Redmi series smartphones have long proven to be reliable devices, but even 32 or 64 gigabytes of internal storage are overflowing sooner or later. This is especially true for the Xiaomi Redmi 6, which, despite its popularity, has a limited amount of internal memory in the basic versions. Installing an additional drive becomes the only right solution for storing thousands of photos, high-resolution videos and favorite music tracks.
Memory expansion does not require special tools or deep technical knowledge, but requires attention to detail. Installation can cause the device to fail to see the drive, or, in the worst case, damage contacts. In this article, we will discuss all the nuances of working with microSD cards for your smartphone.
You don’t need to be an expert in mobile technology to do this in a few minutes, but the key is to follow the algorithm and understand the physical design of the sim tray in Xiaomi devices.
Preparation for installation and choice of storage device
Before you start physically interfering with the design of the phone, you need to make sure you have the right drive. The Redmi 6 supports microSD cards, often referred to as "trand flash drives" of small format. SD-cards used in cameras, as the latter simply will not enter the slot.
The official specification indicates support for drives up to 128 GB, although in practice the device often works successfully with cards on 256 GB. When buying, pay attention to the speed class: to record video in HD or 4K (if supported by the camera) it is recommended to choose a Class 10 or UHS-I card.
⚠️ Warning: Don't try to insert a memory card by force. If it doesn't enter the slot of the tray with a slight click, then you've chosen the wrong side or position.
It is also worth pre-prepared, and it is desirable that the battery charge is at least 30-40%, although it is not necessary to fully charge the card just to install it, but if you plan to format the drive immediately or transfer data to it, a stable power supply will not be superfluous.
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Buy memory cards only from trusted electronics stores. There are many counterfeits on the market that can suddenly fail, taking with them your important photos and documents.
Removing the SIM card tray
The memory card slot in Xiaomi Redmi 6 is combined with a SIM card slot and located on the upper end of the case. To access it, you will need a special paper clip (company with the phone) or a thin needle. The use of knives or pins is not recommended, as they are easy to scratch the body or damage the mechanism of the retainer.
Find a small hole on the end face, which is usually located next to the noise reduction microphone, carefully insert the tool perpendicular to the body until light resistance, and then press a little harder until the tray pops out. Sharp movements are useless, the mechanism is springy and runs smoothly.
After extraction, carefully inspect the tray. Redmi 6 uses a hybrid slot or a combined variant, where one side is designed for the SIM card and the other for the MicroSD. The shape of the notch under the memory card has a specific bevel in one of the corners, which prevents improper installation.
Proper installation of MicroSD card
The most important step is to place the drive in the tray. Put the tray on a flat surface or hold it firmly between your fingers. Pay attention to the golden contacts: they should look down to the inside of the tray if you look at it from above, but in the case of Redmi 6, the design can vary depending on the revision, so focus on the shape.
The memory card should fit perfectly in the recess that is reserved for it. If you feel that the card protrudes over the edges of the tray or enters with difficulty, turn it over. A correctly installed card is fixed due to its own weight and light friction, it does not need to be glued.
☑️ Installation checklist
Once the card has taken its place, insert the tray back into the phone, and it's important not to confuse the sides: the tray only enters one side, usually the one where the bevel or logo is located, push it smoothly, without skewing, until the characteristic snap of the lock.
⚠️ Warning: If the tray doesn't enter to the end, don't force it. Take it out, flip it 180 degrees and try again. Forced indentation can break the contacts inside the smartphone.
Make sure the tray sits tight and doesn't protrude from the body. If done correctly, the smartphone will immediately react to the connection of new equipment.
Primary configuration and formatting
After turning on the phone, the Android system with a shell MIUI It should automatically detect the new drive. It'll show a detection notification on the screen. SD-If this does not happen, lower the notification curtain and find the corresponding message or go to the settings.
To work smoothly, the card needs to be formatted, and this action will delete all the data that might have been on it before, so if there's important information on the card, first connect it to the computer through an adapter, and the formatting will create the file system that the phone can understand.
Go to the settings menu, select Advanced Settings, then Memory. From the list of available drives, select your card. The system will offer two use cases: as a portable storage or as part of internal memory.
What is the difference between formats?
It is recommended to choose formatting as a portable medium if you plan to change devices often or store media files. If the goal is to make room for installing heavy applications, choose the option of internal memory, but be aware of the risks.
Default storage setting
Once formatted successfully, you need to tell the system where to save new files, and by default, the camera and voice recorder can continue writing data into internal memory, ignoring the free space on the map, which negates any effort to expand storage.
In the same Memory menu, find the Default Write switch or similar item. Activate it by selecting SD-You also have to go to the camera settings, take a picture, and check which folder it's saved to.
For multimedia applications like Telegram, WhatsApp, or YouTube, storage settings are often inside the apps themselves. In Telegram, for example, the path to cache changes under Settings → Data and Memory → The path to files.
| Parameter | Internal memory. | Portable media |
|---|---|---|
| Installation of applications | Possible (partially) | Impossible. |
| Transfer to other devices | Only with reset. | No restrictions. |
| Speed of operation | Higher. | Depends on the card. |
| Risk of data loss | Low. | Medium (on extraction) |
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Properly configuring the save path in each application separately is a guarantee that the internal memory of the smartphone will not overflow again in a month.
Transfer of already installed applications
If you choose to format a map as part of internal memory, the system will suggest migrating some applications right away, but many programs will have to be moved manually, which is true for games and heavy services that take up gigabytes of space.
Go to Settings → Applications → All applications. Select the program you want from the list. If transfer is possible, the Move button will be active there. If the button is grey, then the app developer has banned it from external media.
Now, you have to understand that even when you transfer some of the data, the app will still be in the phone's internal memory, which is the system files you need to run. It's rare to completely free the built-in drive, but it's possible to win a few gigabytes.
⚠️ Warning: Do not remove the memory card while the phone is on if the applications are installed on it. This can lead to system failure and errors».
Possible problems and ways to solve them
Sometimes users are faced with a situation where the phone does not see the memory card. First of all, check if the tray is fully inserted. Often the problem is oxidation of contacts. Wipe the golden pad of the card with a soft dry cloth or eraser.
If the device is writing «SD-card is corrupted" or requires formatting, although you just did, possibly the file is corrupted.Try formatting the card through your computer by selecting the file system FAT32 for cards up to 32 GB or exFAT for volumes above.
In rare cases, the problem may be a software failure of the MIUI shell. Rebooting your smartphone often helps the system re-scan ports and correctly identify the drive. If nothing helps, check the card on another device to rule out physical malfunction.