How to turn on the second line on the Xiaomi phone: instructions for all models

Xiaomi smartphones support dual technology SIM (two-way SIM-This allows two numbers on the same device, the ideal solution for separating work and personal contacts or saving on roaming, but many users have difficulty activating the second line: the phone does not see. SIM-map, it is not clear how to switch between operators, then the mobile Internet disappears. In this article, we will analyze all ways to include the second line on Xiaomi, including models with a hybrid slot, features MIUI 14/15 And the new HyperOS firmware.

It is important to understand that the configuration process depends on several factors: firmware version, type SIM-Nano-SIM and hardware support, such as flagship models like Xiaomi 14 Ultra or Redmi Note 13 Pro+ Supports full-fledged Dual SIM + MicroSD, whereas budget devices (e.g. Poco) M6) You can have a hybrid slot where you have to choose between the second. SIM-We're going to look at all the scenarios, from basic activation to solving typical problems.

1. Check the support of Dual SIM with your Xiaomi model

Before you try to turn on the second line, make sure your Xiaomi smartphone supports two at all. SIM-And you can do this in three ways:

• 📱 Official specifications: find your model on Xiaomi's website under "Specifics". SIM, Hybrid Dual SIM or Dual Nano-SIM.
• 🔍 Visual inspection: remove the tray for SIM-Cards – if there are two slots under nano-SIM (or one slot) + inscription SIM2/MicroSD), So there's support.
• 🛠️ Check through Settings: Go to Settings → The phone. → All characteristics. The "Network" block must have a string SIM-map: 2.

Attention to hybrid slots! if your Xiaomi is equipped with a hybrid slot (e.g. Redmi 12 or Poco) X5), You can’t use the second one at the same time. SIM-You have to choose one, and in this case, the second one is usually the first. SIM-The card, as MicroSD can be replaced by cloud storage.

A critical feature for owners of Xiaomi with HyperOS: in the new firmware menu settings Dual SIM moved to the Mobile Network section → Management SIM-by maps, whereas in MIUI 14 it was in Settings. → SIM-maps and mobile networks, which often confuses users who update software.

2.Insert second SIM-maps: step-by-step instructions

If your Xiaomi supports Dual SIM, Follow this instruction to physically install the second card:

1. Turn off the phone (required!) This will prevent damage to the slot contacts.
2. Find a tray for SIM-cards -- usually on the top or side of the device. Use a paper clip or a special key from the kit to extract the tray.
3. Put the second nano-SIM in the slot SIM2 (If the slot is hybrid, make sure you don't confuse it with a microSD connector!
4. Carefully insert the tray back before the click. Don't put too much effort into it - it can bend the contacts.
5. Turn on the phone and wait for the initialization of the card (can take up to 2 minutes).

⚠️ Note: If after inserting the second SIM-The first card is not visible, so check if both cards are correctly installed. SIM1 and SIM2, Especially in models with an asymmetrical tray (for example, Xiaomi) 12T).

Turn off the phone.|Check the type SIM-maps (nano-SIM)|Use the original paper clip|Make sure you support Dual SIM|Do not touch the card contacts-->

If your Xiaomi supports eSIM (e.g. Xiaomi) 13T Pro or Xiaomi Mix Fold 3, the activation process of the second line will be different:

• 📶 Go to Settings. → Mobile network → Add a mobile fare.
• 🔄 Choose Use eSIM and scan it. QR-Operator code (or manually enter data).
• 🔒 Confirm activation – the phone will restart, after which the eSIM will be ready to use.

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If the carrier does not provide eSIM, but your Xiaomi supports it, you can convert the physical SIM-card in eSIM via the operator application (for example, "My Tele2" or "MTS Personal Account").

3. Activation of the second line in the settings of Xiaomi

After the physical installation SIM-You need to activate the card in the software menu:

For MIUI 14 and older:

1. Open the Settings. → SIM-maps and mobile networks.
2. Stick on the inactive. SIM-map (it will be marked as SIM2 Or offline).
3. Switch the switch to the on position.
4. Select the type of network (4G/3G/2G) priority (more on this in the next section).

For HyperOS (2026):

1. Go to Settings → Mobile Network → SIM-card management.
2. Click on the gear icon next to SIM2.
3. Activate the option Enable SIM-map.
4. Set up network settings and identification (line name, indicator color).

⚠️ Note: Some Xiaomi models (e.g. Redmi) 10C) after activation of the second SIM-The main line of the mobile Internet may be lost. APN-Solution: Go to Settings. → Mobile network → Access points (APN) Choose the correct profile for each operator.

4. Network priority setting and switching between SIM-map

Once the second line is activated, it is important to properly configure the network priority and switching conditions, which will allow, for example, to use one of the two lines. SIM-a call card and another for mobile internet.

For this:

1. Go to Settings. → SIM-Maps and mobile networks (or Management) SIM-mapping).
2. Select Priority SIM-call cards and specify which line to use by default.
3. In the Mobile Data section, select SIM-Internet card (you can set automatic switching when you lose your network).
4. Activate the option to Allow data switching if you want your phone to automatically connect to the Internet via the second one. SIM-card without a network on the main.

Example of optimal setting:

• 📞 Calls: Main Calls SIM-card (for example, with unlimited minutes).
• 🌐 Mobile Internet: The Second SIM-Card (with a favorable tariff for traffic).
• 🔄 Auto-switching: enabled (to avoid being left without communication).

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HyperOS has a function “Smart data switching”, which analyzes the quality of the network and automatically selects the best SIM-Internet map. This option is available in Settings → Mobile network → Smart switching.

5. Solving Typical Second Line Problems on Xiaomi

Even after setting it up properly, users often face problems, and let's look at the most common ones and how to solve them:

Problem 1: Second problem SIM-map doesn't catch the net

Possible causes and solutions:

• 📶 No operator coverage: check the coverage area on the operator’s website or try inserting SIM-card.
• ⚙️ Wrong settings APN: Go to Settings. → Mobile network → Access points (APN) Choose your operator profile.
• 🔄 Conflict with the first SIM-map: disable the main SIM-30 seconds card, then turn it back on.
• 📱 Software Failure: Reset Network Settings in Settings → System system → Resetting settings → Resetting mobile network settings.

Problem 2: Mobile Internet disappears when activated SIM-map

This is a typical problem for Xiaomi with hybrid slots.

• 🔧 Manually ask. APN each SIM-maps (settings can be taken on the operator's website).
• 📵 Turn off AutoSwitching if it interferes with a stable connection.
• 🔄 Restart your phone in Safe Mode (hold the power button) → "Safe mode") to check if any application interferes with.

Problem 3: You can’t use two at the same time. SIM-memory-card

If your Xiaomi has a hybrid slot, you have to choose between the second one. SIM-card or microSD. Alternatives:

• 🖥️ Use cloud storage (Mi Cloud, Google Drive) instead of a physical memory card.
• 📱 Transfer applications to internal memory (in Settings) → Annexes → Select an application → Warehouse → Change).
• 🔄 Buy it. OTG-adapter for connecting the flash drive if necessary.

⚠️ Note: Some Xiaomi models (e.g. Redmi Note 11) may be tied to the HyperOS after upgrading to the new HyperOS. SIM-Check that the contacts are not saved on the map, but in the Google or Mi Account account, otherwise they may disappear when you change the line.

6. Features of Dual configuration SIM on popular Xiaomi models

Different Xiaomi models have unique nuances of working with two SIM-Let's look at the most popular maps:

Xiaomi 13/14 Series

The flagship models support Dual. SIM + eSIM and 5G On both lines, features:

• 🌐 It can be used simultaneously 5G one-on-one SIM-map 4G elsewhere.
• 📡 Support for VoLTE and ViLTE (video calls) on both lines.
• ⚡ Dual function 5G allows both SIM-map 5G At the same time (includes in the settings) → Mobile network → Dual mode 5G).

Redmi Note 12/13 Series

Budget models with a hybrid slot.

• 📵 5G supported only by SIM1 (The second card is working in 4G).
• 🔄 When switching between SIM-The network may disappear for 5-10 seconds.
• 📶 For stable operation, it is recommended to disable Auto-Switching of Data.

Poco F5/F5 Pro

Smartphones with improved Dual support SIM:

• 🎮 Options for Dual Game Mode SIM Blocks notifications from the second line during the game.
• 📡 Support 4×4 MIMO principal SIM-Map for a more stable Internet.
• ⚡ Quickly switch between lines via notification panel (swipe down) → icon SIM-map).

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On models with HyperOS (for example, Xiaomi 14) appeared the function "Separation of notifications by the SIM-"Maps" -- you can adjust different sounds and vibrations to call each line. → Sounds and vibrations → Notifications SIM-map.

7. How to disable the second line on Xiaomi (temporarily or permanently)

If you don't need the second one anymore SIM-This is a map that you can disable or completely remove from the system:

Temporary shutdown

1. Go to Settings. → SIM-Maps and mobile networks (or Management) SIM-mapping).
2. Choose the second. SIM-map and switch the switch to the position Otklaz..
3. Confirm the action – the phone will stop using this line, but the data about it will be stored.

Complete removal (for eSIM)

1. Open the Settings. → Mobile network → Mobile fares.
2. Slip on the eSIM you want to remove.
3. Select Remove Mobile Tariff and confirm.

Physical extraction SIM-map

1. Turn off the phone.
2. Remove the tray for SIM-maps and delete the second card.
3. If the slot is hybrid, you can insert a memory card instead of the second one. SIM-map.

⚠️ Note: Some Xiaomi models (e.g. Mi 11 Lite) after removing the second one SIM-The order of the lines may be lost to return the main SIM-map to first place, go to Settings → SIM-maps and mobile networks → Priority SIM-Select the card and choose the right one as the main one.

FAQ: Frequent questions about second line on Xiaomi