Owners of Xiaomi smartphones often face a situation when after updating the system or changing the mobile operator, the data transfer speed is markedly reduced. Instead of the values declared by the provider, the user receives long page loads and video buffering even at full signal level. The problem is not always in the tariff plan, often it is a matter of software restrictions or incorrect modem settings inside the MIUI or HyperOS shell.
There are many ways to optimize network connectivity without using third-party software, which can pose a security threat. DNS-Servers and Wi-Fi frequency management can dramatically change the experience of using your device. In this article, we will discuss in detail the technical aspects of setting up that will help you to get the most out of your equipment.
Before you get to the tricky side of the game, you need to rule out the trivial causes of the unstable work, check if the traffic saving mode is turned on, which artificially limits the background activity of applications, and make sure that the phone has the latest security update, since Xiaomi engineers regularly release patches that fix errors of network modules.
Diagnostics of current connection and elimination of interference
The first step to fast internet is to understand what is currently limiting speed. Often users confuse the low speed of the channel itself with a poor signal or overloading the processor with background tasks. First, it is worth testing with specialized applications such as Speedtest or Fast to capture current ping, download and return rates.
If you're using a mobile network, look at the status bar indicator, and if you're using a 4G+ or 5G icon, you're using an extended bandwidth, which allows for higher bandwidth, but when you're under coverage, the phone can constantly switch between communication standards, causing connection breaks, and in these cases, you can switch temporarily to 4G only through the engineering menu.
β οΈ Attention: Making changes to the engineering menu can cause the communication module to work in an unstable way. Write down the initial values of the parameters before changing them so that you can return everything as it was.
For Wi-Fi owners, the choice of frequency range is critical. Modern routers operate in two bands: 2.4 GHz and 5 GHz. The former provides more coverage, but is highly susceptible to interference from neighboring networks and household appliances. The second band (5 GHz) gives maximum speed, but has a shorter range and passes through walls worse.
- π‘ Check Wi-Fi channel loads with the Wi-Fi Analyzer app to select the least loaded channel.
- π Reboot your router and smartphone, as the accumulated cache of network services can slow down the exchange of data packets.
- πΆ Make sure your phone does not activate Wi-Fi Assistant mode, which can mistakenly switch you to mobile internet at the slightest drop in signal.
If you have multiple devices connected to your access point that consume traffic (like downloading games or watching 4K video), the speed on Xiaomi may drop due to a shortage, in which case no phone settings will help until the channel is freed.
Optimization of mobile network settings and APN access points
The most effective way to speed up mobile internet is to manually configure APNs. Operators often provide standard settings that are not always optimal for specific signal reception conditions in your area. Creating your own access point allows you to eliminate unnecessary service gateways and choose the fastest connection protocol.
To go to settings, open the Settings menu β SIM-Maps and mobile networks. Choose active networks. SIM-Map and go to the "Access Points (APN)". Here you'll see a list of available profiles. Click the "New Access Point" button or the plus icon to create your profile. The name can be anything, like "Fast Internet" and in the field. APN You must enter data corresponding to your operator.
The key is to choose the APN type. default,supl is often the default, but to speed up, you can try adding dun or changing the protocol to IPv4/IPv6. In some cases, changing the protocol from IPv6 to IPv4 gives you an increase in speed, since the provider's servers are better optimized for the old version of the standard.
Name: FastTrack
APN: Internet (or operator-specific)
APN Protocol: IPv4/IPv6
Type APN: default,supl,dunOnce you save the settings, be sure to restart the device and turn on flight mode for 10 seconds so that the communication module re-registers on the network with new parameters. If the speed has not changed, try creating another access point with different parameters, since there is no universal solution for all cell towers.
| Parameter | Recommended value | Description of the impact |
|---|---|---|
| Protocol | IPv4/IPv6 | Compatibility with all types of servers |
| Type APN | default,supl | Basic profile for data transfer and GPS |
| MCC/MNC | Change | The network identifiers must match the SIM |
| Port port | Not stated. | Leavening empty speeds up connection |
Shift. DNS-servers to speed up response
Often the problem of slow Internet is not the low download speed, but the long response of domain name servers (DNS). When you enter the address of the site, the phone asks for DNS-server IP-The standard servers of the provider can be slow or overloaded, creating a feeling of βlayingβ the Internet.
On Xiaomi smartphones with Android 9 and above, you can change the DNS at the system level without installing additional applications. To do this, go to Settings β Connection and Sharing β Private DNS. Select the option βHost Name of the DNS providerβ and enter the address of one of the fastest public servers.
The most productive and stable servers are those from Google and Cloudflare, which have a distributed infrastructure that guarantees minimal response time from almost anywhere in the world, and can also help bypass some of the ISPβs restrictions on accessing certain resources.
- π Google DNS: Enter dns.google for reliable and fast name resolution.
- π Cloudflare DNS: Type in 1.1.1.1 or dns.cloudflare.com for maximum speed.
- π‘οΈ AdGuard DNS: Enter dns.adguard.com to also block ads in apps.
After settings, it is recommended to clear the DNS cache. This can be done by turning on and off flight mode. If you notice that some local resources have stopped opening, return the DNS setting to Auto mode.
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If after changing the DNS, the Internet stopped working in some applications, try selecting βDisconnectedβ in the settings of the private DNS, restart the phone, and then re-register the server address.
Resetting network settings as a radical method
If your software settings are lost due to system errors or conflicts after a firmware update, the most effective method is to completely reset your network settings, which does not delete your personal files, contacts or applications, but returns all your Wi-Fi, Bluetooth and mobile settings to factory values.
Resets can be made via Settings β Connection & Sharing β Reset Wi-Fi, mobile networks and Bluetooth. The system will warn you that all saved passwords from Wi-Fi networks will be deleted. This is a necessary step, as old configuration files may contain errors that slow down the module.
β οΈ Note: After resetting, you will have to re-enter passwords from all Wi-Fi networks and re-connect Bluetooth devices (earphones, watches, speakers).
This method is particularly effective when the phone "sees" the network but cannot receive it. IP-The address or the constant text is "Authentication error." Often the problem is static. IP-Addresses that were previously assigned and now conflict with the routerβs current network infrastructure.
In some cases, especially on custom firmware or after obtaining root rights, it may be necessary to reset through the_recovery_ menu ADB-However, for most users, a standard settings menu is sufficient. MIUI. After restarting the phone again negotiates parameters with a cell tower, which often eliminates congestion in the data channel.
Hidden features and engineering codes Xiaomi
The MIUI and HyperOS shells contain additional network testing and configuration capabilities that are accessed through special codes in the call, and one of the most useful tools is the CIT test menu. To call it, dial ##6484##.
In the menu you can select the item associated with SIM-A map or network (usually called a map or network"SIM Card Test" or "Cellular" - This displays detailed signal strength information (RSSI), signal-quality (RSRQ) and interference level (SINR). This data will help you understand whether the problem is hardware (poor reception) or software.
What do the signal parameters mean?
Another important code is ##4636##. It opens the Android testing menu. Select Phone Information. Here you can find the "Preferred Network Type" switch. If you have "5G/4G/3G/2G (auto)" on your phone, it can spend a lot of time searching for 5G, even if it's not there, resetting the connection. A forced "LTE only" or "4G only" setup stabilizes speeds in areas of uncertain reception.
Using these tools requires caution, and changing your preferred network type to "LTE Only" may result in you not being able to receive incoming calls if your carrier does not support VoLTE, in which case the Internet will work and calls will not.
β οΈ Warning: Don't change the settings in the engineering menu unless you understand their purpose. Wrong network type choices can make the phone unable to log in to the operator's network.
The Impact of Background Applications and System Limitations
Often, the slow Internet is caused by applications that actively consume traffic in the background. Social networks, messengers and cloud storage can sync photos, update feeds or download files while the screen is off. Xiaomi has powerful tools to control this process.
Go to Settings β Applications β All apps. Select a consumer app and click Traffic Control. You can either prevent data from being transmitted in the background or restrict mobile network use by only allowing Wi-Fi access, which will free up the channel for tasks that are currently being performed on the screen.
It is also worth checking the charge saving settings. Energy saving mode often limits background activity and can reduce the frequency of network surveys, leading to delays in receiving notifications and slow loading of content. For maximum speed, it is recommended to use Performance or No Limits mode.
βοΈ Optimization of background activity
Remember that some of the Internet accelerators available in the Play Market can actually slow down by consuming processor resources and displaying ads. Android and MIUI are built-in network management far more effective than third-party solutions.
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A comprehensive approach, including network reset, DNS change and background application control, yields better results than using a single method.