12 Reasons Why Xiaomi Redmi Note 8 is Fixed or Slow

Xiaomi Redmi Note 8

2019

Snapdragon 665

4,000 mAh

hanging

If your Redmi Note 8 is getting jammed, don't blame the manufacturer. 90% of the time, it's software failures, overloaded memory, or the wrong settings; less often, it's hardware, like a worn-out battery, a damaged motherboard, or a faulty memory module. In this article, we'll look at all the possible causes and give you step-by-step solutions, from simple to radical.

Before you start diagnosing, ask yourself, when exactly does it freeze? During games, when the camera opens, after a system update or for no apparent reason?

1. Overload of RAM (RAM)

The Redmi Note 8 is equipped with 4 GB of RAM, which is enough for everyday tasks, but modern applications (especially games and social networks) consume more resources. If 10+ processes are running in the background, the system begins to “brake” and if there is a critical shortage of memory, it completely freezes.

How to check the loading of RAM:

1. Open Settings → About the phone → System status.
2. Click on Memory (or Use of RAM).
3. If it is less than 500 MB free, it is critical.

Decisions:

• 🔄 Close the background apps: Use the “Clear All” button in the multitasking menu (swipe up and hold).
• ⚙️ Turn off autostart: Settings → Annexes → Application management → Auto-start.
• 📱 Use "Light Mode": Settings → Special opportunities → Easy mode (simplifies the interface and reduces the load).
• 🚫 Remove heavy apps like Genshin Impact or games like the PUBG The Redmi Note 8 is not working well.

2. A filled vault

If the internal memory of the smartphone is clogged more than 90%, the system begins to slow down. Redmi Note 8 is available in 64/128 GB variants, but even 128 GB can be quickly filled with photos, videos and app cache. With a lack of space, Android can not create temporary files, which leads to freezes when installing updates or running programs.

How to make room:

• 📸 Transfer your photo/video to a memory card or to the cloud (Google Photos, Mi Cloud).
• 🧹 Clear the cache: Settings → Warehouse → Clear the cache.
• 🗑️ Remove unnecessary APK-files from the Download folder.
• 🔍 Use the built-in “Cleaner”: Security → Cleanup.

The critical memory filling threshold is 85%. If it's less than 5GB free, the smartphone will lag even in simple operations.

💡

Regularly check the DCIM/.thumbnails folder - there are thumbnails of photos that can take up to 1-2 GB of space.

3. Processor overheating

The Snapdragon 665 in the Redmi Note 8 is prone to overheating under intense loads (games, 4K video, prolonged use of the navigator). At temperatures above 60 ° C, the processor automatically reduces performance (trottling), which leads to lags and freezes.

Causes of overheating:

• 🔥 Games with maximum settings (for example, Call of Duty Mobile with high settings) FPS).
• ☀️ Direct sunlight or hot weather.
• 🔋 Charging during games (increases heating).
• 🛠️ Dried thermopaste (relevant for phones older than 3 years).

How to lower the temperature:

1. Remove the cover (especially silicone).
2. Close all apps and let the phone cool for 10-15 minutes.
3. Turn off Wi-Fi/Bluetooth/GPS if they are not in use.
4. Set an FPS limit for games (for example, 30 instead of 60).

4. Battery problems

Capacity battery 4000 MACK IN THE REDMI NOTE 8 calculated 300-500 Charging cycles. 2-3 In the years of use, its capacity drops to 60-70%, resulting:

• ⚡ Sudden shutdowns when 20-30% charge.
• 🐢 Slow-motion (processor limits performance to save energy).
• 🔄 Freeze when connecting charging (power controller fails).

How to check the status of the battery:

1. Enter the dialer code ##4636##.
2. Select Battery Information.
3. Look at the health level (if any) parameter: normally, 100%, if below 80%, it's time to change the battery.

If the battery is swollen (visible on a raised screen or body), immediately turn off the phone and contact the service.

💡

If the phone turns off at 20-30% charge, the battery is to blame. Replacing the battery in the service costs ~ 1500-2500 rubles (2026).

5.Firmware failures MIUI

MIUI (especially version 12-14) is known for bugs that can cause freezes.

• 🔄 Failed update (interrupted or with errors).
• 🐞 Conflict with custom themes/fonts.
• 📱 Failure of the launcher (standard) MIUI Launcher sometimes "hangs»).

How to fix software failures:

1. Reset the launcher settings: Click the empty space on the home screen → Home screen settings → Reset settings.
2. Clear system cache: Settings → Applications → Application management → Three points (menu) → Show system → Find “Settings” and “System UI” → Clear the cache
3. Reverse to the old version of MIUI (if the lags started after the update). To do this, download the firmware from the official Xiaomi website and run through Recovery.

If the crashes happen again, complete the reset (Settings → About Phone → Reset). Important: pre-backup the data!

6. Viruses and malware

Installation of applications from unverified sources (APK-Torrent files) or visiting phishing sites can lead to virus infection:

• 🦠 Advertising on the status line.
• 📱 Spontaneous opening of the browser.
• 🔋 Fast battery discharge.
• 🐢 Hanging up when connecting to the Internet.

How to remove viruses:

1. Install the antivirus (Dr.Web Light, Malwarebytes) and scan the system.
2. Check the list of installed applications: Settings → Apps → Application Management. Delete suspicious ones (such as System Update or Flash Player).
3. Disable installation from unknown sources: Settings → Privacy → Special permissions → Install unknown applications.

💡

If the antivirus does not find threats, but the symptoms remain, reset to factory settings. Viruses can hide in system files.

Hardware malfunctions

If all software methods are tried, but the Redmi Note 8 continues to hang, the problem may lie in the hardware:

It's hard to diagnose hardware problems by yourself.

• 🔌 Not activated after freezing (forced reboot via Power is needed) + Vol Up).
• 📱 Reacts to delayed touches (as if the screen is floating»).
• 🔊 Distortions the sound or does not reproduce it.

→ Go to the service center. Average cost of diagnosis — 500-1000 ruble.

💡

Before visiting the service, back up your data via Settings → Additional → Backup or by connecting your phone to your PC.

8. Memory Card Conflict (MicroSD)

The Redmi Note 8 supports up to 256GB of memory cards, but cheap or damaged microSDs can cause crashes:

• 📁 Freeze when opening files from the card.
• 🔄 Spontaneous reboots when connecting the drive.
• ⚠️ Message «SD-map damaged».

How to check the memory card:

1. Remove the microSD and check if the freezes are gone.
2. Connect the card to your PC and scan for errors (in Windows: Properties → Service → Check).
3. Format the card in FAT32 (on your phone: Settings → Storage → Format).

If the card continues to fail, replace it with an A1/A2 model (such as the SanDisk Ultra or Samsung EVO).

💡

Do not use memory cards larger than 256 GB – Redmi Note 8 does not support exFAT, and the file system may be corrupted.

⚠️ Warning: If the phone freezes while retrieving the microSD, don't do it on the hot. mount the card first in the settings: Storage → Extract SD-map.

What do you do if nothing helps?

If you’ve tried all the methods, but the Redmi Note 8 still slows down, there are some radical measures left:

1. Install custom firmware (like LineageOS or Pixel Experience) that will remove the extra software from Xiaomi and speed up the work.
2. Replace the heat paste (relevant if the phone overheats even in plain) in the service it costs 800-1500 rubles.
3. Think of an upgrade.The Redmi Note 8 is morally obsolete and its performance may not be enough for today's challenges: 📱 Redmi Note 12 (Snapdragon 4 Gen 1, 120 Hz screen). 📱 POCO X5 Pro (Snapdragon 778G, 67W charging).

If you decide to sell an old smartphone, pre-reset and delete all accounts (Settings → Accounts → Delete account).

FAQ: Frequent questions about the Redmi Note 8 freeze