How to turn it on SIM-Map on Xiaomi: from installation to setting up mobile Internet

You just bought a new Xiaomi smartphone or installed a new one. SIM-This problem is familiar to many users of the brand, from budget Redmi to flagship Mi and Poco. Most often, the reason is not a hardware malfunction, but the wrong installation or setting up of the SIM card. In this article, we will discuss all the steps: from the physical installation of the module to the software activation of mobile communication, including nuances for devices with hybrid slots and support for two SIM.

Xiaomi smartphones feature flexible network settings that sometimes get lost after updates or reset to factory parameters. For example, in the models of Redmi Note 12 and Poco X5, the automatic operator selection can be disabled by default, and in the Mi 13, the APN settings for 4G/5G are hidden. We will explain in detail how to avoid typical errors and what to do if the phone still does not catch the network after all the manipulations.

Preparation: what kind SIM-The card supports your Xiaomi

Before installing a SIM card, check its compatibility with your device. Modern Xiaomi smartphones support three form factors:

• 📱 Nano-SIM (most common, used in 99% of models after 2016)
• 🔄 Hybrid slot (contains either 2 Nano-SIMs or 1 Nano-SIMs) + microSD)
• ⚡ eSIM (only in flagships: Xiaomi 13 Pro, Mix Fold 3 and newer)

For example, Redmi 10C has a hybrid slot, and Poco F5 has two separate slots under Nano-SIM. If you use two SIM cards, one of them can only work in 2G/3G mode (depending on the model).

Important: If your Xiaomi is released before 2018 (e.g. Redmi) 5A or Mi A1), It may not support the modern USIM-VoLTE cards, in which case, ask the operator for the old one. SIM Update the firmware to the latest version MIUI.

Step-by-step instruction: how to insert SIM-map

The process of installing a SIM card seems simple, but many users make mistakes at this stage.Follow the instructions to avoid damaging the slot or contacts:

1. Turn off your smartphone (required!) Removing or installing the SIM card when power is on can result in a short circuit.
2. Find a slot for SIM-It's usually located: 🔽 On the top edge (for example, in Redmi Note 11) 🔽 On the left side (in most Poco models) 🔽 Under the removable cover (in older models, for example, Redmi). 4X)

paper-clip

downward contact

• 📱 SIM1 — The main slot (usually supports) 5G)
• 📱 SIM2/microSD — Additional slot (may limit speed)
• Carefully insert the tray back to the point. Make sure it's not skewed.

Make sure the tray is inserted exactly|Check that SIM-card doesn't stand for edges|Remove the protective film from contacts SIM (if)|Turn on the phone only after clicking fixation-->

If the phone does not see the SIM card after turning on, try:

• 🔄 Restart the device (sometimes the system does not recognize the new one) SIM immediately).
• 🧹 Gently wipe your contacts. SIM-cards and slots soft eraser (oxidation of contacts is a frequent cause of malfunction).
• 🔧 Check the tray for damage (curved contacts, cracks).

⚠️ Warning: Do not use metal objects (knives, forks) instead of a paper clip to remove the tray.This can damage the fixing mechanism and the slot will stop opening.

Activation. SIM-maps in Xiaomi settings

Physically installing a SIM card is only half the battle, and to make it work, you have to activate it in the phone menu, and the interface may vary slightly depending on the version of MIUI, but the overall algorithm is this:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-If there are two, they will be marked as SIM1 and SIM2).
3. Activate the switches: 📶 Mobile data (for Internet access) 📞 Calls (for voice communication) 💬 SMS (for messages)

Type of network

• 🌐 5G (preferably for modern models
• 🌐 4G/3G/2G (Auto) - for stability in areas with poor surface

If 5G is not available, upgrade to the latest version of MIUI or check your carrier’s network support. For example, in Redmi Note 10, 5G Pro runs on SIM1 only, and SIM2 is limited to 4G.

💡

If, after activation, SIM-The phone stopped seeing Wi-Fi, restart the device. MIUI There is a conflict of drivers of the communication module.

For two. SIM-maps set priorities:

• 📞 Basic SIM For calls, select the SIM from which outgoing calls will be made by default.
• 🌐 Basic SIM For mobile data, determine which SIM will be used for the Internet.
• 🔄 Allow data switching – turn on if you want to manually select a SIM for the Internet.

Configuring APN access points for mobile Internet

If SIM-The card is recognized, but the mobile Internet does not work, most likely, the parameters are not configured. APN (Access Point Name: These are individual settings for each carrier that the phone has to load automatically. If that doesn't happen, add them manually:

1. Go to Settings. → SIM-maps and mobile networks → [yours SIM] → Access points (APN).
2. Click Add and fill in the fields according to your operator's data. Examples for popular providers:

After filling, save the settings and restart the phone. If the Internet still doesn't work,

• 🔄 Make sure that mobile data is included for this SIM-map.
• 📡 Check network coverage in your area (e.g, 5G It may not be available in remote areas).
• 📞 Call the operator and request resubmitting settings APN (usually comes SMS configurationally).

The solution to the problem: why Xiaomi does not see SIM-map

If, after all the manipulations, the phone still doesn't recognize the SIM card, the reasons may be hardware or software.

Hardware malfunctions

• 🔌 Damaged slot - if the tray is not fixed or the contacts are bent, repair is required.The average cost of replacing the slot in the service center is 1,500-3,000 ₽.
• 💧 Moisture: If the phone falls into the water, the contacts oxidize. Try drying the device in rice for 24 hours or contact the service.
• 🔋 A faulty modem - if none SIM not working, the communication module may have failed (repair costs 3,000–8,000) ₽).

2. Programmatic failures

• 🔄 Reset Network Settings: Go to Settings → System system → Resetting settings → Reset the network settings.
• 📱 Update of the firmware: outdated version MIUI may not support new SIM-Check the updates in Settings → The phone. → Updating the system.
• 🛠️ Manual switching of network mode: in Settings → SIM-map → [yours SIM] → Type of network try to manually select only 3G or 2G — Sometimes it helps to wake up the module.

⚠️ Note: If you use custom firmware (like LineageOS or Pixel Experience), the problem may be the lack of drivers for the communication module. MIUI or a firmware with support for your model.

To diagnose hardware problems:

1. Try inserting. SIM-Map to another phone – if it works, the problem is your Xiaomi.
2. Set another one. SIM-card in your Xiaomi – if it is also not recognized, the slot or modem is faulty.
3. Check if the moisture indicator (red mark) is on in the slot for SIM-map.

💡

If the phone stopped seeing SIM-If you fall or hit the card, don't try to disassemble it yourself. 80 percent of the time, it damages the antenna plume.

Features of setting up eSIM on Xiaomi

Xiaomi flagship models (starting with Xiaomi) 12T Pro and Mix Fold 2 support eSIM technology SIM-A card that you don't have to physically insert to activate it:

1. Make sure your operator supports eSIM (for 2026 it is MTS, Beeline, MegaFon, Tele2).
2. Get it. QR-code or activation code from the operator (usually sent by email or in the personal account).
3. Go to Settings. → SIM-maps and mobile networks → Add a mobile network.
4. Select Download. SIM-map and scan QR-code or enter the code manually.
5. After activation, set up the eSIM as normal. SIM-Map (Priority your calls and the internet).

The advantages of eSIM:

• ✅ There is no risk of damaging the physical slot.
• ✅ You can switch between fares quickly (e.g. one for work, one for travel).
• ✅ Supports Dual SIM + eSIM (for example, in Xiaomi 13 Ultra you can use 2 physical devices) SIM + 1 eSIM).

Limitations:

• ❌ Not all carriers support eSIM (e.g. Yota and virtual carriers do not).
• ❌ When resetting the phone to the factory settings, the eSIM can be deactivated (you will have to re-download the profile).

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when setting up SIM-Xiaomi maps. Here are the most common ones and ways to prevent them:

• 🚫 Using a microSD instead of a second SIM In a hybrid slot without rebooting.Always reboot your phone after you've replaced it. SIM to the memory card and back.
• 🚫 Installation SIM-The contacts should be downwards and the cut should match the ledge in the tray.
• 🚫 Ignoring updates MIUI. Older firmware versions may not support new communication standards (e.g., VoNR for calls over the Internet). 5G).
• 🚫 Disable automatic network selection: If you manually select the operator, the phone may lose the network when moving between towers.
• 🚫 Use of damaged SIM-If there are scratches or chips on the card, replace it in the operator's cabin (usually free of charge).

If you travel frequently, set up roaming in advance:

1. B Settings → SIM-map → [yours SIM] → Roaming enable the option Data in roaming.
2. Check with the operator roaming rates or activate a special package (for example, "Travel without borders" at MTS).
3. Manually select a local operator in the host country (Settings) → SIM-map → [yours SIM] → Network operators → Manual search).

FAQ: Answers to popular questions

Limitation of operator

If the problem persists, check if your model supports 5G in your carrier’s bands. For example, the Redmi Note 11 does not support 5G at the n78 (3.5 GHz) frequency that Beeline uses.