How to Speed ​​Up Wi-Fi on Xiaomi: A Complete Guide to Network Optimization

Slow Wi-Fi on devices Xiaomi — a common problem that can arise due to both incorrect smartphone settings and router operation. In 2026, the manufacturer continues to produce gadgets with its proprietary interface. MIUI, which doesn't always manage network connections optimally. Fortunately, most causes of slow speeds can be resolved independently—without calling a service center or purchasing new equipment.

In this article we will look at 10 proven methodsthat will help speed up Wi-Fi on smartphones Redmi, POCO, Xiaomi 13/14 and other models, as well as on routers Mi RouterFrom simple settings changes to extensive channel and firmware optimization, you'll find a solution for any situation. It's important to note that some methods require administrator rights or access to the engineering menu, so we'll highlight their complexity separately.

Before you begin setting up your connection, check your baseline speed. Apps like Speedtest or nPerfRun the test on your smartphone and on your computer (if it's connected via cable). If the speed is significantly higher on the PC, the problem is definitely in the settings. XiaomiIf both devices show low values, the problem lies with the ISP or router.

1. Optimizing the Wi-Fi channel on a Xiaomi router

One of the main factors that influences speed is channel congestionIn apartment buildings, most routers operate on standard channels (for example, 6 or 11 in the 2.4 GHz band), which leads to mutual interference. Routers Xiaomi allow you to manually select a channel or enable automatic search for the least loaded one.

To change the channel:

1. Open the app Mi Wi-Fi (or the router's web interface at 192.168.31.1).
2. Go to Settings → Wi-Fi → Additional settings.
3. Select the band (2.4 GHz or 5 GHz) and manually specify the channel (recommended 1, 6 or 11 for 2.4 GHz).
4. For 5 GHz use channels 36, 40, 44 or 48 - they are less busy.
5. Save the changes and reboot the router.

If you are unsure which channel to choose, use network analysis applications, such as WiFi Analyzer (Android) or NetSpot (Windows/macOS). They will show the load on each channel in your environment.

2. Changing the Wi-Fi operating mode (802.11n/ac/ax)

Modern routers Xiaomi support several Wi-Fi standards: 802.11n (up to 300 Mbps), 802.11ac (up to 1 Gbit/s) and 802.11ax (Wi-Fi 6, up to 2.4 Gbps). Mixed mode is often selected by default for compatibility with older devices, but this reduces speed for newer devices.

To force a switch to a faster standard:

• 📱 For smartphones: go to Settings → Wi-Fi → Additional settings → Wi-Fi mode and select 802.11ac (if the router supports it) or 802.11n/ac.
• 📶 For a router: in the web interface, find Wireless Mode → Wi-Fi Settings → Standard and install 802.11ac or 802.11ax (if available).

⚠️ Attention: If after changing the standard some devices stop connecting to the network, return to mixed mode (802.11b/g/n/ac). Older laptops or smart devices (such as cameras) may not support new standards.

On routers Xiaomi with support Wi-Fi 6 (For example, Mi Router AX6000) turn on the function OFDMA And MU-MIMO in the advanced settings. This will allow you to simultaneously exchange data with multiple devices without losing speed.

3. Updating the router and smartphone firmware

Manufacturers regularly release updates that fix Wi-Fi issues. On routers Xiaomi The firmware updates automatically, but sometimes the process gets stuck. Check if the version is up to date:

For router:

1. Open the app Mi Wi-Fi.
2. Go to General Settings → Firmware Update.
3. If a new version is available, click Refresh and wait until it completes (do not turn off the power!).

For smartphone:

1. Go to Settings → About phone → System update.
2. Download and install the latest version MIUI.

⚠️ Attention: After updating the router firmware, reset it to factory settings (Settings → Advanced → Reset). This will help avoid conflicts between old configurations and the new version of the software.

What to do if the router update is stuck?

If the update process is stuck at 0% or 100% for more than 10 minutes, unplug the router for 30 seconds, then plug it back in. If the issue persists, download the firmware manually from the official website. Xiaomi and upload it via the web interface in the section Update → Manual Download.

4. Configuring MTU and channel width

MTU (Maximum Transmission Unit) — the maximum size of a data packet that can be transmitted without fragmentation. An incorrect MTU value leads to packet loss and reduced speed. The optimal value for most networks is 1472 or 1500.

To change the MTU on a router Xiaomi:

1. Log in to the web interface (192.168.31.1).
2. Go to Network → Local Network → IP Settings.
3. Find the field MTU and set the value 1472.
4. Save and reboot the router.

Also check channel width (Channel Width) in Wi-Fi settings:

• 📶 For 2.4 GHz: install 20 MHz (more stable) or 40 MHz (faster, but may create interference).
• 📶 For 5 GHz: select 80 MHz (maximum speed) or 160 MHz (if the router supports Wi-Fi 6).

5. Disable power-saving features on your smartphone

shell MIUI aggressively optimizes energy consumption, which often leads to automatically turn off Wi-Fi in the background or lower its priorityThis is especially noticeable on budget models. Redmi And POCO, where power saving is enabled by default.

To disable restrictions:

1. Go to Settings → Battery & performance → Battery mode.
2. Select High performance (or No restrictions for specific applications).
3. Enable the option Wi-Fi support in sleep mode V Settings → Wi-Fi → Advanced.
4. Turn it off Adaptive brightness And Charging optimization - they indirectly affect network activity.

Also check the settings of specific applications (for example, messengers or streaming services):

• 🔄 Log in Settings → Applications → Manage applications.
• 📱 Select the desired application (for example, YouTube or Telegram).
• 🔋 Click Energy consumption and install No restrictions.

Super Power Saving mode is disabled.

Wi-Fi is included in the "Unrestricted" list for key apps.

The "Keep Wi-Fi connected in sleep mode" option is enabled.

Adaptive network optimization is disabled in MIUI-->

6. Using the engineering menu for deep optimization

If the standard settings did not help, you can use engineering menu (##4636##). This method is suitable for experienced users, as incorrect changes can lead to crashes.

Instructions:

1. Open the app Telephone and enter the combination ##4636##.
2. Go to the section Wi-Fi Information.
3. View current values Signal strength (signal) and Link speed (connection speed).
4. If the speed is lower 150 Mbps (for 5 GHz), try changing the settings manually:

For 5 GHz:
- Set channel width: 80 MHz
- Modulation type: VHT80
- MIMO mode: 2x2

For 2.4 GHz:
- Channel width: 20 MHz
- Modulation type: HT20
- Disable the Packet Aggregation option if it is enabled.

⚠️ Attention: Changes to the engineering menu are not saved after rebooting the smartphone. To fix the settings, use apps like MTK Engineering Mode (for MediaTek processors) or Qualcomm Settings (for Snapdragon).

For routers Xiaomi There are also hidden settings accessible via SSH. For example, you can increase the transmit power (txpower) to the maximum value (usually 20 dBm for 2.4 GHz and 23 dBm (for 5 GHz). However, this requires root access and may violate local radiation regulations.

7. Alternative methods: repeaters, mesh systems, and antenna replacement

If all software methods have been exhausted and the Wi-Fi speed is still Xiaomi remains low, consider hardware solutions:

• 📡 Signal repeater (repeater): suitable for large apartments. Models Xiaomi Mi Wi-Fi Repeater 2 or TP-Link RE605X amplify the signal without losing speed (if configured correctly).
• 🔄 Mesh system: if you have multiple routers Xiaomi, combine them into a Mesh network through the app Mi Wi-FiThis will ensure seamless roaming between access points.
• 📶 Replacing antennas: on routers Mi Router 4A and older antennas are non-removable, but in models AX6000 And AX9000 they can be replaced with more powerful ones (for example, with amplification 9 dBi).
• 🔌 Powerline adaptersIf Wi-Fi goes through walls, use adapters. TP-Link AV1000, which transmit the Internet through electrical wiring.

For smartphone owners Xiaomi with support Wi-Fi 6E (For example, Xiaomi 13 Pro or POCO F5 Pro) we recommend upgrading your router to a model that supports the range 6 GHzThere is virtually no interference in this range, and the speed can reach 2.4 Gbps.

8. Diagnosing DNS and IP Conflict Issues

Sometimes low speed is not related to Wi-Fi, but to DNS servers or IP conflictsProviders often use slow DNS, and dynamic IP addresses can be duplicated across the network.

To change DNS on your smartphone:

1. Go to Settings → Wi-Fi.
2. Click on your network name and select Change network → Advanced settings.
3. In the field DNS 1 And DNS 2 enter:

   1.1.1.1 (Cloudflare)
   8.8.8.8 (Google DNS)

4. Save and reconnect to the network.

For router:

1. In the web interface, go to Network → WAN.
2. In the section DNS servers please provide the same addresses (1.1.1.1 And 8.8.8.8).
3. Disable the option Automatically obtain DNS from your provider.

If devices on the network conflict due to the same IP, enable it on the router DHCP reservation:

• 🔧 Go to DHCP → Address Reservation.
• 📱 Add the MAC addresses of key devices (smartphone, TV, laptop) and assign static IP addresses to them.

⚠️ Attention: If you can't access certain websites (such as banking websites) after changing your DNS, reset your provider's settings. Some services block third-party DNS services for security reasons.

FAQ: Frequently asked questions about speeding up Wi-Fi on Xiaomi devices

Why is Xiaomi's Wi-Fi speed slower than other devices?

This is due to optimizations in MIUI, which limit background activity to save battery life. Also, some models (for example, Redmi Note (series) use budget Wi-Fi modules with limited capabilities. Check your power saving settings and update your firmware.

How do I check if my Xiaomi supports Wi-Fi 6?

Go to Settings → About phone → Full specifications → Network status. If in the section Wi-Fi indicated 802.11ax, does your smartphone support Wi-Fi 6This information can also be found on the official website. Xiaomi in the model specifications.

Is it possible to boost a Xiaomi Wi-Fi signal without a router?

Yes, but the possibilities are limited:

• Use modem mode (if you have an unlimited tariff) and distribute the Internet through Access point.
• Connect external antenna (for models with removable antennas, for example, POCO F3 GT).
• Turn on Airplane mode for 10 seconds, then turn it off - this will reset the network settings.

What should I do if my Wi-Fi connection becomes even slower after changing the channel?

Please restore the previous settings and follow the steps below:

1. Check the new channel load via WiFi Analyzer.
2. Reduce the channel width (for example, with 40 MHz to 20 MHz for 2.4 GHz).
3. Turn off nearby devices that may cause interference (microwaves, wireless headphones).

How to reset Wi-Fi settings on a Xiaomi to factory settings?

For smartphone:

1. Go to Settings → System → Reset settings.
2. Select Reset network settings (this will delete all saved networks and passwords).

For router:

1. In the web interface, find Settings → Advanced → Reset.
2. Or hold down the button Reset on the router body for 10 seconds.