 🔄 Repeater: Xiaomi Mi Wi-Fi Repeater 2 (up to 300 Mbps, price) ~1 500 ₽) or TP-Link RE605X (up to 1.8 Gbps, ~3 000 ₽).
• 🏠 Mesh: Xiaomi Mesh System (2 packages) ~5 000 ₽) Deco X20 from TP-Link (~6 000 ₽ 3 knots).

How to set up Xiaomi Mi Wi-Fi Repeater 2:

Connect the repeater to the socket in the zone of stable signal|Press the button. WPS on the router, then on the repeater.|Wait for synchronization (the indicator is lit in blue)|Move the repeater to the problem area (not further than 10 m from the router)|Check the speed on the device-->

For Xiaomi's Mesh system:

1. Connect the main node to the Internet.
2. Add additional nodes through the Mi Wi-Fi app (Mesh section).
3. Place the nodes so that they overlap each other by 30-50%.

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A Mesh system is better than a repeater because it automatically switches devices between nodes without losing speed, and a repeater creates a separate network that can slow down the connection.

7.Alternative methods: from region change to Padavan firmware

If standard methods don't work, you can take drastic measures, which require technical skills and can be insecure, but they have the maximum effect.

• 🌍 Change of router region: In some firmware (for example, for Mi Router) 3G) You can change the region to the United States or the EU, where you can have a lot of transmission power. SSH team: nvram set country_code=US nvram commit reboot
• 🛠️ Padavan firmware: Castom firmware with advanced antenna settings, QoS and support VPN. Suitable for Mi Router 4A, 3G, R3P. Installation instructions.
• 📡 Directional antennas: For long-range point transmission (e.g., to a country house), use Yagi antennas (amplification up to 15 dBi).

⚠️ Note: Padavan firmware voids warranty and may cause unstable operation of the router.Before installing, backup the original firmware via the web interface (Settings) → Backup).

8.Authorization: How to Measure Wi-Fi Radius Gains

After applying any of the methods, you need to evaluate the effectiveness.

1. Use the Wi-Fi SweetSpot app (iOS/Android) mapping.
2. Check the speed at different points of the apartment via Speedtest or Fast.com.
3. Pay attention to ping (ideally — <30 ms) and the stability of the connection (whether there are breaks during movement).

Example of interpretation of results:

If after all the manipulations the speed in distant rooms does not exceed 10-20 Mbit / s, it is worth considering wired solutions: Powerline adapters (internet transmission via wiring) or Ethernet cable laying.

FAQ: Frequent questions about increasing the radius of Wi-Fi on Xiaomi