Xiaomi, Redmi and POCO are known for their excellent price-performance ratio, but users often face unstable wireless module operation. When the phone loses network in the next room or speed drops for no apparent reason, it can be caused by software limitations of the MIUI or HyperOS shell, as well as incorrect power saving settings. Android’s deep system, which underlies the firmware, allows you to fine-tune connection parameters, but by default these options are often hidden or optimized not in favor of maximum speed.
In this article, we will take a comprehensive approach to solving signal problems, from basic router configuration checks to editing system files through an engineering menu. Connectivity stability depends not only on transmitter power, but also on how the operating system manages the antenna module. Understanding these processes will allow you to make the most of your existing hardware without buying new gadgets.
Before we go into complex manipulations, we need to rule out trivial causes of failure, such as outdated software or physical interference. IP-So, what we do is we do a simple setup menu, and let's go through all the optimization levels in a sequential way to get the best data rate possible.
Diagnostics and analysis of the current state of the network
The first step should always be to make an objective assessment of the situation. Users often confuse low Internet speeds from the provider with weak WiFi signal. First, check the signal strength (RSSI) at the point where you usually use a smartphone. If the value is below -75 dBm, the device is at the limit of confident reception, and software tweaks will only give marginal improvement.
Use built-in diagnostics or third-party tools to analyze channel load. In modern Xiaomi smartphones, this information is often hidden from the average user, but is available through special applications or engineering menus. It is important to understand whether you are operating in the 2.4 GHz or 5 GHz band, since optimization strategies for them are radically different.
⚠️ Warning: Don’t blindly rely on sticks in a status bar, they only display an approximate signal level and may not reflect the real quality of the connection, which is characterized by noise levels and packet loss.
For accurate diagnosis, it is recommended to temporarily turn off mobile data and check the speed through services like Speedtest, comparing the results with other devices at the same point. If the speed is much higher on a laptop or other phone, the problem is localized precisely in the settings of your Xiaomi, otherwise you should consider replacing the router or contacting the provider.
Basic WiFi setup at the Android system level
The MIUI shell has its own network management algorithms that sometimes work too aggressively to turn off the WiFi module to save power. To prevent this, you need to go to advanced settings. Go to Settings → WiFi → WiFi settings (or “Additional settings”) and find “Use WiFi even in sleep mode.” Set the value “Always”.
And then you have to look at the WiFi Assistant feature, which is designed to automatically switch to mobile Internet if the WiFi signal is weak. While this is a good idea, in practice it often causes micro-breaks of connection and increases ping in games, and you'd better turn it off or set the sensitivity threshold if you have one available on your firmware version.
An important aspect is resetting network settings if problems started after a system update.This action will clear the network configuration cache and delete saved passwords, but often solves problems with sticking the module at certain frequencies. To do this, go to Settings → Connection and Sharing → Reset Wi-Fi, mobile Internet and Bluetooth.
☑️ Checklist of basic settings
It is also worth checking whether a static system is installed. IP-an address that may conflict with the address of another device on the network. In your network connection settings, click on the arrow or gear icon, select Settings IP» And make sure the regime is up. DHCP. This will ensure automatic and correct issuance of the address by the router.
Optimization of DNS and frequency bands
One of the most effective ways to speed up network response is to change the network. DNS-Providers often use their own servers, which may be slow or filtered. DNS Google or Cloudflare can significantly reduce page loading times.
To change your DNS, go to your WiFi network settings, select IP Settings → Static (or Manual). In DNS 1 and DNS 2, enter the fast server addresses. For example, Cloudflare is 1.1.1.1 and 1.0.0.1, and Google is 8.8.8.8.8.8 and 8.8.4.4. After saving the settings, it is recommended to restart the WiFi module.
| DNS Provider | Main address | Alternative address | Features |
|---|---|---|---|
| Cloudflare | 1.1.1.1 | 1.0.0.1 | The fastest, focus on privacy |
| Google Public DNS | 8.8.8.8 | 8.8.4.4 | High stability, global network |
| Quad9 | 9.9.9.9 | 149.112.112.112 | Blocking malicious domains |
| OpenDNS | 208.67.222.222 | 208.67.220.220 | Flexible filtering settings |
The second important parameter is frequency range. The 2.4 GHz range has a longer range, but is highly susceptible to interference from microwaves, Bluetooth devices and neighborhood routers. The 5 GHz range provides high speed and clean air, but it penetrates walls worse. If your router is dual-band, force Xiaomi to connect to a 5 GHz network for maximum performance.
💡
If your router is broadcasting the same network (SSID) frequency-wise 2.4 and 5 GHz, phone can get stuck on a longer-range but slower 2.4 GHz. Separate networks in router settings by giving them different names, such as"Home_24" and"Home_5", to force the choice of a fast network on the phone.
Roaming settings and hidden Android settings
Deep inside the Android system on which Redmi and POCO are based, there are hidden parameters that control the behavior of the WiFi module, which can be accessed through the developer menu or special applications, and one of the key parameters is WiFi Scan Throttle (WiFi Scan Throttle or Roaming Aggressiveness).
If you move between rooms frequently or use a Mesh system, setting up roaming aggressiveness can help the phone switch to the hotspot with the best signal faster. However, if you set the level too high, the phone can start constantly scanning the airwaves, which will lead to battery drain and paradoxical deterioration of communication.
⚠️ Change hidden parameters through the engineering menu or ADB-The commands can cause the system to run in an unstable way.
To access the extended WiFi setting, you can use the command via ADB (Android Debug Bridge) by connecting your phone to your PC. For example, a command to change the WiFi region (which can open additional channels) looks like this:
adb shell settings put global wifi_country_code USReplacing a country code (e.g., US or RU) may allow channels that are blocked in your region by default, which sometimes helps interference.
How to turn on the developer menu on Xiaomi?
The Impact of Energy Saving on WiFi Module
MIUI and HyperOS optimization systems are notorious for their aggressive policy of “killing” background processes and disabling communication modules to extend battery life.This often results in WiFi shutting down when the screen goes down, or messengers stop receiving messages until they unlock.
To fix this, you need to adjust the behavior of a particular application or system as a whole. Go to Settings → Battery and Performance. Select No Limits mode for mission-critical applications. Also, in the Battery Savings menu, make sure that you don't activate Ultra-Energy Saving Mode, which severely restricts background activity.
- 📱 Open "Settings» → «Annexes» → «All applications».
- 🔋 Find the right app (such as Telegram or navigator).
- ⚡ Click on “charge savings” and select “No restrictions».
- 🛡 Check the "Security" section» → «Battery for global settings.
Also, it’s worth disabling Adaptive Connection in WiFi settings if it’s present, which attempts to analyze network quality and can decide on its own if it deems it “useless” for energy savings, which is often mistaken.
💡
Aggressive energy saving is the main reason why Xiaomi is losing WiFi in the background: Forcing restrictions on important applications solves 90% of notification problems.
Hardware factors and external interference
Physical limitations can’t be discounted. Xiaomi’s smartphone cases are made of a variety of materials, and having a metal frame or a tight magnetic-clasp case can shield the antenna. Antenna lines in modern smartphones are located along the perimeter of the body, so tight grip of the palm at a certain point (“death grip”) can also weaken the signal.
External sources of interference play a huge role, especially in apartment buildings. 2.4 GHz microwave ovens, wireless cameras, Bluetooth headphones, and even garlands can create a background noise. If the router is standing next to such devices, the quality of communication will suffer regardless of the phone's settings.
The recommended experiment is to take off the case, go right up to the router and check the speed. Then gradually move away. If the signal drops immediately, it is possible that the antenna module in the phone is damaged or the plume has gone (relevant for devices after falls or self-repair).
Resetting and radical solutions
If the software settings don't work, you'll have to reset to factory settings, which is an extreme measure that will delete all the data, but is guaranteed to clear the system of the accumulated configuration errors. Be sure to back up your Mi Cloud or your computer before doing so.
Global firmware installations are also worth considering if you are using the Chinese version (CN ROM). Global versions often have other WiFi drivers better adapted to European and Russian frequency standards. However, flashing is a risky process that requires unlocking the bootloader.
⚠️ Note: Flashing the device or unlocking the bootloader may result in loss of warranty and the ability to remotely lock the device (Mi Account Lock.
In some cases, a complete reset of the network settings we mentioned earlier, combined with deleting Google user profile and re-authenticating, helps.This eliminates synchronization of old, conflicting settings from the cloud.