How to remove lags on Xiaomi Redmi 9A: from simple settings to deep optimization

Xiaomi Redmi 9A is one of the most popular budget smartphones, but even it is not immune to performance problems. If your device starts to “hang”, slowly open apps or twitch when scrolling, do not rush to blame the hardware. 90% of the lags are caused by software reasons that can be fixed on their own without visiting the service center.

This article will help you understand why the Xiaomi 9A is slowing down and what to do about it. We will look at both basic methods (cleaning up memory, turning off animations) and advanced ones (resetting to factory settings, flashing). All instructions are adapted for MIUI 12-14 and are relevant for models with 2/32 GB and 3/64 GB of memory. Importantly, some methods require root rights - we will specify separately where they are needed.

Before you start optimizing, ask yourself, when exactly do the lags appear? When you start games, when you make calls, or does your smartphone slow down all the time?

1.Diagnostics: Why Xiaomi 9A started to lag

The first step is to identify the root of the problem. Lags on Redmi 9A are usually associated with:

• 📱 RAM overload: 2-3 GB of RAM quickly clogs with background processes, especially if you don’t close apps.
• 🗃️ Filled internal memory: with less than 10% of the available space, the system begins to “glutch».
• 🔄 Outdated firmware: bugs in MIUI Or the Android kernel can cause freezes.
• 🦠 Viruses/Advertising Software: Third Party APK Often contain hidden miners or spyware modules.
• 🔋 Worn-out battery: When the battery degrades below 70% health, the power controller begins to limit performance.

To check the system boot:

1. Open Settings → About the phone → System status.
2. See the graphs of CPU, RAM and memory usage.
3. If the RAM is loaded to 80%+ at rest, then the problem is in the background.

Also, install the CPU Monitor app (from Google Play) to show you which processes are loading the MediaTek Helio G25 processor the most.

⚠️ Attention: if the lags appeared after falling or getting moisture, the problem may be hardware (detachment of the plume, oxidation of contacts.

2.Basic optimization: cleaning up cache and memory

Start with simple actions – they help 60% of the time:

• 🧹 Cleaning the app cache: Go to Settings → Annexes → App management. Select the heaviest app (e.g. Facebook, TikTok) Click Clear Cache and Clear Data (Warning: This will reset the app settings!).
• 🗑️ Disposal of garbage through MIUI: Open the built-in Security app (shield icon). Select Cleanup → Deep cleanup. Delete temporary files, application residues and mini-program cache.

Disabling Auto-Run Unnecessary Applications

1. In Settings → Applications → Autostart Management.
2. Turn off autoload for instant messengers, games, and social networks (except those you use daily).

After cleaning, restart your smartphone. If you have lags left, move on to the next step.

3. Customization of animation and developer

MIUI uses smooth transition animations by default, which create the illusion of "brakes" on the weak gland.

1. Activate Developer Mode: Go to Settings → About Phone. 7 times click on the MIUI Version (you will be notified “You are a developer”).
2. Turn off animation: Return to Settings → Additional → Developers. Find items: Window animation scale → No animation transition scale → No animation animation transition time animation animation animation animation animation animation animation time → No animation animation

Also on the developer menu:

• 🔧 Turn off the transition animation (Point Force) GPU Leave rendering on – this will speed up rendering).
• 🔋 Turn on Do not turn off the screen while charging (useful for tests).
• 📶 Limit background processes to 2-3 maximum.

These tweaks will make the interface less glamorous, but noticeably faster.The effect is particularly noticeable on the Redmi 9A with 2GB of RAM.

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If after turning off the animation, the screen began to twitch when scrolling, return the animation scale to 0.5x - this is a compromise between smoothness and speed.

4. Update firmware and reset settings

Obsolete MIUI is a common cause of lags. Check the relevance of the firmware:

1. Go to Settings → About the phone → System update.
2. If you have a new version, download it and install it (required via Wi-Fi!).
3. After the update, reset the cache: Turn off the phone. Press Power + Volume up until the Mi logo appears. From the Recovery menu, select Wipe Cache (use volume buttons for navigation).

If the update didn’t help, try resetting to factory settings:

⚠️ Warning: This will delete all data from internal memory! pre-backup through Settings → Additionally. → Backup and reset.

• 🔄 Soft reset (saves files but resets settings): Settings → Additionally. → Backup and reset → Resetting settings
• 🧨 Hard reset (full cleaning): Turn off the phone. Squeeze the power. + Loudness up → Select Wipe Data. Confirm the action (Yes).
• Sensor Diagnostics: Enter code ##6484## → Manual Test: Sensor performance, dynamics, vibrations. If you find hardware faults, don't delay repairs, they can get worse. Average cost of diagnostics in the service: 500-1000 ₽. FAQ: Frequent questions about lags on Xiaomi 9A Can Xiaomi be accelerated? 9A Most of the methods in this article (cache cleaning, animations turning off, settings resetting) don't require root. Advanced methods like custom core firmware already need superuser rights. Why, after the update, MIUI Is this a typical Xiaomi problem - new versions MIUI Often optimized for flagships, not budget. Solutions: Reverse to the previous version via Fastboot. MIUI Lite: Turn off new chips like Super Wallpapers or Always-on Display. How to check if a virus is slowing down your phone? Download Malwarebytes or Kaspersky Mobile and perform a deep scan. Also check: Unknown apps in Settings → Applications: Increased traffic consumption (c Settings) → SIM cards and mobile networks → Traffic? Advertising in notifications (adver sign) Should you buy Xiaomi? 9A For basic tasks (calls, social networks, YouTube) - yes, but with reservations: 👍 Pros: Cheap, good battery, support MIUI. 👎 Cons: weak processor, little memory, no NFC. Alternatives: Redmi 10A (iron is better, or POCO C50 (Can you play Genshin Impact on Xiaomi? 9A? Technically yes, but with reservations: 🎮 Only at minimum settings (30) FPS, low-resolution). 🔥 The phone will warm and discharge quickly. ⚡ It is recommended to disable the background processes and use a cooler. For comfortable gaming, it is better to choose a smartphone with Snapdragon 6xx or Helio G8x.