If youβve ever encountered technical issues on Xiaomi devices β whether itβs a smartphone, Mi Band smartwatch or Mi TV TV β You've probably heard of "system logs" or "logs," and these files contain detailed information about how the device works, errors, and events that help both users and service centers diagnose malfunctions, but how exactly are these logs formed? Here comes to the rescue built-in magazine generator Xiaomi β a tool that is not known to all, although it can significantly simplify the solution of many problems.
In this article, we will go into detail about what a log generator is in the Xiaomi ecosystem, what devices it is available for, how to activate it and where to search for stored logs. We will focus on practical scenarios, from sending logs to supporting errors on your own. If you have ever seen an Error Reporting or System Logs settings and didnβt understand why you need it, this article is for you.
What is a log generator in Xiaomi devices
A logger (or logger) is a system component that automatically captures events occurring on a device, and in the context of Xiaomi, it works on several levels:
- π± Hardware layer: records of the processor, memory, sensors (for example, a gyroscope or accelerometer in the Mi Band).
- π€ OS level: logs MIUI Android TV (for TVs), including app crashes, update errors.
- π Application layer: data on crashes of programs, network requests (for example, in Mi Home for smart home).
It's important to understand that a log generator is not a separate application, but a part of the firmware. It runs in the background and is activated either automatically (in case of critical errors) or manually through special settings. For example, in Xiaomi smartphones, logs can be collected through the Settings menu. β The phone. β Version. MIUI (multiple-click on the firmware version).
The main difference between Xiaomi logs and standard Android logs is the integration with the companyβs services, for example, when sending an error report via Feedback, the logs are automatically attached to the ticket and analyzed by engineers. This speeds up the problem solving, especially when it comes to bugs in the MIUI or-appendix.
What Xiaomi devices are available for the magazine generator
Log collection is available in almost all Xiaomi ecosystem devices, but log access and format may vary.
| Type of device | Log-supported models | Where to look for magazines | Features |
|---|---|---|---|
| Smartphones | Redmi Note 12/13, POCO F5/X5, Mi 13/14, all-in-one MIUI 12+ | Settings β The phone. β System logs or through Feedback | Logs are divided into system and application, and export to.txt or.zip is supported. |
| Smart watches | Mi Band 7/8, Xiaomi Watch S3, POCO Watch | Through the Mi Fitness or Zepp Life app (Device section) β Magazines") | Logs contain data on synchronization, sensor errors, firmware updates. |
| Televisions and consoles | Mi TV A2/Q2, Mi Box S, Mi TV Stick | Settings β The device β Error logs or through ADB | Logs include data on overheating, Android crashes TV, trouble HDMI. |
| Smart home. | Mi Robot Vacuum, Mi Air Purifier, Mijia sensors | Through the Mi Home app (section "Device" β Settings β Magazines") | Errors of connection to Wi-Fi, failures in the operation of motors, sensor data are recorded. |
It is worth noting that on some devices (for example, budget models Redmi or older versions of the Mi Band) access to logs may be limited, in such cases, collecting logs will require a connection to a PC and the use of tools such as: ADB MiFlash.
β οΈ Note: On custom firmware devices (like LineageOS or Pixel Experience), Xiaomiβs regular log generator may not work.
How to turn on and configure the magazine generator on the Xiaomi smartphone
On smartphones under control MIUI You can run log collection in a number of ways, and the easiest way is through the built-in menu:
- Open Settings and go to About Phone.
- Click on Version. MIUI 5-7 times until you become a developer!.
- Go back to the main Settings menu and open a new section for developers.
- Activate System Logs or Collect Error Reports.
- Choose the type of logs: Basic (critical errors only) or Detailed (all events).
After activation, the logs will be saved in the folder. /sdcard/MIUI/debug_log. For manual log collection (for example, before contacting for support), use the Feedback app:
- π Open Feedback and select the problem category (e.g. System or Applications).
- π Describe the error and click Send Report. The system will automatically attach logs for the last 24 hours.
- π If you need to save logs locally, click Export logs before sending.
βοΈ Preparation for collecting logs on Xiaomi
For advanced users, log collection is available through ADB. Connect your phone to your PC and execute the command:
adb logcat -d > xiaomi_logs.txtThis will save the complete system logs to the file. xiaomi_logs.txt. Use keys to filter errors, for example:
adb logcat -s "AndroidRuntime:E" *:Sβ οΈ Attention: Detailed logs can take up to 500MB per day.If the device is short on memory, turn off the collection after diagnosis or set up automatic cleaning through Settings β Warehouse β Cleanup.
Where to look and how to read magazines on Xiaomi devices
Logs are stored in different places depending on the type of device. Let's look at the main locations and formats:
Smartphones and tablets
Log files are stored in the following folders:
- /sdcard/MIUI/debug_log/ β Basic Logs of System and Applications.
- /sdcard/MIUI/feedback/ β Reports sent via Feedback.
- /data/log/ β System Logs (Available with root rights only).
File formats:
- .txt - text logs (can be opened in any editor).
- .zip β archives with full dumps (including screenshots and sensor data).
- .log is the raw logcat log logs.
Smart watches and fitness bracelets
The Mi Band or Xiaomi Watch logos can be exported through the Mi Fitness app:
- Open your device profile in Mi Fitness.
- Go to Settings. β Magazines.
- Click Export Data β the file will be saved in.csv (for analysis in Excel) or.json (for developers).
Televisions and consoles
On Mi. TV Mi Box Logs are available through:
- Settings β The device β Error logs (text format).
- ADB β Connect to the device and do: Adb pull /data/log/ tv_logs/
To read the logs, use:
- π Notepad or Notepad++ β for simple.txt files.
- π Logcat Reader (Android) or Android Studio β for logcat analysis.
- π Excel β for.csv magazines with smart watches.
What does a typical Xiaomi log look like?
Why journals are needed: practical use cases
Log collection is not just a technical feature, but a tool that can save time and nerves. Here are real situations in which Xiaomi magazines are useful:
1. Diagnostics of failures and errors
If your Redmi Note 12 suddenly restarts or Mi Band 8 doesnβt sync, logs can help identify the cause.
- π There may be a record of the processor overheating (thermal-engine) in the logs, which explains the random reboots.
- πΆ The Bluetooth Adapter Error: STATE_OFF It will indicate a problem with the Bluetooth module in the smart watch.
2. Appeal in support of Xiaomi
When you create a ticket in a Xiaomi service center, you're asked to provide logs, without them, diagnostics can take days, and with magazines, hours. POCO F5 It's flashing, and there's a log in there, like:
05-21 09:15:22.456 1234 1234 E SurfaceFlinger: hwc_layer=1: HWC2::Error::BadDisplay "Display 0 is invalid"This clearly indicates a problem with the display or graphics driver.
3. rollback of updates
If after the update MIUI Bugs have appeared (for example, it does not work). NFC), Logs can help you confirm that the problem is massive:
- π¦ Firmware version (ro.miui.ui.version.name)=V14.0.5.0.TMCCNXM).
- π§ Errors of loading modules (Failed to load) /vendor/lib64/hw/android.hardware.nfc@1.2-service.xiaomi.so).
4. Development and customization
If you install custom software (for example, TWRP Or Magisk, logs can help you debug conflicts, like an error:
avc: denied { execute } for path="/data/local/tmp/magisk" dev="dm-0" ino=1234 scontext=u:r:untrusted_app:s0:c123,c256,c512,c768 tcontext=u:object_r:magisk_file:s0 tclass=fileThis is a problem with SELinux rights that can be fixed through Magisk Manager.
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Logs are your main argument in warranty disputes: if the service center refuses to repair the device under warranty, citing "mechanical damage", and there are records of factory defects in the logs (for example, errors in the warranty). battery_health From the first days of use, this can be the basis for free repairs.
Common errors when working with a magazine generator
Even experienced users sometimes encounter problems when collecting logs, and here are the common mistakes and how to avoid them:
1. Logs are not saved
If the log is activated, the files do not appear in /sdcard/MIUI/debug_log, check:
- π Write rights: Sometimes antiviruses (such as Mi Security) block access to the folder. debug_log excepted.
- π§ Developer Settings: Make sure the option Do not turn off background processes is enabled.
- ποΈ Free space: If the device has less than 1 GB of memory, the system can automatically clear logs.
Logs empty or incomplete
If files are created but contain little information:
- π Restart the device and play back the problem just before collecting the logs.
- π± Make sure you choose Detailed Journals, not Basic Journals.
- βοΈ For Mi Band, update your firmware through Mi Fitness β older versions may not save full logs.
3. Errors when sending via Feedback
If the Feedback app is Failed to upload logs:
- π Check your internet connection (logs are sent to Xiaomi servers in China, so it can be blocked). VPN).
- πΆ Try sending a report over a mobile network, not Wi-Fi.
- π Update Feedback to the latest version in the Mi App Store.
β οΈ Note: On some devices (e.g. Redmi) 9A s MIUI 12.5) when collecting logs through ADB There may be an adbd error that cannot run as root in production builds, which means that you will need to bootloader to get full logs).
Alternative ways to collect logs on Xiaomi
If the regular log generator is not working or available, you can use third-party tools.
Annexes for logs
- π± Logcat Extreme (Play Market) β allows you to filter logs by tags and save to.txt.
- π MatLog β open source, support for color markup errors.
- π aLogcat β Minimalist interface, export to.csv.
To work these applications, you need to include debugging by USB developer-setting.
2. ADB and Fastboot
For deep diagnostics, connect the device to the PC and use the commands:
- Real-time log collection: Adb logcat | grep -i "error" (filters only errors).
- Requires root: Adb shell su -c "dumpsys -l" > dumpsys_log.txt
3.Recovery mode
If the device is not turned on but loaded into Recovery (e.g, TWRP), We can collect logs through:
- Connect the phone to the PC.
- V TWRP Choose Advanced β Copy Log.
- The recovery.log file is copied to the PC.
4. Service codes
Some Xiaomi devices have engineering codes for diagnosis:
- π Enter ##4636### in the dialer, and the testing menu will open, where you can save network logs and batteries.
- π To check the battery, use ##6484## (powers on Redmi Note 10 and later).
π‘
If you need to send a log to support Xiaomi, but the file is too large (over 50 MB), archive it through the file. 7-Zip It's going to reduce the size by 30 to 40 percent without losing data.