Xiaomi smartphones are well-deservedly known for their value for money, but even flagship models sometimes face problems with unstable connections. When a device “loses” the network, switches between 3G and 4G or shows a slow loading speed, can seriously complicate everyday use of the gadget. Often the reason lies not in the hardware breakdown of the antenna, but in software failures or incorrect settings that are easy to fix yourself.
Owners of devices with a MIUI shell or a new HyperOS know that the system has many hidden functions that affect the radio module. Proper configuration of access parameters, choosing a priority network type and timely resetting of network settings can do wonders. In this article, we will discuss in detail all available methods, from simple reboots to using engineering menus.
Before proceeding to radical measures, it is worth eliminating banal factors, such as damage. SIM-Mobile Internet is a complex mechanism that depends on many factors, including the location of the operator's base station. Understanding these processes will help you find a solution to a particular problem faster.
Basic diagnostics and reboot of modules
The first step in fixing any communication problems should be to restart the radio interface, many users simply turn off and turn on the phone, but the more effective method is forced re-registration in the operator's network. This allows the device to “welcome” the nearest tower and get a fresh one. IP-address.
You don't have to reboot the entire smartphone. 10-15 At that point, the antenna module is completely disconnected, which is often more efficient than a normal reboot system, and if the signal indicator does not appear after this procedure, the problem may be deeper.
⚠️ Warning: If the flight mode is switched on SIM-The card does not appear at all (a crossed-out sim card is displayed), this may indicate physical damage to the tray or the card itself.
It is also worth checking whether the traffic saving or energy saving function in the background is activated, which can aggressively restrict the operation of network services. In the battery settings, make sure that the system processes responsible for communication do not set a limit “No access to the network.” Energy saving often becomes the hidden culprit of bad reception.
Setting up an APN access point
One of the most common causes of slow internet is an incorrectly configured APN (Access Point Name) access point. Operators periodically change gateway servers, and the old settings prescribed in the phone may no longer be optimal. On Xiaomi devices, this option often gets lost after updating the firmware or changing the region.
To fix this, you need to go to the settings menu. The path usually looks like this: Settings. → SIM-maps and mobile networks → Choose yours. SIM → Access points (APN). Here you'll see a list of available profiles. If the list is empty or contains strange entries, you'd better create a new point manually, taken from your operator's official website.
When creating a new point, it is important to correctly specify the type of protocol. In the APN type field, default,supl is often the default, but for modern 4G/LTE networks, it is recommended to add dun and hipri. This allows you to use the smartphone as a modem without restrictions and improves connection priority. Also in the APN Protocol field, it is better to choose IPv4/IPv6 to ensure compatibility with all servers.
☑️ Checking settings APN
Once you save your settings, be sure to restart your device. If the internet doesn't work right away, try turning flight mode on and off again. A properly configured APN is the foundation of a stable mobile connection.
Selecting a priority network type
Modern Xiaomi smartphones support many communication standards, from ancient 2G to promising 5G. The problem is that in areas of uncertain reception, the phone can constantly “fly” between standards, trying to find the best signal, which leads to connection breaks. Forced priority setting can stabilize work.
Go to the Settings menu → SIM-maps and mobile networks → Preferred type of network, if you're in a city with coverage 4G Excellent but slow, try switching to “Only” 4G» (if such option is available in your firmware version; or «4G This will prevent the phone from leaving the room. 3G at the slightest signal weakening.
But in rural areas or when driving, this strategy could backfire: If 4G goes missing, the phone will simply lose its network, instead of switching to stable 3G. So there's no universal recommendation, we need to test it.
⚠️ Note: Compulsory inclusion only 4G/LTE This may result in the inability to make regular voice calls if your carrier does not support VoLTE technology in your area.
For advanced users, there is a hidden test menu. Dial ##4636## in the Phone app. In the Phone Information menu that opens, find the "Configure preferred network type" option. Here you can select specific combinations, such as LTE Only for speed testing or GSM/WCDMA/LTE auto for automatic mode.