Xiaomi Redmi 4X is one of the most reliable budget devices released by the company. However, built-in storage of 16 or 32 GB in modern conditions is often not enough to install a large number of applications, music and high-quality photos. Expanding internal volume with an external drive is a standard and necessary procedure for comfortable use of the device.
In this article, we will discuss how to choose, insert and configure a memory card in your phone, you will learn about the nuances of format compatibility, the formatting procedure through an engineering menu or standard settings, and how to transfer data to a new medium without losing information. Proper preparation of tools and adherence to the sequence of actions will help avoid damage to the tray contact group.
Before you start physically removing the tray, you need to make sure that you have purchased a compatible drive.Modern Xiaomi smartphones support microSD cards, but have restrictions on maximum volume and speed class. Using low-quality or too large cards can lead to unstable system operation or device failure to identify the media.
Choosing the right storage device for Redmi 4X
The first step is to purchase the right memory module. For the Redmi 4X model, microSDHC and microSDXC cards are relevant. Officially, the manufacturer claims support for drives up to 128 GB, but in practice the device often works successfully with 256 GB cards, if they have the right file system.
The critical parameter is the recording speed class. For comfortable interface and video recording, it is recommended to choose Class 10, UHS-I or A1 cards. Slow drives can cause "freezes" in the menu, long loads of the gallery and errors when installing applications.
- 📀 Form factor: exclusively microSD (TF), standard SD Not physically fitting.
- 🚀 Speed: Minimum speed class 10 (C10) stable operation of multimedia.
- 💾 Brand: it is recommended to purchase products of well-known brands (SanDisk, Samsung, Kingston) in order to avoid counterfeiting.
When buying, pay attention to the packaging and availability of holograms of protection. The market is oversaturated with counterfeit products that are labeled as 64 GB, but physically have a volume of 4 GB. You can check the real volume using specialized utilities on PCs, such as H2testw, before installing in the phone.
Preparation of the device and removal of the tray
The installation process begins with the preparation of the workplace.Make sure the surface you put your smartphone on is clean, dry and well lit. - Xiaomi Redmi 4X a combined tray, which means that two can be installed SIM-card SIM one memory card.
⚠️ Warning: Before removing the tray, it is strongly recommended to turn the device off completely.Although many modern phones support hot replacement, in budget models this can lead to software failure of the file system or data corruption.
To extract the tray, a special metal clip that comes with the kit, or a thin needle, is used. Find a round hole on the lower or lateral end of the case (depending on the regional version, in the 4X it is usually the lower end next to the charging port).
☑️ Pre-installing check
After removing the tray, carefully examine it. It has a specific shape with cutouts for contacts. It is important not to confuse the sides, as forced insertion can break plastic guides. The tray in Redmi 4X is double-sided or has special seats for different configurations.
Correct installation of the card in the slot
Installing the drive requires care.In a combined Redmi slot 4X The memory card is usually located on the inside of the tray or in a separate recess, depending on the version of the board. SIM-map or a special compartment near it.
Orient the map so that the golden contacts are pointing downwards to the contacts of the phone. The bevelled corner of the card must coincide with the bevelled angle of the seat on the tray. The map must lie flat, without protruding beyond the edges of the plastic frame, otherwise the tray will not enter the body until the end.
| Tray element | Position of installation | Orientation of contacts | Fixation |
|---|---|---|---|
| SIM 1 | The main slot | Down. | On the contour |
| SIM 2 | Secondary slot | Down. | On the contour |
| microSD | Above the SIM or separately | Down (to the pay) | In the grooves of the tray |
| Tray | Lower end | Up/down bevel | Before you click. |
Put the tray into the body smoothly, without undue effort. If you feel a strong accent, stop and check the orientation of the tray. The properly installed element enters the body smoothly and is flush with the phone frame.
What if the tray doesn't fit?
Primary formatting of the drive
After turning on the smartphone, the system will automatically detect a new drive. SD-But to work with it, you need to do a formatting procedure, and that will create the file system you need that you can understand with Android.
Go to the settings menu, select Advanced Settings (or Additional), then Memory. In the storage list, you will see your card. Click on it and select Format. The system will warn that all data will be deleted — confirm the action.
- 🗑️ Cleanup: Formatting completely erases all data, so back up in advance.
- 📂 File system: Android usually formats into FAT32 or exFAT for compatibility.
- ⚙️ Internal Memory: In Some Versions MIUI You can choose to use the card as part of internal memory.
The process can take anywhere from a few seconds to a couple of minutes depending on the volume. Do not interrupt the power of the phone during formatting. Once complete, the system will notify you of the successful installation and readiness for operation.
⚠️ Note: If the card is defined as “damaged” or “empty” after formatting, try formatting it on your computer to the file system. FAT32 (for cards up to 32 GB or exFAT (64 GB and higher).
Setup of recording and data transfer
By default, the camera and some applications can continue to store data in internal memory. To change this, go to the camera settings and select Save to -> SD-This will free up precious storage space for system files.
To transfer existing files, use the built-in MIUI file manager. Open Explorer, go to internal memory, select the desired folders (e.g. DCIM, Download, Music) and select Move. Then go to the memory card and select Insert.
💡
Use the Cleanup feature in the Security app to find large files that can be safely moved to an external medium, freeing up space for the system to work.
Some apps allow you to specify the path to your data libraries in your internal settings, go to the settings of a particular application (for example, a navigator or a music player) and specify the path to the folder on an external map, which is especially true for offline maps and game cache.
Using the card as internal memory
Owners of the 16GB version often use the "Adoptable Storage" feature, which encrypts the card and makes it an integral part of the system. SD-map.
To activate this function, select Use as internal storage from the memory management menu, and the system will format the card again into a proprietary format, and then when you install new applications, the system will prompt you to select the installation location.
However, this method has a significant disadvantage: the card can be slower than the built-in flash memory, which will slow down the launch of applications, and it will be impossible to extract such a card without losing data and resetting applications without complex manipulations.
💡
Transformation SD-Internal memory cards are an effective way to make versions 16 GB, but requires the use of fast class cards only A1/A2 avoiding the interface braking.
Frequent problems and ways to solve them
Sometimes users are faced with a situation where the phone stops seeing the card or gives out reading errors, most often due to contact oxidation or software failure.
If the reboot didn't work, remove the map and wipe the contacts with a soft rinse or dry cloth. Make sure the golden contacts are free of scratches or dirt. Also check if the card sits tightly in the tray - it shouldn't hang around.
- ❌ Formatting error: Try formatting the card via PC using the program SD Formatter.
- 📉 Slow work: check card speed with speed test; if it is low, replace drive.
- 🔄 Cyclical reset: Remove the card, it may be physically damaged and causes a short circuit.
⚠️ Warning: If the phone starts to warm up in the lower end immediately after installing the card, remove it immediately.This is a sign of a short circuit inside the drive, which can damage the smartphone's power controller.