Owners of Xiaomi, Redmi and Poco smartphones periodically face a situation where the Tele2 operator’s SIM card stops transmitting data despite the presence of a network signal. The screen can show 3G or even 4G icons, but the pages in the browser do not load, and applications report no connection, a problem that often occurs after an automatic update to the MIUI or HyperOS system, or after a change in the tariff plan.
Most of the time, the failure is software-based, due to incorrect APN settings or conflicting communication standards. The manufacturer's shell sometimes aggressively optimizes background processes, leading to erroneous network status determination. It's important to understand that physical antenna failure is rare, and in 90% of cases, you can fix the situation yourself in a few minutes.
This article provides a comprehensive guide to diagnosing and troubleshooting Tele2 mobile Internet on Xiaomi devices, and will look at both standard setup methods and hidden engineering menus that force the modem to switch to the desired modem. Follow the instructions consistently to restore stable network access.
Primary Diagnostics and Physical Connection Check
Before you delve into the complex menu settings, you need to rule out the banal reasons for the lack of Internet. Often the problem lies in the basic things: the operator's services are disabled or the SIM card's poor contact with the tray contacts. Tele2 requires an active balance or a connected tariff with a traffic pack, so the first step should always be to check your personal account.
The MIUI shell has an advanced dual-SIM management system, and users often get confused as to which one is responsible for data transfer. If you've recently switched SIM cards or inserted a new one, the system may have lost its way to using the Internet from another card. Check if the Tele2 SIM card is activated for data transfer in global settings.
⚠️ Warning: If the signal indicator is completely missing or only burning for calls (2G/E), Try to remove the tray and wipe the SIM contacts with soft dry material. Contact oxidation is a common cause of unstable communication module operation.
Also make sure that the device does not activate In-Air mode or traffic limiter for background applications.Sometimes antivirus or built-in security locks network access to save battery life.
Correct setting of the APN access point for Tele2
The most common reason why mobile internet doesn’t work on Xiaomi is because of the downed APN hotspot settings, which is the gateway address through which the phone connects to the operator’s Internet gateway, and after firmware updates, these settings can be replaced with default or blank settings, making data transfer impossible.
To fix this, you need to manually create or edit an existing profile. Go to settings, select Mobile Network, then Access Points (APN), and create a new point with specific parameters that guarantee the correct connection to Tele2 servers. Don't be afraid to delete old, broken profiles.
| Parameter | Value for Tele2 | Note |
|---|---|---|
| Name (Name) | Tele2 Internet | arbitrary name |
| APN | internet.tele2.ru | Critical parameter |
| proxy | (empty) | Don't fill in |
| Port port | (empty) | Don't fill in |
| Type APN | default,supl | Or default, supl, dun |
Once you have entered, be sure to click the "More" button (three dots in the corner) and select "Save." Then activate this access point by ticking next to it. If the Internet doesn't work right away, restart the device or turn on and off flight mode to restart the modem.
☑️ Checking settings APN
Configure preferred network type and LTE standards
Modern Tele2 networks actively use LTE (4G), but in some regions the coverage can be unstable, and the phone tries to “cling” to 3G, where the Internet is slower or does not work at all due to the operator’s settings. Xiaomi smartphones by default can be an automatic choice, which is not always correct.
It is recommended to force prioritize 4G. Go to the Mobile Network menu -> Network type of preference and select LTE preferred. This will cause the communication module to look for high-speed towers. If 4G catches poorly in your area, the phone will switch to 3G itself, but if there is a signal it will keep a stable connection.
There is also a hidden engineering menu available through code ##4636##. By entering it in the dialer, you will be taken to the Phone Information section. There you can find the drop-down list "Configure preferred network type." Select LTE only to check for 4G signal, but remember that incoming calls may not work in this mode (unless VoLTE is enabled).
What happens if the 4636 menu doesn’t open?
Network reset and software conflicts
If manually configuring APN and choosing the type of network didn't help, there's probably a lot of software debris or a network profile conflict, and in such cases, the solution is to completely reset your network settings, and this action will bring all modem, Wi-Fi, and Bluetooth settings back to factory values without affecting your personal files, photos, or contacts.
To perform the reset, go to Settings -> Connection and Sharing -> Wi-Fi, Mobile and Bluetooth Reset. Confirm the action and wait for the communication modules to reboot. After that, the phone will behave as new in terms of connections, and you will need to re-enter passwords from Wi-Fi networks.
⚠️ Warning: After resetting network settings, be sure to reset the access point APN for Tele2, Please use the instructions in the second section of this article.
Also worth checking is whether the built-in antivirus or third-party app is blocking internet access to save traffic. In the Security app (green lightning icon), go to the Data Transfer section and make sure there is no restriction for system processes and the browser. Sometimes cleaning the Settings app cache through the application management menu helps.
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Before resetting your network settings, take screenshots of important saved Wi-Fi passwords if you don’t remember them by heart, as they will be deleted.
Impact of MIUI Updates and Regional Settings
Xiaomi regularly releases updates to the operating system MIUI and HyperOS. Sometimes new firmware versions contain errors in modem drivers, which is especially noticeable on older models of smartphones. If the Internet Tele2 stopped working immediately after the update, the problem is most likely on the side of the smartphone software.
Regional settings also play a role: If you bought a phone for the Chinese (CN) version and reflashed it to the global (Global) version, or vice versa, there may be frequency conflicts. Tele2 in Russia operates at frequencies that should be supported by the global version. Check if the region is correctly defined in the settings ("Additional" -> "Region").
In rare cases, a rollback to a previous firmware version or waiting for a patch from the manufacturer helps. You can try to clear the Settings app data (not the entire phone reset, but the cache and settings menu data). To do this, go to Apps -> All Apps -> Find Settings -> Memory -> Clear.
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Internet problems after a MIUI update are often solved by resetting network settings or waiting for a corrective patch from the manufacturer for 1-2 weeks.
Specific problems of Redmi and Poco models
The low-end models of the Redmi and Poco series often feature entry-level modems that can be sensitive to signal quality and operator settings. Owners of devices such as the Redmi Note 9, 10, 11 or Poco X3, M3, M4 sometimes face a situation where the phone “sees” the network, but does not register with it to transfer data.
These devices are characterized by a feature: when you turn on the mode “Saving traffic” or “Ultra-savings”, the system can completely disable background data transfer for the SIM card. Tele2, If it's not the primary caller, check if you're not using the hard-saving mode. SIM-Make sure that the cards are for Tele2 There is no limit to “Only” 2G».
If nothing works, you can try a more radical method, reflashing the radio module (baseline). However, this is a complex procedure that requires unlocking the bootloader and having a PC with a QFIL utility or SP Flash Tool. Regular users are advised to limit themselves to resetting to the factory settings of the entire phone, having previously made a backup of the data.