How to return the smartphone Xiaomi “second wind”: from reset to hidden settings

Your Xiaomi is slowing down, running out, or acting like a pensioner after a year of use? Don't rush to buy a new device — in 90% of cases, the phone can be returned to a factory state without losing data or with minimal casualties. This article is not about a banal reset to factory settings (albeit this one too), but about an integrated approach: from cleaning the system to hidden MIUI functions, which the manufacturer does not advertise.

We'll take a look at the methods that work on all modern models, from the budget Redmi Note 12 to the flagship Xiaomi 14 Ultra. Importantly, some methods require root rights or unlock the bootloader, but most solutions are available even to a beginner. If you're willing to spend 30 to 60 minutes, your smartphone will work faster, hold charge longer and stop "glutting" when updating.

We warn you right away: on models with Snapdragon 8 Gen 2/3 processors (for example, Xiaomi 13T Pro), a reset via Fastboot can lead to IMEI blocking if you do not follow the procedure.

1.Diagnostics: Why the phone is 'ageing' and how to check it

Before you treat, you need to make a diagnosis, brakes and rapid discharge are symptoms, and the causes can be different:

• 📱 Clogged memory: app cache, duplicate photos, junk files from messengers (especially Telegram and WhatsApp).
• 🔋 Degraded battery: after 500 charging cycles, the capacity drops by 20-30%, and the controller begins to “lie” about the percentages.
• 🤖 Background processes: MIUI • Sins by auto-run unnecessary services (for example, com.miui.analytics or com.xiaomi.midrop).
• 🔄 Update curves: Firmware “over the air” is sometimes put with errors, especially if the process is interrupted.

How do you check?

1. Open Settings → About Phone → Battery status. If the charging cycle is > 400, the battery needs to be replaced.
2. Run Security → Scan – the system will show junk files and potentially dangerous applications.
3. Install AccuBattery (from Google Play) - the application will show the real battery capacity and discharge rate.

If you see that you have > 85% of internal storage occupied in Settings → Memory, even a reset may not help, you need to manually clean the /data partition.

2. Deep cleaning: remove debris that is not visible in the settings

MIUI has hidden folders and cache that are not cleaned by standard means.

• 🗑️ Cleaning Dalvik cache: go to Settings → Memory. → Clean, click Deep Clean and select Clear Dalvik Cache.This will remove temporary Android virtual machine files that can weigh up to 1-2GB.
• 📁 Deletion of the folder MIUI at the root of the storage: through any file manager (for example, Solid Explorer) find the folder MIUI — It contains log files and error dumps.
• 🤖 Disabling Unnecessary System Applications: Through Settings → Annexes → Find and disable application management: com.miui.analytics (statistics collection) com.xiaomi.ab (advertising services) com.miui.hybrid (hybrid web applications)

For advanced users: If you're ready to get root access, you can remove system applications entirely using Titanium Backup or SD Maid. But remember: this voids the warranty and can lead to a blink if you do not care.

After cleaning, restart the phone in Safe Mode (press the power button → long tap on "Stop" → "Safe Mode"). If this mode is faster, the problem is with third-party apps.

3. Reset to factory settings: how to do it right

If the cleaning didn't work, it's time to do a hard reset, but there's a nuance here.

The safest way is to reset your settings, but if you suspect that a virus or a crooked update has damaged your system files, you should use Fastboot:

fastboot erase userdata


fastboot erase cache




fastboot reboot

⚠️ Attention: On Xiaomi models 12/13/14 Snapdragon-powered 8 Gen 1/2/3 Fastboot reset can be erased modemst1/2 — file-holders IMEI. Before the procedure, make their backup command: adb pull /dev/block/bootdevice/by-name/modemst1 adb pull /dev/block/bootdevice/by-name/modemst2

Once reset, the phone will turn on as new. But don't rush to recover data from the backup -- first check if the problem has been solved. If the brakes are left, the hardware (for example, degraded flash memory) is to blame.

4. MIUI Optimization: Hidden Settings for Speed

MIUI has hidden features that can be enabled without root rights, which speed up animations, disable unnecessary services, and even overclock the processor in games.

• ⚡ Accelerate animation: Enable developer mode (7 taps by Build Number in About Phone), then in Settings → Additionally. → For developers install: Animation windows → Off or 0.5x Animation of transitions → Off. Process limit → Standard limit
• 🎮 Game Turbo Mode: In Settings → Special facilities → Game Turbo: Enable "Acceleration" GPU» and “Optimization” FPS». It gives. +10-15% of gaming performance.
• 🔄 Disabling background synchronization: in Settings → Accounts and syncs: disable autosynchronization for unnecessary accounts (e.g. Mi Account if you are not using the cloud).

Another lifehack: if you have Xiaomi on the Snapdragon 8+ Gen 1 (like the Redmi K50 Ultra), you can force the processor's performance mode to be turned on.

1. Install Performance Control from Google Play.
2. Select the Extreme Performance profile.
3. Reboot the phone.

This will increase the heat, but it will increase the benchmarks by up to 20%, and for everyday tasks, you will also have to use standard mode.

5. Battery: How to return the capacity and calibrate the controller

If the battery is running out in 3-4 hours and you see a capacity of < 80% in AccuBattery, there are two options:

1. Software calibration (if the controller is a problem): Discharge the phone to 0% and do not turn it on until it shuts down itself. Charge to 100% off (use the original power supply). Repeat 2–3 times.

Battery replacement

Xiaomi

Redmi 9A

Xiaomi 13 Pro

⚠️ Attention: On phones with fast charging support (33W/67W/120W) The calibration can only work with the original charger, and cheap Chinese power supplies trick the controller into showing false percentages.

To extend the life of the battery:

• 🔌 Do not keep your phone charging after 100% (turn off at 80-90%).
• ❄️ Avoid overheating (do not play games on charging).
• 🔄 Every 3 months, do a full discharge/charging cycle.

💡

If after replacing the battery, the phone shows the wrong percentage of charge, reset the battery data in Settings → Battery → Reset battery statistics (root required).

6. firmware update: how to flash your phone without risk

Sometimes the brakes appear after the MIUI update, in which case you can:

1. Reverse to the old version (if you know it worked consistently).
2. Install custom firmware (e.g. Pixel Experience or LineageOS).
3. Flash the official firmware through the Mi Flash Tool (if the phone is “bricked”).

For beginners, the safest way is to update through Settings → Software Update. But if you need to manually flash:

1. Download the firmware for your model from en.miui.com (select Stable, not Developer, if you are not sure).
2. Rename the file to update.zip and put it in the root of the memory.
3. Press Power + Vol Up, select Install update.zip.

⚠️ Note: On phones with a locked bootloader (for example, POCO X5 Pro) Firmware through Recovery can result in E:footer is wrong. In this case, you will need to unlock through Mi Unlock Tool (associating an account to the device takes 7-15 days!).

If the phone doesn’t turn on after firmware (black screen or stuck on the logo), try:

fastboot flash boot boot.img


fastboot flash recovery recovery.img




fastboot reboot

💡

Always check the firmware version before installing! firmware from Redmi Note 11 (codename spes) will not work for the Redmi Note 11 Pro (codename veux), even if the models are similar.

7. Hardware problems: when it's time to bring to the service

If none of these methods worked, the problem may be the iron:

If you decide to take your phone apart on your own, remember:

• Use plastic blades to avoid damaging the plumes.
• Before disassembling, turn off the battery (on most Xiaomi it connects through the connector).
• Take a photo of each step, and it will help you to get your phone back together.

For models with amoledic screens (such as the Xiaomi 12 Pro), be careful: when replacing the display, you may need to transfer the OLED chip from the old screen, otherwise you will have problems with autobrightness.

8.Prevention: How to keep your phone "new" for a long time

To avoid having to repeat all the manipulations in six months, follow the simple rules:

• 📵 Do not install applications from unknown sources (especially hacked games – they often contain miners).
• 🔄 Once a month, clean the cache through Settings. → Memory. → Cleanup.
• 🔋 Use Original Chargers – Cheap Power Units Ruin Battery Controller.
• 📲 Do not keep your phone in the cold or heat (optimal temperature: +10°C. +35°S).
• 🔒 Turn off Bluetooth and Wi-Fi when not in use – this reduces background activity.

If you like experimentation, try custom cores (like FrancoKernel or Kiran Kernel) that optimize power consumption and performance, but require an unlocked bootloader.

And one last tip: if your Xiaomi is older than 3 years, consider replacing it. Even after all the manipulations, the old processors (for example, the Snapdragon 660 in the Redmi Note 7) will not pull up modern applications.

FAQ: Frequent questions