How to connect mobile Internet to Xiaomi: the full guide

Modern Xiaomi smartphones, working on the basis of the shell MIUI or a new HyperOS, usually automatically determines the operator's settings when installing a new one. SIM-However, users often face a situation where, after replacing the device or moving to another region, the icon is 4G It appears, but the sites don't open, because it's reset or it's not properly applied to the access point settings. APN.

The lack of access to the WAN can be caused by both firmware software errors and physical factors such as damage to contacts. SIM-In most cases, the problem is solved by manually adjusting the parameters in the mobile traffic menu. APN your operator, as even one extra letter in the "Access Point" field will make the connection impossible.

In this guide, we will take a detailed look at the algorithm for activating the Internet, look at the specifics of the setup for different operators, and offer solutions for complex cases where standard methods do not work, learn how to diagnose the problem and quickly return the device to work without going to the service center.

Diagnostics and initial verification of settings

Before you go to complex manipulation of system files or reset settings, you need to eliminate trivial errors. Often users forget basic things like having a balance or flight mode on. Make sure the network indicator is displayed in the status bar and shows the type of connection GPRS, 3G or 4G/LTE.

The first step should always be to check mobile traffic activity, and on Redmi and Poco devices, data management is put into a separate switch in the notification curtain, and if the slider is gray, the Internet will not work even if the plan is paid.

• 📶 Check for network signal and no “No SIM card” icon».
• 💰 Make sure there is a positive balance and no locking by the operator.
• ✈️ Turn off the “On the Plane” mode and wait. 10-15 seconds for online registration.
• 🔄 Reboot your smartphone to update network settings.

If you have an LTE icon after you reboot, but the pages are not loading, try switching network mode. Sometimes a forced transition to 3G helps push the connection through, then you can go back to automatic mode, and this is especially true for older cell towers.

Manually configuring the APN access point

The most common reason for the lack of Internet access is the misconfiguration of the APN (Access Point Name) access point, which is a gateway between the cellular network and the Internet. Operators often send these settings by text message, but in case of failures or use custom firmware, they have to be entered manually.

To enter the settings menu, go on the Settings path → SIM-Select an active SIM card if there are two and click on Access Point Names (APN). In the list you need to create a new record or edit an existing one.

Note the letter register in the Access Point field. For most operators in Russia and the CIS, there should be no prefixes like http:// or endings. Only a pure domain name, such as the Internet or mts. After filling in all the fields, be sure to save the profile and select it active (check the dot or tick).

In some cases, you need to reset existing access points to factory ones. On the APN menu, click on the three dots in the top right corner and select Reset option.This will remove all custom configurations and return standard profiles that can earn correctly.

Specificity of settings for different operators

Each mobile operator uses unique settings to log in to the data network, and below is a table with the current settings for the main carriers, and if your carrier is not listed, you can find the data on the official website or in support.

It is important to note that for some tariff plans, especially corporate or old archival, the parameters may differ, and fields such as “Username” and “Password” often require the data provided by the operator when concluding the contract. For standard consumer tariffs, these fields are often left blank or duplicate the name. APN.

Type of protocol APN best to set the value IPv4/IPv6, If your carrier supports both standards, this will ensure the best compatibility with modern servers. APN» (APN type) is defined as default,supl for navigation and normal surfing.

Removing software failures and resetting the network

Sometimes the problem lies deeper in the conflict of network services of the Android operating system, the accumulated cache of network settings can cause connection errors even with the correct APN parameters, in which case the effective solution is a complete reset of network settings.

⚠️ Note: Network Settings Reset Will Remove All Saved Wi-Fi Passwords, Coupled Bluetooth Devices, and Settings VPN. Mobile Internet and calls will not be affected, but you will have to re-enter passwords from routers.

To do this, go to Settings → Connection and Sharing → Reset Wi-Fi, Cellular Networks, and Bluetooth. On some versions of MIUI, the path may be different: Advanced Settings → Restore and Reset → Network Settings Reset. Once confirmed, the phone will restart.

Another diagnostic tool is the hidden engineering menu, and by calling the code ##4636## in the Phone app, you will be taken to the testing menu, select Phone Information, and find "Configure preferred network type." Make sure you select a mode that supports LTE, such as NR/LTE/GSM/WCDMA.

If you see the "Disconnected" status for mobile traffic on the engineering menu, try switching it to "On," and you can force the network type to change, which sometimes helps you pick up a tower if the automatic selection fails.

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Use Flight Mode as a quick way to reconnect. Turn it on for 10 seconds and then turn it off. This causes the modem to re-register and request current settings from the base station.

Problems with dual-symbol devices

Xiaomi smartphone owners often use two SIM cards, which can lead to conflicts when choosing a data channel. The system may try to use a card for the Internet that does not charge traffic or runs out of megabytes.

Check the settings in the Settings section → SIM-Maps and mobile networks. Make sure that the mobile Internet selects the SIM card you set up for. APN. It often happens that after a system update, the priority map for data is reset to the first default.

• 📱 Make sure that no traffic limit or data lock is enabled for the second SIM card.
• 🔄 Try to physically change the SIM cards in places in the tray.
• 🚫 Disable the second SIM card temporarily to check the Internet on the main one.
• 📶 Check if the backup data limit for the second card is worth it.

Special attention should be paid to the functions of “Smart modem modem” or “Game acceleration”, which can redirect traffic through Wi-Fi or a second SIM card to reduce ping, which creates the illusion of a broken mobile Internet.

Hardware causes and work with SIM-card

You should not discount the physical condition. SIM-The contacts can oxidize, and the card itself can have microcracks. If the software methods didn't work, remove the tray and examine the chip.

Try to gently wipe the SIM card contacts with a soft rinse or dry lilac-free cloth. The fat and dust that hit the chip often cause unstable connections. Also check if the card sits tightly in the tray - it should not hang around.

⚠️ Warning: Never cut off your SIM card yourself with scissors unless it is the right size. Damage to the chip or the safety circuits will cause the card to permanently fail. SIM format.

If you have the opportunity, set up SIM-If the internet is not working there, the problem is guaranteed on the side of the operator or the card itself. SIM The new (with the number saved) will be the only correct solution.

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If SIM-The card does not work on other phones, and the settings APN That's right, you need to replace your plastic card with your carrier.

Frequently Asked Questions (FAQ)