How to speed up Xiaomi Redmi Note 7: a complete guide to optimization

The Xiaomi Redmi Note 7 remains a popular smartphone even years after its release, thanks to its balanced hardware and support for updates. But over time, any device begins to slow down: apps open long, animations twitch, and the battery goes down in half a day, the reasons can be different from clogged memory to crooked MIUI firmware.

In this article, 15 working ways to speed up the Redmi Note 7, tested on MIUI 10–14, we will examine both software tricks (cleaning the cache, turning off the background) and “iron” nuances (replacing the thermal paste, checking the battery). No water – only specific instructions explaining why these methods work on the Snapdragon 660 and 3/4 GB of RAM.

Important: if your device overheats or turns off when you are loading, first check the battery and the thermal interface (section 7).

1.Diagnosis: Why the Redmi Note 7 is slowing down

Before you clean or drop your phone, identify a "bottleneck." Redmi Note 7 brakes for 4 main reasons:

• 📱 Lack of RAM — MIUI aggressively kills background processes, but sometimes "forgets" to release RAM.
• 🗑️ Clogged memory – less than 10% of free storage space leads to lags when writing files.
• 🔋 Degraded battery - when worn >30% of the processor artificially limits performance.
• 🤖 Update curves MIUI — Some versions (e.g., some versions, MIUI 12.5.3) known for bugs with animation.

To identify the problem:

1. Open Settings → About Phone → MIUI version and check the relevance of the firmware.
2. Start Settings → Memory – if free < 5 GB, you need to clean.
3. Install AccuBattery and check battery wear.

⚠️ Attention: If in Settings → Battery → The temperature of the processor exceeds 45°C in plain, the problem is the thermal interface or the battery. Software optimization is powerless.

2.Memory cleanup: remove garbage without root

The Redmi Note 7 comes with an eMMC 5.1 drive that is extremely slow when over 90% full, and even 1-2 GB of free space can cause lags when installing apps or shooting videos. Here's how to make room without losing data:

• 🧹 App cache: Go to Settings → Memory. → Clear the cache. It's safe -- only temporary files will be deleted.
• 📁 Downloads and takes: Use Files by Google (free in Play Market) to find repetitive photos and large files.
• 🎮 Gaming garbage: Remove the game cache through Settings → Annexes → Application management → [Game] → Memory. → Clear the data.
• 📱 System garbage: Enable Settings → Additionally. → Clean and select “Deep Cleaning».

To automate cleaning:

1. Activate Settings → Memory → Autoclean.
2. Set a limit for the basket in the Gallery: Gallery → Settings → Recycle Bin → 15 days.

⚠️ Warning: Don't use "optimizers" like Clean Master - they only clog background processes. MIUI enough.

3. MIUI Optimization: Disabling Unnecessary Functions

MIUI is overloaded with background services that eat up RAM and battery.

For advanced users:

1. Turn off Settings → Accounts → Xiaomi → Sync (if you don’t use the cloud).
2. Freeze system applications via adb shell pm disable-user --user 0 com.xiaomi.mipicks (ADB required).

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If after disabling the animation, the screen flashes when opening the applications, turn back on “Windows Animation” in Settings → Screen → System Animation and leave only “No Animation” for transitions.

4.Battery setup: why performance limiting is slowing down the phone

On the Redmi Note 7 with a worn-out battery (health < 80%), MIUI automatically activates the power saving mode that limits the processor. This leads to jerks in games and slow download of applications.

• 🔋 Turn off the adaptive battery: Settings → Battery → Battery modes → Productivity.
• ⚡ Reset battery statistics: Charge your phone to 100%, then perform adb shell dumpsys battery reset (required) ADB).
• 🔄 Calibration: Discharge the phone to 0%, then charge to 100% without interruptions (the method only works on new batteries).

If the battery is <70 percent healthy, software optimization won't help.

1. Check the battery bloating (if the case is deformed - replace immediately).
2. Buy the original BM47 (4,000 mAh) battery – the non-original ones often have a real capacity of 3000-3500 mAh.

5.Reset to factory settings: when it really helps

If the Redmi Note 7 brakes even after cleaning, and in Settings → Memory is free >10 GB, it's time for a hard reset. It will delete all data, but it will return the phone to the "stolen" state.

• 📲 Save data: Copy photos on PC or Google Photos, export contacts to VCF.
• 🔑 Make sure you know the password from your Mi! account after the reset will require authorization.
• ⚙️ Use the correct method: Settings → The phone. → Resetting settings → Delete all data.

What to do after the discharge:

1. Turn off auto-update MIUI In Settings → The phone. → Updating the system → Settings (⚙️) → Auto-update.

⚠️ Warning: If the phone still brakes after reset, the problem is the hardware (eMMC memory is worn out or the processor overheats.

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Resetting to factory settings eliminates 90% of software lags, but does not help with physical wear of the drive or processor.

6 Advanced methods: overclocking and modification of firmware

If the standard methods didn’t work, you can try advanced optimization, which requires unlocking the bootloader and is potentially dangerous to the device!

• 🚀 FrancoKernel: Improves performance by 10-15% by optimizing the task scheduler. TWRP.

Instructions for unlocking bootloader:

1. Link your Mi Account to your phone in Settings → Accounts.


2. Request unlocking at https://en.miui.com/unlock/ (can take up to 72 hours).




3. Install the Mi Unlock Tool and connect the phone in Fastboot mode.




4. Run unlock (data will be deleted!).

⚠️ Attention: Inept actions with TWRP Or custom firmware can turn your phone into a brick. If you're not sure, consult a specialist.

7. Hardware problems: when the "iron" is to blame

If the Redmi Note 7 is slowing down even after all the software manipulation, the problem is the physical wear and tear of the components.

How to check for "iron":

1. Install AIDA64 and check the processor temperature to simple (normal: <35°C).
2. Run the memory test in AndroBench – read speed should be >150 MB/s.
3. Light a flashlight on the screen at an angle - if you see divorces, this is a sign of detachment of the plume.

⚠️ Warning: If you see a bloated battery when you disassemble your phone, don't turn it on! Risk of fire. Remove the battery immediately and dispose of it.

FAQ: Frequent questions about the Redmi Note 7 acceleration