How to activate SIM-Xiaomi map: all ways and solutions to problems

Activation. SIM-Xiaomi’s smartphone cards are a process that seems simple at first glance, and users face a lot of nuances in practice, from the banal “phone doesn’t see the SIM” to the operator’s network registration errors, especially for new Redmi devices, POCO Black Shark, where the manufacturer often makes changes to the interface MIUI.

In this article, we will analyze all possible activation scenarios: from the standard installation of a SIM card to solving problems with registration in the network. 4G/5G. You will learn how to insert the SIM into the tray, which settings to check first, and what to do if the phone stubbornly does not catch the network. Special attention will be paid to the features of two-symbol models and the nuances of working with virtual eSIM in the new flagships Xiaomi 14 Mix Fold 3.

If you just bought a smartphone or have problems after the upgrade MIUI — This guide will save you time when you go to the service center, illustrated with up-to-date screenshots and supplemented with expert advice on how to optimize your mobile network.

Preparation: which SIM-The card supports your Xiaomi

Before you insert the SIM into your smartphone, make sure it is compatible with your model. Xiaomi devices support three formats:

• 📱 Nano-SIM (4FF) — Standard for all modern smartphones (including the Redmi Note 12, POCO X5, Xiaomi 13T).
• 🔄 eSIM is a virtual SIM, available in flagships (Xiaomi 14 Pro, Mix Fold 2) and some models for the European market.
• ⚠️ Micro-SIM (3FF) — Older format, found only in very old models (e.g. Redmi) 3S 2016).

To check the supported format:

1. Find the official Xiaomi website page of your model (enter the name of the specs model in the search).
2. In the "Network" section, look at the "Type" line. SIM» (SIM card type).
3. For dual-sim phones, check if Dual is supported. SIM Dual Standby (DSDS) or dual SIM Dual Active (DSDA).

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If you have a smartphone with a hybrid slot (like the Redmi Note 11), remember: you can use either two Nano-SIMs or one. SIM + MicroSD card: You can't insert three elements at the same time!

Important for travelers: some Xiaomi models for the Chinese market (marked "China") ROM») They do not support Russian frequencies. 4G (Band 7, Band 20 bands, check compatibility on FrequencyCheck before buying.

2 How to insert SIM-Map in Xiaomi: a step-by-step guide

The process of installing a SIM seems trivial, but even here there are pitfalls. Follow the instructions to avoid damage to the tray or contacts:

1. Turn off the phone (required!) This will prevent short circuits during installation.
2. Find a tray for SIM-map: 🔍 On most models, it is located on the right end (for example, the Redmi Note 10 Pro, POCO F4). 🔍 In some flagships (for example, Xiaomi 13 Ultra) – on the upper end. 🔍 In foldable smartphones (Mix Fold 3) - on the bottom end.
3. Use a paper clip or a special key (included) to retrieve the tray. Insert it into the hole before you click.
4. Put it down. SIM-map into the tray contacts down, combining the bevelled corner with the groove.
5. For dual-symbol phones: 📶 SIM 1 — usually 5G (if). 📶 SIM 2 — can only work in 4G/3G (model).

Carefully insert the tray back before the click.

Make sure the SIM is inserted with contacts down|

Check that the tray is fixed (no backlash)|

Remove the protective film from the SIM (if any)|

Check that the paperclip is not bent (so as not to damage the tray)-->

Installation errors that lead to problems:

• ❌ Simka is inserted upside down (contacts do not touch the phone chip).
• ❌ The tray is not fully fixed (the phone does not recognize the SIM card).
• ❌ Using a Micro-SIM adapter in a Nano-SIM slot (may get stuck!).

Activation SIM-Maps: First Start and Setup of the Network

Once you have the SIM, turn on your phone. Most of the time, activation is automatic, but sometimes you need to manually adjust it. Let's look at both scenarios.

🔹 Automatic activation (for new SIM cards)

If you inserted a new SIM (for example, from MTS, Beeline, Tele2 or MegaFon), the phone should:

1. Find a new one. SIM and suggest activating it.
2. Automatically load settings APN (point).
3. Register in the network (network indicator will appear in the status bar).

A notification may appear on the screen: “New” SIM-Map detected. Network setup..." Wait until the process is completed (usually takes 1-2 minutes).

🔹 Manual setting (if the automatic does not work)

If your phone doesn’t catch the network or writes “No Services,” follow the steps:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if two of them).
3. Make sure the Mobile Data switch is active.
4. Click "Access points (APN)» Check if your operator has a profile, if you don't have one, add it manually (options can be found on the operator's website).
5. In the "Network Type" section, select «4G (preferably” or «5G» (if maintained).

MTS|

Beeline |

MegaFon |

Tele2.|

Yota|

Other-->

For dual-symbol phones:

• 📞 You can appoint the primary. SIM call-in.
• 🌐 Choose which SIM will be used for mobile Internet.
• ⚡ In some models (for example, POCO F5) You can also turn on "Dual connection". 4G», Make sure both SIMs work at the same time.

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If the phone doesn't see the SIM after installation, restart it first, which solves the problem 70 percent of the time without any additional settings.

4. Problem Solving: The phone can't see SIM-map

If the phone is not installed, it says, “No.” SIM-Cards, No Services or Not Registered Online, use this guide.

🔧 General steps to troubleshoot

Reboot the phone |

Check if the SIM is inserted correctly (extract and insert again)|

Make sure that the SIM card is activated by the operator (call from another phone)|

Check if the “Airplane” mode is on»-->

If the basic steps don’t help, go to the advanced methods:

Critical information: if after the update MIUI phone stopped seeing the SIM, the cause may be a failure in the module modemst1 and modemst2. In this case, only flashing through Fastboot or contacting the service will help.

🛠️ Advanced methods (for experienced users)

If the standard methods do not work:

1. Reset Network Settings: Go to Settings → System system → Resetting settings → Reset mobile network settings, which will remove stored Wi-Fi networks and settings APN.
2. Verification IMEI: Dial *#06# - if IMEI missing or incorrect, the SIM will not work. IMEI You will need an engineering menu or firmware.
3. Firmware Update: Go to Settings → The phone. → System updates if an update is available MIUI — Install it (sometimes fixes the bugs in the communication module).

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If the phone stops seeing the SIM after falling or getting moisture, do not try to disassemble it yourself. 90% of the time the problem is damage to the antenna module or the SIM tray contacts, and professional repair is required.

5. activation of eSIM on Xiaomi: features and settings

Virtual SIM-As eSIMs become more popular, Xiaomi is beginning to support them in its flagships, and eSIMs are now available in the following models:

• 📱 Xiaomi 13 / 13 Pro / 13 Ultra (for the European and Indian markets only).
• 📱 Xiaomi 14 / 14 Pro (global versions).
• 📱 Xiaomi Mix Fold 2 / Mix Fold 3.
• 📱 POCO F5 Pro (in some regions).

To activate the eSIM:

1. Make sure your operator supports eSIM (currently in Russia it is MTS, Beeline and Tele2).
2. Get it from the operator. QR-activation code or manual input data.
3. Go to Settings. → SIM-maps and mobile networks → Add a mobile network.
4. Select "Scan" QR-code or “Input data manually».
5. Follow the instructions on the screen. Once activated, the eSIM will appear in the list. SIM-map.

Limitations of eSIM on Xiaomi:

• ❌ You cannot use eSIM and physical SIM simultaneously SIM (Only one of them will be active for calls).
• ❌ Not all operators support the transfer of numbers from physical SIM eSIM (check with the operator).
• ❌ In some models, eSIM only works in a slot. SIM 2.

6. Optimization of mobile network on Xiaomi

Even if the SIM is activated, the speed of the Internet or the quality of the connection may leave much to be desired.

📶 Network priority setting

By default, Xiaomi often chooses suboptimal settings to manually prioritize:

1. Go to Settings. → SIM-maps and mobile networks → [choose SIM] → Type of network.
2. Choose «4G (preferably)” or “Only 4G» (if 5G unstable).
3. Activate the “Improved” option 4G (VoLTE) for clearer voice communication.

🔄 Resetting settings APN

If the internet is slow or disappears periodically:

1. Go to Settings. → SIM-maps and mobile networks → [choose SIM] → Access points (APN).
2. Click on the three dots in the top right corner and select Reset to Default Values.
3. Reboot the phone.

📡 Manual selection of the network

If the phone is constantly switching between 2G/3G/4G:

1. On the menu. SIM-Select the card "Select the network».
2. Turn off Automatic Selection.
3. Manually select your operator’s network (e.g, «MTS-RU» instead «MTS»).

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After the update MIUI missing 4G, Check if the settings have been dropped. APN. Often, the system resets the profile to a standard one, which may not support high-speed Internet.

7. Frequent errors and their solutions

Let’s analyze the typical problems faced by Xiaomi users when activating the SIM.

❌ Mistake: «SIM-card not supported»

The reason: the phone is locked under a specific operator (usually found in devices purchased abroad).

Decision:

• Check if the phone is unlocked for all carriers (dial ##4636## and see the lock information).
• If your phone is locked, contact the seller for an unlock code or use services like UnlockBoot.

❌ Error: “No registration on the network»

Cause: failure in the communication module or incompatibility with the operator frequencies.

Decision:

1. Check if your phone supports your carrier’s frequency (for example, the Redmi Note 12 is critical for Band 20 (800 MHz) band for coverage in rural areas).
2. Update the firmware to the latest version of MIUI.
3. If the problem remains, reset to factory settings (pre-do backup!).

❌ Mistake: «SIM-- The card is locked. PUK-code»

Reason: Three times injected infidel PIN-code.

Decision:

• PUK-the code is indicated on the plastic SIM holder or in the contract with the operator.
• If you lost PUK, contact the communication salon with a passport - it is impossible to restore it yourself!
• Note: After 10 incorrect attempts to enter PUK SIM is locked forever.

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If you travel frequently, keep PUK-code in a protected note (e.g., Xiaomi Notes with a password) will save you from problems when accidentally blocking the SIM.

FAQ: Answers to Frequent Questions