How to insert a memory card into the smartphone Xiaomi Redmi: instructions with photos and nuances

Lack of memory on a smartphone is a problem faced by every second Xiaomi Redmi user. High-resolution photos, heavy messengers, games and app cache quickly fill the built-in drive, forcing you to look for ways to expand. The microSD card is the most affordable solution, but its installation has nuances: from choosing the right format to physically placing in the slot. In this article, we will analyze the entire process from A to Z – taking into account the features of different Redmi models, typical errors and ways to avoid them.

Many users are afraid of damaging their smartphone when they first install the card or don't know how to format it for maximum compatibility. Others are faced with the fact that the phone simply does not see the new drive. 10/11/12, Redmi 9/10/13C And other popular models to build a universal algorithm, and we'll also show you how to migrate applications to the general algorithm. SD-card (if supported by your firmware) and what to do if the card slot is combined with the SIM.

Note: if your Redmi is released before 2018 (e.g. Redmi) 4X or Redmi Note 5), check the support for microSD in the characteristics of the model – some budget versions had hybrid slots, where you had to choose between the second one. SIM-memory-card.

1. Which memory card to choose for Xiaomi Redmi: formats and speed classes

Not every microSD is right for your smartphone, but the basic criteria are:

  • πŸ“± MicroSD format only (not to be confused with miniSD or microSD) SD). Modern Redmi supports microSDXC (up to 2 TB), but the best option is microSDHC (32-128 GB).
  • ⚑ Speed class: for recording video in 4K need UHS-I U3 or V30, Class 10 is enough for normal tasks. Cards below Class 4 can slow down your phone.
  • πŸ” Brand: Avoid no-name cards - they're often forged. Reliable manufacturers: SanDisk, Samsung EVO, Kingston Canvas, Lexar.
  • πŸ›‘οΈ Protection: for active use (hiking, sports) choose cards with markings IPX7 (water resistance) or temperature range -25°…+85Β°.

Important: Xiaomi Redmi Note 11 Pro+ and newer officially support cards up to 1 TB, but in practice, drives up to 512 GB are more stable. 1 TB cards may not be determined due to the limitations of MIUI firmware.

Model RedmiMax, the volume of microSDSlot typeApp2SD Support Support Support
Redmi 10/10A/10C512GBHybrid (SIM2 + microSD)Partial
Redmi Note 11/11S1 TBSeparate slotComplete.
Redmi 12/12C1 TBSeparate slotComplete.
Redmi Note 9 Pro512GBHybridPartial

If you plan to record a video in 4K@60fps or use the card as the main storage for applications, take models with labeling A2 (Optimized for random read/write operations, enough for photos and music A1.

πŸ“Š How much memory card do you use in your smartphone?
Up to 32GB.
64–128 GB
256–512 GB
1 TB and more
I don't use it.

2. Where is the slot for the memory card: location of different models

In Xiaomi Redmi, the microSD slot can be:

  • πŸ“± Left on the side face (most models: Redmi Note) 10/11/12, Redmi 9/10/11).
  • πŸ“± From above (rarely, for example, Redmi) 8A).
  • πŸ“± Under the battery (obsolete models until 2019, for example, Redmi 5).

To find the slot:

  1. Take your smartphone in your hand and inspect the side faces – look for a small hole with a metal rim (this is a socket for the tray extraction tool).
  2. If there is no hole, check the top edge next to the power button.
  3. On older models (Redmi 4/4X), the slot can be under the back cover - it must be carefully tampered with a mediator (not a knife!).

Note: if you have a Redmi with a hybrid slot (e.g. Redmi) 9C), When installing a microSD, you will need to remove the second one. SIM-Check this in advance in the characteristics of the model on the official website of Xiaomi.

How to open a tray without a paper clip?
If you don’t have a tool to remove the tray, use: – Unbended paper clip (diameter ~0.7 mm). – Needle with an eye (carefully so as not to break). – Toothpick sharpened under a cone. Do not use a knife or scissors – they are too thick and can damage the mechanism.

3. Step-by-step instructions: how to insert a memory card in Xiaomi Redmi

Prepare:

  • πŸ“± Xiaomi Redmi Smartphone (not necessarily switched off, but recommended for safety).
  • πŸ’Ύ MicroSD card (check that it does not have important data – the first time you connect the phone may suggest formatting it).
  • πŸ”§ Tray extraction tool (goes complete with phone or replace with paper clip).

Installation algorithm:

Turn off the phone (optional but recommended)|Find the slot and remove the tray with a paper clip |Put the microSD in the tray (contacts down)|Get the tray back in carefully before clicking |Put the phone on and wait for the card to be identified-->

  1. Remove the tray. Put the paper clip in the hole next to the slot and press before you click. The tray will extend 1-2 mm β€” pull it with your fingers.
  2. Put the card in the tray. Pay attention to the position of the contacts: πŸ”Œ The contact cards (gold stripes) should be turned down to the bottom of the tray. πŸ”„ The tray usually has a diagram indicating the correct orientation.

⚠️ Attention: if you confuse the side, the card will not be inserted to the end or damage the contacts of the slot!

Put the tray back in. Press it before the characteristic click. Make sure the tray sits flat -- if it protrudes, pull it out and try again.

Turn on the phone. When you download it, you'll see a notification, "New." SD-If there is no notification, check the card:

  • πŸ” Correct installation of the card (remove and insert again).
  • πŸ› οΈ Card compatibility (some Redmis do not support exFAT - formatting is required in the card) FAT32).

If the phone doesn’t see the card, go to Settings. β†’ Memory. β†’ SD-map and select Format as internal (Warning: This will remove all data from the card!).

πŸ’‘

Before formatting the card as internal memory, back up the data on your PC, and after this operation, the card cannot be read on other devices without re-formatting.

4. How to set up a memory card after installation

After the first connection, MIUI will offer to select the mode of use of the card:

  • πŸ“ Portable storage: the card works like a flash drive – files can be transferred manually, but applications are not installed on it.
  • πŸ“± Internal memory: the card becomes part of the system (expands the built-in drive) in this mode, it cannot be retrieved without risking data corruption!

Adjustment recommendations:

  1. For photos, music and documents, choose Portable Storage, so you can retrieve the map and use it in other devices.
  2. For applications (if supported), choose Internal Memory, but consider: ⚠️ The speed of applications with microSD will be lower than with built-in memory. ⚠️ Not all applications can be moved (depending on the developer).

change the default location

Settings β†’ Memory. β†’ SD-map β†’ Settings β†’ Default location

To transfer files to the map:

  1. Open Files (standard MIUI application).

πŸ’‘

If you've chosen Internal Memory mode, back up your data regularly. When you reset your phone to factory settings, the map will be formatted!

5. Typical errors and their solutions

Redmi memory card problems are more common than you think.

Problem.Possible causeDecision
Phone doesn't see the mapIncorrect installation, incompatible format (exFAT), damaged contactsReinstall the map, format in FAT32 on PC, wipe the contacts with alcohol
The card is defined as damaged.File system is broken, physical wear and tearFormat the map (the data will be deleted!) or replace it with a new one.
Low recording speedClass 4/6 map, data fragmentationUse UHS-I U3 cards or format the card
Applications are not portable to SDThe card is formatted as portable or the application does not support portabilityFormat as internal memory or check your app settings

What if the card is no longer defined after the MIUI update?

Sometimes, after major updates (e.g., from MIUI 12 to MIUI 13), the system resets the card settings.

  1. Reboot the phone.
  2. Remove and re-paste the card.
  3. Format the card via PC in FAT32 (unless it is used as internal memory).
  4. Reset your phone settings (last option if nothing helps).

Instructions for the perenos:

  1. Go to Settings β†’ Applications β†’ Application Management.
  2. Select the desired application β†’ Warehouse.
  3. Click Change and select SD-map.
  4. Confirm the transfer and wait until it is completed (may take a few minutes).

Limitations:

  • 🚫 Not all applications can be moved (depending on the developer).
  • ⚠️ Ported application widgets may not work.
  • ⏳ Launching applications with SD-The cards are slower.

To speed up the work of ported applications, use cards marked A2 (optimized for random access).

7 How to safely remove the memory card from Xiaomi Redmi

Failure to remove the card by the rules can lead to data loss or damage to the file system.

Close all applications that use the map|Go to "Settings" β†’ Memory. β†’ SD-map"|Press "Extract" (or "Open")|Wait for the notification "Safe to remove"|Remove the tray with a paper clip-->

If the card is used as an internal memory, it can't be extracted without formatting.

  1. First, transfer all data from the card to the built-in drive.
  2. Go to Settings. β†’ Memory. β†’ SD-map β†’ Settings β†’ Formatting as a portable.
  3. After formatting, remove the map.

⚠️ Note: if you remove a card formatted as internal memory without first turning off the settings, the next time you connect, the phone may require you to format it (the data will be lost!).

8.Memory card alternatives for Xiaomi Redmi

If your Redmi model doesn’t support microSD or your slot is second to yours SIM-map, consider alternatives:

  • ☁️ Cloud storage: Mi Cloud (15GB free for Xiaomi users); Google Drive (15GB) or Yandex Drive (10GB). Mega (20GB free). Minus: requires stable internet to access files.
  • πŸ’» USB-OTG drives: plug-in flash drives USB-C Or Micro-USB (depending on the Redmi model) faster than microSD, but less convenient for permanent use.
  • πŸ“‘ FTP-server: you can configure access to your phone files via a local network (applications like Solid Explorer or FX File Explorer).
  • πŸ”„ Regular cleaning: use the built-in cleaning utility in MIUI (Settings β†’ Memory. β†’ Cleaning) to remove cache and unnecessary files.

For photographers: if you need to make room for new pictures, move RAW-files on a PC or external drive immediately after shooting. Google Photos in High Quality mode allows you to store compressed copies of photos for free (without limiting the volume of the photo).

πŸ’‘

Cloud services are convenient for backup, but for permanent use (for example, offline music), a memory card remains the optimal solution.

FAQ: Frequent questions about memory cards in Xiaomi Redmi

Can I use a camera memory card in Redmi?
Yes, if it's a microSD (not an SD or a miniSD), but note: Camera cards are often formatted in exFAT, which not all Redmi supports out of the box. You'll have to reformat it to FAT32. The speed cards for cameras (like UHS-II) in a smartphone will run at UHS-I speeds - there's no point in overpaying for them.
Why did the phone stop after installing the card?
Probable reasons: Low-end card (Class 4/6) β€” replace it with UHS-I U1 or higher, the card is formatted as internal memory, and system applications are ported to it. Try to return it to internal memory. Data fragmentation β€” format the card (by pre-copying files). Also check if the phone warms up β€” some cheap cards overheat when you write intensively.
How to check the speed of a memory card on Redmi?
Install the app A1 SD Bench or AndroBench from Google Play. Run a read/write test: πŸ“Š Norm for Class 10: Reading ~80-90 MB/s, recording ~20-30 MB/s. πŸ“Š For UHS-I U3: reading ~90-100 MB/s, recording ~50–80 MB/s If the speed is lower than the stated speed, the card may be fake or worn out.
Can I use a memory card like a RAM in Redmi?
No, in MIUI There's no Swap, unlike some custom firmware, and the only way to speed things up is to free up the internal memory by transferring the media to the storage. SD-To increase productivity, it is better: Close unused applications. Disable animation in the developer settings (Settings) β†’ The phone. β†’ Version. MIUI β€” Press 7 times, then additionally β†’ For developers β†’ Use the "Lite" versions of applications (e.g. Facebook Lite).
What to do if the memory card slot is broken?
If the phone does not see the card, and visually the slot contacts are damaged (bent, oxidized), options: Clean contacts: gently wipe with alcohol or eraser (no pressing!). Service center: replacing the slot will cost 1-3 thousand rubles (depending on the model). Alternatives: use a USB-OTG drive or cloud services. Do not try to repair the slot yourself - it requires soldering equipment and experience.