Why Xiaomi doesn’t run Wi-Fi: A full analysis of problems and solutions

Have you encountered the fact that Xiaomi smartphone stopped working Wi-Fi? the network is lost, then not connected at all, and reboot does not help? This problem is familiar to many owners of devices of the brand — from budget Redmi to flagship Xiaomi 14. MIUI, and in the hardware faults of the communication module.

In this article, we’ll look at all the possible reasons why Wi-Fi doesn’t work on Xiaomi, from simple setup errors to serious antenna breakdowns, how to diagnose a problem yourself, which settings to check first, and when to contact a service center. And most importantly, get step-by-step instructions to eliminate each of the causes, including hidden functions. MIUI, which are not written in official documentation.

Don't rush to drop your phone to factory settings or carry it for repair. 80 percent of the time, you can fix the problem in 5 to 10 minutes, following our guidelines, start with the simplest and gradually move on to the hardest cases.

1. Checking the basic settings: what could have gone wrong

Before digging deeper, make sure that the problem isn't in the basics. Often users overlook the obvious, spending hours looking for non-existent faults.

The first thing you need to do is to reboot your smartphone, which is trivial, but it helps in 30 percent of cases, because the Wi-Fi module in Xiaomi sometimes freezes because of a conflict with the background, and the reboot reset resets its state, and if the problem persists after the reboot, we move on.

• 📶 Flight mode. Make sure it's off. MIUI There's a bug: sometimes the flight mode is activated spontaneously after updating or connecting to Bluetooth devices).
• 🔄 Automatic connection. Go to Settings. → Wi-Fi and check if Auto Connection is enabled. If not, turn it on. Also note the list of saved networks: your network may be marked as Low Quality. MIUI 14+ there's a marker).
• 🔒 Background restrictions. MIUI There's a battery optimization feature that can block Wi-Fi in the background. → Battery → Optimizing the battery → Find network-related applications (such as “Wi-Fi Settings”) and turn off optimization for them.

If the basic settings are fine, but the Wi-Fi still doesn't work, we move on to a deeper diagnosis, and maybe the problem is a conflict with the firmware or hardware failure.

2. Programmatic failures MIUI: How to fix without resetting

Operating envelope MIUI It's known for its chips, but it's also bugs, and often Wi-Fi problems arise after you upgrade your system or install custom firmware.

Network resets are the first thing you should try, and they will delete all the stored networks and connection settings, but they won't affect your personal data.

1. Go to Settings. → Wi-Fi.
2. Stick to three points (⋮) top-right.
3. Select “Moreover» → «Resetting network settings».
4. Confirm the action and restart the phone.

If it didn't work, the problem could be in the cache system. Clearing the cache doesn't delete the user's data, but resets temporary files that could have been corrupted.

1. Turn off the phone.
2. Press the Power + Volume buttons up at the same time until the Mi logo appears.
3. In the Recovery menu, select “Wipe Cache” (use volume buttons for navigation, power for confirmation).
4. After cleaning, restart the device.

Another common cause is conflict with VPN Or a proxy, if you're using it. VPN-Applications (e.g. 1.1.1.1 or NordVPN) can block the connection to Wi-Fi:

• Shut down. VPN appliance.
• Delete profile VPN In Settings → Connections → VPN.
• Reset proxy settings: Settings → Wi-Fi → Additionally. → Proxy settings → Choose "No».

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After the update MIUI Wi-Fi stopped working, try to roll back to the previous firmware version via the Mi Flash Tool. 4PDA model-themed.

Router problems: why Xiaomi doesn’t see the network

Sometimes the problem is not the phone, but the router, especially if other devices (laptop, tablet) can't connect to Wi-Fi, and let's look at typical scenarios and solutions.

Incompatibility of Wi-Fi standards: modern Xiaomi smartphones support standards 802.11 a/b/g/n/ac/ax (Wi-Fi 6), But some old routers only work in mode. 802.11b Or n, it can cause conflict. How do you check:

1. Go to the router’s web interface (usually at 192.168.0.1 or 192.168.1.1).
2. Find the section "Wireless" (Wireless).
3. See what standard you've selected in the settings. 802.11b, swap for 802.11b/g/n mixed.

Network encryption: Xiaomi sometimes conflicts with outdated types of encryption, such as, WEP or TKIP. The best option — WPA2-PSK (AES). If your router supports WPA3, Try it out, but note that some Xiaomi models (especially those on Android 10 and below) may not connect to such networks.

If after changing the settings of the router Xiaomi still does not connect, try to change the network name (SSID). Sometimes the network name contains incorrect characters (e.g. Cyrillic, spaces at the beginning/end) that cause failures. Use Latin and numbers without spaces.

⚠️ Note: If your router is dual-band (2.4 GHz) + 5 GHz), try connecting separately to each range.Some Xiaomi models (like the Redmi Note 8 Pro) have problems switching between ranges automatically.

4. Hardware malfunctions: when diagnostics are needed

If the software didn't work, maybe the problem is the hardware, which is a more serious case, but you can diagnose it yourself.

Wi-Fi antenna damage is one of the most common hardware malfunctions, and the antenna can come off when the phone falls or when the body is disassembled.

• Wi-Fi only works next to the router (the signal disappears in 2-3 meters).
• The network is connected, but the speed is extremely low (for example, 1-2 Mbps instead of 50 Mbps).+ Mbit/s).
• Bluetooth is also unstable (often these antennas are combined).

You can check the antenna using a test ##4636## (Type this code into the Phone app as a number. In the Phone Information menu, find the Wi-Fi section and see the signal level (RSSI). If it's lower. -70 dBm when near the router is a sign of poor antenna contact.

Wi-Fi module problems are less common, but they are also possible, and the module can fail due to overheating, moisture or a surge in voltage.

• Wi-Fi is not turned on at all (the gray button in the settings).
• The phone doesn't see any network, although other devices do.
• In #4636###, the Wi-Fi section has the status of Unavailable.

If you suspect a hardware malfunction, you can try reflashing the Wi-Fi module (only for power users!).

1. Disassemble the phone and find the module (usually located next to the main board and marked as WCN or BCM).
2. Connect to him through it. UART-port.
3. Switch the original firmware (files can be found on the 4PDA model-themed).

⚠️ Attention: Self-flashing of the Wi-Fi module can lead to its complete failure.If you are not sure of your skills, it is better to contact the service center.The cost of repairing the antenna or replacing the module in the official Xiaomi SC starts from 1,500 rubles.

5. Conflicts with custom firmware and root rights

If you have installed custom firmware (e.g. LineageOS, Pixel Experience) or obtained root access, the Wi-Fi problem may be related to:

• 📱 Incorrectly stitched modems, custom firmware often lacks original drivers for the Wi-Fi module.
• 🔧 Changed settings build.prop. Some tweaks to increase performance can break the network.
• 🛡️ Modules like Universal SafetyNet Fix sometimes conflict with system services.

To diagnose the problem:

1. Check the Wi-Fi error log with the command: adb logcat | Grep Wifi Search for lines from ERROR or FAILED.
2. If you use Magisk, try disabling all modules and restarting.
3. Make sure that firmware is present in the firmware for your Wi-Fi module (files are usually in the file file file). /vendor/firmware).

If Wi-Fi stopped working after firmware, try:

• Back on the stock. MIUI Using the Mi Flash Tool (Clean All option).
• Switch only the modem partition (the file is usually called the modem partition). NON-HLOS.bin).
• Install firmware that supports your region (e.g. Global instead of China).

Check logs through adb logcat

Disable all Magisk modules

Make sure that firmware files are available

Switching the original modem

Back on stock MIUI

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6. Hidden functions MIUI: What's in the way of Wi-Fi?

V MIUI There are a few hidden features that can affect how Wi-Fi works, and they're often overlooked, but they can both break the connection and restore it.

Power saving mode Wi-Fi. MIUI 12+ There's a feature that turns off Wi-Fi when the phone is locked to save charge:

1. Go to Settings → Battery → Energy Saving Mode.
2. Select "Settings" (cog in the upper right corner).
3. Turn off the option “Stop Wi-Fi in Sleeping Mode”.

Background Limitation for System Applications. MIUI It aggressively optimizes background processes, including those that run the network, to remove constraints:

1. Go to Settings → Applications → Application Management.
2. Stick to three points (⋮) → «Special access» → «Optimizing the battery».
3. Find “Wi-Fi settings” and select “No restrictions”.

Hidden Wi-Fi testing menu. Xiaomi has an engineering menu where you can manually adjust the module settings to get there:

1. Enter the code ##546## in the Phone app.
2. Choose Wi-Fi. → Wi-Fi Information.
3. Look at the status of the connection. If it's Disconnected or Authenticating, try resetting the module with the Reset button.

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If the Wi-Fi status of the Unavailable module is on the engineering menu, it almost always indicates a hardware malfunction (damage to the module or antenna).

Another useful feature is to force Wi-Fi to be turned on in modem modem modem, so if you're sharing Internet from your phone, but your Wi-Fi is turned off, do this:

1. Enter the code ##4636##.
2. Go to "Phone Information."
3. Scroll down to Wi-Fi enable in airplane mode and turn on this option.

7.When to contact the service: signs of serious breakdowns

If you’ve tried all the techniques in this article, but Xiaomi’s Wi-Fi still doesn’t work, it’s probably a hardware problem.

• 📵 Wi-Fi is not turned on at all (button in settings is inactive or gray).
• 🔌 The phone doesn’t see any network, although other devices can see.
• 🔥 Wi-Fi module is very warm (you can feel the heat in the upper part of the case).
• 🛠️ In the engineering menu (#4636##) the status of the module Unavailable or Error.
• 📡 The antenna is physically damaged (visible after disassembling the phone).

The cost of repairs in official Xiaomi service centers (as of 2026):

Before the service visit:

1. Make a backup of your data (via Mi Cloud or adb backup).
2. Check whether the warranty will be maintained after repair (in the official SCs - yes, in the informal - no).
3. If the phone is warranty, do not open it yourself - this will cancel the warranty obligations.

⚠️ Note: If your Xiaomi is caught in the rain or drowns, don’t dry it with a hair dryer or rice, which will aggravate the corrosion on the board.

FAQ: Frequent questions about Wi-Fi on Xiaomi