How to properly connect and configure two SIM-Maps in the phone Xiaomi: instructions 2026

Introduction: Why do we need two? SIM-cards in a Xiaomi smartphone

Modern Xiaomi smartphones – whether it is the models of the line of Redmi Note, Poco or the flagship Mi – almost all support the work with two models. SIM-This is a feature that's becoming increasingly popular, one for work, another for personal calls, or a combination of a local operator and a tourist. SIM But how to set this option up to avoid problems with connection, balance, or priority of networks?

In this article, we will look at all the steps from the physical installation of maps to fine-tuning network parameters, and we will focus on common errors that cause the second part of the system to be used. SIM It may not catch the network or conflict with the first, and we will also find out which Xiaomi models support hybrid slots (where the second slot is combined with a memory card), and how this affects the functionality of the device.

If you just bought a new Xiaomi 14 or Redmi Note 13 Pro+, Or you've been using your smartphone for a long time, but you've never tried two-sim mode, which is a guide to avoiding the typical pitfalls.

1. Verification of support for two SIM-Maps in your Xiaomi model

Not all Xiaomi smartphones are equally useful when it comes to two. SIM-For example, some models for the European market (Xiaomi Mi) A3) They have one physical slot and the other one. SIM It's emulated via eSIM. Others, like Poco. F5, support 2 nanonom-SIM + microSD, but only if you don't use a memory card. Let's see what your device supports.

The most reliable way is to look at the specifications on the official Xiaomi website or in the documentation for the device.

• 📱 Dual SIM (Dual Standby – both cards are active, but only one can ring at a time;
• 🔄 Dual SIM Dual Standby (DSDS) — Both cards work in parallel (a call to one does not block the other);
• 🖥️ Hybrid slot - the second slot is combined with a microSD connector (you will have to choose: the second one) SIM memory-card).

If there is no box or instructions at hand, check the model through Settings. → The phone. → Then compare it to our compatibility table:

Important: Hybrid slot models (like the Redmi Note 12 Pro) require a choice of either a second slot. SIM, You can't use both at the same time.

Physical installation SIM-maps: step-by-step instruction

Before you set up the software, you need to insert the cards into the slot correctly. Errors at this stage can lead to the phone simply not seeing one or both of them. SIM. Follow the instructions:

1. Turn off your phone to avoid damaging your contacts.
2. Find a tray for SIM-In some models (such as the Xiaomi Mix Fold 3), the slot is hidden under the lid.
3. Use a paper clip or a special key (comes with it) to remove the tray. Carefully press until you click.
4. Place it. SIM-cardboard: 📇 nano-SIM (the smallest format - necessarily the correct side (skip to the corner of the tray); 🔄 If the slot is hybrid, select the priority: SIM microSD; ⚠️ Do not use micro-SIM adapters – they can damage your contacts.

Insert the tray back before the click and turn on the phone.

Checklist before installation:

If, after inclusion, one of the SIM not determined:

• 🔍 Check if the card is inserted correctly (turn the tray over and look at the contacts);
• 📵 Try inserting the card into another slot (if the phone supports it);
• 📡 Make sure that SIM-The card is activated by the operator (sometimes new cards require a call or a call). SMS activate).

⚠️ Note: If you use Xiaomi with eSIM support (e.g. Xiaomi 13 Lite), the second is the SIM In this case, the physical slot is only one, and the second card is configured via the Settings menu. → SIM-maps and mobile networks → Add a mobile fare.

Set-up of parameters SIM-card MIUI

After successful installation, you need to set the priorities of calls, the Internet and SMS. By default. MIUI can appoint the principal SIM The card that was inserted first, but it's not always convenient:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Control. SIM-Here you will see both cards, SIM 1 and SIM 2).
3. Assign names to cards (such as "Worker" and "Personal") to avoid confusion.
4. In the priority section SIM-pick out the cards: 📞 Calls are what. SIM default; 💬 SMS — Which map to send messages to; 🌐 Mobile data - which is the SIM will distribute the Internet.

"Always ask"

For supported models 5G (for example, Xiaomi 13T Pro) pay attention to network settings:

• 📶 Go to Settings. → SIM-maps and mobile networks → [choose SIM] → Type of network;
• 🔄 If 5G Not catching, try to manually select LTE/4G — Sometimes it solves the connection problem;
• ⚡ Enable "Enhanced mode" 4G" (VoLTE, if the operator supports.

💡

If you have trouble connecting to the second SIM, Try turning off the first card for 30 seconds, then turn both back on.

How do you check if you've set up? Make a test call with each one. SIM or send SMS. If one of the cards is not working, restart the phone and check again.

4. Solving problems with the second SIM-card

Even after the correct installation, the second SIM It can be unstable, like not catching a network, or disconnecting or conflicting with the first card, and let's look at the typical problems and how to solve them.

Problem 1: Second problem SIM not determined

If the phone doesn’t see one of the cards:

• 🔧 Check your physical condition. SIM — Possibly damaged contacts (sweat them with a rod);
• 📱 Restart your phone - sometimes MIUI Does not recognize the card after hot replacement;
• 🔄 Change the cards if the second one is SIM I got the first slot, the problem is in the slot;
• 📡 Update the firmware MIUI — In the old versions there were bugs with recognition of two cards.

Problem 2: There is no network on one of the SIM

If the card is defined but the network is missing:

• 📶 Manually select the operator in Settings → SIM-map → [choose SIM] → Network operators;
• 🔄 Switch the network mode from 5G/4G/3G Only 4G (sometimes);
• 📵 Check the balance and status of the service with the operator – possibly blocked for non-payment;
• 🔧 Reset network settings: Settings → System system → Resetting settings → Reset your Wi-Fi, mobile network and Bluetooth settings.

Problem 3: Conflict between SIM-map

If you call one SIM The second one is off (typical for Dual). SIM Single Standby):

• ⚡ Enable VoLTE for both cards (if the operator supports the card);
• 📞 Use the “Always Ask” option when making calls to manually select active calls. SIM;
• 🔄 Check if the aircraft mode is turned on for one of the cards (occurs when there are failures) MIUI).

⚠️ Note: Some Xiaomi models (e.g. Redmi) 9A) second-second SIM It can shut down when you're online on the first one, and that's a hardware limitation, and you can only fix this problem by changing your phone or turning off your mobile data on your main cell phone. SIM.

5. Optimization of battery consumption when using two SIM

Two active SIM-The cards increase the battery load, as the phone is constantly scanning the networks of the two operators. MIUI There are ways to reduce energy consumption without losing functionality.

Tips for saving charge:

• 🔋 Turn off background network scanning for second SIM: Settings → SIM-map → [choose SIM] → Advanced settings → Network search in the background;
• 📶 Use the regimen. 2G second SIM, If you only need it for calls: Network type → Only 2G;
• ⚡ Enable the energy saving mode for MIUI: Settings → Battery. → Energy saving regime;
• 🔄 Set up automatic shutdown of mobile data on the second SIM at night (through Settings) → Mobile network → Data limit).

If you notice that the battery is going down too quickly, check the consumption statistics in Settings. → Battery. → Use of the battery if "SIM-2′′ card consumes more than 10% of the charge – try to turn it off for a time when it is not needed.

💡

The optimal balance is to leave the main SIM on 4G/5G for the Internet, and the second to be translated into 2G It'll save you up to the phone. 15% charge without loss of functionality.

6.Use of two SIM Internet: How to distribute traffic

One of the useful features of Xiaomi is the ability to use mobile Internet from both SIM-It's convenient if you have different rates, like unlimited on one card and cheap traffic on the other.

How to set up:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose. SIM-The card you want to use for the internet.
3. Activate the option "Mobile Data".
4. If you need to switch between cards, use the Mobile Data widget on the home screen.

Features:

• 🌐 On most Xiaomi models, the Internet can be active only with one. SIM;
• 🔄 To switch, you need to disable mobile data on the first card and turn on the second card;
• ⚡ Some operators (for example, MTS or Beeline) block the simultaneous use of two SIM internet-based;
• 📡 The Wi-Fi (access point) will be used to distribute the SIM, mobile data included.

How to distribute the Internet with two SIM If you need to switch quickly (for example, when traffic on one card ends), add the Mobile Data widget to the home screen":

1. Long tap on the main screen → Widgets;
2. Find "Mobile Data" and drag it to the screen;
3. Now one tap can turn off the Internet on one SIM switch on.

⚠️ Note: On models with MediaTek Helio (e.g. Redmi Note 11) when switching between SIM And you can have a delay of up to 30 seconds for the Internet.

7. eSIM Compatibility: How to Use a Virtual SIM

New Xiaomi models (starting with Xiaomi) 12T Xiaomi 13 Lite and eSIM support virtual SIM-A card that allows you to use a second number without a physical slot, which is convenient for travel or corporate fares.

How to activate eSIM:

1. Get it. QR-Operator activation code or data (e.g. MTS, Tele2 or Tinkoff Mobile support eSIM).
2. Go to Settings. → SIM-maps and mobile networks → Add a mobile fare.
3. Select "Add with help" QR-code and scan the operator code.
4. Confirm activation – eSIM will appear in the list SIM-map.

Limitations of eSIM in Xiaomi:

• 📱 Not all models support eSIM (check the specifications);
• 🔄 Only one eSIM can be used at a time. + physical SIM (Two eSIMs are not supported);
• 📵 Some operators (e.g. Iota) do not provide eSIM for individuals;
• ⚡ When you reset your phone to factory settings, the eSIM is deleted – save QR-re-activation.

How to delete eSIM: If you no longer need a virtual card, do the following:

1. Go to Settings → SIM-cards and mobile networks;
2. Select eSIM and click “Delete mobile tariff”;
3. Confirm removal.

8. Alternative ways of using two numbers

If your Xiaomi doesn’t support two physical SIM (For example, you have Xiaomi Mi. A3 with one slot, there are workarounds:

Method 1: Appendices for the second number

Services like Google Voice, DingTone or 2ndLine It allows you to get a virtual number for calls and SMS The downside is dependency on a stable connection.

Method 2: Portable Wi-Fi router with SIM-card

If the second SIM It is only necessary for the Internet, you can use portable 4G-router (e.g. Xiaomi Mi Wi-Fi Router) 4G). Put the second one in it. SIM And connect to his network from his phone.

Method 3: Dual Apps (Dual Apps)

V MIUI There's a Dual Apps feature that allows you to clone messengers (like WhatsApp or Telegram) for two accounts. SIM, It will help to separate personal and work correspondence.

How to turn on:

1. Go to Settings. → Annexes → Dual Apps;
2. Choose a messenger and create a second account.
3. On the main screen will appear a duplicate of the application with a different color icon.

Pros and cons of alternatives:

FAQ: Frequent questions about two SIM Xiaomi