Connecting a flash drive to a Xiaomi Redmi smartphone may seem like a trivial task, but in practice, users face a lot of nuances: from choosing the right adapter to setting up the file system. USB-Ports are standard, mobile devices require specifics OTG-Technology, file system support, and even firmware versions MIUI. This article will not only list the steps of connection, but also reveal the hidden limitations of Xiaomi to work with external drives, which the manufacturer rarely advertises.
Feature of Redmi smartphones (including models from Redmi Note 12 to Redmi) 10C) It is a software-based energy optimization that sometimes blocks power consumption. OTG-In addition, not all flash drives are equally compatible: for example, drives with exFAT file system may require additional drivers, and cheap drives may require additional drivers. OTG-Adapters to cause reading errors, and we'll look at all of these cases, and we'll also give you some advice on how to choose the hardware to keep your flash drive running smoothly.
What flash drives are compatible with Xiaomi Redmi
Not everyone. USB-The drive will work correctly with the smartphone Xiaomi:
- 🔌 File system: Redmi supports FAT32 (Up to 32 GB), exFAT (recommended for storage devices) >64 GB) and NTFS (only for reading without additional software. EXT4 or HFS+ unrecognized.
- 🔋 Power: High-power flash drives (for example, some of the SSD-storage devices) may not be determined due to current limitations in OTG-port (usually up to 500 mA).
- 📏 Physical size: For models without connector USB-C (Like Redmi. 9A) You will need a Micro-USB adapter → USB-A. Devices with USB-C (For example, Redmi Note 11 Pro supports direct connection via adapter USB-C → USB-A.
- 🔄 Transfer speed: Redmi with Snapdragon chipsets 6xx/7xx support USB 3.0 (before 5 Gbps, but the real speed depends on the adapter quality.
Important: Some budget models (such as the Redmi A1) may not support exFAT out of the box, in which case you will need to format the flash drive in FAT32 or install third-party NTFS reading software.
What you need to connect
The minimum set for connecting a flash drive to Xiaomi Redmi:
- 📱 Smartphone with support OTG (all Redmi models starting in 2018, except for some budget series).
Advice: Avoid cheap OTG-These can cause port overheating or data loss when transferring files, UGREEN.
☑️ Preparation for connecting the flash drive
Step-by-step instructions for connecting
The process of connecting the flash drive to Xiaomi Redmi consists of 5 steps:
- Connect. OTG-Smartphone adapter. There's a notification on the screen "USB-Drive connected. If there is no notification, check the adapter quality or try another port (for models with a new device). USB-C).
- Unlock the screen (on some MIUI firmware, access to the flash drive is blocked on the locked screen).
- Open the notification and select Open Files (Xiaomi's Files app will open). Alternatively, go to Settings → Warehouse → USB-accumulator.
- Configure access: Read/write: click "Allow" in the access request. For formatting, select "Configure" → "Format as internal memory" (permanent use only).
Solid Explorer
Note: If the flash drive is not detected, try:
- 🔄 Reconnect the adapter.
- 🔋 Connect your smartphone to charging (some flash drives require additional power).
- 📱 Reset the device.
What if the flash drive is detected, but the files are not displayed?
Addressing common problems
Even with the right connection, Xiaomi Redmi users face common errors, and let’s look at their causes and solutions:
| Problem. | Possible cause | Decision |
|---|---|---|
| The flash drive is undetectable. | Faulty. OTG-adapter Low battery charge (<20%) The flash drive is formatted in NTFS | Try another adapter Charge your smartphone to 30%+ Reformat the flash drive to exFAT |
| Mistake "USB-device not identified" | Conflict with another connected device Damaged port contacts | Turn off all accessories (earphones, charging) Clean the port with compressed air |
| Slow file transfer | USB 2.0 adapter Flash has a low speed class | Buy an adapter with USB 3.0 support Use a U3 or A2 class flash drive |
| Files are not copied ("Insufficient memory" error) | The flash drive is formatted in FAT32, which does not support >4 GB files | Reformat the flash drive to exFAT via PC |
Critical error: If the smartphone starts to overheat or discharge faster than usual after connecting the flash drive, immediately turn off the drive. This may indicate a short circuit in the adapter or power incompatibility.
💡
If you frequently connect flash drives, disable the Battery Optimization feature for the Files app in the MIUI settings. This will prevent connection breakage during data transfer.
How to Use a Flash Drive as an Internal Memory
Adoptable Storage (built into Android) allows you to use the flash drive as part of internal storage, which is useful for models with low memory (for example, Redmi 9C 32 GB).
- ⚠️ The flash drive will be encrypted and will not be read on other devices.
- ⚠️ After removing the flash drive, the applications installed on it will stop working.
- ⚠️ The speed depends on the class of the flash drive (recommended). UHS-I U3).
Instructions for setting:
- Connect the flash drive through the OTG.
- In the notification, click “Configure” → “Use as internal memory”.
- Follow the instructions of the system (the process will take 5-10 minutes).
- After formatting, move the data to Settings → Storage → Data Transfer.
⚠️ Note: If you remove a flash drive configured as internal memory without first "safe retrieval", the smartphone may freeze or reboot. Always use the "Extract" option in the notification.
Alternative ways to connect the flash drive
If the OTG doesn’t work or you need to plug in a flash drive without an adapter, consider these methods:
- 🌐 Networked (FTP/HTTP): Connect the flash drive to the PC and run FTP-server (e.g. via FileZilla Server) on your smartphone use Solid Explorer or FX File Explorer to connect to the server.
- ☁️ Cloud Sharing: Copy files from a flash drive to a PC, upload them to Google Drive/Mi Cloud, then download to your smartphone.
- 📡 Wi-Fi Direct: Some flash drives (such as SanDisk Connect) have their own Wi-Fi module.
The advantage of networking is that there are no restrictions on file system and data volume, but the transfer speed will be lower than with a direct connection via OTG.
💡
For regular work with flash drives is optimal OTG-supportive adapter USB 3.0 and a class flash drive A2 (For example, SanDisk Extreme Pro. Networking techniques are suitable for one-time transmissions of large amounts of data.
Safety when working with flash drives
Connecting external drives to the smartphone carries risks:
- 🦠 Viruses: Flash drives often become malware carriers, especially if previously connected to public PCs.
- 🔓 Data Leakage: If you lose a flash drive configured as internal memory, third parties can access your files.
- ⚡ Port Damage: Frequent connection/disconnection OTG-adapter breaks the connector USB-C/Micro-USB.
Safety recommendations:
- Install an antivirus (like Dr.Web Light) and scan the flash drive the first time you connect.
- Use encryption (in the USB flash drive settings in MIUI, select "Encrypt").
- Do not remove the flash drive during data transfer – this can lead to file loss or file system damage.
⚠️ Note: if you connect the flash drive to Xiaomi Redmi via OTG and charge your smartphone at the same time, use a hub with Power Delivery support (for example, Baseus). 3-in-1). Regular hubs can cause controller overload USB and cause the port to be shut down.