What to do if Xiaomi is lagging: a complete guide to accelerating

The situation when the once-fast smartphone starts to work slowly, familiar to every owner of Xiaomi equipment: sudden delays when opening applications, jerks in the interface or a long response to touch can spoil the experience of using even a flagship device. Most often, the problem lies not in hardware failure, but in software failures or improper operation of the system. MIUI.

Owners often find that after updating the firmware or installing heavy games, the device begins to slow down, which is due to the fact that the MIUI shell is quite demanding for resources, and over time, digital debris accumulates in the system. Understanding the causes of lags is the first step to restore the previous speed of your gadget.

Don’t panic and take your device to the service center, and in most cases, you can fix your problems by using built-in optimization tools or by doing a few simple cleaning steps, and we’ll go into detail below to help restore your smartphone to its former speed.

Analysis of the causes of slowing down of the system

The first thing to do is to understand what is causing the workload on the processor, often because of background processes or overcrowded RAM, and the MIUI-based Android system tends to accumulate temporary files that eventually start to conflict with each other.

One common reason is a lack of free space in internal memory: when more than 90% of storage is full, the speed of reading and writing data decreases, which leads to visible delays, and it is worth considering that some applications may not work correctly after updates, creating a hidden load on the CPU.

And also, performance is affected by overheating, and if the device gets hot, trottling, which is an artificial reduction in the processor frequency to protect the components, is a standard protection, but it makes the interface sluggish.

• 📉 Overflow of application and system services cache.
• 📉 Lack of free internal memory (less than 5 GB).
• 📉 Resource-intensive widgets on the desktop.
• 📉 Outdated version of firmware or beta version of software.

⚠️ Note: Installing applications from unknown sources can lead to infection of the system by miners who quietly load the processor.

Cleaning memory and cache through standard means

The easiest way to speed things up is to use the built-in Security app, which is pre-installed on all Xiaomi devices and allows you to quickly free up resources. Click on Cleanup to delete temporary files that often take up gigabytes of space.

In addition to cleaning it quickly, it's important to manually check the Memory section in your settings, and you can see which apps take up the most space, and often the cache of messengers like Telegram or Viber grows to enormous sizes, eating up useful space.

For deep cleaning, it is recommended to use the "Extended Cleanup" feature in the same security application.It finds apk installation files, large unused files and duplicate photos.

Regularly doing these things helps keep the system on track, but if the lags return immediately after cleaning, the problem may be deeper.

Optimizing MIUI settings to improve speed

MIUI is famous for its visuals that look beautiful but consume resources. Disabling or zooming out animations can visually speed up the interface, and you need to activate the developer mode by clicking on the build number several times in the About Phone section.

In the developer menu, find the "Scale of window animation," "Scale of transition animation," and "Duration of animation." Set 0.5x or turn them off completely, making the transitions between screens instantaneous.

It’s also worth turning off the memory extension feature if you have a fast UFS 3.1 storage installed, as slow-flash virtual memory can sometimes run slower than physical RAM.

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Disabling animations not only speeds up the response, but also visually makes the interface more responsive, creating the illusion of a more powerful hardware.

Managing Autoboot and Background Processes

Many apps tend to start right after the phone is turned on and continue to run in the background, consuming battery power and CPU resources. MIUI has a powerful tool to control this process. Go to settings, select Apps, and find AutoStart.

Turn off auto-runs for all programs you don't need all the time, whether it's delivery services, marketplaces, or games, and keep only messengers and alarms active.

You should also check the battery settings for each heavy application. Set the No Limits mode only for those programs that need to be notified instantly. For others, select Energy Saving.

• 🛑 Turn off auto-start for social media.
• 🛑 Limit background activities of maps and navigators.
• 🛑 Check the list of running services in developer mode.

⚠️ Note: Do not disable system processes with English names if you are not sure of their purpose, this can lead to unstable work.

Update firmware and reset to factory settings

If the software methods didn't help, there may have been some critical file errors in the system. Check for updates in the About Phone section. Xiaomi developers regularly release patches that fix performance bugs.

A radical but effective method is a complete data reset. Before you do that, make sure to back up important information to the Mi Cloud or your computer, and reset the phone back to the box by removing all the accumulated debris.

To enter Recovery mode, turn off the device and press the Volume Up + Power button combination. From the menu, select Wipe Data and confirm the action.

Sequence for discharge:


1. Turn off the phone.




2. Clutch Volume Up + Nutrition.




3. Select Wipe Data -> Wipe All Data.




4.Confirm and wait for the reboot.

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Full data reset eliminates 95% of software lag caused by file conflicts and update errors.

Frequently Asked Questions (FAQ)