How to Clear Cache on Xiaomi Redmi 9T: A Complete Beginner’s Guide

Xiaomi Redmi 9T will slow down over time, apps will open longer, and memory will run out at the wrong time. 90% of the time, it's not the wear and tear of iron that's the fault of cache -- temporary files that the system and programs accumulate for months -- cleaning up the cache not only helps to free up gigabytes of memory, but also to bring the phone back to speed without drastic measures like factory resets.

In this article, we’ll look at all the available ways to clean up Redmi 9T cache, from standard MIUI tools to hidden features for power users, how to delete the cache of individual applications, clean system temporary files, and even optimize Dalvik cache, which affects the speed of startup programs, and we’ll also explain why some methods can harm a phone if used incorrectly.

Why Redmi 9T cache needs to be cleaned regularly

Cache is not just garbage, it's temporary files that are created to speed up the system and applications, for example, when you open Instagram, it saves thumbnails of photos so that the next time you run them, you can show them instantly.

• 📉 It takes up gigabytes of memory – especially if you actively use social networks, instant messengers or games.
• 🐢 Slow down the phone – the system spends resources on processing outdated data.
• 🔄 Failures – corrupted cache files can lead to crashes of applications.
• 🔍 Violate privacy – there are traces of your activity in the cache (for example, search queries).

On the Redmi 9T with its 64/128GB of memory and Snapdragon 662 processor, the cache is particularly noticeable: the phone starts to “brake” when multitasking, warm up for no reason and discharge faster. Clearing the cache every 1-2 months helps to avoid these problems.

⚠️ Warning: Don't confuse cache with user data! Cache clearing won't delete your photos, messages or saves in games. But if you delete app data (Settings) → Annexes → Warehouse → Clear the data, you will lose all settings and files inside the program.

Method 1: Clearing the cache of individual applications

The safest method is to delete cache only for programs that take up too much space or are unstable. On Redmi 9T, this is done through standard MIUI settings:

1. Open the settings (cog icon on the desktop).
2. Go to the Appendix section → Application management.
3. Select the app you want (like WhatsApp or Google Chrome).
4. Press Warehouse. → Clear the cache.

For convenience, sort the applications by cache size:

• 📊 In the Application Management section, tap on three dots in the upper right corner.
• 🔍 Select Sort by Size → By cache size.
• 🗑️ Remove cache from programs that are larger than 500MB (e.g. TikTok, Facebook, games).

It doesn't require superuser rights and is completely safe, but it doesn't clear the system cache that accumulates in the background.

Social media applications (Instagram, Facebook, VK)|Messengers (WhatsApp, Telegram)|Browser (Chrome, Mi Browser)|Games (PUBG, Genshin Impact)|Streaming services (YouTube, Netflix)-->

Method 2: Automatic cleaning through “Optimization”

MIUI has a built-in Optimization tool that analyzes the system and suggests removing unnecessary files, including cache.This method is suitable for those who do not want to dig into the settings manually.

How to start:

1. Open the Security app (shield icon).
2. Go to the Optimization tab (in the lower menu).
3. Press the check and wait for the analysis to be completed.
4. In the Garbage Files section, select Clean.

The tool will remove:

• 🗑️ Application cache and systems.
• 📁 Temporary download files.
• 🔍 Residual data of remote programs.

The downside of the method: Optimization doesn’t always remove Dalvik cache, which is a special file that the Android virtual machine creates to speed up the launch of applications, and you have to manually clean them (more on this below).

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If your phone is running slower after cleaning, restart it. The first application launch after removing the Dalvik cache may take longer, but then the speed will return to normal.

Method 3: Cleaning Dalvik cache (for power users)

Dalvik cache is an optimized version of the apps that the Android virtual machine creates to run quickly, and over time, these files become fragmented and can even cause an “App is not responding” error on Redmi 9T. Clearing the Dalvik cache requires access to Recovery Mode.

Instructions:

1. Turn off the phone.
2. Press the Power button + Volume up and hold for 10 seconds until the MI logo appears.
3. From the Recovery menu, select Wipe & Reset → Wipe Cache.
4. Confirm the action and wait for the completion.
5. Restart the phone (Reboot).

After this procedure, the first application launch will take longer, but then they will open faster. Importantly, do not confuse Wipe Cache with Wipe Data - the latter will reset the phone to factory settings!

⚠️ Attention: If after cleaning the Dalvik cache, the phone is stuck on the screensaver MI longer than 10 minutes, don't panic. Wait for full load (may take up to 20 minutes.

Method 4: Using a file manager for manual cleaning

If standard methods don’t work, you can manually delete the cache through the file manager, and Redmi 9T will do this with the standard Files or Root Explorer application (if you have root rights).

The path to the app cache:

/storage/emulated/0/Android/data/<name packet appendix>/cache/


/data/data/<name packet application>/cache/ (requires root)

To find the folders with the largest cache:

1. Open Files → Categories → Large files.
2. Filter by folder called cache.
3. Delete the contents of the folders (not the folders themselves!).

Be careful: deleting files from /data/data/ without root permissions can cause failures. It is better to use this method only for folders in /storage/emulated/0/.

Method 5: Cache reset via ADB (for advanced)

If the phone is slowing down a lot and standard methods don't work, you can use ADB (Android Debug Bridge), a tool for debugging through the computer, which will remove all the cache of the system, including hidden files that are not cleared through the menu.

Instructions:

1. Install. ADB-PC drivers.
2. Turn on USB Debugging on Redmi 9T (Settings → About Phone → MIUI Version → 7 times tap the version number → Return to Settings → Additional → For Developers → Debugging on USB).

This method requires root rights and is designed for power users, and without superuser rights, teams will not work.

⚠️ Attention: Misuse of the right ADB If you are not sure about your actions, use safer methods (1-3).

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Cleaning the cache through ADB is the most radical method, but it deletes even temporary files that are not visible through standard MIUI tools.

What to do if after cleaning the cache, the phone began to work worse

In rare cases, after cleaning (especially Dalvik cache or through ADB), Redmi 9T can:

• 🐢 Remaining at the first launch of applications.
• 🔄 spontaneously reboot.
• 📵 Losing connection to the mobile network.

This is normal and it's because it takes time for the system to reassemble the cache, so it can speed up the process.

1. Reboot your phone 2-3 times.
2. Do not run all applications at once – let the system recover the cache gradually.
3. If the problems do not disappear after 24 hours, reset the network settings (Settings) → SIM-maps and mobile networks → Resetting network settings).

If your phone has stopped turning on after cleaning through Recovery or ADB, try:

1. Press Power + Volume up for 15 seconds for forced reboot.
2. If it doesn’t help, flash your phone through Fastboot (instructions on the official Xiaomi website).

FAQ: Frequent questions about cleaning up cache on Redmi 9T