Why the screen is slowing down on Xiaomi Redmi: a full analysis of the causes and solutions

You pick up your Xiaomi Redmi, you try to open an app or just flip through the tape, and the screen is frozen: the reaction to touch is delayed, animations twitch, and sometimes the picture freezes for a few seconds. Is the situation familiar? Screen braking on Redmi smartphones (be it the budget Redmi 9A or the flagship Redmi K60 Pro) is one of the most common complaints of users. And the reasons here can be in software failures and hardware malfunctions.

In this article, we will not just list the possible culprits of lags, but will analyze them into three key categories:

1. Software failures (MIUI, background processes, viruses).
2. Hardware problems (display, plume, battery).
3. External factors (overheating, mechanical damage).

Each item is accompanied by step-by-step diagnostic and elimination instructions, from a basic reboot to replacement parts, and at the end, you will find an FAQ with answers to the most frequent questions about specific Redmi models.

1 System overload: Why MIUI is "strangling" your Redmi

Xiaomi’s MIUI shell is famous for its functionality, but not always for optimization, especially on low-end Redmi models (like the Redmi 8A or Redmi 9C), where a weak processor has to pull heavy firmware.

• 📱 The screen hangs when the camera or gallery is opened.
• 🔄 Animations flash or “break” when switching between applications.
• ⏳ Delayed response to touch (up to 1-2 seconds).
• 🔋 Fast battery discharge against the background of brakes (background signal).

The first thing you need to do is diagnose the system load.

1. Open Settings → About Phone → MIUI version and tap 7 times on the “Kerole” line (developer mode will turn on).
2. Back to Settings → Additionally. → For developers.
3. Find the item “Process Statistics” (or “Using CPUs”).

If you see applications that consume >30% of CPU, you have to force them to stop or remove them.

• 🎮 Games (PUBG Mobile, Genshin Impact - even in the background!)
• 📸 Photo/video processing applications (CapCut, Lightroom).
• 🔍 Antiviruses and cleaners (Clean Master, 360 Security – often cause lags themselves).

⚠️ Warning: If you see com.android.systemui with a load of >50% in the process statistics, it's a sign of a critical failure MIUI.

2.Background processes and autoboot: how they steal performance

MIUI is known for its aggressive autoboot policy: many apps start when you start, even if you don’t use them. Mi Video, Mi Music or GetApps can hang in the background, consuming RAM and slowing the interface.

To turn off autoboot:

1. Go to Settings → Applications → Application Management.
2. Slip on the three dots in the upper right corner and select "Stop."
3. Turn off autoload for all unnecessary applications (especially messengers and social networks).

Also check the permissions for applications:

• 📍 Geolocation: Disable it for applications that don’t need it (e.g., File Manager).
• 🔔 Notifications: Excessive push notifications cause the system to constantly wake up, which slows down the screen.
• 🔄 Background activity: In the same application settings, limit background work for underutilized programs.

If the brakes are still there, the problem is deeper, and it may be the fault of Google’s services (especially on older Redmi models with 2-3 GB of RAM).

1. Open Settings → Accounts → Google.
2. Delete your account (the data is synchronized when you re-enter).
3. Reboot your phone and add your account again.

3. Viruses and malware: hidden brakes

Yes, even Xiaomi Redmi can catch a virus - especially if you install APK- files from unverified sources.

• 🛡️ There are pop-up advertising windows even in the lock screen.
• 📥 Unknown apps appear in the menu (e.g. com.android.fake).
• 🔋 The battery is discharged in a few hours without active use.
• 🐢 The screen slows down when connecting to Wi-Fi or mobile data (the virus can drain traffic).

How to check and clean your phone:

1. Delete suspicious apps: Go to Settings → Apps and sort by installation date. Delete anything that has been installed without your knowledge.
2. Use the built-in scanner: MIUI has its own protection – Security → Virus scanner.
3. Install a reliable antivirus: Malwarebytes or Bitdefender (but not cleaners like Clean Master!).

⚠️ Warning: If the virus blocks antivirus installation or access to settings, reset to factory settings via Recovery mode. Turn off the phone, press Power button + Volume up, select "Wipe Data" and confirm.

Hardware problems: when the "iron" is to blame

If the software methods didn't work, it's time to think about the physical malfunctions. Here are the most common hardware causes of screen brakes on Redmi:

How to diagnose hardware problems yourself:

1. Check the plume: Carefully tap the bottom of the screen (where the plume connects to the board). If you press the artifacts disappear / appear, the plume is to blame.
2. Battery test: Install the AccuBattery app and check "Battery Health." If <80%, it's time to change.
3. Temperature monitoring: Use CPU Monitor or AIDA64. If the CPU temperature is >60°C in plain, clean up.

If you suspect a problem with the iron, but you're not sure, try flashing your phone with clean firmware through the Fastboot. If the brakes are still there, the hardware is to blame.

5.Overheating: Why Redmi 'suffocates' and how to avoid it

Xiaomi Redmi (especially models with Snapdragon 7xx/8xx processors) are prone to overheating.

• 🔥 Games and heavy apps: Genshin Impact or Call of Duty Mobile heats up the chip to 70–80°C.
• ☀️ Direct sunlight: Even 5 minutes in the sun can cause trottling (automatic performance decline).
• 🔌 Fast Charging: When using charging >30W the phone warms and brakes.
• 🧹 Clogging of connectors: Dust in the speaker or connector USB blocks the heat sink.

How to prevent overheating:

1. Limit your performance in games: In Settings → Special Features → Optimize games, select Balanced or Energy Saving mode.
2. Use heat sink cases: For example, aluminum case for Redmi K50 or Redmi Note 12 Pro+.
3. Clean the connectors: Gently blow the Type-C connector and speakers with compressed air (do not use metal objects!).
4. Turn off fast charging: In Settings → Battery → Charging settings, select “Normal Charging”.

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If the phone overheats, don't put it in the fridge! A sudden temperature drop can damage the battery. Instead, turn it off for 10 to 15 minutes and let it cool at room temperature.

6. failures after the MIUI update: what to do if the lags appeared after the update

MIUI updates often bring not only new features, but also bugs.

• 🔄 The screen is freed when unlocked.
• 📱 Animations became twitchy (especially on Redmi 9/10 with 4GB of RAM).
• 🔋 The battery goes down faster and the phone warms up for no reason.

Decisions:

1. Update rollback: If the lags appeared immediately after the update, try rolling back: Settings → About Phone → System Update → Three points at the top → Select the service pack → Delete the latest update
2. Cache Reset: Go to Settings → Memory → Clear the cache (not to be confused with a full reset!).
3. Manual firmware: Download the stable version of MIUI for your model from en.miui.com and run through Recovery.

⚠️ Warning: If the screen only slows down in specific applications (e.g., TikTock or Instagram) after the update, the problem may be that the MIUI version is not compatible with these programs.

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Before you run through Recovery, make sure to back up your data! Use Settings → Additional → Backup and Reset → Local Backup.

7. Mechanical damage: cracks, moisture and falls

Even if the Redmi screen didn't crash after the fall, the internal damage could have gone unnoticed.

• 💧 Moisture intake: The screen brakes after contact with water, there are "divorces" under the glass.
• 🔧 Cracks in the case: Even microcracks can press on the plume or board.
• 📉 Deterioration after repair: If the screen started to brake after changing the display, it is possible that the master damaged the plume or improperly connected connectors.

What to do:

1. Check for moisture: Light up the flashlight on the display at an angle -- if you see any swelling, moisture has penetrated the screen. Turn off your phone immediately and call the service!
2. Diagnostics after a fall: If the phone falls, check: Does the screen react to touching at the edges (there are plumes); Is there a backlash between the body and the display; Is the vibrator working (if not, the connector may have departed).

If mechanical damage is confirmed, do not try to repair yourself. 90In the percentage of cases, this leads to an aggravation of the problem. Contact the authorized Xiaomi service (list on the website). mi.com/service).

FAQ: Answers to Frequent Questions on Screen Brakes on Redmi