How to improve Wi-Fi on Xiaomi phone: from settings to engineering menu

Slow internet on a modern smartphone is not just an annoyance, but a real obstacle to work and entertainment. Owners of Xiaomi, Redmi and Poco devices often face a situation when the router is working properly, but the phone persistently keeps the connection speed low or periodically loses the network. This can be due to software limitations of the MIUI or HyperOS shell, incorrect energy saving settings or simply overflow of air in an apartment building.

Before you take a device to a service center or blame the provider, you need to do a comprehensive diagnostic. In most cases, you can solve the problem yourself by changing several parameters in the system. The algorithm of actions ranges from simply restarting communication modules to more profound manipulation of system files. It is important to understand that the stability of the connection depends not only on the power of the transmitter, but also on how the operating system manages this resource.

In this article, we will discuss all the effective ways to improve signal quality, you will learn how to properly configure frequency ranges, why standard ranges are used. DNS-Servers often slow down and what hidden features are available in the engineering menu. Competent setting can work wonders even on devices of previous years of release, returning them to a second life in the modern high-speed networks.

Diagnosis and basic connection checks

The first step is always to have a basic diagnostics, which many users ignore, immediately starting to dig into complex settings, often the problem is a simple failure of the software module or a conflict. IP-You need to make sure that the router is giving a signal at the frequency supported by your smartphone and that the device is not in the radio zone".

Check your current speed with specialized applications like Speedtest by Ookla or Fast.com. Compare the performance with what you get on other devices connected to the same access point. If the difference is critical, then the problem is the configuration of the phone. Also worth paying attention to the indicator in the status bar: the presence of a 4G/5G icon next to the Wi-Fi icon may indicate that the phone uses mobile Internet for speeding up, which is not always desirable.

⚠️ Note: If your phone shows a full signal scale but the internet isn’t working at all (the Connected, No Internet access error), the problem is almost certainly on the router or ISP side, not the smartphone.

To eliminate glitches in the first place, try resetting your network settings completely. This action will not delete your personal files, photos or contacts, but will return Bluetooth, mobile internet and Wi-Fi settings to factory values. The path to this feature is usually in the Settings menu → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. After the reboot, the system will re-run handshakes with the router, which often solves the problem.

Optimization of Wi-Fi settings in the MIUI and HyperOS interface

Xiaomi shells offer a wide range of tools for managing wireless connections that may not be optimally configured by default. First of all, look at the advanced Wi-Fi settings. Find Wi-Fi Settings → Additional (or Advanced Settings).

The 5GHz Wi-Fi feature (or Prefer 5GHz networks) should be activated if your router supports this standard. The 5GHz range is less crowded by neighboring networks and provides significantly higher data rates, although it has a smaller range. If you are in close proximity to the router, switching to this frequency will give a noticeable increase in performance.

• 📶 Wi-Fi Assistant: Activate Network Acceleration, which allows the phone to automatically switch to mobile internet if the Wi-Fi signal becomes too weak to work comfortably.
• 🔒 Secure Connection: Turn off the Secure Connection option in your Wi-Fi settings if it blocks some sites or slows down page loading due to certificate verification.
• 🔄 Auto-switching: Make sure you have enabled the option of automatically connecting to known networks, but be wary of the “Wi-Fi Assist” feature, which can consume traffic.

It is also worth checking your DNS settings. By default, the phone uses your provider's servers, which can run slowly. By manually prescribing fast public DNS, you can speed up the network response. Go to your network properties, select IP Settings and change from DHCP to Static. In the DNS 1 and DNS 2 fields, enter addresses, for example, from Google (8.8.8.8) or Cloudflare (1.1.1.1).

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Use Cloudflare’s DNS (1.1.1.1) for maximum response speed or Google’s DNS (8.8.8.8) for stability, especially if the provider provides slow-moving, proprietary name servers.

Working with frequency bands and channels

Understanding the difference between 2.4 GHz and 5 GHz is critical to a stable connection. The 2.4 GHz band has greater penetration through walls, but it's extremely crowded. In apartment buildings, dozens of routers, microwave ovens and Bluetooth devices can operate here, creating a powerful level of noise.

The 5GHz range offers more free channels and less interference. However, the signal at this frequency passes through the capital walls worse. If your Xiaomi phone is in the same room with the router, the 5GHz choice is the only option for gaming and viewing. 4K-If you're away, the phone can cling to a 2.4 GHz long-range, where the speed is slow due to interference.

Modern routers often include Smart Connect, which combines both frequencies under the same network name. The router algorithm decides where to connect the client. Unfortunately, in conjunction with some Xiaomi models, this works incorrectly: the phone can “hang” on a weak signal. 2.4 GHz, ignoring free-flowing 5 GHz. In this case, it is recommended that the router’s settings divide the networks by giving them different names, for example, Home_WiFi and Home_WiFi_5G, and force the phone to be connected to the right.

Analyzer applications such as Wi-Fi Analyzer can be used to select the least loaded channel. See which channels (1-13 for 2.4 GHz) are free, and lock that channel into the router settings. Automatic channel selection by the router is often inefficient and leads to constant reconnections.

Energy saving settings and background activity

Battery optimization systems in MIUI and HyperOS are known for being aggressive, and to extend battery life, the operating system can limit background network activity or shut down Wi-Fi completely when the screen goes out, causing notifications to come with a delay and the phone's screen to take time to reconnect.

You need to configure power saving modes for mission-critical applications and for the Wi-Fi module itself. Go to Settings → Battery → Application Energy Saving. Find messengers, mail and other important programs, set up Unlimited mode, which will prevent the system from "killing" the application process and its network activity.

Also check the settings of the Wi-Fi module itself. Some firmware versions have Settings → Battery → (three dots in the corner) → Settings → Wi-Fi. Make sure features that turn off Wi-Fi in sleep mode are turned off. Also, in About Phone, click on the build number several times to activate the developer menu and look there for options related to the aggressiveness of network scanning.

• 🔋 No Limits Mode: Required for Navigators and Messengers to be able to transmit data in the background without system restrictions.
• 🌙 Sleep mode: Check to see if the ultra-energy-saving mode that often blocks the background internet is turned on.
• 📡 Network search: in geolocation settings, disable "Search for Wi-Fi networks" if it is not used, so that the module does not waste resources.

⚠️ Warning: Disabling battery optimization for all applications can cause the device to be discharged at an accelerated rate. Apply No Limits mode only to programs that need to be running continuously.

Resetting network settings and engineering menu

If the software settings didn't work, you can use more radical but effective methods. We've already mentioned resetting the network, but there's another nuance: deleting old profiles. The phone could remember the router configuration from when the password or encryption type changed. Go to the network list, select your network and click Forget, then reconnect by entering the password.

For advanced users, you can log in to the engineering menu, where you can fine-tune the radio module settings. Enter the code ##4636##. If the menu opens, select Phone Information. Here you can find the settings of your preferred network type. Make sure you choose LTE/WCDMA/GSM or a similar combined mode, not just 2G/3G.

There is also a hidden command to reset radio interfaces that runs deeper than a normal reboot. → About the phone, click 10 times on the kernel version (in some versions) MIUI) or use ADB-However, the safest and most effective "engineering" method is a complete reset via Recovery if the problem is systemic.

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Network resets are a “silver bullet” that solves 80% of connection problems by clearing the DNS cache, resetting static IPs, and removing conflicting connection profiles.

External factors and hardware limitations

Physical reasons can't be discounted either: a phone case, especially one that's metallic or contains magnetic elements for car holders, can shield the antenna. The antennas in Xiaomi smartphones are often located at the top or bottom of the case. Try removing the case and checking the signal quality.

Wi-Fi modules in budget models of the past can only support single-threaded mode or 802.11n standard, which physically limits speed even if the router distributes gigabits, in such cases, no settings will help to exceed the hardware limit.

If nothing helps, there may be a problem with the smartphone's Wi-Fi module itself, frequent dumps, the need to reboot the phone to get the network back on, which may indicate contact failure or chip failure, in which case only a visit to a service center to sell or replace the module will help.