How to fix a bug in the phone Xiaomi: 7 proven ways

Xiaomi smartphones are known for their value for money ratio, but even they are not immune to software failures and hardware errors, POCO Or Mi started to slow down, or it started to send out error messages, or it didn't turn on at all -- don't panic. In 90% of cases, you can solve the problem yourself without going to the service center.

In this article, we’ll break down the 7 main types of errors on Xiaomi phones (from system glitches to hardware issues) and give you step-by-step instructions for fixing them, and you’ll learn when a reboot is enough and when a full factory reset is required – and how to do it without losing data. All methods tested on current models of 2023-2026, including Xiaomi 14, Redmi Note 13 Pro+ and POCO F6.

Before you start repairing, identify the type of error, such as hanging on the logo. MIUI And constant reboots require different approaches. If you're not sure about the diagnosis, use ours. FAQ-section.

1. Diagnostics of an error: how to tell what is broken

The first step is to identify the problem accurately, and Xiaomi’s bugs fall into three categories:

• 🔄 Software glitches: glitches MIUI, Application freezes, update errors.
• 🔋 Hardware problems: overheating, discharged battery, faulty display.
• 📡 Network Errors: Lack of communication, Wi-Fi or Bluetooth problems.

To narrow down the search, answer the questions:

• ❓ The error occurred after updating or installing the application?
• ❓ The phone responds to charging (light indicator, vibrates)?
• ❓ Is there physical damage (falls, moisture infestation)?

If the phone is switched on but is not working properly, check:

1. The MIUI version in Settings → About Phone → MIUI version.
2. Free space in memory: Settings → Memory.
3. Processor Temperature (use the CPU Monitor app).

⚠️ Warning: If the phone doesn't respond to the power button and doesn't charge, don't try to disassemble it yourself - this can lead to loss of warranty.

2. Programming errors: fixing the glitches MIUI

Most of the problems are related to the firmware MIUI. Consider typical scenarios and solutions:

The telephone brakes or reboots spontaneously

Reasons:

• 🗑️ Completed memory (less than 1 GB free).
• 🔄 Application conflict (especially after update).
• 🐛 Bug in MIUI (beta-version).

Decision:

1. Clear the cache: Settings → Memory. → Clear the cache
2. Remove unused applications through Settings → Applications → Application Management.
3. Turn off auto-start for background programs: Settings → Battery and productivity → Autostart control

Clear the system cache|Remove unused applications|Turn off autostart for 10+ applications|Reboot the phone-->

Error "Application stopped"

If a particular application (e.g. Camera or Gallery) consistently fails:

1. Clear the application data: Settings → Annexes → [Title of the annex] → Warehouse → Clear the data
2. Update the app through Google Play.
3. If the problem persists, roll back the update (cancel update button in the same menu).

On Xiaomi models with MediaTek processor (for example, Redmi) 12C) Camera data reset may cause loss of settings HDR Before reset, back up your phone through Mi Cloud.

2.3. Fails to update MIUI

If the update “hangs” during the download or installation phase:

• 📶 Check your internet connection (better to use Wi-Fi).
• 🔄 Restart your phone and try again.
• 📁 Clear the folder. /cache Recover Mode (instruction below).

3. Hardware errors: battery, display, buttons

If the problem is hardware, the algorithm is different. Let's look at the most common cases.

The phone does not turn on or respond to charging

Reasons:

• 🔋 Battery discharge (even if the indicator does not burn).
• 🔌 Faulty cable or adapter (try the original from Xiaomi).
• 🔧 The charging connector is damaged (check for debris).

Decision:

1. Connect your phone to charge for 30 to 60 minutes, even if there is no reaction.
2. Try hard reset: Press the power button + Volume up for 15-20 seconds
3. If the charging indicator flashes red, the battery is discharged to 0%. Wait 1-2 hours.

⚠️ Attention: On models POCO F5 Xiaomi 13T After full discharge, the power controller protection may work, in which case the phone will not turn on even if you connect to a charger, the solution is to hold on charging for at least 3 hours or use it. USB-Cable with Quick Charge 3.0 support+.

The sensor or part of the screen is not working

If the screen only reacts to a part of the touch or is completely dead:

• 🧹 Clean the screen of dirt and film (sometimes they block the sensor).
• 🔄 Restart your phone in Safe Mode: Press the Power Button → Long press on "Switch off" → "Safe regime"
• 🛠️ Check the sensor through the test: ##6484## (type in the dialer number)

If the test shows white stripes or non-responsive zones, it is a hardware malfunction. On Redmi Note 12 and later, the touchscreen can be replaced separately from the display (cost) ~3 000–5 000 ₽).

Volume or power buttons are not operating

Possible causes:

• 💧 Getting moisture (check the moisture indicator under the tray) SIM-map).
• 🔧 Mechanical damage (fall, impact).
• 🔄 Software failure (rarely, but after updates).

Temporary solution: Use Assistive Touch (virtual buttons):

Settings → Special features → Assistive Touch

Hard Reset: When and How to Do It

If the phone doesn't respond to commands or is stuck on the logo, a complete reset may be required.This will delete all data, so use the method only as a last resort.

When you need Hard Reset:

• 🔄 The phone is looped on the boot (endless logo) MI).
• 🔒 You forgot your pattern lock or password.
• 🐢 The system is extremely slow, even after cleaning the cache.

Instructions for Xiaomi (via Recovery):

1. Turn off the phone (if it doesn’t respond, wait for the battery to drain).
2. Press the Power button + Volume up for 10-15 seconds.
3. From the Recovery menu, select Wipe Data → Wipe All Data.
4. Confirm the action and wait for the reboot.

💡

If after resetting the phone requires entering an account Mi (FRP-lock, use the official Mi Unlock Tool (requires a linked account).

⚠️ Attention: On Xiaomi models 12/13/14 With a blocked bootloader, a reset via Recovery can result in a blink (completely inoperable).If the phone is purchased in China or from an unofficial seller, first check the bootloader status via the command: fastboot oem device-info (must be Device unlocked: true).

5. Phone flashing: when necessary

If the reset didn't work, the last option is to flash it.

• 🔄 "Bricked phone (not turned on, flashes red).
• 🐛 Critical errors MIUI post-refresh.
• 🔓 Unlocking the bootloader for installing custom firmware.

The official way (via Mi Flash Tool):

1. Download the Mi Flash Tool from the official website.
2. Choose a firmware for your model (for example, fastboot_ingres_global_images_14.0.5.0.TMBMIXM_20260315.0000.00_13.0_global For the Redmi Note 12 Pro+).
3. Connect your phone in Fastboot mode (clip Power + Volume down).
4. In the Mi Flash Tool, select Clean All and press Flash.

Important: Fastboot removes all data, including photos and messages. If the phone turns on, back up first through Settings. → Additionally. → Backup.

💡

Fastboot flashing is the only way to restore the "bricked" Xiaomi, but requires an unlocked bootloader.On new models (2023)+) Unlocking takes up to 720 hours of waiting time!

6. Network and communication errors: Wi-Fi, mobile internet, Bluetooth

Communication issues are one of the most common complaints Xiaomi owners have, and let's look at typical scenarios.

6.1. The mobile internet is not working (4G/5G)

Reasons:

• 📶 Wrong settings APN.
• 🔄 Failure in the communication module.
• 📱 Incompatibility with the operator (relevant for Chinese versions).

Decision:

1. Check the settings. APN: Settings → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN) (for MTS: name - Internet.mts.ru, APN — internet.mts.ru).
2. Switch the network mode to Only LTE:
3. Reset network settings: Settings → Memory. → Resetting settings → Resetting network settings

6.2. Wi-Fi problems (not connected, slow speed)

If Wi-Fi is connected but not working:

• 🔄 Restart router and phone.
• 🔒 Check if the restriction is worth the MAC-router address.
• 📡 Change the Wi-Fi channel on the router (for example, from the car to 6 or 11).

If Wi-Fi is not turned on at all:

1. Reset your network settings (see above).
2. Check the module's performance through the test: ##4636## → Wi-Fi information (if Wi-Fi status: Disabled).

6.3. Bluetooth does not find the device or shuts down

Quick fix:

• 🔄 Restart your phone and device (such as headphones).
• 🗑️ Clear the Bluetooth cache: Settings → Annexes → Application management → Bluetooth → Clear the cache
• 🔒 Remove all paired devices and reconnect.

If the problem persists, check the Bluetooth version for the phone’s specs. For example, the Redmi Note 11 supports Bluetooth 5.2, and older headphones can only work with 4.2.

7. When to contact the service center

Not all errors can be corrected by yourself. Please contact the service if:

• 🔥 Phone overheats to 60°C+ In simple (check through the AIDA64).
• 💧 Moisture is in the air (even if the phone is working, corrosion can occur later).
• 🔋 The battery swelled (seen on a raised screen or clicks when pressed).
• 📱 After a fall, the camera, speaker or microphone does not work.

How to choose a service center:

• 🔍 Check reviews on Yandex.Maps or 2GIS.
• 🛡️ Give preference to official Xiaomi partners (list on the site).
• 💰 Check the cost of diagnosis (average 500-1000) ₽).

Average repair prices (Moscow, 2026):

⚠️ Warning: If the phone is warranty (usually 12 months), do not disassemble it yourself - this will void the warranty.

FAQ: Answers to Frequent Questions