WiFi on Xiaomi is not working well: how to fix connection and speed problems

Why WiFi is not stable on Xiaomi: the main reasons

WiFi issues on Xiaomi devices are one of the most common complaints users have: a smartphone can connect to the network, but the speed is poor, the connection is constantly broken, and sometimes the gadget refuses to see the available access points at all. 80% of cases are not hardware malfunctions, but software failures or incorrect settings.

Among the main reasons for the poor performance of WiFi on Xiaomi are:

• 🔄 Outdated firmware MIUI — bugs in the system often affect the wireless communication module.
• 📶 Incompatibility with a router is an inappropriate standard (e.g, 802.11ac vs 802.11n) channelwidth.
• 🔋 Energy saving – aggressive battery settings turn off WiFi in the background.
• 🛠️ Hardware limitations – weak WiFi module in budget models (e.g. Redmi) 9A POCO C31).

Before you take your phone to the service center, try to diagnose the problem yourself, and in most cases, you can solve it without disassembling the device — just change a few settings or update the software.

1. Check basic WiFi settings on a smartphone

Start with the obvious: make sure the problem isn't with the router, it's with the phone.

1. Connect another device (laptop, tablet) to the same network, and if it works well, Xiaomi is the problem.
2. Reboot your smartphone and router, and 30 percent of the time, it solves the temporary crashes.
3. Check if flight mode or traffic saving is enabled in Settings → Connections → Mobile network.

If the basic manipulations didn’t help, move on to a deeper setup:

• 🔍 Go to Settings. → WiFi, tap your network name and select "Forget Network." Then reconnect by entering your password.
• 🔄 Turn on the Auto Connection option and turn off Smart Switch (it can transfer your phone to the mobile internet for no reason).
• 📡 Try manually specifying static IP (If the router supports the reservation of addresses).

Check the network on another device

Reboot your phone and router

Turn off flight mode and traffic savings

Forget the network and connect again.

Make sure the router is not overloaded (disable the extra devices)

-->

2. Optimizing router settings for Xiaomi

Often the problem is not the phone, but the wrong configuration of the router, especially for low-end Xiaomi Router models (for example, Mi Router 4A or Redmi Router AX5), where the default settings may be suboptimal.

Go to the router’s web interface (usually at 192.168.31.1 or 192.168.0.1) and check the following settings:

⚠️ Note: If you have a dual-band router, try connecting Xiaomi to a 5GHz network instead of 2.4GHz. Despite the smaller coverage area, this range is less crowded and provides a more stable speed. 8A) Not supported by 5 GHz.

3. Update firmware and reset network settings

WiFi failures are often associated with bugs in specific versions. MIUI — This is especially true for betas and the first releases of global firmware. MIUI 14 for Xiaomi 12T There was a bug that caused the phone to lose connection when it locked the screen. V14.0.4.0.TLBMIXM.

To update the firmware:

1. Go to Settings → About the phone → System update.
2. Click on “Check Updates” and wait for the latest version to load.
3. If the update does not come, try to manually download the backup firmware from the official Xiaomi website and install it through Settings → About phone → System Update → Three points → Select a firmware file.

If the update does not help, reset the network settings:

1. Open Settings → Connections → More → Reset your WiFi, mobile network and Bluetooth settings.
2. Confirm the action. The phone will reboot and all the stored networks will be deleted.

4. Energy saving and background activity setting

Aggressive battery-saving algorithms in MIUI can turn off the WiFi module when the screen is off, or limit the background activity of applications, especially on small-battery models (such as the Xiaomi 11 Lite NE or Poco X3 Pro).

To remedy the situation:

• 🔋 Open the Settings. → Battery and productivity → Battery mode and select Performance (instead of Balanced or Charge Savings»).
• 📱 Go to Settings. → Annexes → Application management → Three points. → Autorun permissions and enable autorun for WiFi-related system applications (e.g., Settings and Google Play Services»).
• 🔄 B Settings → Connections → WiFi → Additional settings turn off the option “Disable WiFi when blocked” (if any).

⚠️ Note: On some firmware (for example, MIUI EU) The option to turn off WiFi when blocked is hidden. To find it, activate the developer mode (7 times tap the version). MIUI in the phone settings) and check the section for developers → Network settings.

5. Checking hardware faults

If software methods fail, the problem may be physical damage to a WiFi module or antenna, which is true for phones that:

• 💥 Falling from a height (especially to the corner where the communication module is located).
• 🌊 Contact with moisture (even if there is no visible trace of corrosion).
• 🔧 Discovered by unqualified craftsmen (for example, after replacing the screen or battery).

How to diagnose a hardware malfunction:

1. Try connecting to WiFi in safe mode (press the power button → Safe Mode) If the network is working properly, the problem is in the software.
2. Check the signal strength in the engineering menu: ##4636## In the WiFi information section, see the RSSI value. If it is below -70 dBm even near the router, there may be problems with the antenna.
3. Connect your phone to another 5GHz router. If there is no connection, the module is faulty.

💡

If you suspect a hardware breakdown but don’t want to carry your phone to the service, try using it temporarily. USB-Type-C WiFi adapter (for example, TP-Link) TL-WN725N). He's connecting through OTG It can be a temporary solution until you fix the main module.

6. Alternative ways to address problems

If the standard methods didn’t work, try the less obvious solutions:

• 🔄 Shift. DNS: In the WiFi network settings, specify manually DNS Google (8.8.8.8 and 8.8.4.4) or Cloudflare (1.1.1.1) can make pages load faster.
• 📱 Shutdown VPN: Some of them VPN-applications (e.g. Turbo) VPN or 1.1.1.1) conflict with the WiFi module.
• 🛠️ Firmware Customization: On Forums 4PDA or XDA patches for MIUI, WiFi bug fixes, like Poco. F3 There are modes that optimize the work of 5 GHz.
• 🔋 Battery replacement: A worn-out battery (capacity below 70%) can cause all modules, including WiFi, to work in an unstable way.

For advanced users, there is another way – roll back the WiFi driver via ADB:

1. Connect your phone to your PC and activate debugging via USB.
2. Adb shell settings put global settings wifi_driver_rollback 1 This will reset the WiFi driver to the factory version.
3. Reset the device.

💡

If a WiFi problem has occurred after the MIUI update, try rolling back to the previous firmware version. To do this, download the archive with the desired version from en.miui.com and install it through Recovery (save the data in advance!).

Frequent questions about WiFi on Xiaomi