Many users mistakenly believe that simply updating Wi-Fi, like you do with regular apps on Google Play, is enough to improve wireless performance on their smartphone. However, in reality, the situation is mobile devices Xiaomi and Redmi devices are designed differently: there's no separate driver or program for the Wi-Fi module. The entire radio module's operating logic is deeply embedded in the firmware's system files, and it can only be changed by installing official updates for the MIUI or HyperOS operating system.
If your Redmi Note or Xiaomi Mi If your phone stops detecting networks, constantly loses signal, or only operates on the 2.4 GHz band, ignoring the faster 5 GHz band, the problem isn't a lack of updates, but a software glitch or incorrect settings. Users often look for ways to "upgrade" the receiver, not realizing that the phone's hardware isn't affected by software changes. The only legal and safe way to update Wi-Fi protocols and algorithms on a Redmi is to install the latest system software via the "About phone" menu or using a computer.
In this guide, we'll cover all available methods for resolving wireless connection issues, from standard system updates to complex manipulations of the engineering menu. You'll learn why you shouldn't download dubious "drivers" from the internet and how to properly diagnose a faulty antenna module. Understanding Android's architecture will help you avoid installing malware, which often disguises itself as useful signal-boosting utilities.
Why can't I update Wi-Fi separately on my Redmi?
Architecture of modern smartphones, including popular models Redmi And Poco, is built on the principle of a monolithic system. Unlike Windows PCs, where the user can go to the network card manufacturer's website and download the latest driver, in Android all components are tightly coupled. The wireless module is controlled by the Linux kernel, which is part of the firmware. Therefore, the phrase "update Wi-Fi" technically means "update the operating system."
Xiaomi releases security patches and connectivity improvements as part of major MIUI updates. These may include fixes for bugs that prevent the phone from connecting to certain routers or switching correctly between cell towers and Wi-Fi hotspots. If you find a separate APK file called "Wi-Fi Driver Update," there's a 99% chance you're dealing with a scam or a virus.
⚠️ Warning: Installing third-party apps that promise to "update your Wi-Fi driver" or "boost your signal by 200%" can lead to personal data theft, full-screen ads, and rapid battery drain. Rely only on system updates.
There's also the concept of regional radio module settings. Different countries have different restrictions on transmit power and available channels. Changing the region in your phone's settings (which users sometimes do to receive early updates) may change the Wi-Fi module's behavior. However, this isn't a true update, but merely a reconfiguration of existing equipment to different standards.
Official Method: MIUI/HyperOS Firmware Update
The most reliable and only correct way to get improvements to your Wi-Fi module is to check for system updates. Xiaomi engineers are constantly working to optimize network performance, and new firmware versions often contain fixes specifically for the Qualcomm or MediaTek network chips used in Redmi.
The update process is standard, but it has its nuances. It's important to ensure a stable connection during the download, as interruptions can damage system files. If your phone doesn't see over-the-air updates, that doesn't mean they're not available—servers sometimes update in waves, and your model may receive the package later than others.
☑️ Check for updates
To start the process, go to Settings → About phone and tap the current MIUI version. If the "Check for updates" button is inactive or shows that the system is up-to-date, try changing the region. Sometimes changing the region from "Russia" to "India" or "Global" (in the menu) Settings → Additional settings → Region) forces a server check for new versions.
In some cases, an update may get stuck during the download or installation process. This is often due to low memory or a cached data conflict. Before trying again, we recommend clearing the update service cache through the developer options or the special engineering menu, which we'll discuss below.
Resetting network settings as an alternative to updating
If a new firmware isn't available or the installation doesn't help, the next step should be a full network reset. This doesn't delete your personal files, photos, or apps, but it completely clears the configuration of all network interfaces: Wi-Fi, Bluetooth, and cellular. This effectively resets the network stack to its factory defaults, which often resolves connection issues.
After completing this procedure, the phone will forget all saved passwords for Wi-Fi and other Bluetooth devices. You will have to re-enter the passwords, but this is necessary for the system to re-initialize the connection with the module and request the latest configurations from the router.
- 📱 Go to
Settings → Connection and Sharing. - 🔄 Find the "Reset Wi-Fi, mobile networks, and Bluetooth" option.
- ⚙️ Click "Reset settings" and confirm the action with the screen unlock code.
- 📡 After rebooting, reconnect to your network.
Users often ignore this step, trying to find a "magic bullet" in the form of third-party software. However, in 80% of cases of software conflicts, a factory reset restores stable operation. Wi-Fi moduleThis is especially true after upgrading from one Android version to another (for example, from Android 11 to 12 or 13), when old configuration files may not work correctly with the new kernel.
Engineering menu and hidden Wi-Fi settings
For more advanced users who want to delve deeper into the radio module settings, there is an engineering menu. In phones Xiaomi And Redmi Access to this feature is often blocked, but it can be activated through a special app or code. Here you can see the actual signal strength, select your preferred network type, and even reset the radio module settings at a deeper level than the standard menu.
To enter the engineering menu, a code is often used ##6484## (CIT) or ##4636##However, on newer versions of MIUI, these codes may be blocked. In this case, you'll need to install a special APK file called "CIT" (the official one, extracted from the firmware) or use ADB commands to activate the menu.
In the CIT menu, select "Wireless" or "Wi-Fi." Here you can run a module test. If the test returns an error or the phone can't even find the router's own networks when in close proximity, this may indicate a hardware issue. The "Wi-Fi Country Code" feature is also available, allowing you to force a region (e.g., US or RU), which can sometimes help unlock additional channels or power.
⚠️ Warning: Changing settings in the engineering menu without understanding their purpose may result in unstable phone operation or voiding the warranty. Do not change values you are not 100% sure of.
Another useful option available through the developer menu (which is enabled by tapping the build number seven times in About the phone) is Wi-Fi logging. By enabling the "Log Wi-Fi" option, you can later analyze why your phone disconnects from the network. This can be difficult for the average user, but enabling logging sometimes "shakes up" the system services.
How to enable the advanced developer menu?
Tap "MIUI Version" seven times. Then, in "Additional Settings," select "Developer Options." Find the "Network" section and enable "Aggressive Wi-Fi switching"—this will make the phone more actively search for the best access point.
5 GHz Frequency and Communication Channel Issues
One of the common reasons users look for a way to "upgrade Wi-Fi" is the phone's inability to detect 5 GHz networks. Older models Redmi (e.g., Redmi 8A, 9A) don't physically support this band, and no update will help—it's a hardware limitation. However, if your phone (e.g., Redmi Note 10 or newer) suddenly stops seeing 5 GHz, the issue may be with your router settings.
Modern Wi-Fi standards require proper channel selection. If the router is configured for DFS (dynamic frequency switching) channels, which are used by radar, the phone may not see the network or may constantly lose it. The issue may also lie in the WPA3 security standard, which older versions of Android on Redmi may not handle correctly.
The table below shows the compatibility of Wi-Fi standards with Android versions commonly found on Redmi devices:
| Wi-Fi standard | Required Android version | Redmi support (example) | Recommendation |
|---|---|---|---|
| Wi-Fi 4 (802.11n) | Android 4.0+ | All models | Basic, slow |
| Wi-Fi 5 (802.11ac) | Android 5.0+ | Redmi Note 4 and newer | Optimal for 5 GHz |
| Wi-Fi 6 (802.11ax) | Android 10+ | Redmi Note 10 Pro, K40, and newer | Requires a Wi-Fi 6 router |
| Wi-Fi 6E | Android 12+ | Flagships 2022+ | Rare in Russia/CIS |
If your router is using "Smart Connect" mode (combining 2.4 and 5 GHz into a single network with a single name), your phone may become stuck on a slower frequency. Try separating the network names (SSIDs) in your router settings by adding "_5G" to the 5 GHz network name and force-connecting to it. This often resolves the slowdown issue, which users mistakenly believe is a driver update.
Wi-Fi module hardware failure
When all software solutions have been exhausted, and the Redmi Wi-Fi still won't turn on (the button is grayed out or turns off immediately), there's a hardware problem. In Xiaomi smartphones, the Wi-Fi module is often soldered directly onto the motherboard or is part of a combined chip (Wi-Fi + Bluetooth). Overheating, a drop, or a manufacturing defect can cause it to fail.
Symptoms of a "dying" module:
- 📉 There is a signal, but the Internet does not work on any device (router problem) or only on the phone.
- 🔌 The Wi-Fi slider in the settings is gray and won't activate.
- 📵 The phone sees networks, but when entering the password, it says "Authentication error" or "Failed to connect."
- 📉 The speed drops to a few kilobits per second near the router.
In such cases, an "update" is impossible. Diagnostics at a service center are required. Sometimes reballing the chip helps, but more often, replacing the module or the entire board is necessary. Custom methods like "heating it in an oven" or "tapping" can completely destroy the device.
⚠️ Note: MIUI and HyperOS interfaces are constantly changing. Menu items may have different names or be moved. If you don't find the option described, use the settings search (magnifying glass at the top of the screen).
Final recommendations and prevention
To summarize, it's important to remember: Redmi smartphones don't have a dedicated Wi-Fi driver. All improvements come only with official system updates. Regularly check for the latest MIUI version, and don't ignore security notifications. Use only original chargers, as poor-quality power supplies create interference that the Wi-Fi module interprets as noise, causing connection drops.
For maximum performance, keep your router in an open area, away from microwaves and mirrors. If your phone is old and no longer receives updates from Xiaomi (for example, the Redmi Note 8 stopped receiving Android updates), its network protocols may be outdated. In this case, the only solution is a gentle factory reset or, as a last resort, replacing the device with a more modern one that supports current encryption and speed standards.
Why did Wi-Fi disappear after updating MIUI?
Sometimes new firmware versions contain bugs. If Wi-Fi disappears immediately after an update, try resetting your network settings. If that doesn't work, the update may have damaged system files, and you'll need to reflash your phone using a computer (Mi Flash Tool).
Is it possible to install Wi-Fi driver from computer on Redmi?
No. Computer drivers (.inf, .sys files) are incompatible with the Android architecture (Linux kernel). Installing such files is impossible and useless.
Does the case affect the Wi-Fi signal?
Yes, if the case contains metal elements or magnets. Metal will block the signal. Remove the case and check if the reception improves. Thick silicone cases can also weaken the signal at the extreme range.
How to check signal strength in dBm?
Go to Settings → About phone → All settings and quickly click "Core" or "Internal Version" until the testing menu opens. There you'll find the "Wi-Fi" option, which shows the actual signal strength in dBm (the closer to 0, the better; for example, -40 is better than -80).