Xiaomi slows down and lags: what to do to return the speed of work

Your Xiaomi is suddenly hanging, apps open for 10 seconds, animations twitch like a slideshow? That doesn't always mean it's time to throw it away. 80 percent of the time, the brakes are caused by software problems that you can solve yourself -- without going to the service center and spending money.

Xiaomi smartphones (especially the budget Redmi and POCO series) often suffer from overloaded MIUI, background processes and unoptimized updates. But even flagship models like the Xiaomi 13 Ultra or Mix Fold 3 can start to “glut” after a year of active use. In this article, we will examine all possible causes of brakes — from trivial memory shortages to hidden viruses — and give step-by-step instructions for eliminating them.

Important: if the phone is not just slowing down, but spontaneously reboots, warms up to 50 ° C in a simple or turns off at 20% charge, the problem is more hardware (wear-out battery, memory chip dump). In such cases, it is better to immediately contact the service. All other symptoms (long load, friezes, slow interface) are treated programmatically.

1.Diagnostics: Why did Xiaomi start laying?

Before you start "treatment", you need to understand what exactly causes the brakes, here are the key symptoms and their possible causes:

• 📱 Interface. MIUI hung (swipe delays, slow animations) → overloaded shell, little RAM, failures in the launcher.
• 🐢 Applications are long to open or fly out → lack of free space, damaged cache data, software version conflict.
• 🔋 The brakes appear when the battery charge is low (below). 15-20%) → battery wear, activated energy saving mode.
• 🌡️ The phone is warming and slowing down. → background processes (mining, viruses), processor malfunction, thermopaste dried.
• 📶 Lags when connecting to a mobile network/Wi-Fi → Problems with the communication module, outdated modem drivers.

To narrow down the range of problems, perform a quick check:

1. Open Settings → About Phone → MIUI version and check the relevance of the firmware.
2. Run Settings. → Memory. → Memory analysis – if less than 10% is free, it is critical.
3. Install the CPU Monitor app (from Google Play) and watch the CPU boot to idle. If it exceeds 20% without active tasks, there is a parasite in the system.

2. Cleaning the system: remove garbage and cache

The most common reason for brakes is memory clogs. MIUI is known for actively cacheing data, but rarely cleaning it automatically. If you've never cleared the cache, you can accumulate up to 5-10 GB of unnecessary files in a year or two.

How to clean:

• 🧹 Cleaning the app cache: Go to Settings → Annexes → App management. Select an app (start with frequently used: Chrome, Facebook, Instagram). Click Storage → Clear the cache. ⚠️ Warning: Do not clear data (Clear all data) – this will delete logins and settings!
• 🗑️ Remove Unnecessary Files: Open the Built-in Cleanup (or Security) app → Cleaner. Run Deep Cleanup and remove garbage, duplicate photos, large files.

Optimizing storage

1. Move your photos/video to the cloud (Google Photos, Mi Cloud).
2. Remove unused apps (especially games – they take up to 2-3 GB each).

If you have brakes left after cleaning, move on to the next step: if the phone started to work faster, but after a day or two it started to lay again - a problem in the background processes (see section 4).

3. Resetting to factory settings: when is it needed?

Hard Reset is a radical but effective method if:

• 🔄 The phone is slowing down after the update MIUI.
• 🦠 Suspected virus (unknown applications, advertising in the status bar).
• 📉 Productivity has fallen for no apparent reason.

⚠️ Note: If the phone is turned off when 30-40% In this case, the replacement of the battery may not help - you will need to repair the board (from the mains). 5000 ₽).

6.Flashlashing: When a MIUI update hurts

Sometimes the brakes appear after the MIUI update.

• 🐞 Bugami in the new firmware version (especially relevant for Global Stable on budget models).
• 📦 Incomplete Update installation (files damaged).
• 🔄 Conflict with user settings.

Decisions:

• 🔄 Retraction to the previous version MIUI: Download the old firmware from the Xiaomi Firmware Updater (select Stable for your model). → The phone. → Updating the system → Three points. → Select the firmware file. Confirm the installation and wait for the restart.

Clean installation via Fastboot

1. Download Mi Flash Tool and Fastboot firmware for your model.
2. Connect your phone in Fastboot mode (clip Power + Volume down).
3. In the Mi Flash Tool, select Clean All and press Flash.
4. 💰 Buying and selling a new phone: If it costs 50%+ And the best alternatives for the new smartphone are the Redmi Note 13 Pro in 2026.+ (25,000 ₽) — Better balance of price and productivity. POCO F6 Pro (from 30,000) ₽) — Snapdragon 8 processor+ Gen 1. Xiaomi 14. (from 50,000) ₽) — flagship with support for updates for 4 years.

💡

Before selling the old Xiaomi, make sure to complete a full reset and untie your Mi Account (Settings → Xiaomi Account → Sign out). Otherwise, the new owner will not be able to use the phone (it will be blocked due to the link to your account).

FAQ: Frequent questions about Xiaomi brakes