Modern Xiaomi smartphones, running on the shell of MIUI or the new HyperOS, have powerful communication modules that are set by default to automatically receive parameters from the operator. However, in real life, users often face situations where the automatic configuration fails and the device stops transferring data despite the presence of a SIM card and network coverage. This can occur after a change in the tariff plan, flashing the device or when using sim cards of foreign operators, where standard profiles do not apply.
Lack of access to the global network turns an expensive gadget into a regular “caller”, depriving the owner of the ability to use instant messengers, navigation and online services. It is important to understand that the problem is not always the technical malfunction of the antenna or modem. Often the cause lies in the incorrect settings of the APN access point or conflict of software protocols, which are easy to fix manually without contacting the service center.
We're going to look at not only the basic steps to enable data transmission, but also delve into the hidden menus of engineering settings that allow you to optimize the signal in areas of uncertain reception. DNS-servers and protocols IPv4/IPv6 This can significantly speed up the response of the system and reduce ping in online games.
Basic setup of mobile Internet 4G and LTE
The first step to ensure a stable connection is to properly activate the SIM card in the device slot. In Xiaomi smartphones with two SIM cards, there is often confusion when the mobile Internet is assigned by default to the SIM card where money is out or 4G coverage is missing. To avoid this, you need to go to the settings and explicitly specify the priority SIM card for data transfer. This action will redirect all traffic through the selected communication module.
After selecting a SIM card, make sure that the Mobile Internet switch is activated. The system can suggest choosing the type of network you prefer. For maximum speeds, choose 4G/LTE Preferred. If the carrier coverage in your region leaves much to be desired, the forced choice of 3G can provide a more stable, albeit slower connection, preventing constant reconnection.
⚠️ Note: When changing the type of network with 4G on 2G/3G Page loading speeds will drop dramatically, and some modern applications may stop working due to lack of support for older encryption protocols.
It is also important to check whether the Traffic Savings or Data Limit mode is activated, which can block background services. In the MIUI interface, these settings are located in the Data Use section. Make sure that for system processes and important applications, network access is not limited. Resetting network settings in this menu often helps if previous actions have not worked.
Manual configuration of the APN access point
The most common reason for not having internet when you have a signal is an incorrect APN (Access Point Name) access point. Operators automatically send SMS settings, but on Xiaomi smartphones with Global ROM, when you install a Chinese SIM card (or vice versa), the automatic setting may not work, in which case you need to manually prescribe the settings, creating a new profile.
To create a new access point, go to the SIM card settings menu, select an active SIM card, and find "APN" (APN). Click "New AP" or "Create APN." This will require you to enter the data your carrier provides. This is usually the name of the point (such as the Internet) and, in rare cases, the login and password. It is critical to accurately enter the APN field value, since one extra letter will make the profile unworkable.
Below is a table with popular settings for operators in Russia and CIS, which can be used as a sample:
| Operator. | Name (Name) | Access Point (APN) | Type APN |
|---|---|---|---|
| MTS | mts internet | internet.mts.ru | default,supl |
| Beeline | Beeline Internet | internet.beeline.ru | default,supl |
| Megafon | Megafon Internet | internet | default,supl |
| Tele2 | Tele2 Internet | internet.tele2.ru | default,supl |
Once you have entered all the options, be sure to save the profile by clicking the corresponding button in the menu (often three dots in the corner of the screen), and activate it by ticking or selecting from the list. If the Internet does not appear immediately, turn on and off Air mode to restart the radio module, this will force the phone to re-register with the new parameters.
☑️ Checking settings APN
Setup and Optimization of Wi-Fi Connection
Wireless Wi-Fi networks in Xiaomi devices are stable, but sometimes require manual adjustments to work in specific conditions, for example, when using hidden networks or corporate gateways. If the network is hidden, you must enter manually. SSID (network name) and select the type of encryption that normally meets the standard WPA2/WPA3-Personal.
Advanced Wi-Fi settings, which open when you click the arrow next to the network name in the saved list, you can find the option “IP settings.” By default, it is “DHCP”, which means automatic receipt of the address. In some cases, for example, to throw ports or connect to network printers, you need a static IP. Changing this parameter to “Static” will allow you to prescribe the address manually, avoiding conflicts on the local network.
⚠️ Note: When installing a static IP-Make sure that the selected address is not occupied by another device on the network, otherwise there will be a conflict of addresses and the Internet will disappear on both gadgets.
Also worth noting is the Wi-Fi Assistant feature, which allows the phone to automatically switch to mobile internet if the Wi-Fi signal becomes too weak. While convenient, it can consume mobile traffic without you knowing. To save budget, it is better to turn off the option to switch to mobile data in advanced Wi-Fi settings.
What if Wi-Fi is connected but the internet is not working?
Resetting network settings and resolving conflicts
When software failures accumulate, standard switching may not help. In such situations, a complete reset of network settings is an effective solution, which does not affect your personal data, photos or applications, but deletes all stored Wi-Fi passwords, Bluetooth pairs and resets the mobile network settings to factory values.
You can reset via the Advanced Settings or About Phone menu by finding Reset Wi-Fi, Mobile Internet and Bluetooth. Once confirmed, the phone will reboot. You will need to re-enter wireless passwords, but this often solves the problems with hanging connections when the status bar shows the network is present, but the data packets are not transmitted.
Another diagnostic tool is the engineering menu, and by entering the dialer code ##4636##, you will be taken to the testing menu. Here, in the Phone Information section, you can see the actual signal strength (dBm) and switch your preferred network type. Use of this menu requires caution, since incorrect changes can temporarily disrupt the communication module until the next reboot.
💡
Before you complete a network reset, take a photo of important Wi-Fi passwords or make sure you remember them so you don’t lose access to your home network.
DNS problems and response speed
Page loading speed depends not only on the width of the channel, but also on the speed of work. DNS-servers that translate domain names into IP-Providers often provide their own DNS, which can run slowly or block access to certain resources, including Android (starting with version 9) and the shell MIUI There is an opportunity to register a private DNS manually.
To change the DNS, go to the Wi-Fi settings, click on the selected network, and select IP Settings -> Static. In DNS 1 and DNS 2, enter the addresses of fast servers, such as from Google (8.8.8.8 and 8.8.4.4) or Cloudflare (1.1.1.1). This often speeds up site opening and eliminates the "failed to find the server" errors.
There is also a “private” function. DNS» In general connection settings, if you turn it on and you write hostname (like dns.google), you can encrypt it. DNS-requests that enhance privacy and sometimes help bypass ISP locks, but it is worth remembering that using third-party DNS This may result in the inability to access local operator resources, such as tariff portals.
💡
Shift. DNS-Public servers (Google, Cloudflare) – the easiest way to speed up the response of the system and bypass the locks of the provider at the domain name level.
Additional parameters and frequent errors
Xiaomi users sometimes experience the situation where the Internet works in the browser but does not work in specific applications. This is due to the MIUI energy saving system, which aggressively kills background processes. Go to the application settings, find the "Control Activity" option and select "No restrictions" mode, which will allow the application to maintain a constant connection.
Another common mistake is the flight mode enabled in conjunction with an attempt to distribute the Internet. The Wi-Fi hotspot (modem mode) will not work if Air Mode is activated. Also check if Traffic Savings is included in global settings, as it can prevent data transfer in the background for all applications at once.
If you use VPN-services, make sure they don't block all traffic when the connection is broken (Kill Switch function). VPN-The client continues to hang in the background and redirect traffic to a non-existent server, creating the illusion of having a network, but without access to the content. VPN-Applications often solve the problem.