When Xiaomi’s smartphone stops seeing wireless, it often comes on suddenly and takes the user by surprise, which can happen after a system update, a change in router settings, or a spontaneous software failure, which owners of Redmi and Poco devices experience as much as users of other brands, and the problem is rarely hardware failure.
In most cases, the Wi-Fi module is functional, but a software conflict or driver failure prevents it from working correctly, you should not panic and carry the gadget to the service center immediately. Often it is enough to perform a series of simple steps to reboot services or change security settings.
Below we will discuss in detail the diagnostic algorithms that will help restore Internet access, how to check static IP, why channels 12 and 13 may not be available, and when a full reset is really required.
Diagnostics of hardware and software failures
The first thing you need to do is figure out the scale of the problem, and if the phone doesn't connect to any network, including the distribution from another smartphone, it's probably the device itself, and when other gadgets are working properly, you should look at the router and its configuration.
A common cause is a simple hanging of the communication module. Android sometimes mismanages power consumption, causing the wireless adapter to simply fall asleep and not wake up, in which case a simple reboot of the device helps 80% of the time.
It's also worth checking if the module itself is on. Sometimes users accidentally activate In-Airplane mode or turn off Wi-Fi through the control panel. Make sure the slider is active and the phone starts scanning the available access points.
⚠️ Warning: If the phone doesn’t see any network at all after the reboot and there is no connection list available, this could indicate a critical driver failure or physical damage to the antenna plume.
For a deeper diagnosis, you can use the built-in tools. Go to the settings menu and find the "About Phone" item. Click the kernel version or MIUI several times to open the extended menu, where error logs are sometimes available.
- 📡 Check if other devices can see your Wi-Fi network.
- 🔄 Perform a full smartphone reboot, not just turn off the screen.
- ✈️ Make sure that the "In the plane" mode is turned off and turned on again.
- 🔋 Check the battery level as energy saving can block the module.
Basic methods of reconnection
If a simple reboot didn't work, you need to move to more proactive action, often by forgetting the network, and the phone might have saved a faulty security setting or password that changed on the ISP side.
Go to your Wi-Fi settings, click on your network name, and select "Delete" or "Forget this network." Then re-enter the password, which clears the cache of connections and forces the system to re-enter the authorization procedure.
Another effective method is resetting your network settings, which is not going to delete your photos or contacts, but it's going to bring all network settings back to factory values. You're going to have to re-enter passwords from all Wi-Fi networks, but that often solves the problem of conflict. IP-address.
☑️ Checklist for quick recovery
It is important to make sure that the phone has the correct date and time, and mismatching the time zone or date can lead to security certificate errors, which will cause the connection to break immediately after the connection is established.
Switching between frequency bands sometimes helps. If your router is dual-band, try connecting to a 5GHz network instead of 2.4GHz or vice versa. The 2.4GHz range has a longer range, but is more prone to interference.
Router settings and frequency channels
One of the most common reasons Xiaomi doesn’t see Wi-Fi is that it’s not compatible with the router and smartphone settings, especially when it comes to regional settings and channel choices.
In some countries, the use of certain channels (for example, 12 and 13 in the 2.4 GHz band) is limited by law. If the phone settings are “USA” and the router is broadcasting on Channel 13, the smartphone simply “will not see” this network.
To fix this, you need to log into your router's settings via your browser (usually at 192.168.0.1 or 192.168.1.1).Look for the Wireless partition and change the channel from "Auto" to a fixed one, such as 1, 6 or 11.
Recommended channels: 1, 6, 11 (for 2.4 GHz)
Recommended channels: 36, 40, 44, 48 (for 5 GHz)Modern Xiaomi phones work best with WPA2-PSK (AES) protocol. Using outdated TKIP or mixed WPA/WPA2 mode can cause instability.
Why is the region important in settings?
If you have an old router, it may not support the standards that the new phone “requires,” but try changing your wireless mode to a mixed one, such as 802.11 b/g/n mixed, instead of purely n or ac.
Problems with IP-address DNS
A common mistake is conflict. IP-If two devices on your network are trying to use the same address, or if DHCP-The router server gave the wrong address, there will be no connection. IP-address".
The solution is to change your IP settings from DHCP to Static, and to do so, click on the arrow or gear icon next to your network in the Wi-Fi list and select "IP settings."
| Parameter | Value for static IP | Description |
|---|---|---|
| IP-address | 192.168.1.150 | Unique phone address on the network |
| Gateway | 192.168.1.1 | Address of your router |
| Length of prefix | 24 | Standard subnet mask |
| DNS 1 | 8.8.8.8 | Google Server (alternative to the provider) |
Change of change DNS-servers can also help if the provider blocks some requests or slowly processes domain names. DNS Google or Cloudflare often speeds up network response.
Enter 8.8.8.8 in the DNS field 1 and 8.8.4.4 in the DNS field 2. After saving the settings, try reconnecting. If the phone says "Authentication Error", then the problem is not in the IP, but in the password or type of encryption.
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If you change your IP settings to static, make sure that the address you select (the last digit) is not occupied by another device on your network, otherwise there will be a conflict.
Specific MIUI functions and energy saving
The MIUI shell is known for its aggressive energy-saving system, which can force a Wi-Fi module to shut down if it thinks an application using the network is inactive or if the battery is low.
Check the battery settings. Go to Settings → Battery → Energy Saving. Make sure that the ultra-energy-saving mode that restricts background activity and network connections is not activated.
There's also a Wi-Fi Assistant feature that switches the phone to the mobile Internet if the Wi-Fi signal seems weak, which can create the illusion that Wi-Fi is not working, even though the phone is simply ignoring it.
- 🔋 Turn off the energy saving mode for the test.
- 📶 Turn off the Wi-Fi Assistant in the advanced Wi-Fi settings.
- 📱 Check the application rights to access the network in the background.
- 🛡️ Make sure that the antivirus does not block the connection.
Sometimes the problem is with a particular application. If the Internet doesn't work with only one program, check its permissions. In the application settings, find the right one, select "Other permissions" and make sure that access to Wi-Fi is allowed.
⚠️ Note: Dual-band Wi-Fi on some routers can cause cyclic reconnection if the phone is constantly tossed between 2.4 and 5 GHz frequencies (SSID).
Radical measures: Resetting and reflashing
If the software methods do not help, there is the option of a complete reset, which will delete all data from the phone, so be sure to back up your contacts and photos to the Mi Cloud cloud or your computer.
Reset is done via the Recovery menu or system settings. From the settings menu, select "Advanced Settings" → "Recovery and Reset" → "Resettings".
In rare cases, the problem may be to damage system files after a failed update, then only flashing the device through the computer using the Mi Flash Tool utility will help. This requires certain skills and downloading the official firmware for your model.
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Full Factory Reset eliminates 99% of network software errors, but requires a full backup of the data before starting the procedure.
Once reset, the phone will return to the "out of the box" state. When you first set up, connect to Wi-Fi. If the problem persists even on clean software without installed applications, there is a high probability of hardware failure.
Hardware malfunctions of the module
When all the software methods are exhausted, you have to talk about hardware. In Xiaomi smartphones, the Wi-Fi module is often combined with the Bluetooth module. If you have both Bluetooth and Wi-Fi stopped working at the same time, it is almost guaranteed a hardware defect.
The cause may be the antenna plume's drifting away after falling or getting moisture, and the Wi-Fi chip itself on the motherboard may fail, often due to overheating or power surges when charging.
Diagnostics at home are limited. You can gently tap your finger on the back cover in the camera area (where the module is often located), but this is a temporary measure. Accurate diagnosis and repair requires disassembly of the device and multimeter check.
In case of hardware breakdown, self-repair is not recommended, as soldering is required. BGA-Components or replacement of complex plumes.