How do you do it? SIM-Main map of Xiaomi: all ways

Modern Xiaomi smartphones (including the Redmi line and POCO) Supports the work of two SIM-- cards at the same time, but often users face a problem: how to make one of them the main one for calls, SMS By default, the system can automatically select a SIM for different tasks, which is not always convenient - especially if you have a tariff with unlimited minutes on one card and profitable Internet on another.

In this article, we will discuss all possible ways of appointment. SIM-Default cards on Xiaomi devices, including hidden settings for older versions MIUI You will learn how to link a specific SIM to calls, messages or mobile data, as well as what to do if the necessary Suddenly options disappeared after a firmware update. Separately, we will consider the nuances for popular models - from Redmi Note 12 to flagship Xiaomi 14.

Why it's important to set up SIM-default-card

Without proper configuration of the main SIM-You may encounter a number of inconveniences:

• 📞 Calls leave the “wrong” SIM, spending money on expensive fare.
• 💬 SMS (Including confirmation codes, they arrive on an inactive card.
• 🌐 Mobile Internet is connected via a SIM with limited traffic.
• 🔄 Automatic choice SIM for different contacts, the settings are confused.

For example, if you have a business number on the first SIM and a personal number on the second, without a default binding, all outgoing calls can accidentally leave your personal number, and the same applies to the mobile Internet: if you do not fix the main SIM, the smartphone can connect to the network through a card with expensive roaming.

Method 1: Configure through «SIM-maps and mobile networks»

This is the simplest and most versatile method that works on all Xiaomi smartphones with MIUI 12 and newer (including Redmi 10/11/12, POCO X5/F5, Xiaomi 13/14).

1. Open the settings (cog icon on the desktop).
2. Go to section. SIM-maps and mobile networks (on some models - Mobile network).
3. Select the Settings item SIM-maps or management SIM-map.
4. Click on the SIM you want to make the main one (for example, SIM 1).
5. Activate options: 📞 Default calls 💬 SMS default 🌐 Mobile data (if necessary)

After saving the settings, check their work: make a test call or send an SMS. If the changes do not apply, restart the smartphone.

Calls leave with the right SIM|SMS ship off the main card|Mobile Internet is connected via selected SIM|Settings saved after rebooting-->

Method 2: Linking SIM to specific contacts

If you need to make certain contacts always make calls from a certain SIM (for example, for work – from the first, for family – from the second), use this feature:

1. Open the Contacts app.
2. Select the contact you want and click Edit (pencil icon).
3. Scroll down to the field. SIM-call-card.
4. Please specify SIM 1 or SIM 2 (depending on the need).
5. Save the changes.

Now, when you call that contact, your smartphone will automatically use a tethered SIM, which is useful if you have, for example, a corporate SIM for work calls and a personal SIM for others.

💡

If you're optional SIM-Call card is not in contact, update the Contacts app via Google Play or check settings in Settings → Annexes → Application management → Contacts → Permits

Method 3: Set up mobile internet for a separate SIM

If you need to ensure that mobile Internet always works through only one SIM (for example, with unlimited rates), do the following:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Mobile Data.
3. In the section SIM-Mobile data card specify the desired SIM.
4. Activate the switch to Enable mobile data (if it is turned off).

Please note: if you have the "Dual Communication" mode enabled 4G» (Dual 4G), The second SIM cannot work simultaneously on the network. 4G — It will automatically switch to 3G/2G. To avoid this, turn off Dual mode. 4G customized SIM-map.

Method 4: Hidden settings for older versions of MIUI

On smartphones with MIUI 11 and older (e.g. Redmi Note 8, Mi 9) settings interface SIM-If you don't find the options you want in the standard menu, try an alternative path:

1. Open Settings and go to About Phone.
2. Press 5-7 times on the MIUI version to activate the developer mode.
3. Return to the main Settings menu and open Additional (or Advanced Settings).
4. Choose. SIM-maps and manually assign the main SIM for calls, SMS data.

If this method does not work, try resetting the network settings:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Network Settings Reset (or APN Reset).
3. Confirm the action and restart the smartphone.

💡

On older versions of MIUI (up to 10 inclusive), the default SIM option may not be available, in which case only a firmware update or third-party applications (for example, Dual SIM Selector) will help.

Features of working with eSIM on Xiaomi

Xiaomi smartphones of the latest generations (starting with Xiaomi) 12T Redmi Note 12 Pro+) Support eSIM – Virtual SIM-To make it the main map:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Add Mobile Fee (if eSIM is not activated yet).
3. After activation, click on eSIM in the list of SIM cards.
4. Assign it by default for calls, SMS or mobile data (similar to a physical SIM).

If the problem persists, try updating your firmware to the latest version or reset your network settings (as described in Method 4).

FAQ: Answers to popular questions