How do two work? SIM-Maps in Xiaomi smartphones: a complete guide to setup and use

Xiaomi’s modern smartphones support two SIM-Cards at the same time is a feature that has become standard for most brand models, ideal for those who want to separate work and personal calls, use advantageous rates of different operators or stay connected while traveling abroad. However, not all users know how to properly configure duals. SIM, avoid conflicts between them and make the most of the device’s capabilities.

In this article, we will discuss all the nuances of working with two SIM-From basic setup to solving common problems, you will learn how to switch between cards, set priorities for calls and mobile Internet, and what hidden features are available in the mobile network. MIUI dualistic SIM. We will pay special attention to compatibility with 5G, limitations on using two cards and how to avoid common errors.

If you have just purchased the Redmi Note 12 Pro+, Poco X5 Pro or Xiaomi 13 Ultra and want to understand how to correctly exploit two SIM-The maps are the guide for you. We'll also look at the differences in the duality. SIM differentially MIUI (including MIUI 14 and HyperOS) and give recommendations on the choice of optimal settings for your tasks.

Before you get into the settings, it’s important to understand that not all Xiaomi smartphones support two physical ones. SIM-Some models (e.g. Xiaomi) 12S Ultra or Black Shark 5 Pro have a hybrid slot where the second one is the first one. SIM It competes with a microSD card. Check the specifications of your model on the official website or in the documentation.

1. Which Xiaomi smartphones support the two SIM-map

The vast majority of modern Xiaomi devices are equipped with dual SIM-There are different slots, but the implementation may be different, and we'll see what options exist and how to determine the type of slot in your phone.

The three main types of slots in Xiaomi smartphones:

• 📱 Two nano-SIMs (the most common variant) – support two physical cards at the same time. 13T Pro, Redmi Note 11 Pro+, POCO F5.
• 🔄 Hybrid slot (nano-SIM) + nano-SIM/microSD) — allows you to choose the second SIM, Or a memory card. Examples: Xiaomi 12 Lite, Black Shark 4.
• ⚡ eSIM + nano-SIM (rare but found in flagships) – one physical card + Example: Xiaomi 13 Pro (for some regions).

To find out the type of slot in your device:

1. Look at the smartphone box – usually there is a configuration of slots.
2. Use the model search on the Xiaomi website (Specifications section).
3. Put the paper clip in the tray for SIM — If there are two independent slots, it is a full-fledged dual slot.

In hybrid slots, when installing a microSD, the second SIM-The card automatically shuts down. If you're critically important to both of them. SIM, Choose models with two full-fledged slots (for example, Redmi). K60 pro POCO X5 Pro 5G).

2 How to insert two SIM-Maps in Xiaomi: step-by-step instructions

Installation of two SIM-Mapping in a Xiaomi smartphone is a simple procedure, but there are a few key points that will help you avoid mistakes.

What you'll need:

• 📌 Paperclip or special key for extracting the tray (goes with a smartphone).
• 📱 Two nano-SIM cards (if the slot is hybrid, select priority: second) SIM microSD).
• 🔍 Good lighting – small tray details are easy to lose.

Step-by-step installation:

1. Turn off your smartphone (recommended, but not necessarily for most models).
2. Find a tray for SIM-cards – usually located on the upper or lateral face of the device.
3. Insert the paperclip into the tray hole and press gently until it is pushed out.
4. Place it. SIM-scoring cards according to the markings (usually SIM 1 and SIM 2 signed).
5. Put the tray back in before the click.
6. Turn on your phone and wait for card recognition (it can take up to 30 seconds).

Critical point: if after installation one of the SIM-The cards are not identified, check if it is inserted correctly (the chip must be turned down) and if there is no damage to the contacts of the tray. In some cases, rebooting the device or cleaning the contacts of the card with dry cloth helps.

3. Setup of two SIM-card MIUI: basic

After installation SIM-Cards must be configured correctly to avoid confusion when calling, SMS and the use of the mobile Internet. MIUI There is a separate section of settings with flexible options.

How to open the settings SIM-map:

Go to Settings. → SIM-maps and mobile networks. Here you will see both installed maps (e.g., maps, SIM 1 (MTS) and SIM 2 (Tele2)). Click on any of them to customize individual settings.

Key settings for each SIM:

Mobile Internet Advice: If You Have Both SIM with active internet, but you want to use only one for data, go to Settings → SIM-maps and mobile networks → Mobile Internet and select the priority card. This will prevent unexpected traffic consumption from the wrong one. SIM.

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If you travel frequently, set up automatic network selection for the second. SIM. For that, in the settings. SIM select Automatic Selection in Network Operator section to avoid manual roaming search.

4. How to switch between SIM-cards at the time of the call or SMS

One of the most convenient dual functions SIM Xiaomi – the ability to quickly switch between cards right when calling or sending SMS. Let’s see how it works in practice.

Switching when an outgoing call:

• 📞 Open the phone application and dial the number.
• 🔄 Next to the call button will appear an icon SIM-map "SIM 1/SIM 2").
• 👆 Click on the icon to select the right card for the call.

If you didn't choose SIM In advance, the system uses the card set as a priority by default (configured in Settings). → SIM-To select a card manually each time, set the "Ask Always" option".

Switching when sending SMS:

The annex of the Communication follows a similar process:

1. Create a new message and enter the text.
2. Click on the icon. SIM in the upper right corner (or next to the number input field).
3. Select the card you want to send from SMS.

⚠️ If you use messengers (WhatsApp, Telegram), they are tied to a phone number, not to a phone number. SIM-To send messages from different numbers, you need two accounts in each messenger.

5. Features of working with 5G two SIM-map

With the advent of networks 5G dualist SIM The fact is that most Xiaomi smartphones (even flagship) do not support 5G both SIM Let's see how it works and how to get around the limitations.

How 5G working with two SIM Xiaomi:

• 📶 Only one. SIM may be used 5G — the second automatically switches to 4G/3G.
• 🔄 When you're calling on one. SIM The second may temporarily lose contact (depending on the model).
• ⚡ Some models (such as Xiaomi 13 Pro) have the option of “Dual” 5G “Stop-by-stop” but it doesn’t work in all regions.

How to check for support 5G on your model:

1. Go to Settings. → SIM-maps and mobile networks → [Choose. SIM] → Type of network.
2. If there's a list 5G — yours SIM The operator supports this technology.
3. Install. 5G priority SIM, And for the second, choose 4G auto.

⚠️ Attention, some firmware. MIUI option 5G If it does, try resetting the network settings (Settings) → SIM-maps and mobile networks → Resetting network settings) or updating software.

Compatibility table 5G dualistic SIM In popular models of Xiaomi:

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If it is critically important to have 5G both SIM, Pay attention to the flagship models with support for Dual 5G Standby (like Xiaomi 13 Ultra) – In most cases, you’ll have to choose a priority card for your smartphone. 5G, and leave the other 4G.

6. Common Problems and Their Solutions

Even with the right setup with two SIM-Xiaomi can have typical problems with maps, and we've collected the most common ones and ways to fix them.

Problem 1: Second problem SIM not determined

• 🔍 Check if the card is inserted correctly (the chip should be at the bottom).
• 🔄 Reboot your smartphone.
• 🛠️ Clear the contacts. SIM-silk-tray.
• 📱 Check it out. SIM In another phone, if it doesn’t work, the problem is in the map.

Problem 2: There is no mobile internet on one of the SIM

• 🌐 Make sure that for this SIM Mobile data included in the settings.
• 📡 Check if the correct network is selected (4G/5G instead 2G).
• 🔄 Manually select the operator in Settings → SIM-map → [Choose. SIM] → Network operator.
• 📞 Call the operator – the Internet may be disabled on the account.

Problem 3: Calls are reset or not passed

• 📵 Check the signal level – if it is weak, try switching to another network (3G instead 4G).
• 🔄 Turn off and turn on the plane mode again.
• 📱 Update the firmware - in older versions MIUI There were dual-sided bugs SIM.
• 🛠️ Reset network settings (Settings) → SIM-maps and mobile networks → Resetting network settings).

⚠️ Attention, if after the update MIUI both stopped working SIM-This may be due to regional firmware, for example, Chinese versions of software often do not support duality. SIM The solution is to run a global version. MIUI.

7.The Hidden Functions of Dual SIM Xiaomi

Besides the basic settings, Xiaomi has hidden features that do the job with two. SIM-And it's even more convenient. Most people don't know about them, but they can make the experience much better.

Function 1: Separate notifications for each SIM

You can customize different melodies and vibrations for calls from different SIM-For this purpose:

1. Go to Settings → Sounds and vibration → Call melody.
2. Select SIM 1 Call Melody and SIM 2 Call Melody.
3. Set unique sounds for each card.

Function 2: Automatic data switching

If you have limited traffic on one of them SIM, You can set up automatic switching to the second card when the limit is exceeded:

• 📊 Install Dual Apps (built into the app) MIUI).
• 🔄 Set up the switching rules in Settings → Annexes → Dual Apps.
• 📈 Set a traffic limit for the main SIM.

Function 3: Linking contacts to specific contacts SIM

You can link individual contacts to a specific SIM-Calls to the card always come from the right number:

1. Open the contact in the Contacts app.
2. Click Edit → By default.
3. Choose. SIM 1 SIM 2 for this contact.

Function 4: Quick switching SIM notice-curtain

V MIUI 14 and newer can be instantly switched between SIM-cards directly from the notification panel:

• 📱 Swipe down from the top edge of the screen to open the curtain.
• 🔄 Find the mobile data tile or SIM-map.
• 👆 Click on it to select an active one. SIM for the Internet or calls.

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If you need to switch between SIM-In the Internet maps, add the Mobile Data widget to the home screen, and then click and hold the blank space on the screen. → "Widgets" → Find the "Mobile Data" and drag it.

8 How to save battery power when using two SIM

Working with two SIM-The card increases battery consumption because the smartphone is constantly scanning the networks of the two operators, but there are several ways to optimize energy consumption without losing functionality.

Ways to save charge:

• 📵 Disable Network Search for Unused SIM (If it's backup. Go to Settings for that. → SIM-maps and mobile networks → [Choose. SIM] → Turn it on and off.
• 📡 Limit background activity for the second SIM: Settings → Annexes → Application management → [Select the application] → Mobile data.
• 🔋 Use the energy saving mode for the second SIM: Settings → Battery. → Energy saving regime → Settings → Limit background activity.
• 🌐 Turn off automatic network search in roaming (if not traveling): Settings → SIM-map → [Choose. SIM] → Network operator → Manually.

Additional advice:

If you don’t need mobile internet for the second time SIM, Turn off the data transmission for her:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose the second. SIM.
3. Turn off the option Mobile data.

⚠️ In some Xiaomi models (for example, Redmi Note 10 Pro) with two active models SIM-The card will not support VoLTE on one of them. HD-quality, check the VoLTE settings in Settings → SIM-maps and mobile networks → [Choose. SIM] → VoLTE.

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The most effective way to save charge is to turn off unused SIM For this, use the "Schedule on/off" function in the settings. SIM-map.

FAQ: Frequent questions about two SIM-maps in Xiaomi