How to Optimize Xiaomi Redmi 7A: A Complete Overclocking and Cleanup Guide

Xiaomi Redmi 7A

It's not because of a weak processor.

In this article, 10 proven ways to bring Redmi 7A back to life, from basic (cache cleaning) to advanced (kernel setting and background processes shutdown) all work on current versions of MIUI 12-14 and do not require superuser rights, and if you are willing to go further, at the end we will discuss whether to install custom firmware and how to do it as safely as possible.

⚠️ Important: Before optimizing, check for free space in memory (Settings) → If it is less than 1 GB, free up space first, otherwise the system may start to spontaneously close applications.

1. Cleaning the system: remove garbage and cache

The first step is to get rid of temporary files that accumulate over the years. On the Redmi 7A with 16/32 GB of memory, the cache of applications and updates MIUI can take up to 3-5 GB, and not all files are deleted by standard means.

How to clean the cache correctly:

1. Go to Settings → Memory → Cleanup.
2. Click on Deep Clean and select all items except Download (there may be important files).
3. Run the analysis and delete anything the system finds.

For more thorough cleaning, use the built-in Security app:

• 🧹 Garbage: Delete residual files of remote applications.
• 🗑️ Duplicates: Check the folders DCIM Downloads on repetitive photos and documents.
• 📁 Large files: Find and delete video/archives size >100MB.

Make a backup photo in Google Photos|Write down passwords from accounts (if you plan to reset)|Connect to Wi-Fi (updates) MIUI weight ~1.5GB)|Charge the battery to 50%+-->

⚠️ Note: Do not manually clear the cache of system applications (com.android.systemui, com.miui.home) through Settings → Applications -- this can cause interface failures. Use only built-in tools. MIUI.

2. MIUI optimization: disabling unnecessary functions

MIUI is known for its abundance of background processes that eat up RAM and battery power. On the Redmi 7A with 2GB of RAM, this is particularly critical.

List of "gluttonous" MIUI features:

Additionally, disable the auto-launch of applications:

1. Go to Settings → Applications → Application Management.
2. Select any app (like Facebook) → Autorun → Disable.
3. Repeat for all social networks, instant messengers and games.

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If notifications from messengers stopped coming after the autorun is turned off, add them to the exceptions in the Settings section → Battery → Battery Optimization

3. Battery setup: how to extend the operating time

The Redmi 7A has a 4,000mAh battery, but due to MIUI optimizations, real life rarely exceeds 1.5 days.

Top.-5 charge-saving:

• 🔋 Battery Mode: Enable Settings → Battery → Battery mode → Saving charge (limits background activity).
• 🌙 Dark subject: Switch to AMOLED-black background in Settings → Screen. → Dark subject.
• 📡 Network: Turn it off 4G, If you don't need the internet — 2G/3G eat on 20% less.
• 🔍 Geolocation: Set “On-Demand Only” mode in Settings → Confidentiality → Geolocation.
• ⚡ Fast charging: Turn off in Settings → Battery → Fast charging – this will extend the battery life.

⚠️ If the battery is discharged in 4-5 hours even after optimization, check its health through the engineering menu:

#4636### → Information about the battery

A wear rate above 30% means that the battery needs to be replaced – further software optimization will not help.

Every day | Every day | Every 3 days | Less-->

4. Acceleration of work: setting up the processor and memory

The Snapdragon 439 processor in the Redmi 7A has 8 cores, but by default MIUI limits them to work to save power.

Activation of the performance mode:

1. Turn on Developer Mode (shoot 7 times on the MIUI version in Settings → About Phone).
2. Go to Settings → Additional → For developers.
3. Install: Background Process Limitation → Maximum 2. Windows animation/Transitions/Duration of the animator → 0.5x. USB debugging → Enable (need for further manipulations).

For advanced users, use the Tuner CPU app (requires root) to manually adjust core frequencies. Without root, you can limit yourself to changing the I/O scheduler:

echo "cfq" > /sys/block/mmcblk0/queue/scheduler

Termux

ADB

5.Memory optimization: what to do if there is always not enough space

Even with a microSD card, the Redmi 7A suffers from a lack of internal memory due to the features of MIUI.

3 ways to make room:

1. Transfer of applications to SD-Map: Format the card as internal memory in Settings → Memory. Move applications through Settings. → Annexes → [Select an application] → Memory. → Change. ⚠️ The map will become “tied” to the phone and will not be read on other devices.
2. Clean up the Google Play cache: Go to Settings → Apps → Google Play Store → Memory → Clear the cache. Delete the data in Google Play Services (this is secure, it will recover automatically).
3. Turning off system app updates: On Google Play, click on the avatar → Settings → App Auto Update → Never. For critical applications (like WhatsApp), manually update.

Table: What takes up the most space on the Redmi 7A

6. Alternative firmware: should you switch to caste?

If standard methods didn't work, consider installing custom firmware. Redmi 7A is relevant:

• 🔄 LineageOS 18.1 (Android 11) - stable, without Blaatware.

The pros and cons of custom firmware:

⚠️ Attention: Before installing custom firmware:

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Custom firmware gives Redmi 7A a second life, but requires technical skills. If you're not sure, optimise the standard MIUI.

7 Hardware Limitations: When Optimization Will Not Help

Some Redmi 7A problems are hardware-based and not software-based:

• 📉 Slow eMMC memory: Read/write speed ~100MB/s (3-5 times slower than modern smartphones) This is a hardware limitation – no tweaks will speed up the loading of heavy apps.
• 🔌 Micro-USB port: Over time, the connector shatters, causing charging problems (~1500 rubles in the service center).
• 📷 12 MP camera: Weak processor does not pull processing HDR The alternative is to use a Google Camera with a config for the Snapdragon 439.

If your Redmi 7A:

• Overheats above 50 ° C in simple;
• Turns off when the battery is charged 30-40%;
• Not included after falling;

→ These are signs of hardware failure. Software optimization is powerless here.

FAQ: Frequent questions about Redmi optimization 7A