How to put a memory card in the phone Xiaomi Redmi 4: instructions with photos and tips

Xiaomi Redmi 4 is one of the most popular budget smartphones of the brand, which is still actively used for its reliability and functionality. However, the 16 or 32 GB of internal memory that was equipped with basic versions of the device is often not enough for modern needs: high-resolution photos, videos, games and applications quickly fill the free space. The solution is simple – installing a microSD card, but here owners are waiting for nuances: from choosing a compatible media to correctly placing in a hybrid slot.

In this article, we’ll take a look at the whole process from A to Z: how to pick up a card to make it work smoothly, where the slot in Redmi 4 is (and why it’s easy to skip), how to avoid installing errors, and what to do if the phone doesn’t see a new drive. We'll focus on the hybrid slot, which is a key feature of the model that is often confusing. SIM-If you are afraid of damaging your phone, don’t worry: our step-by-step photos and video tips will help you do everything carefully.

1. Which memory card to choose for Xiaomi Redmi 4

Not every microSD is suitable for Redmi 4. The manufacturer claims support for cards up to 256 GB, but in practice with media larger than 128 GB, there can be problems - especially if they are from little-known brands. The optimal choice is: Class 10 cards (UHS-I) or A1/A2 cards from trusted manufacturers - SanDisk, Samsung EVO, Kingston Canvas. They guarantee stable write and read speeds, which is critical for recording video in 4K or running applications from a card.

It is also important to consider the file system:

Maps up to 32GB are formatted in FAT32 (suitable for photos and music, but not for >4GB files).

Cards from 64 GB and up use exFAT (optimum for video and gaming).

Xiaomi Redmi 4

exFAT

• 🔹 Volume: 32–128 GB (optimum 64 GB for price/capacity balance).
• 🔹 Class speed: UHS-I (U1 or U3) video recording HD.
• 🔹 Avoid no-name cards – they are often forged and have a low speed.
• 🔹 Warranty: Buy from official dealers (the box must have a certificate of authenticity).

⚠️ Note: MicroSDXC cards (64GB) may not be recognized if the phone runs on outdated firmware MIUI 8 or lower. Update the software to MIUI 10+ pre-purchase.

2.Where is the memory card slot in Redmi 4

The Xiaomi Redmi 4 (all versions: Redmi 4 Pro, Redmi 4 Prime, Redmi 4A) uses a hybrid slot - this means that you can install either two nano-SIMs or one SIM + microSD. The slot is located on the left end of the phone (if you look at the screen) and closed with a small lid with a hole for extraction.

To open the tray, you'll need a paper clip or a special key (complete with your phone) insert it into the hole before you click, the tray will extend a few millimeters, then you can pull it out with your fingers. Do not use sharp objects (needles, knives) so as not to damage the locking mechanism!

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If you travel frequently and use two SIM-Cards, Consider Buying Redmi 4A — It has a separate microSD slot, which allows you not to sacrifice the second one. SIM.

3. Step-by-step instruction: how to insert a memory card

Turn off the phone before installing it, which will prevent damage to the slot contacts.

1. Remove the tray: Insert the paperclip into the hole on the left end before clicking, pull the tray over yourself.
2. Place it. SIM-Card: If you use one SIM, Put it in the slot SIM1 (supports 4G). For two. SIM — into SIM1 and SIM2.
3. Install microSD: The memory card is placed in the SIM2 slot with up marks (contacts must be facing the back of the phone).
4. Put the tray back in: Squeeze it carefully until you click. Don't put too much effort into it!

When you turn on your phone, you will notice a new memory card. Go to Settings → Memory to format it (if required) or configure it as internal (for installing apps) or portable (for storing files).

⚠️ Note: If you choose formatting as internal memory, the card will be encrypted and not readable on other devices.This mode is only suitable for permanent use in Redmi 4.

4 Why the phone can't see the memory card: common mistakes

If the microSD is not detected after installation, check the following points:

• 🔌 Installation incorrect: The card is not fully inserted or the contacts are contaminated. Remove it and wipe it with a soft cloth.
• 🔄 Incompatible File System: Maps >32GB should be formatted in exFAT. do it via PC if the phone doesn't offer formatting.
• 📱 Outdated firmware: On MIUI 8 and below may not be recognized cards >64 GB. Update the software in Settings → The phone. → Updating the system.
• 🚫 Damaged card: Try inserting it into another phone or PC. If it doesn't read, replace it.

If the problem persists, try resetting your phone (pre-saving data!). Go to Settings → Additional → Recovery and Reset. 80% of the time, this helps with software failures.

5. How to transfer data and applications to a memory card

By default, applications are installed in internal memory, but some of them can be transferred to microSD.

1. Open the Settings → Applications.
2. Select the app you want (such as WhatsApp or Google Maps).
3. Click Warehouse → Change → Memory Map.

Not all applications support portability, depending on the developer, and note that system applications (such as Mi Browser or Security) cannot be ported.

To automatically save photos and videos to the map:

1. Open the Camera app.
2. Press on. ⚙️ Settings → Preservation site → Memory map.

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Moving apps to a map can slow them down, especially if the microSD has a low write speed (class below 10).

6 How to safely remove the memory card

Never pull out a microSD while writing files or running applications - this can cause data loss or card corruption.

1. Open the Settings → Memory.
2. Click on the memory card icon (usually signed as SD-map).
3. Choose Extract or Safe Extract.
4. Wait for the Safely Removed Notice.
5. Turn off the phone and remove the tray.

If you often use the card to transfer files between devices, format it as a portable one – this will speed up the extraction process.

7.Alternative ways to expand memory

If the Redmi 4 hybrid slot doesn’t suit you (like you need two SIMs and a microSD at the same time), consider the following options:

• 📱 OTG-flash drive: Connects through USB Type-C (requires an adapter) Allows you to use the flash drive as a removable drive without giving a donation. SIM-card.
• ☁️ Cloud storage: Mi Cloud, Google Drive or Yandex Disk give 5-15 GB for free.
• 🔄 Transfer data to PC: Regularly copy files to your computer via cable or Wi-Fi (e.g., using Mi Drop).

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For OTG-Select the models from the flash drives USB 3.0 – They work 10 times faster than USB 2.0, which is critical for transferring large files.

FAQ: Frequent questions about memory cards in Xiaomi Redmi 4