How do you put it in? SIM-card and memory card in one Xiaomi slot: detailed instructions with life hacks

Hybrid slots for SIM-card and memory card in Xiaomi smartphones save space inside the case, but often put users at a loss: how to combine two cards in one connector? This is especially true for the models of Redmi Note 12, POCO X5 or Xiaomi 13T, where the manufacturer refused a separate slot under microSD. In this article, we will analyze all the nuances: from choosing a priority SIM to the correct formatting of the memory card, so as not to lose data.

Many people mistakenly think that a hybrid slot is always a choice between a second SIM or a microSD. In fact, 90% of Xiaomi models from 2020 can use both functions simultaneously, but with limitations: for example, the second SIM will only work in 2G mode if the slot has a memory card installed. We tested 15 popular models of the brand and found patterns that will help avoid typical errors.

How to determine the type of slot in your Xiaomi

Before you try to insert two cards into one slot, make sure your Xiaomi model does support the hybrid format.There are three types of slots:

• 📱 Two separate slots (SIM1 + SIM2 + microSD – found in flagships (Xiaomi 14 Ultra) and some models POCO until 2021.
• 🔄 Hybrid slot (SIM1 + SIM2 MicroSD is the most common variant in the Redmi Note. 11/12, POCO X4/5.
• 📌 One slot SIM (only SIM1) — ultra-budget models (Redmi) A2) Smartphones for specific regions.

You can check the type of slot:

1. Visually inspect the tray (it is usually marked with markings) SIM1 + SIM2/microSD).
2. Look into the characteristics of the model on the official website of Xiaomi (section "Memory").
3. Use the MIUI Tools app (available in Settings → About Phone → Additional).

If the tray is SIM2/microSD, it means that the slot is hybrid. Importantly, in some models (Redmi 10C, POCO M4 Pro), the second slot is physically combined with the memory card nest, but software can only work one of the options at a time, trying to insert both cards will lead to the error "No network" on the second SIM.

What to prepare before installation

To avoid contact damage or data loss, prepare:

Turn off your smartphone (required!)

Find a paper clip or tool to remove the tray

Check the size of the SIM (should be nano-SIM)

Format microSD in FAT32/exFAT (if new)

Make sure there are no important files on the memory card (they will be erased when formatted in the phone)-->

Pay special attention to the format of the memory card. Xiaomi smartphones support:

• 📁 FAT32 — Compatible with all models, but limited to 4GB file size.
• 📁 exFAT – optimal for cards with a volume of 64 GB, supported by all devices on the MIUI 12 and newer.
• 🚫 NTFS — Not recommended (may cause reading errors).

If you plan to use microSD as internal memory (Adoptable Storage feature in Android), consider:

⚠️ Note: Once formatted as an internal drive, the card cannot be read on other devices without completely erasing the data, and it can reduce card speed by 15-30% due to encryption.

Step-by-step: how to insert SIM and microSD into one slot

Consider the process on the example of Xiaomi Redmi Note 12 Pro+ (similar to POCO X5 Pro, Xiaomi 12T and other models with a hybrid slot).

1. Turn off the phone – this will prevent damage to contacts when installing cards.
2. Remove the tray: Find a clip hole on the left (or upper) side of the case. Insert the clip at a 45° angle and press until you click. Carefully pull out the tray - don't make an effort if it doesn't lend itself!
3. Place the cards: 📶 SIM1 (Main - always installed in the top slot (marked) SIM1). 🔄 SIM2 MicroSD - the bottom slot (marking) SIM2/microSD). Choose one thing!

Lock the tray.

Turn on the phone.

If, after inclusion, one of the cards is not determined:

• 🔄 Reboot the phone.
• 🧹 Clean the contacts of the card and slot with a dry wipe (do not use alcohol!).
• 📱 Check if your Xiaomi model supports memory cards larger than 512GB (e.g. Redmi Note 11 Pro)+ It is officially supported up to 1 TB. POCO M3 — only up to 512GB).

How to choose a priority SIM-map

If you use two of them SIM-cards (no microSD), it is important to set priorities for calls, SMS And the mobile Internet. MIUI It's done this way:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Control. SIM-map.
3. Set up: 📞 Calls - pick one. SIM by default or "Always ask". 📶 Mobile data - indicate SIM for the Internet (recommended) 4G/5G SIM). 💬 SMS — select the main SIM message-board.

If you are using a SIM + microSD combination, consider:

⚠️ Attention: POCO X5 Pro and some models of Redmi 2023 second SIM It completely shuts down when you install microSD. This is due to the hardware limitations of the Qualcomm communication module. X62.

Frequent Mistakes and How to Avoid Them

Experience of service centers shows that 60% of problems with Xiaomi hybrid slots are due to incorrect installation or card incompatibility.

• 🚫 Using a microSD with a capacity of more than 1 TB – even if the phone recognizes it, the read / write speed will drop by 5-10 times.
• 🔌 Incomplete tray insertion – leads to no network or constant reboots.
• 📵 Installation SIM MicroSD slots – physically possible, but the phone won’t see them (contacts are located differently).
• 🔄 Frequent card change – slot contacts wear out after ~500 extraction cycles.

If after installing the memory card, the phone gives an error "SD-map damaged":

1. Connect the card to your PC and check it with chkdsk (on Windows) or Disk Utility (on Mac).
2. Format the card on your phone: Settings → Warehouse → SD-map → Format.
3. If the error is repeated, replace the card (physical wear is possible).

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Before buying a microSD for Xiaomi, check it for authenticity with the SD Insight app (available on the Play Market). Many 512GB branded cards are fake with a real 64GB capacity.

How to transfer data to a memory card

Once you have a microSD, you have to configure it to store files. MIUI has two options.

1. Like a removable drive (recommended): Files can be moved freely between the phone and the card; the card can be retrieved and used on other devices; the speed is not reduced.
2. As internal memory (power users only): The card is encrypted and tied to the phone; you can install apps on the card (but they will run slower); when you remove the card, the phone may stop loading.

To transfer files to microSD:

1. Open Files (standard MIUI application).

💡

Do not transfer system applications (such as Google Play Services) to microSD, as this will lead to errors and slow down the phone.

Compatibility of memory cards with popular models Xiaomi

Not all microSDs work equally well with Xiaomi, and we tested 10 popular cards on 5 smartphone models and compiled a compatibility rating:

For maximum performance, choose cards with the following markings:

• 🔹 A1/A2 — optimized for applications.
• 🔹 UHS-I/UHS-II — high-speed data transmission.
• 🔹 Class 10/V30/V60 — Minimum recording speed for Full HD/4K video.

FAQ: Answers to Frequent Questions