Xiaomi Redmi 9: what to do and how to fix

Owners of the popular budget smartphone often face a situation where the Xiaomi Redmi 9 starts to work unstable, this can manifest itself in sudden interface freezes, spontaneous reboots or slow response to touch. The problem often takes you by surprise, especially when the phone is urgently needed for an important call or navigation.

The reasons for this behavior can be quite different: from a banal lack of free memory to serious failures in system files. Do not panic and immediately carry the device to the service center, since in most cases the situation can be corrected yourself. In this article, we will discuss proven methods for diagnosing and restoring the health of your gadget.

The first thing you need to do when you find strange behavior is to analyze recent actions, maybe you installed an application from an unknown source or updated the system, and then the problems started, and understanding the root cause will help you choose the right algorithm for correcting the problems.

Primary diagnosis and forced reset

If your Redmi 9 has stopped responding to touches and buttons completely, a standard shutdown may not be available, and in such a situation, you need to perform a hard reboot. It is a safe procedure that does not delete your data, but forcibly terminates all the frozen processes and clears the RAM.

To do this, you need to press the power button and hold it for 10-15 seconds, and the screen should go out, after which the MIUI logo will appear. If conventional retention does not help, try a combination of power buttons and volume increase.

⚠️ Warning: Don't take your finger off the button immediately after the screen goes out. Wait for the manufacturer's logo to appear, otherwise the phone may go into hover again instead of rebooting.

Once you've successfully turned on, evaluate the system speed. If the lags are missing, it may have been a temporary failure of one of the background processes. However, if the problem recurs regularly, it's worth checking the state of the drive and RAM.

Analysis of memory and storage occupancy

One of the most common reasons why Xiaomi Redmi 9 is buggy is a critical lack of free space in internal memory: When more than 90% of the storage is filled, the system does not have enough resources to create temporary files and the normal operation of the application cache.

You can check memory status by going to Settings → About Phone → Storage. Here you will see a detailed diagram of the space distribution. Particular attention should be paid to the folders of messengers such as WhatsApp or Telegram, which can take up tens of gigabytes.

• 🗑️ Remove unnecessary screenshots and heavy videos from the gallery by moving them to your computer or the cloud.
• 📲 Clear the app cache through the standard memory management menu in the settings.
• 📸 Reduce the quality of video recording in the camera with 4K before 1080p, free-room.

You should also look at the "Other" section of the storage, which, if it takes up an abnormally large amount of space, could indicate errors in the file system or remnants of deleted programs, in which case manually searching for large files through the file manager will help.

💡

Use the built-in Security → Cleanup app to quickly remove junk files, but be careful with cleaning the cache of system applications.

System update and application verification

Software bugs that cause unstable work are often fixed by developers in newer versions of the firmware. If your Redmi 9 runs on an older version of MIUI, be sure to check for updates. Go to Settings → About Phone → MIUI version and press the check button.

But sometimes the problem is not the system, but the application, and if the phone starts to glittle right after you install a program, try to remove it, and the conflicting software can put a lot of stress on the processor, causing heat and brakes.

It is important to keep track of which apps have auto-run rights. On Xiaomi smartphones, many programs start with the system, consuming resources. Turn off auto-run for services you do not use regularly through the Apps menu → Permissions → Auto-run.

Resetting settings and rollback to factory state

If the software methods didn’t work and Redmi 9 continues to work incorrectly, a full Hard Reset may be required, which will return the phone to its original state by removing all user data, contacts, and installed apps.

Before starting the procedure, be sure to back up important data to a Google account or external drive. Reset can be done in two ways: through the settings menu if the phone is turned on, or through Recovery Mode if the system is not booting.

To enter recovery mode, turn off the device completely. Then press the power button and the volume button at the same time. When the Mi logo appears, release the power, but keep the volume up until the Recovery menu appears.

⚠️ Note: Wipe All Data is irreversible and once completed, it will be impossible to recover deleted photos or contacts without a prior copy.

Once the process is complete, the phone will automatically restart, the first load after reset can last longer than usual, up to 5-7 minutes, which is normal behavior of the system when initializing partitions.

Screen and touchscreen problems

Sometimes users say that the phone is buggy, implying problems with the touch screen. On Xiaomi Redmi 9, there is a “phantom tap” effect, when the phone opens the applications itself or prints text, often due to poor-quality protective glass or contamination of the screen.

Remove the protective film or glass and wipe the screen with a soft cloth. If the problem is gone, it means it was an accessory, cheap glass can create static electricity or simply interfere with the normal operation of the digitizer.

It's also worth checking your sensitivity settings. Some firmware versions have a "Gloves Mode" option that increases the sensitivity of the screen, and if it's turned on unnecessarily, it can lead to chaotic reactions to touch.

When Professional Intervention is Required

There are situations where software methods are powerless. If the Redmi 9 freezes even in safe mode, warms up in the area of the processor without a load, or has artifacts on the screen (bands, stains), it is a hardware breakdown.

A common problem with budget models is the discard of the display plume or battery degradation, which can not produce the desired voltage under load. In such cases, self-repair can lead to the final failure of the device.

• 🔋 Phone turns off when charged 20-30% — battery-wear.
• 📱 The screen reacts with a delay or does not respond in certain areas – touch screen damage.
• 🔥 The case heats up a lot at the top – a problem with the motherboard or processor.

Contacting Xiaomi’s authorized service center will allow you to make an accurate diagnosis, the wizard will be able to determine whether you need to solder components or completely replace modules, and do not try to open the phone yourself if you do not have experience, as this will deprive you of warranty.

💡

If resetting and flashing didn’t help, the 99% probability problem lies in the hardware of the device.

Questions and Answers (FAQ)