Connecting Xiaomi Mi 4X to your computer via USB: A Complete Guide to Problem Solutions

Connecting a Xiaomi Mi 4X smartphone (aka Mi TV 4X for a TV, or Redmi 4X for a smartphone) to a computer via USB seems like a simple task, but in practice users face a lot of nuances. From lack of reaction during connection to file transfer errors, problems can arise at any stage. In this article, we will analyze all possible connection scenarios, including setting up drivers, selecting USB mode and fixing typical problems.

It is important to clarify if you have a Xiaomi Mi TV. TV 4X, The connection to the PC is carried out by HDMI or via a network cable (for transfer of files over the DLNA). USB-port TV-The consoles are usually used to connect flash drives, not to communicate with a computer. 4X (code name santoni, as it is most often implied by the abbreviation "4X" contextually USB-If you're looking for a TV manual, go to the section. FAQ end-of-article.

The main reasons Redmi 4X is not detected by the computer via USB are because of the settings of the smartphone itself, the absence of drivers or a cable malfunction.We will look at step-by-step steps for Windows 7/10/11 and macOS, and also discuss how to enable debugging over USB and activate file transfer mode. If you have already tried to connect, but failed, skip the introductory part and go to the "Troublesh".

What you need to connect

Before you connect the Xiaomi Redmi 4X to a PC, prepare:

• ⚡ Original. USB-Cheap Chinese cables often don't support data transmission, only charging.
• 🖥️ Computer with port USB 2.0/3.0. On laptops with USB-C You may need an adapter.
• 📱 Smartphone with unlocked screen. USB Require confirmation on the device.
• 🔧 Xiaomi Drivers (unless Windows installs them automatically).

Note the MIUI version on your Redmi 4X. In older firmware (below MIUI 9), the USB menu may look different. Current versions (MIUI 12+) support File Transfer (MTP), Photo Transfer (PTP) and Charging Only. If you have custom firmware (like LineageOS), the connection order may vary.

Also check if the smartphone is active developer mode. It is not necessary for simple file transfer, but it is useful for debugging over USB or unlocking the bootloader. How to turn it on, read the section "Activate the developer mode".

Step-by-step: how to connect Xiaomi 4X to a PC

Follow this algorithm to connect your smartphone to your computer correctly:

1. Connect the cable to USB-Use the back ports on the PC (they are more stable than the front ones).
2. Unlock the Redmi screen 4X. On a locked device. USB-The connection can only work in charging mode.
3. Select a mode. USB notice: 📁 File transfer (MTP) — portable. 📷 Transmission of photo (PTP) — if MTP It does not work (rarely required). ⚡ Charging only – if you only need to charge the device.

Wait for the drivers to install on your PC. In Windows, it can take 1-2 minutes.

If the USB mode notification doesn't appear, swipe down the screen to open the notification bar, and it should have a message saying "USB to transfer files" or "Charge via USB." Click on it and select the mode you want.

MacOS will also require Android File Transfer (the official Google software) to be installed, android.com/filetransfer. Once installed, plug in your smartphone and run the program, which will automatically display Xiaomi files.

Installation of drivers for Xiaomi 4X on Windows

If your computer doesn't recognize Redmi 4X even after selecting MTP, there's probably no drivers.

1. Download Mi. PC Suite from the official Xiaomi website: 🌐 Official page: pcsuite.mi.com 📥 Alternative: Qualcomm drivers (if Mi) PC Suite doesn't help).

Connect your smartphone to your PC and start the installer. Follow the wizard's instructions.

Restart the computer after installation.

If the Mi PC Suite doesn’t solve the problem, try manually installing drivers:

1. Open Device Manager (click Win + X → select the appropriate item).
2. Find the Redmi 4X list (may appear as "Unknown Device" or "ADB Interface").
3. Right-click → Update the driver → Search for drivers on this computer.
4. Specify the path to the driver folder (if downloaded separately) or select "Xiaomi Composite MDB Interface" from the list.

For advanced users, if Redmi 4X is defined as QDLoader 9008, it means that the smartphone is in EDL mode, in which case you will need special software like the Mi Flash Tool for recovery.

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If Windows persistently does not see Xiaomi, try to connect your smartphone to another one. USB-Or use an externally powered hub, sometimes the problem is power shortages in ports.

How to enable debugging over USB and developer mode

USB debugging mode is used to work with ADB, unlock the bootloader or install custom firmware, to activate it:

1. Open the Settings. → The phone.
2. Find the MIUI version and click on it 7 times in a row, and the notification will appear: "You became a developer!".
3. Back to Settings → Additionally" → "For developers".
4. Activate the USB Debugging switch and confirm the action.

On macOS, use Android File Transfer. The interface is intuitive: on the left, the folders of the smartphone, on the right, actions (copy, delete). APK-Files cannot be installed directly through MTP — need ADB file manager on a smartphone.

The transfer speed depends on the USB version:

Redmi 4X is equipped with a microUSB 2.0 port, so the maximum speed is limited to ~35-40 MB / s. If the transfer is slower, check the cable or connect to USB 3.0 (blue ports on PC).

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To speed up the transfer of large files (video, backups), archive them in ZIP on your smartphone before copying. This will reduce time and reduce the risk of errors.

Troubleshooting: Xiaomi 4X does not connect to PC

If your smartphone is not detected or errors occur, use this instruction:

⚠️ Attention: If Redmi 4X charge through USB, but not displayed as a drive, the problem is most likely in the settings USB You can use your smartphone or your drivers on your PC. Don't change the cable, check the software settings first.

Typical errors and decisions:

If Redmi 4X previously connected normally, Suddenly is no longer defined by:

1. Restart your smartphone and computer.
2. Try another cable (preferably original).
3. In Device Manager, remove all devices called Xiaomi or ADB, then reconnect.
4. Disable the antivirus (sometimes it blocks) USB-linkage).

For Linux (Ubuntu, Mint, etc.), you may need to install the mtp-tools package:

sudo apt install mtp-tools libmtp-common mtpfs

Once installed, connect your smartphone and use gMTP or Nautilus to access files.

⚠️ Note: If you have connected to Redmi 4X begins to warm or discharge quickly, this may indicate damaged USB-Disconnect the cable immediately and check your smartphone for physical damage.

Alternative ways to transfer files without USB

If USB-Connection is not possible (broken port, no cable), use one of these methods:

• 🌐 By Wi-Fi: Install on a smartphone FX File Explorer or Solid Explorer. Activate in the Remote Access settings or "FTP-server. Connect from the PC to the specified IP-address via browser or FileZilla.
• ☁️ Cloud services: Upload files to Google Drive, Mi Cloud or Yandex Disk. Download them to your computer through your browser.
• 📶 Bluetooth: Turn on Bluetooth on both devices.Pick them together and send files via the Send menu".

For large files (video, backups), Wi-Fi will be faster than Bluetooth, but slower than USB.

• 802.11n (2.4 GHz): ~30-50 Mbit/s.
• 802.11ac (5GHz): ~100-200 Mbps.

If you need to control your smartphone from a PC (for example, for screenshots or APK installation), use programs like Scrcpy (free, works on USB/Wi-Fi) or TeamViewer QuickSupport. Scrcpy will require on-board debugging over USB.

FAQ: Frequent questions about connecting Xiaomi 4X to PC