Why Xiaomi Redmi is slowing down 9A: All causes and methods of elimination

Xiaomi Redmi 9A — One of the most popular budget smartphones, but even it is not immune to performance problems. If your device has started to "hang", slowly open applications or suddenly reboot, do not rush to blame the manufacturer. In 90% of cases, the brakes are caused by settings, system overload or outdated software – and all of these can be fixed on your own.

This article will help you understand why Redmi is slapping. 9A, We've analyzed user reviews, performance tests, and Xiaomi's official guidelines to gather all the possible causes, from a trivial memory shortage to hidden firmware errors. Give step-by-step instructions that will return the smartphone to its former speed.

We warn you right away: if the brakes appeared after physical damage (fall, moisture), the problem is more hardware - and only the service center will help.

1. Lack of RAM (RAM)

Redmi 9A It's only got 2-3GB of RAM (depending on the modification), and that's critically low for today's applications. When the memory is clogged, the system starts to "reset" the background processes, causing twitching interfaces and long loads of programs.

How to check the loading of RAM:

1. Open Settings → About the phone → System status.
2. Check out the graph Memory Use.
3. If it is less than 300-500 MB, it is time to clean.

Typical memory eaters:

• 📱 Social networks (Facebook, Instagram, TikTok) – up to 10 background processes.
• 🎮 Games (PUBG Mobile, Free Fire – Even after closing, take up to 1 GB of RAM.
• 🔄 Auto-Update Apps in Google Play.
• 📊 Weather widgets, currency rates – constantly synchronized.

⚠️ Warning: Don’t use the Play Market memory boosters – they only make the problem worse by creating additional processes. Instead, turn on built-in optimization: Settings → Annexes → Cleanup.

Close all applications through the "Recent" button

Disable Auto-Run Unnecessary Programs

Remove widgets from the main screen

Limit background activity in battery settings-->

2.Crowded storage (ROM)

Redmi 9A It was released with 32 or 64 GB of internal memory, but it is actually available to the user 5-10 GB less because of the preinstalled software. When there is less than 10% of free space, the system begins to slow down - this is due to the way Android manages cache and temporary files.

How to check the storage load:

1. Go to Settings. → Warehouse.
2. Pay attention to the System Data section – if it takes more than 15-20 GB, it’s time to clean.

Where to look for "garbage":

• 📸 App cache (especially Google Chrome, YouTube, instant messengers).
• 🎥 Downloads – Download folder is often full of unnecessary files.
• 🗑️ Remains of Remote Programs in Folders Android/obb and Android/data.
• 📂 Duplicate photos (created when imported from WhatsApp, Telegram).

Redmi's critical error 9A: When you fill up more than 95% of the memory, the smartphone automatically deletes files from the folder. DCIM (Photos and videos) to make room for system operations, which can lead to data loss!

Photos and videos|Applications and games|Cash and temporary files|I don't know, I haven't.-->

3.Outdated firmware (MIUI)

Xiaomi regularly releases updates for Redmi 9A, But many users ignore them for fear of breaking the phone. MIUI There are errors that directly affect productivity:

• 🐌 Memory leaks in MIUI 12.0.8 and below (amended 12.0.15).
• 🔄 Excessive processor heating due to unoptimized core.
• 📱 Freezes when unlocking (always-on display animation bug).

How to update firmware:

1. Connect to a stable Wi-Fi network (update “over the air” weighs 1.5-2 GB).
2. Go to Settings → About the phone → System update.
3. Click Check Updates and wait for the download.
4. Before installing, charge your phone at least 50%.

If the update is not available:

• 🔧 Check the firmware region: Settings → Additionally. → Region (must be Russia or Global).
• 📡 Reconnect to the network or use it VPN (Sometimes updates are delayed in some countries).
• 🖥️ Download the firmware manually from the official Xiaomi website and install through System Update → Three points. → Select a file.

⚠️ Warning: If after the update, the smartphone began to slow down even more, reset the cache via Recovery: Turn off the phone. + Volume up until the Mi logo appears. Select Wipe Cache (Manage volume buttons).

💡

Updating your firmware is the most effective way to eliminate system lags, but only if you choose stable versions (not beta!).

4. Processor overheating

Redmi 9A Powered by MediaTek Helio processor G25, It's prone to overheating at high loads, when the chip temperature is above 60 to 65.°C, the system automatically reduces performance (thermal throttling), which causes brakes.

Causes of overheating:

• 🔥 Games (Genshin Impact, Call of Duty Mobile) GPU 100%.
• ☀️ Direct sunlight or hot weather (+30°C and above).
• 🔋 Charging. + Playing at the same time (especially fast charging).
• 📶 Weak network signal – modem is operating at power limit.

How to check the temperature:

1. Install the AIDA64 or CPU Monitor app.
2. Run a heating test (or just play for 10 minutes).
3. If the temperature is above 70°C, cool the device immediately.

Cooling methods:

• ❄️ Remove the cover - it blocks the heat sink.
• 📵 Turn off mobile data/Wi-Fi play-in.
• 🔋 Do not play while charging.
• 🛠️ Replace the heatpaste (if your phone is older than 2 years).

5. Application conflicts and viruses

Even the Redmi. 9A Viruses or conflicts between programs that steal resources from the system can occur:

• 📱 Sudden banner ads in the notification menu.
• 🔄 Spontaneous browser openings with unknown sites.
• 📈 Unexplained traffic consumption (check in Settings) → SIM-maps and mobile networks → Using traffic).
• 🚫 Blocking standard functions (for example, it is impossible to change wallpaper).

How to check the system for viruses:

1. Install Malwarebytes or Dr.Web Light (free versions).
2. Start a deep scan (not fast!).
3. Remove all threats and reboot your phone.

Conflicting annexes:

• 🔄 Optimizers and Boosts (Clean Master, DU Speed Booster – often cause lags themselves.
• 📡 VPN-Applications with aggressive advertising (Turbo) VPN, Super VPN).
• 🎵 Music players with built-in miners (some modifications of Spotify from third-party sources).

If the antivirus has not found anything, but suspicions remain:

1. Check the list of device administrators in Settings → Passwords and security → Device administrators.
2. Disable the rights from unknown applications.
3. See the special features (Settings) → Special facilities → Special Opportunity Services – There may be hidden services.

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If the lags remain after removal of the virus, reset the network settings: Settings → System system → Resetting settings → Resetting Wi-Fi, mobile network and Bluetooth settings will delete saved passwords but eliminate possible network conflicts.

Battery wear and tear

Redmi battery 9A (5000 mAh) is designed for 300-500 charging cycles, and then the capacity drops, and the phone starts to brake because of the power of the car:

• 🔋 Frequent microresets when voltage drops below 15%.
• 🐢 Activation of energy saving mode (limits productivity) CPU).
• ☠️ Sudden shutdowns at 20–30% charge (due to incorrect display of the level).

How to check the status of the battery:

1. Install AccuBattery (shows real capacity and wear).
2. If the capacity has dropped below 80% of the original (i.e. less than 4000 mAh), it is time to change the battery.
3. Check the battery temperature in the same app – if it’s consistently above 40°C, it's a sign of degradation.

How to extend the life of the battery (if the wear is less than 85%):

• 🔌 Do not keep on charging for more than 8 hours (especially at night).
• 🔋 Avoid a rank below 10%.
• ☀️ Do not leave your phone in the sun (for example, on a torpedo in a car).
• 📵 Turn it off. 4G/LTE, If you don't use the Internet.

If the capacity fell below 70%, the replacement of the battery will cost 1500-2500 rubles (depending on the service). MB0F.

7. Hardware problems

If all software methods have been tried, but Redmi 9A It still does, it could be iron:

How to check for hardware problems:

1. Run the equipment test through MIUI Diagnostics: Dial in the dialer ##4636##. Select Equipment Test. Check all modules (especially Touch Screen and Sensors).

Don’t take your phone apart by yourself.

⚠️ Warning: If the phone falls or gets wet, even small micro-cracks on the board can cause brakes months after the incident, in which case only professional microscope diagnostics will help.

FAQ: Frequent questions about lags on Redmi 9A