How to transfer memory to SD-Map in Xiaomi: All ways + step-by-step

Xiaomi’s microSD-enabled smartphones allow for an expansion of internal storage, but many users are facing a challenge: How do you make the system automatically save files to an external drive? By default, MIUI uses internal memory, which quickly overflows it – especially if you’re actively shooting 4K videos, installing heavy games, or downloading movies.

In this article, we will discuss all working methods of transferring data to SD-map in Xiaomi, Redmi and devices POCO — From basic default save settings to forced app portability (including Android restrictions and workarounds).Specially, we will focus on critical errors in formatting the card as internal memory, which can lead to data loss or slow down the phone.

1. Preparation SD-maps: selection and formatting

Before you transfer data, you need to prepare the memory card itself correctly. Not all microSDs work equally well with Xiaomi – especially when it comes to using it as internal storage (Adoptable Storage feature in Android).

Requirements for SD-map:

• 🔹 Speed class: not lower UHS-I (U1) Or Class 10. To record video in 4K or installation of applications is required U3 or A2 (optimally).
• 🔹 Volume: 32 GB (for basic expansion) to 1 TB (maximum for most Xiaomi models).
• 🔹 File system format: exFAT (for cards) >64 GB) or FAT32 (map ≤32GB).
• 🔹 Brand: Preferably SanDisk, Samsung EVO, Kingston Canvas – They are less forged and more stable.

If the card is new, you can format it right on your phone, and if you've already used it, make sure you back up the data, because formatting will delete all the content.

Make sure the card is compatible with your phone (check slot in the model specifications)|

Insert the card into the slot (not into the adapter for the SIM!)|

Open Settings → Memory and wait for map definition |

Format your card via phone (not on PC!) |

2.Save by default setting to SD-map

The easiest way is to tell the system to automatically save new files (photos, videos, downloads) to an external drive, which will not transfer existing data, but will prevent the internal memory from overflowing.

Instructions for MIUI 12-14:

1. Open the Settings → Memory.
2. Tap your name on it. SD-maps, for example, SD-128GB card).
3. Select Settings → Save by default.
4. Activate the switches for: 📷 Camera (photo and video) 🎵 Downloads (files from the browser, messengers) 📥 Other applications (if available)

⚠️ Note: Some apps (such as WhatsApp or Telegram) ignore system settings and store media in internal memory).

SanDisk (Ultra, Extreme, etc.)|

Samsung EVO|

Kingston Canvas|

Another (write in the comments)|

I don't use it. SD-map-->

3. Formatting SD-The card is an internal memory (adoptable storage)

Adoptable Storage allows you to "unite" SD-The card with the phone's internal memory, and then the system will treat it as part of the main drive, and some applications can be transferred to it:

• 🚫 The card cannot be retrieved without data loss (it will be encrypted).
• 🐢 The speed of the system may fall (SD-cards slower than internal memory UFS).
• ⚠️ If the card fails, the phone may stop loading.
• 🔄 Not all applications support portability (especially system applications).

How to activate Adoptable Storage in Xiaomi:

1. Put it in. SD-map and wait for its definition.
2. Go to Settings. → Memory. → [Name of the map] → Settings (⚙️) → Formatting as an internal.
3. Confirm the action (all data on the map will be deleted!).
4. Wait until the process is completed (it can take 5-15 minutes).
5. After formatting, restart the phone.

⚠️ Note: If you are formatting SD-The card is like internal memory, and then you can retrieve it without first unmounting it in the settings, the phone can freeze while you boot it. To safely extract the card, go to Settings. → Memory. → [Name of the map] → Extract and wait for the process to be completed.

4. Manual transfer of files and applications to SD-map

Even if you set up the default save, the old files will remain in internal memory, and you can transfer them manually, either through standard MIUI tools or through third-party applications.

Transfer of files (photos, videos, documents):

1. Open Files (standard Xiaomi app).
2. Go to the Internal Memory section and select a folder (e.g. DCIM for a photo).
3. Click Select, tag files and tap Move.
4. Choose your destination as your destination. SD-map.

Portage of annexes (partial):

Android allows you to transfer only a part of the application (usually cache and some data) to the Internet. SD-A full transfer is only possible if the developer has provided this option.

1. Open Settings → Applications → Application Management.
2. Select an app (like Spotify or Netflix).
3. Slip the vault. → Change. → SD-map.
4. Confirm the transfer (some data will remain in the internal memory).

💡

To port heavy games (such as Genshin Impact or Call of Duty Mobile), use AppMgr III (App 2 SD) to show which files can be transferred and lets you do it in one click.

5. data transfer of specific applications (WhatsApp, Telegram, etc.)

Messengers and social networks often ignore system settings and store media in internal memory. SD-map, additional actions will be required.

For WhatsApp:

1. Open WhatsApp and tap it. ⋮ → Settings → Memory and data.
2. Choose Media Preservation → The phone's memory and change it to SD-map.
3. To transfer files already downloaded: Use Files → Internal memory. → WhatsApp → Media. Select folders (Images, Video, etc.) and move them to SD-Go back to WhatsApp and update your media library (⋮ → Settings → chat → Backup copy).

For Telegram:

1. Open Telegram, go to the ⋮ → Settings → Data and memory.
2. In the Media Warehouse section, select SD-map.
3. To transfer old files, copy the Telegram folder from internal memory to SD-hand-write.

⚠️ Note: If you manually transfer messenger folders, they can create duplicates in internal memory once the app is updated. → Memory. → Analysis.

6 Problems and mistakes in working with SD-map

Even after you set it up properly, users are faced with typical problems, and let's look at the most common ones and how to solve them.

If SD-The card suddenly stopped working, try the following steps:

1. Reboot the phone.
2. Remove and re-insert the map.
3. Check the card on your PC through the card reader (it may be damaged).
4. Format the card on your phone (the data will be deleted!).

For owners of devices without a microSD slot (such as the Xiaomi 12S Ultra), the only way out is through cloud services or external drives, and in some cases, replacing internal memory (requiring disassembly of the phone and repair skills) helps.

8. Frequently Asked Questions (FAQ)