How to Start Gathering Error Logs on Xiaomi: A Step-by-Step Guide for Users

Collecting error logs on Xiaomi devices is the first step to diagnosing system failures, freezes or malfunctioning firmware. Without this data, even experienced support engineers will not be able to determine the cause of the problem, and the user risks spending hours on useless firmware or resetting. However, many owners of smartphones, smartwatches or Mi TVs face difficulties already at the stage of turning on logs: where to find the right settings, what tools to use and how not to overload the device’s memory with hundreds of megabytes of unnecessary data?

In this article, we will look at all the stages of collecting logs – from activating hidden functions to sending reports to Xiaomi. We will focus on common errors that interfere with correct logging (for example, why the log may break or contain incomplete data), as well as alternative methods for devices with a locked bootloader or corrupted firmware, POCO or Mi TV Behavior is unstable, but you do not know where to start – this guide will help to collect the most useful information for repair or warranty maintenance.

Why you need error logs and what problems they help solve

Error logs are detailed records of the system, applications, and hardware components that record:

• 🔹 Critical crashes (such as sudden reboots or a black screen when the camera starts).
• 🔹 Application errors (falls) MIUI, Google Play Services hangs up).
• 🔹 Problems with iron (processor overheating, communication module malfunctions).
• 🔹 Firmware conflicts (for example, after updating through the OTA sound).

Without logs, Xiaomi support will refuse warranty repairs in 90% of cases, citing an “irreproducible problem.” For example, if your Redmi Note 12 accidentally restarts once a week, but at the time of contact is stable – it is impossible to prove the defect without logs. The same applies to custom firmware: Xiaomi.eu developers or PixelExperience require logs to analyze bugs.

In addition, journals help:

• 🛠️ Self-diagnose the problem (for example, find the culprit lags in the background).
• 📱 Speed up the exchange under warranty (with logs, the device will be sent for repair without unnecessary checks).
• 🔧 Provide data to the community (on forums such as 4PDA or XDA You can't get help without a log).

⚠️ Note: Logs contain confidential information – phone numbers, IMEI, Never publish it publicly (for example, on forums) and only send it through official Xiaomi channels or trusted developers.

Preparation of the device: turn on the developer mode and access to logs

By default. MIUI It hides the log collection tools, and you need to activate them:

1. Enable Developer Mode: Go to Settings → About the phone, tap 7 times on the version MIUI (on some devices - Assembly number. Enter password/pattern lock if required.

After activation, a new section for developers will appear in the Settings menu.

Activate log recording:

• Open the Settings. → For developers.
• Find the option Error Logs (or Log in English firmware).
• Turn on the switch and select the level of detail: Detailed (recommended for diagnosis).

On certain devices (e.g, POCO F5 Mi 11 Ultra may be different if no error logs:

• 🔍 Check the section Additional in the settings for developers.
• 🔍 Update. MIUI Up to the latest version (in old builds, the option may not be available).
• 🔍 Use alternative methods (we will discuss them below).

⚠️ Note: On devices with a bootloader, some logs may not be available. If you see the message "Loging disabled by the administrator", you will need to unlock through the Mi Unlock Tool.

Log collection methods: from embedded tools to ADB

Depending on the model and version MIUI There are several methods of logging available, and let's take them in order, from the simplest to the most advanced.

1. Built-in dens collector MIUI

The easiest way, but only suitable for non-critical errors (for example, interface freezes).

1. Open the Security app (shield icon).
2. Go to Problem Journals (or Failure Reports).
3. Click Create a report and play back the problem (for example, start the camera if it falls).
4. After the crash, return to the app and submit a report via Send to Xiaomi.

2. Mi Log Collector app (for smartphones)

The official tool from Xiaomi that collects advanced logs. Download it from Google Play or AppGallery:

• 📱 Launch the app and press Start.
• 🔄 Replay the problem (for example, connect to Wi-Fi if it falls off).
• ⏹️ Stop recording 1-2 minutes after failure.
• 📤 Save the log in.zip format and send it to support.

3. ADB-Logic (for experienced users)

If the problem is due to deep system failures (e.g., the device is not booting or is constantly restarting), you will need to ADB (Android Debug Bridge).

Instructions:

1. Install Platform Tools on your PC.
2. Connect the phone to the computer by USB (Turn on Debugging. USB developer-setting).
3. Open the command line in the adb.exe folder and type:

adb logcat -d > xiaomi_log.txt

For real-time log recording (e.g., when playing a bug):

adb logcat > xiaomi_log_realtime.txt

To stop the recording, press Ctrl. + C.

Charge the device to at least 50%|Free up 1-2 GB of memory|Enable debugging on USB (if you use ADB)|Record the time of playback of the bug|Make sure the problem is consistently reproduced-->

How to Reproduce a Problem for Correct Logging

Useless logs are logs that don't have a crash record. To avoid that, follow the rules:

1. Play the problem right after you start recording, for example, if Mi Band 7 is not synced, start logging and try syncing it at that point.
2. Don’t log more than 5-10 minutes, because overly large files are difficult to analyze, and key information can get lost among thousands of lines.
3. If the device reboots at 14:30, check the support message, so engineers can find the desired log fragment faster.

Examples of improper collection of logs:

• ❌ Recording was 30 minutes, but the problem was only played in the 28th minute.
• ❌ Logs collected after rebooting (failure information erased).
• ❌ In the log only work in the background without trying to reproduce the bug.

For periodic problems (such as occasional reboots once a day) use ADB filtered:

adb logcat | grep -E "crash|error|exception"

This command will only display lines with critical errors.

💡

If the problem only manifests itself under certain conditions (e.g., when connecting to a specific Wi-Fi), indicate this in the support message, for example: “The failure only occurs when you connect to a 5 GHz network on a 149 channel.”

Log analysis: what to look for and how to understand the cause of the failure

If you have collected logs but don’t know what to do with them, here are the key markers to look out for:

1. Critical errors (FATAL EXCEPTION)

Look for lines with:

• java.lang.RuntimeException – errors in applications.
• android.os.DeadObjectException – problems with system services.
• Signal 11 (SIGSEGV) — Core-level failures (often iron-related).

2. Network Errors (WifiState Machine, Connectivity Service)

If there is a connection problem:

• WifiLastResortWatchdog – Wi-Fi is permanently shut down.
• DHCP Failed is not a success. IP-address.

3. Overheating and battery problems

Look for:

• Thermal-engine – protection against overheating.
• BatteryStats is an abnormal charge charge charge charge.

For convenience, use online log analyzers, for example:

• 🌐 Extreme Logcat Analyzer (download logs carefully – do not publish sensitive data!).
• 🌐 RevSkills Logcat Analyzer (supports error level filtering).

Important: If the log has the line "Bootloader is locked", it means that some of the system logs may be hidden.

Sending logs to Xiaomi support: step-by-step instructions

Collected logs are useless if they are not sent correctly, and here are the official channels and rules of registration:

1.Through the Mi Community app

Suitable for smartphones and tablets:

1. Open Mi Community and go to the Feedback section.
2. Select a problem category (e.g., System failures).
3. Attach an archive with logs (maximum 50 MB).
4. Specify: Device model (e.g. Redmi Note 11 Pro)+ 5G). Version MIUI (find out in Settings → About the phone. Bug time (exact minutes) Steps to repeat the problem.

2.Through Xiaomi's support site

For all devices (including Mi) TV and Mi Band):

1. Go to the support page.
2. Select the category Send an error report.
3. Fill out the form, attach logs and wait for the answer (usually 3-7 days).

For devices with MediaTek (e.g., Redmi) 10C or POCO M4 Pro may require an additional driver for ADB. If the adb device command does not show the device:

1. Install Google Drivers USB.
2. Turn it on. MTP-mode USB.
3. Try another cable (cheap cables often don’t support data transfer).

FAQ: Answers to Frequent Questions about Log Collection