How to Clean Memory on Xiaomi Mi 9 Lite: A Complete Guide with Instructions and Tips

Xiaomi Mi 9 Lite (also known as CC9 in China) is a popular smartphone with 64 or 128 GB of internal memory, but even this amount becomes scarce over time. High-resolution photos, app cache, system updates and junk files gradually eat up the free space, and the user is faced with a notification “Not enough memory”. In this article, we will analyze 7 proven cleaning methods, including hidden MIUI functions, and also explain how to prevent refilling the drive.

The Mi 9 Lite feature is that there is no memory card slot (in most regions), so cleaning the internal storage becomes a critical task. We will not limit ourselves to basic tips like “remove unnecessary photos”, but dive into technical nuances, from analyzing occupied space to working with ADB for power users. All methods are tested on current versions of MIUI 12-14 (Android 10-12).

1. Analysis of occupied memory: what exactly takes place?

Before you clean up a memory, you need to know which files fill it up. MIUI has a built-in analysis tool, but it often hides details. Here's how to get the full picture:

Open Settings → About Phone → Memory. Here you will see a diagram of categories: Apps, Images, Video, etc. But this data is superficial.

• 📊 Use third-party utilities: Files by Google, SD Maid or DiskUsage (shows files as an interactive map).
• 🔍 Check the folder. /storage/emulated/0/MIUI — Temporary update files and logs are often accumulated here.
• 📁 Go to Settings. → Annexes → App management and sort by size. You'll be surprised how much messengers weigh!

An important nuance for the Mi 9 Lite: the system reserves up to 6-8 GB for “Other” – these are MIUI service files that can not be deleted without root rights. If in this category more than 10 GB – most likely, a folder with a cache of updates (/cache) or logs (/data/log) is clogged.

2. Cleaning the application cache and system

Cache speeds up the software, but eventually becomes a junk dump, and on the Mi 9 Lite, it can be cleaned in three ways:

1. Through MIUI settings: Go to Settings → Apps → App Management. Select an app (like Facebook or Instagram) → Storage → Clear the cache. For mass cleaning: Settings → Memory → Clear the cache (button at the bottom of the screen).
2. With Safe Mode: Press the power button → hold “Switch off” → you will be prompted to switch to Safe Mode. In this mode, only system applications work, which allows you to clear the cache of third-party programs without interference.
3. Through Recovery: Suitable for cleaning the system cache. Turn off the phone → pinch Power + Volume up → select Wipe Cache Partition. Not to be confused with Wipe Data!

⚠️ Cache cleaning does not delete application data (saved games, chats, settings), but it can temporarily slow down programs on the first run after cleaning. If there is no additional space after the procedure, the problem is not in the cache, but in the application files themselves (see section 4).

3. manually delete unnecessary files

Many users are unaware that the Mi 9 Lite is accumulating gigabytes of “invisible” files.

To access these folders, use the built-in file manager (Files) or third-party applications like Solid Explorer.

• 🚫 /system — System files (will cause a crash) MIUI).
• 🚫 /data — User data (requires root).
• 🚫 /vendor — kernel drivers and modules.

💡

If you're not sure if you can delete a file, rename it (add.old at the end). If nothing breaks after a day or two, delete it safely.

4. Application optimization: what can be removed without consequences?

The Mi 9 Lite has a lot of system applications that can’t be removed by standard methods, but can be disabled or replaced:

• 📱 Duplicate annexes: Camera MIUI + Google Camera, Gallery + Google Photo.
• 🎵 Music services: Mi Music, Wynk Music (if not used).
• 📰 News widgets: Mi Browser, News (consume memory under the cache of news).

To disable system applications:

1. Go to Settings → Applications → Application Management.
2. Click on the three dots in the upper right corner → Show all the processes.
3. Select the unnecessary application → Disable (if the button is inactive – ADB is required).

⚠️ Note: Disabling some system applications (e.g. com.xiaomi.mipicks) may disrupt the themes MIUI Check the name of the package online before you turn it off.

5. Transfer data to the cloud or PC

If you are missing memory and don’t want to delete anything, transfer your files to the cloud or computer. The following services are relevant for the Mi 9 Lite:

• ☁️ Google Photos: Automatically upload photos/video in High Quality (unlimited storage). Select Settings in Settings → Backup and synchronization.
• 🖥️ Mi Cloud: 5GB free, but only syncs contacts, notes and some settings.
• 🔌 Local storage: Connect your phone to your PC USB (Select File Transfer Mode and copy the data to the hard drive.

To automate the transfer, use:

• 🤖 Automate (scripting app): for example, set up to automatically send screenshots to Google Drive.
• 📤 FolderSync: syncs selected folders with clouds on schedule.

💡

Moving files to the cloud doesn’t free up space on your phone unless you enable the “Free up space” option in Google Photos or manually delete the originals.

6. Factory reset: when is it necessary?

If all previous methods didn't work, and there's less than 10 percent free space, it's time to consider a hard reset, which will delete all data, including apps, settings and files, but return the phone to a "clean" state. On the Mi 9 Lite, the reset is done in two ways:

Method 1. Through settings:

1. Settings → About the phone → Resetting settings.
2. Choose to erase all data.
3. Enter your password (if installed) and confirm.

Method 2. Through Recovery:

1. Turn off the phone.
2. Press Power + Volume up until the Mi logo appears.
3. Select Wipe Data → Wipe All Data (Change Volume Buttons).

⚠️ Warning: After resetting the Mi 9 Lite can “hang” on the logo MI 5-10 minutes is fine. Don't interrupt! If the phone doesn't boot for more than 20 minutes, reset or run the system through Fastboot.

Before discharge, it is mandatory:

• 🔄 Make a backup copy through Settings → Additionally. → Backup and reset.
• 📋 Save the list of installed apps (use App Backup & Restore).
• 📎 Export. SMS and call log (appendix) SMS Backup & Restore).

7 Advanced Methods: ADB and root access

For high-end users willing to take the risk, there are ways to clean up memory with ADB (Android Debug Bridge) or root rights, which allow you to remove system applications completely, not just disable them.

Cleaning through ADB:

1. Install Minimal ADB and Fastboot on PC.
2. Connect your phone to your computer and allow debugging over USB (Settings → About Phone → MIUI Version → 7 times click to activate Developer Mode → Return to Additional → For Developers → Debugging over USB).
3. Enter in the command line: adb shell pm list packages -f | find "mi packet" (replace mi packet with part of the name of the unnecessary application, for example miui.analytics).
4. Delete the packet by command: adb shell pm uninstall -k --user 0 name.packet

Risks:

• 💥 Removing critical packets (e.g. com.miui.home) will result in a bootloop (cyclical reboot).
• 🔧 Certain functions MIUI (Themes, widgets, will stop working.

💡

Before removing the package through ADB, check it out on the XDA Developers website – there are lists of secure system apps for every Xiaomi model to remove.

FAQ: Frequent questions about cleaning up memory on Mi 9 Lite