How to do another SIM-Main map of Xiaomi: 3 ways + lip-service MIUI

You just put a second one in Xiaomi. SIM-Is the phone persistently using the old one for calls and mobile Internet? Or the operator offered a profitable rate, but everything is fine. SMS Do they come to another number? the problem is familiar to most owners of two-sim smartphones Redmi, POCO Or Mi. Fortunately, in MIUI There are several ways to appoint another. SIM-Default card – from basic settings to hidden functions that are not written about even in official instructions.

In this article you will find:

• 🔧 3 working methods of shifting SIM default (including the method for models without a physical select button)
• 📊 Comparative table of opportunities SIM1 vs SIM2 multiple-version MIUI
• ⚡ Secret settings that allow you to flexibly manage your calls and internet priorities
• ⚠️ Typical errors that don’t save settings (and how to avoid them)

Important: the instructions are relevant for all modern Xiaomi smartphones based on MIUI 12-14 and HyperOS, including the Redmi Note 12/13, POCO X5/F5, Xiaomi 13/14 and older devices (subject to updated software). If your phone runs on Android One (for example, Mi A3), some menu items may differ - we will also talk about this.

1. Basic method: change the default SIM through the MIUI settings

The most obvious and universal method is to use a standard settings menu that is suitable for 90% of users and takes no more than a minute.

1. Open the Settings app (the gear icon on the desktop).
2. Go to section. SIM-Maps and mobile networks (in some firmwares may be called Mobile Network or Dual Network) SIM).
3. Tap on the Settings item SIM-maps (or Management) SIM-map).
4. Select Voice Calls or Calls – here you can assign SIM for outgoing calls.
5. Similarly, set up Mobile Data and Messages (SMS).

A list of available ones will appear on the screen. SIM-maps (usually) SIM 1 and SIM 2) Choose the right one and confirm the change. Ready! Now all outgoing calls, SMS Mobile traffic will use the selected card.

The most important thing is that if you use eSIM (virtual) SIM-The map, its settings may be in a separate section, for example, in Xiaomi 13 Pro, the path will be: → SIM-map → Also note that some operators (e.g. Tele2) may block the change. SIM default for subscription fees - in this case, a call in support will be required.

Fast SIM change via notification panel (methods for MIUI 13+)

Not everyone knows, but in the latest versions. MIUI change SIM-The default card is directly from the notification bar without going into the settings. This method is convenient if you need to temporarily switch to another card (for example, for a single call).

How it works:

1. Swipe your finger down from the top of the screen to open the notification bar.
2. Press and hold the Mobile Network icon (or SIM-cards if you have two icons).
3. In the window that opens, select the tab SIM-map.
4. Put it on the right foot. SIM-map under-point Calls, SMS or mobile data.

The advantage of this is speed, but there are also disadvantages:

• ❌ Settings are reset after the phone is restarted (as opposed to the method via Settings).
• ❌ Not all Xiaomi models support this feature (e.g., on Redmi). 9A She's gone).
• ❌ You can’t set separate priorities for different types of connections (e.g., calls through a phone or phone). SIM1, and the Internet SIM2).

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If there is no badge in the notification panel SIM-maps, add it manually: Settings → Notification panel → Edit badges → find "SIM-"Drag" and drag to the active area

3 Advanced Settings: Priorities for Calls, SMS and the Internet

MIUI It allows you to flexibly adjust which SIM-So the map will be used for different types of connections, for example, you can make it so that you can do this:

• 📞 Calls were coming through SIM 1 (cheap fare)
• 🌐 The Internet worked through SIM 2 (unlimited traffic)
• 💬 SMS went through SIM 1 (for confirmation of payments)

For this:

1. Go to Settings. → SIM-maps and mobile networks → Settings SIM-map.
2. Select the Priority item SIM-cards (or default settings).
3. Set each option separately: Voice calls → SIM Mobile data → SIM Messages (SMS) → Select SIM

Important: If you use VoLTE (4G calls), SIM priority for calls and mobile data must match, otherwise calls will be dropped or go over 2G.

4. Hidden MIUI features: how to assign a default SIM to specific contacts

Few people know, but in MIUI You can link specific contacts to a specific SIM-It's convenient if you have a map:

• 💼 You're working and personal. SIM, You want your colleagues to call you through your work number.
• 🌍 You often call abroad and want to use it. SIM competitively.
• 🏦 For bank calls, you need to use a specific SIM (For example, with a mobile bank).

How to set it up:

1. Open the Contacts (or Phone) application.
2. Choose the right contact and tap on it.
3. Click Edit (pencil icon).
4. Scroll down to the field. SIM-Default card (or preferred card) SIM).
5. Select SIM 1 or SIM 2 and save the changes.

Now, when you call that contact, the phone will automatically use the SIM you choose. Unfortunately, this feature only works for outgoing calls. For incoming calls, both SIMs will be sent (if they are active).

5. Problems and Errors: Why SIM Settings Aren't Saved

Sometimes users find that when they change their SIM, the default settings are reset or not applied, and here are the most common reasons and solutions:

⚠️ Note: If after restarting the phone settings SIM They are reset, check if you have a cache cleaner application (such as Clean Master or Security) that can delete system settings.

If none of these methods worked, try resetting your network settings:

1. Go to Settings. → SIM-maps and mobile networks → Resetting network settings.
2. Confirm the action (you will need to enter) PIN-code, if it is installed).
3. Reboot your phone and reset the SIM setting by default.

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If the problem persists after reset, check the physical condition. SIM-Damaged contacts or improper cropping of nano-SIM can cause malfunctions.

6. Features for models with eSIM and hybrid slots

Owners of Xiaomi flagship models (for example, Xiaomi 13 Ultra, Mix Fold 3 or Xiaomi). POCO F5 Pros) are often encountered with hybrid slots where either two nano-SIMs or one nano-SIM can be used. + Some devices also support eSIM (virtual memory card). SIM-In these cases, setting up SIM defaults to nuance.

For hybrid slots:

• 🔄 If you use a memory card, the second SIM-The card will be unavailable to change. SIM By default, you will have to remove the microSD.
• 📱 In some models (for example, Redmi Note 12 Pro)+) priority is given to physical SIM, not eSIM.

For eSIM:

1. To assign eSIM to the primary, go to Settings → SIM-map → ESIM management.
2. Choose Use for and specify Calls, SMS or Mobile Data.
3. If the eSIM does not appear, update the firmware or reinstall the eSIM profile through the operator app.

On some firmware (e.g. HyperOS on Xiaomi 14), the eSIM may conflict with the physical SIM.

⚠️ Note: If the physical eSIM has stopped working after activation SIM, Try to turn off the Double mode. SIM In the settings, then turn it on again, which will reset priorities and cause the system to redefined the maps available.

Alternative methods: annexes and ADB-team

If standard methods do not work (for example, on custom firmware or after an unsuccessful update), you can try the side of the application or ADB-team.

Method 1: Application "SIM Settings"

Google Play has utilities like SIM Settings or Dual SIM Selector that allow you to flexibly manage SIM settings.

• ⚠️ Many of these apps require root rights.
• ⚠️ Some may contain advertisements or malicious code.
• ✅ Best option — MIUI Hidden Settings (designed specifically for Xiaomi).

Method 2: ADB-Teams (for experienced users)

If you're familiar with ADB, you can manually prioritize SIM through the command line. For example, to make SIM 2 the primary calling option, use:

adb shell settings put global preferred_network_mode1 9


adb shell settings put global preferred_network_mode2 9




adb shell settings put global multi_sim_data_call 1




adb shell settings put global multi_sim_voice_call 1

Where preferred_network_mode1 and preferred_network_mode2 — setting SIM1 and SIM2 respectively, and multi_sim_data_call and multi_sim_voice_call Prioritize data and calls.

Warning: misuse of ADB can cause communication loss or network resets. Make a backup before experimenting!

FAQ: Frequent questions about changing the default SIM to Xiaomi