In today's digital world, wireless network privacy is becoming an increasingly important issue for technology owners. XiaomiMany users encounter a situation where their device automatically broadcasts requests in an attempt to find known networks, which can be used by attackers to track their location. This mechanism is known as Wi-Fi Probe Request, and its default operation often raises questions among those concerned about the security of their data.
The problem is that your smartphone or router is constantly "shouting" into space, asking, "Is my favorite network here?" If you've ever noticed your battery draining faster or seen a multitude of unfamiliar networks in the list of available networks, the problem may be related to your scanning settings. Disabling or limiting this feature can significantly increase your anonymity in crowded areas or office buildings.
In this article, we'll take a detailed look at how to manage these settings on different devices in the ecosystem. MiWe'll explore both software methods via the router interface and system settings in the MIUI Android shell, which allow you to control the frequency and visibility of network scans.
What is Wi-Fi Probe Request and why should you disable it?
Probe Request A Wi-Fi signal is a special control frame sent by a device to detect available access points. When you leave the coverage area of your home network, your device begins actively polling the airwaves, listing the SSIDs of networks it has previously connected to. This standard behavior is necessary for quick and automatic reconnection, but it has a downside.
The main danger lies in the possibility of tracking. Special sniffers installed in shopping malls or on city streets can read unique MAC addresses from these requests. Even if you don't connect to a public network, your presence at a certain point can be recorded. On devices Xiaomi With the MIUI shell, this feature often works aggressively, constantly updating the list of networks.
⚠️ Please note: Completely disabling network scanning may prevent your smartphone from automatically connecting to known Wi-Fi networks when you leave home. You'll need to manually enable Wi-Fi or reselect the network.
Furthermore, constantly keeping the Wi-Fi module in searching mode impacts power consumption. If you're in an area where there are no known networks, but the phone continues to search for them, the battery drains unnecessarily. For many users Sending probe requests is a redundant feature, which can be limited without losing basic Internet functionality.
Wi-Fi privacy settings in MIUI and Android
Smartphone owners Xiaomi, Redmi And POCO Users can control the wireless module's behavior through system settings. Starting with Android 10 and later versions of MIUI, a MAC address randomization feature has been implemented, which partially solves the tracking issue but does not completely disable the requests.
To access advanced settings, you need to go to the developer menu. This is a hidden section of the system intended for testing, but it contains important switches for managing network interfaces. Here you can find the setting that enables scanning even in sleep mode.
- 📱 Go to
Settings → About phoneand press several timesMIUI versionto activate developer mode. - 🔍 On the menu
Additional → For developersFind the section related to network or Wi-Fi. - 🛑 Disable the "Always search for networks" option or something similar if it is present in your firmware version.
It's also worth paying attention to the settings for your specific network. When connecting to Wi-Fi, click the gear icon next to the network name and select a privacy type. Setting "Use random MAC address" instead of "Device MAC address" significantly complicates the collection of your location data.
Managing Probe Request via the Xiaomi router's web interface
If your goal is to limit the activity of the access points themselves Xiaomi Mi Router, then the settings must be found in the device's admin panel. Routers also send service frames, and in some corporate or private environments, it may be necessary to minimize their emission or hide the SSID.
To enter the control interface, open your browser and enter the address 192.168.31.1 or miwifi.comAfter logging in (the password is often the same as your Wi-Fi password or is listed on a sticker underneath), go to the wireless network settings section. Here you'll find options related to network visibility.
☑️ Checking router settings
Hiding the SSID (Broadcast SSID) doesn't completely disable the router's probe responses, but it makes the network invisible to regular users. The device will only respond to direct requests from clients that already know the network name. This creates the illusion of being disabled, although technically the module continues to operate.
Using ADB for deep system customization
For advanced users who find MIUI's default settings insufficient, there's a method using USB debugging and the ADB (Android Debug Bridge) command line. This method allows you to interfere with the system services responsible for Wi-Fi scanning.
Before you begin, enable USB debugging in the developer options and connect your smartphone to your computer. You'll need to install the ADB platform tools package on your PC. Once connected, run the following command to test the connection:
adb devicesIf the device is shown in the list, you can try to change the global settings via settingsFor example, the command to change the scanning policy might look like this (relevant for some versions of Android):
adb shell settings put global wifi_scan_always_enable 0⚠️ Warning: Use ADB commands with caution. Incorrectly entered parameters may result in system instability or loss of Wi-Fi access. Proceed at your own risk.
It's worth noting that in newer Android versions, Google has restricted access to these settings via ADB for security reasons. Therefore, this method may not work on recent firmware versions. HyperOS or MIUI 14/15 without rooting.
Risks of using root rights
Obtaining root privileges grants full system access, but voids the warranty and may make the device vulnerable to viruses. Use tools like Magisk only if you understand the consequences.
Comparison of shutdown methods and their effectiveness
Different methods for restricting Probe Requests vary in effectiveness and implementation complexity. The method you choose depends on your technical expertise and the specific device model. Xiaomi.
The table below provides a comparison of the main approaches to solving the problem:
| Method | Complexity | Efficiency | Impact on functionality |
|---|---|---|---|
| Random MAC address | Low | Average | Minimum |
| Disabling scanning in the menu | Average | High | No auto-connection |
| ADB commands | High | Maximum | There may be some disruptions |
| Hiding the SSID on a router | Low | Low (for router only) | Ease of connection |
The most balanced option for the average user is to use the built-in MAC address randomization features in combination with manual clearing of the list of saved networks. This maintains ease of use while minimizing data leakage.
Common problems and solutions
When attempting to restrict Wi-Fi module operation, users often encounter unexpected system behavior. For example, after applying settings via ADB, the phone may stop detecting any networks, or the connection speed may drop.
If Wi-Fi is unstable after making changes, the first thing you should do is reset your network settings. This will return all settings to factory defaults. The reset path is usually found in the menu. Settings → Connection and sharing → Reset Wi-Fi, mobile networks, and Bluetooth.
- 🔄 Problem: The phone does not connect automatically. Solution: Turn on geolocation, as Android's Wi-Fi scanning often relies on location services.
- 📉 Problem: Low speed after changes. Solution: Check if your router has switched to compatibility or narrowband mode.
- 🔋 Problem: The battery still drains quickly. Solution: Disable the "Search for devices" feature in Bluetooth and Wi-Fi settings.
It's also worth considering that some apps (such as maps or taxi services) may require constant network scanning for accurate positioning. Disabling this feature completely may reduce indoor navigation accuracy.
FAQ: Frequently Asked Questions
Is it safe to completely disable Wi-Fi scanning on Xiaomi?
Yes, this is safe for your hardware, but it can be inconvenient. Your phone will simply stop finding networks, and you'll have to manually turn on Wi-Fi and select a network each time. This is actually beneficial for data security.
However, some system features, such as Location Accuracy, may not work properly without active scanning.
Do ADB settings reset after rebooting the phone?
Typically commands that change global settings (settings put global), persist after a reboot. However, a system update or factory reset will return all settings to their original state.
In rare cases, on some MIUI firmware versions, the system may automatically restore default values at each startup.
Does disabling Probe Request affect internet speed?
No, this doesn't affect data transfer speed after connecting. Probe Request is only used during the search and connection phase. Furthermore, disabling persistent searches can even slightly improve connection stability, as the module won't waste resources on background scanning.
Is it possible to disable this feature only for certain networks?
The standard Android and MIUI interfaces don't offer this option. These settings apply globally to the entire device. You can only "forget" a specific network to prevent the phone from searching for it automatically, but this won't disable the Probe Request mechanism for other saved hotspots.