When a Xiaomi smartphone suddenly stops connecting to a wireless network, it can be taken by surprise at the most inopportune moment: You try to load a page, send a message or just watch a video, but the WiFi icon either disappeared or shows a constant connection process. This is a common problem that can be caused by both a software glitch in the MIUI shell and a conflict of router settings.
Before you panic and bring a device to a service center, it is worth conducting a deep diagnostic of the system. Often the reason lies in incorrectly stored network parameters or temporary hanging of the network module. In this article, we will discuss all possible reasons why the Internet stopped working, and provide working methods for eliminating them.
Sometimes the problem may be hardware, like oxidizing the antenna contacts after falling or getting moisture, but statistics show that more than 80 percent of the problems are solved by software, so let's see what steps to take first.
Primary diagnostics and basic checks
The very first thing you need to do is to reboot the device, which many users ignore, believing that it is ineffective, but it is the reboot that clears the RAM and resets the temporary driver errors. If the problem persists after turning on the smartphone, proceed to check the flight mode.
Activating and then deactivating the flight mode allows you to force the radio to restart the radio module. To do this, lower the notification curtain and find the aircraft icon. Turn it on for 10-15 seconds, and then turn it off. This action often helps if the signal is lost due to a malfunction of the network adapter.
- 📱 Check if the WiFi module itself is on in the notification curtain.
- ✈️ Use flight mode to restart radio frequency modules.
- 🔄 Perform a full reboot of the device through the power menu.
- 📶 Make sure that the Internet is stable on other devices in the house.
It is also important to check whether the power saving function is activated, which can aggressively restrict the operation of background processes and network modules.In some versions of MIUI, the "Energy Saving" mode can block the connection to the grid to save battery power.
⚠️ Note: If the WiFi indicator is gray and not turned on at all, this may indicate a more serious firmware failure or damage to the system files responsible for the operation of drivers.
It is not superfluous to check the date and time on the device. Incorrect time settings can lead to errors when installing a secure connection to the router, since the security certificates will be considered invalid.
Resetting network settings and removing profiles
If the basic methods didn't work, you need to go to a deeper analysis of the connection settings. Often, the phone's memory stores erroneous configurations for the networks the device previously connected to, and this is especially true if you've recently changed your password or security settings on the router.
The first step is to remove the network that is problematic. Go to the settings menu, select the WiFi partition, find your network in the list, click on it and select Delete or Forget the network. Then try to re-enter the password, which causes the phone to re-enter the authorization procedure and handshake with the access point.
A more radical but effective method is to completely reset your network settings. Note that this step will delete all stored WiFi passwords, Bluetooth headset settings, and mobile network settings, but will not affect your personal files, photos, or contacts.
☑️ Preparation for network reset
To perform the reset, go to Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. Press Reset and confirm action. Once rebooted, the phone will have clean network settings, which often eliminates software conflicts.
In some cases, manual input helps. DNS-If the automatic receipt of addresses does not work, you can register public DNS This is especially useful if the provider is blocking access or if the router is not giving out correctly. DNS-request.
Problems with the frequency range and router channel
Modern Xiaomi smartphones support two bands: 2.4 GHz and 5 GHz. However, older models or devices with stripped-down modules may not work properly with certain channels or channel width. If the phone sees the network but does not connect, it may be due to ether overload.
The 2.4 GHz band is often overflowing with signals from neighbouring routers, microwaves and Bluetooth devices, in which case the phone may lose data packets or refuse to establish a connection altogether. Switching to the 5 GHz band, if the router supports this feature, often solves the stability problem.
- 📡 Try to separate the 2.4 GHz and 5 GHz network names in the router settings.
- 🔀 Change the broadcast channel in the router settings to less loaded.
- 📉 Reduce the channel width to 20 MHz for greater stability.
- 🏠 Check if the signal is not shielded by metal structures.
Some older Xiaomi devices may not work properly with the latest WPA3 security standards. If you have this protocol installed, try temporarily switching your router to WPA2-PSK (AES) to check compatibility.
Another reason could be the “Speed Optimization” feature in Xiaomi routers or other brands, which dynamically switches devices between bands. Sometimes this mechanism fails and the phone gets stuck between frequencies.
Date, time and DNS settings
As mentioned earlier, time out-of-synchronization is a common but overlooked cause of connectivity problems. Security protocols require that client and server time coincide with a minimum error. If time is down, handshake doesn't pass, and the phone writes "Receipt" IP-"addresses.
Check the settings in the section Additional → Date and time. Make sure to check the tick "Use network time." If the time is set manually, correct it to the current. Also check the time zone - it should correspond to your region.
Second important aspect — DNS. Providers sometimes provide unstable DNS-You can manually prescribe alternate addresses in your WiFi settings. To do this, click on the arrow next to the network name, find Settings. IP and switch with DHCP static.
| Parameter | The Importance to Google DNS | Importance for Cloudflare |
|---|---|---|
| DNS 1 | 8.8.8.8 | 1.1.1.1 |
| DNS 2 | 8.8.4.4 | 1.0.0.1 |
| Gateway | 192.168.1.1 (depends on the router) | 192.168.1.1 (depends on the router) |
| Length of prefix | 24 | 24 |
Once you've entered, save your settings and try to connect, and if the Internet came along, then the problem was routing requests through the ISP's servers, which is a temporary solution, but it allows you to stay online.
⚠️ Attention: When manually entered IP-Make sure the gateway address matches your router's address, usually 192.168.0.1 or 192.168.1.1, but may vary depending on the device model.
Impact of MIUI updates and reset to factory
Updating MIUI or Android is always a lottery, and on the one hand, security patches and new features, on the other, possible bugs that developers didn't notice when testing, and if WiFi stopped working immediately after the update, there's a high probability of a software conflict.
In this case, you can try to clear the cache of the system services responsible for the network. Go to Settings → Applications → All applications, search the list of "WiFi", "Google Play Services" and clear their cache. Don't confuse it with deleting data, although in the case of WiFi system services, this is sometimes necessary.
If nothing works, the last resort is a full factory reset, which will remove all data from your phone, so make sure you back up before resetting, make sure that the battery is at least 50%.
To perform the reset, go to Settings → About Phone → Settings Reset → Erase all data. After that, the phone will return to the “out of the box” state. If that didn’t work, the problem is likely hardware in nature.
Hardware malfunctions and module repairs
When all software methods are exhausted, we have to talk about hardware. In Xiaomi smartphones, especially the budget series Redmi and Poco, the WiFi module is often sold directly on the motherboard or combined with a processor and Bluetooth.
The cause of the failure can be overheating. Prolonged games or the use of a navigator when charging leads to the degradation of contacts under the chip. As a result of microcracks in the soldering, the contact disappears, and the phone stops seeing the networks or sees them, but does not connect.
- 🔥 Overheating of the case can lead to detachment of contacts of the WiFi module.
- 💧 The ingestion of moisture causes corrosion of the antenna tract even after a while.
- 📉 Shocks and falls violate the integrity of plumes or soldering components.
- 🔌 Using non-original chargers can cause voltage surges.
It's hard to diagnose a hardware problem at home, but if you tap on the back, it goes away, which is a sure sign of a breach of contact, and a complete gray WiFi icon is also a sign of a hardware malfunction, which doesn't turn on even after flashing.
Repairs then require skilled intervention using a soldering station and a microscope, a wizard can rebolling (replacing the solder under the chip) or replace the module itself, and in some cases it is cheaper and easier to replace the motherboard entirely.
⚠️ Warning: Self-opening of the phone and trying to warm up the hair dryer without skills can finally disable the device or damage the battery, which is dangerous by fire.