Have you ever looked into your Xiaomi store and found a mysterious catchlog folder that takes up gigabytes of memory? This file is one of the most common space eaters on devices running MIUI, but most users do not even know it exists until they start looking for where precious gigabytes have disappeared.
Unlike app cache or downloaded media files, catchlog is not cleaned by standard system tools; it is created automatically, often after crashes, updates or diagnostic procedures, and can grow to several gigabytes — especially on devices with MIUI 12/13/14 and later. In this article, we will understand what catchlog is, why it appears, whether it can be deleted without risk to the system, and how to prevent it from reappearing.
Spoiler: 90% of the time, this file is safely deleted, but there are nuances you should be aware of, such as deleting catchlog through the file manager can cause errors in Xiaomi service centers during warranty repairs – and we’ll explain how to avoid this.
What is catchlog and why is it needed in Xiaomi?
Catchlog (catch and log) is a system file report that is automatically generated by MIUI to record critical events.
- 🔄 Failure logs are data on application crashes, kernel errors, or drivers.
- 📱 Equipment diagnostics – information about the operation of sensors, communication modules (Wi-Fi, Bluetooth, GPS).
- 🔄 Debugging data is a process tracing used by Xiaomi engineers to analyze problems.
- 📦 Update logs are records of the firmware installation process (including OTA-updates).
The catchlog file is usually along the following path:
/sdcard/MIUI/debug_log/catchlog/
or
/data/media/0/MIUI/debug_log/catchlog/Under normal conditions, its size does not exceed 50-100 MB, but with frequent errors (for example, after an unsuccessful update or application conflict), it can grow to 1-5 GB. This is especially true for devices with MIUI 13/14, where the system actively logs to improve stability.
⚠️ Warning: If you notice that the catchlog folder appears again and again after deleting, this may indicate a hardware malfunction (for example, memory or Wi-Fi module problems).
Why does catchlog take up so much space?
The main reason for catchlog growth is overdiagnosis, which MIUI triggers in the background.
- 🔄 Frequent application crashes – if an application crashes repeatedly, the system records each case.
- 📡 Network problems – unstable Wi-Fi or mobile internet provoke the recording of connection logs.
- 🔄 Failed updates – interrupted firmware installation can create gigabytes of debugging data.
- 🛠️ Developer Mode – if activated, the system will log in.
For example, after upgrading to MIUI 14, many users of Redmi Note 11 and POCO X4 Pro complained about the appearance of a catchlog file size of 3-4 GB. The reason is a bug in the log collection mechanism, which Xiaomi fixed only in subsequent patches.
Another important point is that catchlog can hide from standard file managers. To see it, you need to enable the display of hidden files (in MI File Manager this is done through Settings → Show hidden files).
How to safely remove catchlog: step-by-step instructions
Deleting catchlog won't harm the system if you do it right. Here are the proven ways:
Method 1: File Manager (the easiest one)
Open the File Manager (MI File Manager) application
Go to Internal Memory → MIUI → debug_log
Find the catchlog folder and delete it.
Clean the basket (if required)
Reset the device-->
If the folder is not deleted, try:
- Close all applications through recent ones.
- Disable Developer Mode (if enabled).
- Use a different file manager (e.g. Solid Explorer).
Method 2: ADB (for experienced users)
If the standard deletion doesn’t work, you can use Android Debug Bridge (ADB).
- Install. ADB-PC drivers.
- Connect your phone to your computer and activate USB Debugging in Settings → About Phone → MIUI version (click 7 times to unlock Developer Mode).
- Open the command line and type in: adb shell rm -rf /sdcard/MIUI/debug_log/catchlog/
⚠️ Warning: Do not use the rm command -rf/without specifying the path - this can delete all data on the device!
Method 3: Through TWRP (for custom firmware)
If your Xiaomi has a custom TWRP recap, you can delete the catchlog as follows:
- Load to TWRP (clip Power + Volume Up).
- Select Advanced → File Manager.
- Go to /data/media/0/MIUI/debug_log/.
- Delete the catchlog folder and confirm the action.
💡
If the folder appears again after deleting, check the device for viruses using Malwarebytes or Dr.Web Light - some malware masquerades as system logs.
How to prevent catchlog recurrence
To prevent catchlog from growing again, follow these guidelines:
| Cause of the occurrence | Decision |
|---|---|
| Frequent application failures | Update problematic apps or remove them. Use Safe Mode for diagnostics. |
| Unstable MIUI Update | Install the latest firmware version through Settings → System Update. |
| Active Developer Mode | Turn it off in Settings → Additional → For developers. |
| Problems with iron (Wi-Fi, Bluetooth) | Do the test at the service center or reset your network settings (Settings → Network → Reset). |
If catchlog appears after each update, try:
- 🔄 Reverse to the previous version MIUI (via Fastboot).
- 📱 Install custom firmware (e.g. Pixel Experience or LineageOS) that does not have a catchlog mechanism.
- 🛠️ Contacting a service center may be a hardware problem.
💡
Regularly cleaning the cache through Settings → Storage → Clean helps reduce the size of the catchlog, but does not eliminate the cause of its occurrence.
What happens if you don’t delete the catchlog?
In most cases, catchlog does not affect performance, but there are risks:
- 📉 Busy memory – if the file grows to 5+GB, it can lead to errors in writing new data (photos, videos, applications).
- 🔄 System slowdown – Lags may occur when active logging (e.g. during crashes).
- 🚨 Warranty issues – a service center may refuse repairs if it discovers that logs have been manually deleted (this hides the history of the malfunctions).
However, not all catchlog files are equally useful.
- 📁 catchlog_boot - Logs of system boot (can be deleted).
- 📁 catchlog_radio — data on the modems (better left if there are problems with communication).
- 📁 catchlog_update — update logs (can be deleted after a successful firmware installation).
Can I turn off the catchlog forever?
Catchlog on different models of Xiaomi: features
The catchlog logging mechanism works differently on different devices.
| Model/Series | Features of catchlog | Recommendations |
|---|---|---|
| Redmi Note 10/11/12 | It often grows after the MIUI 13→14 updates. | Remove via TWRP or ADB. |
| POCO F3/F4/F5 | Logs can take up to 2GB due to aggressive game optimization. | Turn off Game Turbo in the settings. |
| Xiaomi 12/13/14 | The system automatically clears logs older than 30 days. | No manual cleaning is required. |
| Redmi 9/9A/9C | Catchlog can appear due to bugs in the Wi-Fi module. | Reset the network settings. |
On devices with MIUI for POCO (e.g., POCO X3 Pro), the catchlog file is often disguised as a folder miui_debug. To find it, search the file manager on request *.log.
Myths and truths about catchlog
There's a lot of conflicting information on catchlog on the Internet, and let's figure out what's true and what's not.
⚠️ Warning: If you see the advice to "remove catchlog via fastboot erase userdata," ignore it! this command will completely reset the device to factory settings.
Myth 1: “Catchlog is a virus.”
Truth: This is the official MIUI component, but some malware can create files with similar names (e.g. catchlog.apk).
Myth 2: “Deleting the catchlog will speed up the phone.”
Truth: Only if the file is 5+GB and the memory is full, otherwise there will be no performance gains.
Myth 3: “Catchlog is only for service centers.”
Truth: It is also used for automatic diagnostics (e.g., when sending error reports to Xiaomi).
Myth 4: “If you delete the catchlog, the phone will stop updating.”
Truth: Updates work independently of logs, but without them it will be more difficult to diagnose problems when you fail to install firmware.