How to install a memory card on a Xiaomi smartphone: from microSD selection to MIUI settings

Why Xiaomi’s memory card isn’t always the obvious solution

Xiaomi smartphones have long gained a reputation for excellent price-performance ratio, but even flagship models do not always boast enough internal memory. A microSD card seems to be an easy way out - bought, pasted, and now there is no limited space for 4K photos, heavy games and offline Spotify playlists. However, in practice, owners of Redmi, POCO or Mi face nuances: from the lack of a card slot in some models to problems with porting applications.

In this article, we will discuss all the stages of working with a memory card on Xiaomi, from choosing the right drive to the intricacies of setting up in the MIUI shell. Particular attention will be paid to models with a hybrid slot (microSD + second SIM), where installing a card blocks the ability to use two SIMs at the same time.

Which memory card to choose for Xiaomi: technical requirements

Not every microSD is good for your Xiaomi. The manufacturer imposes limits on both maximum volume and speed class. For example, budget models like the Redmi 9A support cards up to 512 GB, while the flagships of the Mi 11 series are up to 1 TB. But that’s not all: if you plan to record video in 4K or install games on the map, you will need a speed class at least A2 or UHS-I U3.

Here are the key parameters that should be considered:

• 📏 Form factor: microSD only (in old models, miniSD could occur, but now it is not relevant).
• 💾 Volume: from 16 GB to 1 TB, but optimal 128-256 GB for the balance of price and capacity.
• ⚡ Class speed: C10 / U1 — music and documents; A1 / A2 — application; U3 / V30 — video 4K play.
• 🔄 Brand: Preference SanDisk, Samsung EVO Kingston – they are less counterfeited and more stable MIUI.

⚠️ Note: MicroSDXC cards (over 32 GB) require exFAT formatting or NTFS. If your Xiaomi Released is before 2018, it may not support exFAT – check the model specifications!

Where is the memory card slot in Xiaomi: search and preparation

The slot's location depends on the model. In most modern Xiaomi, it's on the left side of the device (when you look at the screen) and combined with a tray for the device. SIM-Exceptions to some series models POCO, So, to get the tray out, you'll need a paper clip or a special key (complete with your phone).

Step-by-step instructions for removing the tray:

1. Turn off your smartphone (recommended, but not required).
2. Find a small hole next to the tray.
3. Insert the paperclip at a 45° angle and press until clicked.
4. Carefully stretch the tray - do not make excessive efforts!

If the tray is not removed, check:

• 🔍 No visible damage or contamination in the hole.
• 🔄 Did you put the paperclip right (not under 90)°, angled).
• 📱 Does the cover block access to the tray.

⚠️ Note: In hybrid slot models (e.g. Redmi Note 12), the microSD setup automatically disables the second slot. SIM-If you want two SIMs, you have to choose between them and the extra memory.

Installation of a memory card: step-by-step instructions with a photo

When the tray is removed, you have to set the map correctly, and it's important to be guided, so the microSD contacts should be down, and the angle should be bent to match the shape of the slot, and if you mix the sides up, the card won't stick in or damage the contacts.

Procedure:

After installation, the phone must automatically identify a new card.

1. Reset the device.
2. Check if the card is inserted correctly (sometimes it may fall out when inserting the tray).
3. Open Settings → Memory and click "Update".

If the card is still not recognized, try it on another device (for example, on a computer through a card reader), if it does not work there, the card is defective.

💡

Before you first install, format the card on your phone, even if it's new, and this will remove possible hidden partitions from the manufacturer and reduce the risk of errors.

Formatting a memory card in MIUI: external or internal drive?

When Xiaomi discovers a new card, the system will prompt it to format it, and it is important to choose the mode of use:

• External drive – the card will be used as a flash drive (you can easily retrieve and connect to other devices).
• Internal memory – the card will become part of the system (you can transfer applications to it, but the extraction will lead to failures).

The choice depends on your tasks:

How to format your card as an internal memory:

1. When a notification appears, click "Configure".
2. Select "Inner Memory."
3. Confirm the formatting (all data will be deleted!).
4. Wait until it is completed (it can take up to 10 minutes).

⚠️ Note: After formatting as internal memory, the card will not be used in other devices without completely erasing data.

Transferring data and applications to a memory card

If you've chosen Internal Memory mode, you can transfer some of the applications to the map, but MIUI imposes restrictions on:

• 📱 Not all applications support portability (especially system and high-performance applications).
• 🎮 Games can slow down if the card is slow (class below). A2).
• 🔄 After transferring the application icon may disappear from the main screen.

How to transfer applications to the map:

1. Open Settings → Applications → Application Management.
2. Select the appropriate application.
3. Press "Storage" → "Change".
4. Select "Memory Card" and confirm.

To transfer photos, videos and music:

• Use the MIUI File Manager (mov files manually).
• In the camera settings (Settings → Camera → Save), select Memory Card as the default save location.

💡

Moving apps to a memory card doesn’t always make your phone faster, and if your internal memory is less than 80% full, it’s best to leave apps in it because they’ll run faster.

Frequent mistakes and their solution

Even after installing the map correctly, Xiaomi users face problems, and here are the most common ways to fix them:

If the card is unstable (for example, disappears after a reboot), try:

• 🔧 Update MIUI Up to the latest version (card bugs are often patched).
• 📵 Insert the card into another smartphone and check it there.
• 🔄 Reset your phone settings (before doing so, back up your phone!).

FAQ: Answers to Frequent Questions