The modern smartphone has long ceased to be just a means of communication, becoming a powerful multimedia center that requires regular data exchange with the outside world. Users of the Xiaomi Redmi 4 Pro (also known as Redmi Note 4) often face the need to transfer photos, music or documents to the big screen for editing or backup. Despite the development of cloud technologies, physical connection via cable remains the fastest and most reliable way to transfer large amounts of information.
However, the connection process is not always smooth: the computer may not see the device, offer only charging or require the installation of specific drivers. In this article, we will discuss in detail all the nuances of connecting a popular smartphone to a PC running Windows, macOS or Linux. You will learn about the hidden developer settings, types USB-Cables and diagnostic methods that will help to eliminate any problems in a matter of minutes.
It is important to understand that the success of the operation depends not only on the software settings, but also on the quality of the equipment used. Cheap “charging only” cables often cause a broken connection, misleading the owner about the port failure. We will look at the technical aspects of the USB 2.0 interface used in this model and explain why the data transfer rate may differ from the stated one.
Preparation of equipment and verification of physical connection
The first and most common step that is often ignored is integrity testing. USB-The standard Micro-USB complete cord provides stable data transfer, but over time the contacts oxidize and the inner veins break down. If the phone is only charged when connecting, but does not emit a characteristic peripheral connection sound, try replacing the cable with a knowingly serviceable one.
Note the port of the computer. The ports on the front of the system unit often have worse contact or underpower than the connectors on the motherboard at the back. It is recommended to use different ports for diagnostics, excluding hubs and extension cords, which can interfere with the digital signal. It is also worth checking the port on the smartphone itself: the presence of pile or dust in the micro-USB connector can prevent the tight fit of the contacts.
When you connect, look for indicators: your smartphone should have a status bar icon, and your computer should have a new hardware installation audible signal. If there is no reaction at all, the problem is likely hardware. If the phone is only charging, the data line is not active, and you need to change the settings or change the cable.
- 🔌 Use the original Micro-USB cable or high-quality analogue with data transfer support.
- 💻 Connect the device directly to the motherboard ports on the back of the PC.
- 🧹 Clean the smartphone connector from dust with a wooden toothpick or compressed air.
- 🔋 Make sure that the battery charge of the smartphone is at least 15-20% steady-work.
⚠️ Note: If the smartphone port is loose or the cable is loose, an attempt to actively transmit data may short-circuit or damage the power controller.
The quality of the connection directly affects the speed of copying files. When using a damaged cable, you can see a sharp drop in speed or a complete stoppage of transmission in the middle of the process, which can lead to data loss or damage to the file system.
══ WIDGET:poll: What cable do you use to connect?:Original Xiaomi|Cheap Chinese cable|Cable from another brand|Damaged/old cable ══
Set-up of the regime USB-Android
By default, the MIUI operating system installed on the Redmi 4 Pro goes into Charge Only mode when connected to the computer. This is done for security reasons, to prevent unauthorized access to data when connecting to other people's chargers in public places.
Once you connect the cable, unlock your smartphone screen and lower the notification curtain from top to bottom. You will see a system notification “Charge via USB” (or similar). Clicking on this notification will open the USB mode selection menu. You will need to select MTP (Media Transfer Protocol) for file transfer or PTP if you plan to work with photos through specialized software.
Regime. MTP It is the most universal and allows you to see the internal memory and SD-map like normal disks in Windows Explorer. PTP emulates digital camera connectivity and may be useful if drivers MTP They don't install correctly, although the speed of this mode is usually lower. Choosing the right protocol is critical to accessing the file system.
- 📲 Lower the notification curtain immediately after connecting the cable.
- 🖱️ Click on the charging notification USB mode-opener.
- 📁 Select the "File Transfer" option (MTP)" access all data.
- 📷 Use the regimen. PTP Only for specific tasks with photos.
In some versions of MIUI, the menu may look different or hide deeper. If the standard notification doesn't appear, check the USB settings in the developer section below. Sometimes it helps to reconnect the cable after selecting the mode in the menu, if it was opened in advance.
⚠️ Note: Do not remove the cable while actively writing or copying files.This can lead to logical errors of the file system and data loss requiring formatting.
══ WIDGET:Tip: If the mode selection menu USB If it doesn't show up automatically, try turning on the lock screen and lowering the notification curtain again, sometimes the system "falls asleep" when you connect and ignores the request to switch mode. ══
Installation of drivers and work with the Device Manager
Windows 10 and 11 often automatically installs the basic drivers for Xiaomi Redmi 4 Pro, but they may not work properly or support all the features. If a new drive does not appear in My Computer and a yellow exclamation point is on in the Device Manager, you will need to manually install drivers.
For proper operation, you need to download and install the package ADB Driver or universal Android driver USB Driver. Official drivers are often included in the Mi utility PC Suite (although support for the official version is discontinued, drivers are working) or Xiaomi ADB/Fastboot Tools. After installing the software, it is recommended to restart the computer and reconnect the smartphone.
In Device Manager (devmgmt.msc), your device can appear in Portable Devices as Redmi 4 Pro or in Other Devices as Android with an error. In case of an error, select Update Driver (right-hand button" ->"Select a driver from the list of available" ->"MTP USB-It's a device." It's a force that will force the system to use the correct protocol.
| Type of device in the dispatcher | Status | Action required | The result |
|---|---|---|---|
| Portable devices (MTP) | It's working fine. | No action required | Files are visible in the conductor |
| Other devices (Android) | Code 10 or 43 | Install the MTP driver manually | You'll have access to files. |
| Ports (COM and LPT) | Android ADB Interface | It's for debugging, not for files. | Access to the developer console |
| Unknown device | Driver error | Update the USB controller driver | Stabilization of connection |
If the system persists in not seeing the device even after installing the drivers, try disabling the driver digital signature check when you boot Windows. Sometimes this is required for older or modified versions of drivers that do not have official Microsoft certification, but are completely secure.
══ WIDGET:checklist:check driver installation:Open Device Manager (devmgmt.msc)|Find the section "Portable devices"|Check for the absence of yellow badges|Confirm the display of the Redmi 4 Pro ══
Activation of USB debugging mode for advanced users
Debugging mode by USB (USB Debugging is a powerful tool designed primarily for application developers, but it can also help solve problems with connecting and managing files through console commands".
To unlock the menu, go to Settings → About Phone and find the "MIUI Version." You need to quickly click on this item 7-10 times in a row until the pop-up notification "You became a developer" appears. Then a new "Developers" item will appear in the main settings menu, in the "Additional" section.
Inside this menu, find the USB Debug switch and activate it. When you first connect to a computer with debugging enabled, you'll see a request for debugging permission from that computer on your smartphone screen. You'll need to tick the "Always Allow" box and press "OK." This will create a digital key linking a particular PC to your Redmi 4 Pro.
adb devicesOnce you have debugging enabled, you can use console commands to control the device. For example, the adb device command in the Windows command line (if you have an ADB installed) will show you a list of connected devices. If you see the serial number of the device, then the connection is set at a low level, even if the file explorer is not working.
- 🔓 Make 7 quick taps by build number MIUI menu-activate.
- ⚙️ Find the "Developers" item in the advanced settings.
- 🐛 Turn on the switchboard "Debugging by" USB" and confirm the action.
- 🔑 Allow access to a specific computer when a request is made.
⚠️ Attention: Included debugging by USB Do not keep this feature active all the time and do not connect your phone to unknown charging stations in public places to avoid potential security threats.
══ WIDGET:spoiler: Why do you need debugging if files are already visible?:Debugging allows you not only to transfer files, but also to install applications directly from your computer, make full system backups, take screenshots through the console and even refashion the device in case of a failure. ══
Problem Solving: The computer can't see the phone
The situation when all the actions are completed, but the computer stubbornly ignores the Xiaomi Redmi 4 Pro, is common. MTP. In the Device Manager, you can try to update the driver by selecting from the list"MTP USB-Device instead of storage device sometimes helps temporarily shut down antivirus or firewall, which can block new connections.
Another common problem lies in the settings of energy saving. USB-Windows ports. The system can turn off ports to save power, which interrupts the connection to the phone. USB-Hub", open their properties, go to the tab "Power management" and uncheck the box from the item "Allow disconnection of this device".
If nothing helps, try using third-party file management software like Mi. PC Suite (older version), Android File Transfer (for macOS) or OpenMTP. These programs have built-in drivers and can "break through" a connection where the standard Windows Explorer is powerless. USB.
- 🔄 Reboot your computer and smartphone – it solves 50% of the problems.
- 🛑 Disable the antivirus while checking the connection.
- ⚡ Stop Windows from turning off USB-power-saving ports.
- 💾 Use an alternative file manager for PC.
In rare cases, the problem may be in the file system. If the phone detects the connection, but does not allow you to open the folders, perhaps on the Internet. SD-If the problem has disappeared, the card or internal memory has errors. Try to remove the memory card and connect the phone without it. If the problem has disappeared, the card should be checked for errors or formatted.
══ WIDGET:keypoint: The most common cause of problems is not drivers, but a cheap cable that doesn't have any physical lines to transmit data. ══
Alternative methods of data transmission without cable
If physical USB connectivity is insurmountable, modern technology offers convenient wireless alternatives. For owners of the Xiaomi and Windows ecosystems, the “Mi Share” (formerly Mi Drop) feature, which allows you to transfer files over Wi-Fi at high speeds without loss of quality, is a great solution.
You can also use cloud services such as Google Drive, Yandex.Disk or the built-in Mi Cloud. By uploading files to a server from a smartphone, you can access them from any computer through a browser. Google Photos, which automatically uploads pictures when you have Wi-Fi, is ideal for constant synchronization of photos.
Another reliable method is using FTP. Many file managers on Android (such as the standard MIUI Explorer) have Network Access or FTP. Activating it, you get an address (such as ftp://192.168.1.5:212121) that you need to type into the address bar of Windows Explorer, which turns the phone into a network drive without unnecessary wires.
Windows 10/11 owners also have a mobile phone link that syncs contacts, messages and photos over Wi-Fi and Bluetooth, and while the speed of transferring large files is lower than USB, it is often enough for everyday tasks.
- 📡 Use Mi Share to transfer large files over Wi-Fi quickly.
- ☁️ Set up automatic photo sync via Google Photos.
- 🌐 Launch it. FTP-server through built-in conductor MIUI.
- 🔗 Use the Phone Connection app to integrate with Windows.
How to turn it on FTP-standard-conductor MIUI?
Why can Wi-Fi speeds be slow?
So even if the cable is lost or the port is damaged, you will not be left without the ability to transfer important data, but for the initial setup, flashing or recovery of the system after a failure, physical USB connection remains the only option.