How to activate SIM-Map on Xiaomi phone: the full guide

Modern Xiaomi smartphones running under the control of the shell MIUI or a new HyperOS, usually automatically recognizes the installed SIM-However, in some cases, users have to manually adjust or activate the operator profile, especially when switching to new tariff plans or using virtual operators. Understanding the registration process helps to avoid long-term communication absence and ensures stable access to the mobile Internet.

The activation process can vary depending on the type of SIM card used: a standard physical card or an embedded eSIM. While physical cards require simple contact with the reader, digital profiles need scanning. QR-No matter the format, the right sequence of actions allows you to quickly start the device in operation.

In this article, we will take a look at all the steps, from physical installation to fine-tuning APN access points, which often cause a lack of Internet even when there is a signal, learn how to diagnose a problem if a phone writes “No network”, and what hidden settings can block registration on the network of a particular provider.

Preparation of equipment and compatibility check

Before you start the software setup, you need to make sure that the physical health of the components. the SIM card tray in Xiaomi smartphones is usually located on the lower or lateral end of the case and requires the use of a special clip to extract. Carefully examine the golden contacts on the map itself: they should not be scratched, oxidized or contaminated, which can disrupt electrical contact.

It is important to consider the format of the card, as modern models of Redmi and Poco often use combined slots. SIM-The card may not be possible simultaneously with the microSD card, in such cases, you need to choose the priority: expand the memory or use two numbers.

⚠️ Warning: Never try to insert the tray back into the phone unless the SIM card is perfectly flat.Forced closure can cause the contacts inside the slot to mechanically damage or the tray itself to break.

Global versions of Xiaomi smartphones are usually unlocked, but devices imported from other countries under gray schemes may have software restrictions. If you install a card of another operator, the device requests an unlock code, you will need to contact the original seller or use specialized software.

Physical installation and initial launch

After visual inspection, you can move to the installation. Turn off the smartphone completely so that the system correctly polls the status of the ports on the next turn on. Use a clip from the kit or a thin object to press the hidden mechanism in the tray hole. Remove the module and place SIM-map in the appropriate recess, observing the form of the cut.

Set the tray back into the case before the characteristic click. Now turn the device on with the side power button. As you boot the Android operating system, you'll have a hardware survey. If the map is working and properly installed, the signal level indicators and the name of the carrier should appear at the top of the screen, in the status bar area.

In some cases, especially when using old communication cards, the phone may request a phone. PUK-This data is usually provided by the operator when buying a SIM card or is located in the user's personal account, entering the wrong pin code several times in a row will lead to the locking of the card, which will require unlocking. PUK.

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If the SIM card tray is difficult to open, don't use excessive force.Drop a microscopic amount of silicone lubricant on the end of the tray, but make sure that the substance does not get inside the smartphone.

Notice the behavior of the indicators. Blinking the network icon or constantly searching can indicate poor contact or software failure, in which case it helps to re-arrange the map or clean the contacts with a soft eraser. 5G It is important that the card also supports this standard, otherwise the phone will work in mode. 4G/LTE.

Network settings in the MIUI and HyperOS menu

If the physical installation is successful but the Internet is not working, you need to check the network settings in the shell interface. → SIM-Maps and mobile networks. All profiles are displayed here. Make sure the switch opposite the SIM card is activated and the "Use Mobile Data" slider is on.

The preferred network type menu recommends choosing 5G/4G/3G/2G (auto) mode, which will allow the phone to automatically switch to the fastest available communication standard. Forced limiting only to 3G or 2G can be used as a temporary measure in areas of poor coverage, but for everyday use it is inefficient.

VoLTE (Voice over LTE) is a feature that allows voice calls to be made over fourth-generation networks, which greatly improves audio quality and speeds up connection. If your operator supports this technology, the corresponding icon can appear in the status bar. Activation is done in the same SIM card settings menu.

Manual configuration of APN access points

A common reason why a SIM card is active for calls but the internet is not working is the lack or incorrect settings. APN (Access Point Name: Xiaomi smartphones usually receive this data automatically through the SMS-A message from the operator at the first registration. If this does not happen, you must enter the parameters manually.

To do this, go along the Settings path. → SIM-maps and mobile networks → Select a SIM card. → Access points (APN). Click the New Access Point button or the plus icon, and you'll need to enter the data that you can find on your carrier's official website, and you'll usually need to fill in only the Name fields and «APN».

Name: MTS Internet


APN: internet.mts.ru




Type of authentication: PAP or CHAP




Type APN: default,supl




APN Protocol: IPv4/IPv6

Once you have entered all the options, be sure to click the "More" button (three dots in the corner) and select "Save." Then go back to the previous menu and activate the created access point by setting a marker next to it. Without saving the changes, the setting will not take effect, and the Internet will not work.

⚠️ Note: When creating a new access point, do not change the Proxy and Port fields unless explicitly required by your operator. Having third-party proxy servers can completely block the connection or redirect traffic through third parties.

Activation of eSIM on Xiaomi smartphones

Xiaomi’s flagship models are increasingly equipped with eSIM technology, which allows you to use a virtual SIM card without a physical medium, activating such a profile requires a stable connection to Wi-Fi, since profile data is downloaded from the operator’s network. The process begins with the Settings menu → SIM-maps and mobile networks → Add the tariff.

You will need to activate it. QR-A code provided by the carrier, or a special application of the operator: point the smartphone camera at the code or scan it through the system interface, the phone will download the profile, and then a new operator will appear in the list of SIM cards. It is important to note that multiple eSIM profiles can be stored on a single device, but usually only one or two are active at a time depending on the model.

The advantage of eSIM is the ability to quickly switch between tariffs in different countries, which is especially important for travelers. However, when you reset your phone to factory settings, eSIM profiles can be deleted, so it is recommended to back them up or request new ones. QR-codes from the operator before formatting.

Diagnostics and Solving Registration Problems

If after all the manipulations, the phone says "No network" or "Only emergency calls," you need to do a deep diagnostic, the first step should always be to restart the device. If that doesn't work, try to remove the SIM card and check it on another phone, which will localize the problem: the card itself, the phone or the operator's settings are faulty.

You can check the status of the radio module in the developer settings or in the engineering menu (accessible under ##4636###) to make sure the radio module is not software-enabled, and it's also worth checking if In-Air mode is on, which blocks all wireless connections, and sometimes resets the network settings, which returns all mobile connection parameters to factory values, help.

In rare cases, the problem lies in frequency incompatibility. Xiaomi smartphones designed for the Chinese market may not support some LTE Band frequencies used by Russian or European operators. Checking the model specifications on the manufacturer's website will help you to understand whether the device works in the ranges of your region.

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If the SIM card is not detected in any phone, and the contacts are clean - most likely, the card has failed and requires replacement in the cabin of the operator.

Frequently Asked Questions (FAQ)