A situation when your smartphone Xiaomi or Redmi When a phone suddenly stops detecting wireless networks or refuses to connect to the router, it's understandably frustrating. This happens at the most inopportune moments: during an important call, watching a movie, or downloading updates. Users often encounter the connection indicator spinning endlessly, or the phone displays "Connection failed," even though the internet is working reliably on other devices.
The problem may lie in a banal software failure of the operating system MIUI or HyperOS, as well as more complex driver conflicts or router settings. Unlike other manufacturers, Xiaomi has its own specific energy-saving and network module management features, which can sometimes aggressively throttle background processes. In this article, we'll examine all possible reasons why Wi-Fi isn't working on Xiaomi Android devices and offer a step-by-step plan for restoring the connection.
Before panicking or taking your device to a service center, it's worth running a basic diagnostic. Often, the solution lies in a simple reboot or changing a single setting in the developer menu. We'll cover both simple methods accessible to everyone and advanced settings for experienced users, so you can get your device back up and running as quickly and efficiently as possible.
Basic diagnostics and quick solutions
The first step should always be a basic check of the communication module's status. Sometimes the system simply "hangs" in an attempt to save power or due to an error in a background process. Try disabling Wi-Fi and then re-enabling it through the control panel. If that doesn't help, activate airplane mode for 10-15 seconds, then turn it off. This will force a restart of all radio modules in the smartphone, including Bluetooth and cellular.
The next critical step is to reboot your router. Even if other devices are working fine, your phone could have received a broken IP address or been blacklisted by the access point. Unplug the router for 30 seconds, plug it back in, and wait for it to fully boot up. Then try connecting. Xiaomi again, after deleting the saved network in the settings.
⚠️ Note: If your phone connects after rebooting your router, but the internet still doesn't work, the problem may be with your internet provider. Check your balance and service status in your internet provider account.
If simple methods don't work, it's worth checking if the "Wi-Fi Assistant" feature is enabled. This MIUI option automatically switches your device to mobile data if the Wi-Fi connection seems unstable, which can create the illusion of a breakdown. Go to Settings → Wi-Fi → Wi-Fi Assistant and turn off the "Switch to mobile data" switch.
☑️ Quick diagnostics
Date, time, and DNS issues
One of the most subtle reasons why a Xiaomi phone won't connect to Wi-Fi is a misplaced date and time. Security protocols SSL/TLSThe security certificates used by most modern websites and services strictly check timestamps. If your device has an invalid date (for example, 2015), the security certificates will be considered invalid, and the connection will be terminated immediately after being established.
To fix this, go to Settings → Additional settings → Date and timeMake sure "Use network time" is enabled. If the problem persists, try manually setting the current date and time, then switching back to automatic. This often helps reset the system's sync services.
The second important aspect is DNS settings. Providers often use their own name servers by default, which can be slow or block access to certain resources. Changing your DNS to public, fast servers from Google or Cloudflare can not only speed up page loading but also resolve connection issues.
To change DNS, follow these steps:
- 📱 Go to Wi-Fi settings and click on the arrow next to your network.
- 📝 Find the "IP Settings" item and change the value from DHCP to Static.
- 🔢 In the DNS 1 field, enter
8.8.8.8, and in DNS 2 -1.1.1.1. - ✅ Save the settings and try connecting.
Frequency conflicts and bands 2.4 GHz and 5 GHz
Modern routers often operate in two bands: 2.4 GHz and 5 GHz. Older or budget smartphone models Redmi And Poco may only support the 2.4 GHz frequency. If your router broadcasts only the 5 GHz network or combines them into a single network with a specific name (SSID), your phone may simply not see the network or refuse to connect due to protocol incompatibility.
Furthermore, the 2.4 GHz band is very noisy in apartment buildings. Neighbors' routers, microwaves, and Bluetooth devices create a "mess" of signals. In such cases, the phone may see the network, but the connection will constantly drop. The solution is to separate the networks on the router, giving them different names (for example, Home_2.4 and Home_5G), and connect the phone to the correct frequency.
It's also worth paying attention to the broadcast channel. It's best to set the channel manually in your router settings (usually in the Wireless Settings section). For 2.4 GHz, channels 1, 6, or 11 are optimal. For 5 GHz, you can choose any available channel with a bandwidth of 40 or 80 MHz.
| Parameter | 2.4 GHz band | 5 GHz band |
|---|---|---|
| Speed | Up to 150-300 Mbps | Up to 1 Gbps and higher |
| Range | High (breaks through walls) | Low (doesn't handle obstacles well) |
| Workload | Very high | Low |
| Compatibility | Supports all devices | Only modern gadgets |
Reset network settings and restore the system
If software conflicts persist, a full network reset may be necessary. This will erase all saved Wi-Fi passwords, Bluetooth device settings, and mobile data settings, returning the network modules to factory defaults. This often helps when the phone displays "Authentication Error" or "Obtaining IP Address."
To perform a reset on Xiaomi, follow this path: Settings → Connection and sharing → Reset Wi-Fi, mobile networks, and BluetoothClick the "Reset Settings" button at the bottom of the screen. After the reboot, you'll need to re-enter your home network password.
In more complex cases, when the problem occurs after a firmware update, resetting all settings to factory defaults may help. Attention: This will delete all your data, photos, and apps. Before doing this, be sure to back up your data to Mi Cloud or your computer.
⚠️ Note: The MIUI menu interface may differ depending on the version of the shell (MIUI 12, 13, 14, or HyperOS). If you don't find the reset option in the specified path, use the settings search and enter the word "Reset."
Hidden menus and engineering settings
Advanced users can check the Wi-Fi module's status through the engineering menu. This diagnostic tool allows you to see the actual signal strength and driver status. To access it, open the "Phone" app and enter the code ##6484##.
In the CIT (Customer Information Test) menu that opens, find the item WiFiRun the test. The system will prompt you to enable Wi-Fi and scan for networks. If the test fails or returns an error, this may indicate a hardware fault with the antenna or chip.
What should I do if the test in the engineering menu fails?
If the built-in test shows an error, software methods (resetting, flashing the firmware) will likely not help. This is a clear sign of a hardware problem. Perhaps the antenna connector inside the case has come loose or the Wi-Fi module has failed. Disassembly and diagnostics at a service center are required.
You can also find the "Wi-Fi Aggregation" option in the developer menu. This allows the phone to simultaneously use Wi-Fi and mobile data to speed up downloads. However, on some Xiaomi models, enabling this feature can cause connection instability. Try disabling it if you notice stuttering in online games or videos.
Hardware failures and overheating
Physical damage also cannot be ruled out. If the phone was dropped, it may have gotten wet, or it may have been exposed to extreme heat (for example, left in the sun or used for heavy gaming while charging). Wi-Fi module — a sensitive component, and prolonged operation at high temperatures could lead to contact failure.
Symptoms of hardware failure:
- 🔥 The phone gets very hot in the upper part of the case when trying to turn on Wi-Fi.
- 📉 The signal is only received in close proximity to the router (1-2 meters).
- ❌ The Wi-Fi enable button in the settings is grayed out and cannot be activated.
- 🔄 Constant connection breaks even with a perfect signal.
If these symptoms occur, software repair is ineffective. The only solution is to replace the antenna module or have the chip resoldered at a specialized service center. Unexperienced and unequipped repairs can render the device completely inoperable.
Frequently Asked Questions (FAQ)
Why does Xiaomi say "Connected, no internet access"?
This means there's a connection to the router, but the router isn't transmitting data. Check the ISP cable connected to the router's WAN port and whether the WAN indicators are lit. The problem could also be an incorrectly set time on your phone.
How to update the Wi-Fi driver on Xiaomi?
You can't download the driver separately. The communication module is updated only with the system update. Go to Settings → About phone → MIUI version and check for updates.
Does the case interfere with Wi-Fi?
Yes, if the case has a metal base, magnetic closures, or is very thick. Metal shields the signal from the antennas, which are usually located at the top or bottom of the smartphone.
Will resetting network settings delete my photos and contacts?
No, resetting network settings only affects connection settings (Wi-Fi, Bluetooth, and mobile network). Your personal files, contacts, and apps will remain intact. A complete data wipe occurs only when you select "Factory Reset."