The situation when on a smartphone Xiaomi or Redmi A sudden loss of wireless connectivity often catches users off guard. You try to activate the slider in the notification shade, but it either immediately returns to its original position or hangs in "Turning on..." mode for a long time without completing the process. This could be due to a software glitch in the shell. MIUI, as well as with more serious hardware problems.
Owners of devices often face the problem that communication module The device simply stops responding to system commands. In some cases, the problem stems from a conflict with recently installed apps or updates, while in others, it stems from physical damage to the antenna after a fall. Understanding the nature of the problem is the first step to successfully restoring the device's functionality without taking it to a service center.
Before panicking and taking your phone to a repairman, it's worth trying a number of software methods that work in most cases. Below, we'll detail the steps you can take to identify the cause and fix the connection error.
Basic diagnostics and quick solutions
The simplest and most often overlooked method is a full device reboot. Many users simply turn the screen off and on, believing that this is sufficient, but the system requires a full power cycle to clear temporary driver errors. If the situation persists after a reboot, it's worth checking whether the system was accidentally activated. airplane mode, which blocks all radio modules.
Sometimes the problem is temporary and related to overheating of the processor or the WiFi module itself. If the phone has been exposed to direct sunlight or under heavy load for a long time, let it cool down. Also, make sure there are no metal parts or cases with magnetic elements on the case, which could block the signal and cause antenna malfunction.
⚠️ Note: If your phone has recently been dropped or impacted, the problem may be a disconnected antenna cable from the motherboard. In this case, software solutions may not help.
To quickly check your network status, you can use the built-in diagnostic tool. Go to Settings and find the section responsible for wireless connections. There's often a network test feature there that will automatically identify simple configuration errors.
- 🔄 Restart your smartphone by holding the power button for 10 seconds.
- ✈️ Toggle Airplane Mode on and off three times in a row.
- 🔋 Check the battery level, as some modules may shut down when the voltage is low.
- 📱 Remove the protective case and test the WiFi without it.
Software failures and network settings
If basic methods don't help, it's likely that your network settings are corrupted or that software garbage has accumulated in your configuration files. Shell MIUI Network service cache errors tend to accumulate, especially after an operating system update. In this case, a network settings reset is an effective solution, which will restore WiFi, Bluetooth, and mobile data settings to factory defaults without affecting your personal files.
To perform this operation, you need to go to the settings menu. Find the section Connections and Sharing or Advanced settings, where the reset point is located. The system will warn you that all saved WiFi network passwords will be deleted, so make sure you remember your router access details.
Another common reason is conflict. static IP addressIf you previously manually entered an IP address for a particular network, and the router changed the address range, the phone will not be able to connect. Make sure that the specific network settings are set to obtain an IP address automatically (DHCP).
☑️ Reset network settings
It is also worth paying attention to the "WiFi Assistant" function or similar speed optimizers built into XiaomiThey can automatically disable the wireless connection if they detect a weak signal, switching to mobile data. Disable this feature in your WiFi settings to prevent false alarms.
MAC address and router issues
Modern Android versions and shells MIUI By default, routers use a randomized MAC address to enhance privacy. However, some older routers or corporate networks may block connections from devices with a modified MAC address. If your phone sees the network but won't connect, try changing the MAC address type in the advanced WiFi settings from "Random" to "Device MAC Address."
You shouldn't rule out problems with the access point. The router may be overheating, freezing, or have a full client table. Try rebooting the router by unplugging it for 30 seconds. Also, check if your router has MAC address filtering enabled, which could have accidentally blocked your connection. Redmi.
| Type of problem | Symptom | A probable solution |
|---|---|---|
| IP conflict | Error "Obtaining IP address" | Reset network settings |
| Router filtering | It sees the network, but doesn't let it in. | Changing MAC to "Device" |
| Module overheating | WiFi turns off by itself | Cooling the phone |
| Driver failure | The slider does not activate | Reboot or flash |
What is MAC address randomization?
This is a security feature that changes your device's unique identifier each time you connect to a new network to prevent providers from tracking your movements. However, on home networks, this sometimes causes conflicts.
Impact of updates and third-party applications
Users often notice that WiFi stops working immediately after a system update. New versions MIUI They may contain bugs that developers typically fix in subsequent patches. If the problem appears after an update, it's worth waiting for the next update or, if you have the necessary skills, rolling back to the previous stable firmware version.
Third-party applications, especially so-called "accelerators," "memory cleaners," or VPN services, can hijack control of network interfaces. If you have such software installed, try uninstalling it or temporarily disabling it. Sometimes even antivirus programs can block connections, mistaking network traffic for a threat.
To identify the culprit, you can run the phone in safe modeIn this state, only system apps load. If WiFi works reliably in Safe Mode, the problem is definitely with one of your installed apps.
⚠️ Note: The menu interface may differ depending on the MIUI version (12, 13, 14, etc.). The layout of the items is subject to change by the developers.
WiFi module hardware failure
If no software methods, including a full factory reset (hard reset), help, there is a high probability of a hardware failure. In smartphones Redmi The WiFi module is often integrated into the main board along with Bluetooth. A drop, impact, or exposure to moisture could cause the connection to come loose or the chip itself to burn out.
Symptoms of hardware failure include: a gray WiFi icon that won't click at all; constant connection drops even near the router; or a complete failure to search for networks, even when other devices within a meter can see them. In such cases, the device must be disassembled and diagnosed using specialized equipment.
Sometimes, heating the modem area (for experienced users only!) can help if the cause is a micro-crack in the solder joint, but this is a temporary measure. The safest solution is to contact an authorized service center for module replacement or component resoldering.
Factory reset as a last resort
If you're willing to risk data loss to test the hypothesis of a software glitch, you can perform a hard reset. This procedure will delete all apps, photos, contacts, and settings, returning the phone to its out-of-the-box state. This is the most drastic, but also the most effective, way to rule out software errors.
Before you begin, make sure your phone is charged to at least 60%. Go to Settings → About phone → Factory data reset → Erase all dataThe process will take a few minutes, after which the phone will turn on like new. If the WiFi still doesn't work after the setup, it's a 100% confirmation of a hardware problem.
Without this, the phone may be locked due to the security system.
Frequently Asked Questions (FAQ)
Why does WiFi turn on and then turn off immediately on my Redmi?
Most often, this indicates overheating of the communication module or a software driver conflict. It's also possible that the battery isn't supplying enough voltage to power the module, or there's physical damage to the antenna cable inside the case.
How do I turn on WiFi if the slider is gray and won't click?
Try restarting your phone. If that doesn't help, check that Airplane Mode isn't enabled. In rare cases, resetting network settings can help. If the slider remains grayed out after resetting, there's likely a hardware problem.
Can a virus disable WiFi on a phone?
Yes, malware can block network connections or redirect traffic. Scan your device with an antivirus and remove recently installed apps from unknown sources.
Does the case affect WiFi performance?
Thick cases with metal inserts or a thick rubber layer can significantly weaken the signal, especially if the antennas are located around the perimeter of the case. Try removing the case and checking the connection quality.