How to Clean Xiaomi Redmi 7: From Cache to Deep Optimization

Why Redmi 7 is starting to brake and how to fix it

Your Xiaomi Redmi 7 is slower, apps are open for a long time, and memory is filled with no one knows what? These are typical symptoms of a clogged system. Even with 2/3 GB of RAM and 32/64 GB of memory, the device overgrows with garbage: residual application files, cache, duplicate photos and unnecessary updates. The main mistake users make is to ignore the problem until the smartphone starts spontaneously restarting or give an error "lack of memory".

Unlike flagships, Xiaomi’s budget models require more frequent cleaning. The manufacturer has saved on hardware: the Snapdragon 632 processor and eMMC 5.1 memory are initially slower than the top devices. But the good news is that 80% of problems are solved by software cleaning without disassembling the phone. In this article, proven ways from surface cleaning to deep optimization, including hidden MIUI settings, which are not mentioned even in the official documentation.

Preparation: What to do before cleaning

Before you delete files, follow 3 critical steps: skipping them can cause you to lose contacts, photos, or even lock your device.

• 📱 Sync your contacts with Google Account: Go to Settings → Google accounts → Synchronize and enable contact options.
• 📸 Save photos in Google Photos or on PC. Use original quality if you plan to delete files from your phone.
• 🔑 Write down your Wi-Fi and app passwords, and you'll have to re-enter them after you reset them, and that's what Google Password Manager or handwritten list would do.
• 📡 Check it out. IMEI. Type *#06# and take a picture of the screen, which will help restore the network if the connection disappears after cleaning.

The second stage is diagnostics. Install the AIDA64 app (free on Google Play) and check:

1. Place occupied in the section Warehouse → Internal memory.
2. The temperature of the processor in the Sensors (normal to 40 ° C in simple).
3. Battery condition in the battery (if the capacity is below 80%, cleaning will not help - you need a replacement).

⚠️ Attention: If in AIDA64 It displays a "System partition full" warning, which means that the system memory is clogged, in which case a simple cleaning will not help - you will need to manually remove updates (for this in the section on deep cleaning).

Basic cleaning: remove garbage manually

Start with the simplest thing: delete unnecessary files and cache, a method that doesn't require root rights and is suitable even for beginners. Open the standard Cleanup app and follow the instructions:

1. Press Deep Cleanse → wait for analysis.
2. In the section Unnecessary files, tick tick: 🗑️ Application cache (safe to remove) 📁 Downloads (check if there are any important documents) 🎵 Audio files (remainders from messengers and games)

Clean up

The standard MIUI utility only removes 30-40% of the garbage. Use SD Maid (free version available on Google Play) for more thorough cleaning.

• 🧹 Residual files after deleting programs
• 🔍 Duplicate photos (shot on Redmi) 7 They are often stored in the gallery and in the folder. DCIM/100MIUI)
• 📂 Empty folders (remain after uninstallation of applications)

Delete the cache in the “Cleaning” appendix"|Check the download folder|Clear the cache of Google Play Services|Remove duplicate photos in SD Maid|Check the folder. /DownloadedRom-->

Cleaning the cache and application data: what can be deleted and what can not

Cache speeds up the software, but it grows to giant sizes over time, like Facebook can use up to 500MB of cache alone, so it can be cleaned without harming the app:

1. Go to Settings → Applications → Application Management.
2. Select an app (e.g. YouTube) → Memory.
3. Click Clear Cache. To completely reset, click Clear Data, but note: this will delete all settings and application files (for example, offline maps in Google Maps).

Pay special attention to these applications – they most often clog up memory:

• 📺 YouTube: Video cache can weigh a few gigabytes. Clean it once a month.
• 💬 Messengers (WhatsApp, Telegram): Media files from chats are stored in a folder /sdcard/WhatsApp/Media. Use the built-in cleaning function in the messenger settings.

⚠️ Warning: Never clear cache and data for system applications with names like com.android.phone (responsible for cellular communication) com.android.providers.telephony (stores network settings) com.miui.securitycenter (security) MIUI) Their discharge can lead to loss IMEI lock-in SIM-map.

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If the app is slower after cleaning the cache, restart the phone and the system will restore the necessary temporary files the next time it starts.

Deep Cleanup: Removing System Garbage and Updates

If the basic techniques didn't work, it's time to dig deeper.Redmi 7 suffers from two hidden problems:

1. Accumulation of MIUI Updates: Each new firmware version is saved in the /cache folder and can weigh up to 2 GB.
2. Residual files from old versions of apps, for example, after updating Google Chrome, the old version remains in memory.

To delete them, you will need access to hidden folders. Use a root-access file manager (such as Root Explorer) or run commands through ADB:

adb shell


su




rm -rf /data/local/tmp/*




rm -rf /cache/*




rm -rf /sdcard/DownloadedRom/*




rm -rf /sdcard/MIUI/debug_log/*

If you do not have root rights, an alternative way is to reset the cache via Recovery Mode:

1. Press Power + Volume up until the Mi logo appears.

Optimizing autoload and background activity

Even after cleaning, Redmi 7 can brake due to apps that are triggered when the phone is turned on.

1. Go to Settings → Applications → Application Management.
2. Select an app (such as Facebook) → Autorun.
3. Turn off the Allow Auto Start option.

Use the Autostarts app (requires root) to turn off mass, which shows which programs are running when:

• 🔋 Charging connections (e.g. Clean Master)
• 📶 Connecting to Wi-Fi (Google Play Updates)
• 🔄 Reboot the device (messengers, games)

Also limit background activity:

1. In Settings → Battery and Performance → Battery Management, select Applications Choice.
2. For unnecessary programs (such as AliExpress), set the Background activity limit to Limit.

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Turning off autoboot for 10-15 unnecessary applications can increase battery life by 15-20% and speed up system startup by 30%.

Cleaning with MIUI Optimization: Hidden Functions

Xiaomi hides some of the cleaning tools in the engineering menu to access them:

1. Open the Phone app and dial the code: ##4636###.
2. Select Battery Information → click on the three dots in the upper right corner.
3. Turn on MIUI Optimization (if it is not available, it is already active).

Now a new section Additional → Optimization will appear in the settings. Here you can:

• 🔄 Reset your graphics settings (useful if the games are lagging)
• 🗑️ Clear Dalvik cache (accelerate application launches)
• 📉 Disable interface animation (makes menus faster)

For a complete reset of graphical settings, run the command in ADB:

adb shell settings put global hidden_api_policy 1

⚠️ Warning: After resetting the Dalvik cache, the first turn on of the phone will take 5-10 Don't interrupt the process even if the screen isn't responding, that's okay.

What to do if nothing helps: extreme measures

If Redmi 7 continues to slow down after all the manipulations, there are two radical methods:

1. Reset to factory settings (Hard Reset): Save all data (see Preparation section). Go to Settings → About phone → Reset. Select Erase all data and confirm.

This will remove all apps, photos and settings, but will return the phone to a clean state.

Fastboot

If the reset didn't help, the firmware may have been damaged. Download the official MIUI version for Redmi 7 (codenamed onc) from en.miui.com and run through the Mi Flash Tool.

1.Install Xiaomi USB Drivers drivers


2 Unpack the firmware in a folder without Cyrillic




3. Launch the Mi Flash Tool, connect the phone in Fastboot mode (clamp Power + Volume down)




4. Select the firmware folder and press Flash

After flashing:

• ⚡ Do not restore data from backup – it will bring back the garbage.
• 🔒 Turn off automatic updates MIUI In Settings → The phone. → Updating the system → Three points. → Settings → Auto-update.
• 📵 Install only the necessary applications. Each new software is a potential source of garbage.

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Fastboot flashing is the only way to bring the redmi 7 back to life, but it erases all data, including IMEI, if you don't back up it with QCN.

FAQ: Answers to Frequent Questions