How to speed up Xiaomi Redmi 9C NFC: from basic settings to advanced tricks

Xiaomi Redmi 9C NFC — It's one of the most popular low-end smartphones with contactless payments, but over time, even it starts to slow down. The reasons can range from overloaded memory to outdated firmware. 7 working ways to speed up the device, from simple (accessible to any user) to advanced (for those who are willing to dig into the settings). MIUI 14/15 They do not require the rights of a superuser (root).

A Helio G35-based smartphone with 2-3GB of RAM isn’t designed to multitask with a dozen apps, but smart optimization can bring it back to its former agility. We won’t recommend “magic overclocking programs” — they’re either useless or harmful. Instead, we’ll focus on system settings, garbage cleanup, and proper resource management.

1.Diagnosis: Why is the Redmi 9C NFC slowing down?

Before you start optimizing, identify a bottleneck. Brakes can manifest in different ways:

• 🐢 Lags when opening applications - a problem with RAM or background processes.
• 📱 Hanging when scrolling menus – overloaded cache or animation MIUI.
• 🔋 Slowing down after 30% battery charge – activated energy saving mode.
• 🎮 Freezes in games - a lack of Helio performance G35 overheating.

To determine the exact cause, check:

1. RAM Occupation: Go to Settings → About Phone → Memory. If you are less than 300-500 MB free, the problem is multitasking.
2. Processor Temperature: Use the CPU Monitor app (from Google Play). When heated above 50°C, trottling (automatically reducing the processor frequency) is triggered.
3. Storage status: Settings → Storage, see how many system files are occupied. If more than 10-12 GB, it’s time to clean the cache.

A critical feature of the Redmi 9C NFC: the Helio G35 processor uses an outdated 12nm process, which quickly heats up and loses performance under prolonged loads. This is not a defect, but a design feature of the budget chips MediaTek.

2. Cleaning the system: remove garbage and cache

The first step to speed up is to free up space and clean up temporary files. On the Redmi 9C NFC with 32 or 64 GB of storage, garbage accumulates especially quickly. Here's what to do:

Clearing the application cache

Cache speeds up the software, but eventually becomes a dump of unnecessary data to clean it up.

1. Go to Settings → Applications → Application Management.
2. Select an app (like Facebook or YouTube) → Storage → Clear cache.
3. For mass cleaning, use Settings → Storage → Cleanup → Cache of applications.

2.2. Deletion of unnecessary files

MIUI hides a lot of junk files that can be safely deleted:

• 📁 Downloads: folder /storage/emulated/0/Download often filled with old files.
• 🗑️ Recycle Bin: In the Gallery and Files, check the Recycle Bin folder – it can weigh several gigabytes.
• 🎵 Offline cache of music/video: YouTube, Spotify and TikTok save content in the video /Android/data.

Attention! Do not manually delete files from /Android/obb or /data folders, which can break games and applications. Use the built-in Settings → Storage → Cleanup → Large files to clean them.

3. MIUI Optimization: Disabling Unnecessary Functions

MIUI is one of the heaviest shells on Android, especially on budget devices, and has a lot of background processes, animations and services that can be turned off without losing functionality.

3.1. Disabling animations

The interface animations eat up the CPU resources and make the system slow, to speed them up or turn them off:

1. Activate Developer Mode: Settings → About Phone → 7 times tap on the MIUI version.
2. Back to Settings → Additionally. → For developers.
3. Find options: Window animation scale → 0.5x Transition animation scale → 0.5x Animator duration scale → 0.5x (Select Animation off for complete disabling, but the interface will become less smooth).

Limitation of background processes

MIUI, by default, stores a lot of apps in your memory, even if you're not using them.

• 🔄 B Settings → Annexes → Application Management Select Program → Battery → Limit background activity.
• 🚫 For radical optimization in For developers, set a background process limit → Maximum 2 of the process.

💡

If notifications from messengers have stopped coming after limiting background processes, add them to exceptions: Settings → Battery → Battery Optimization → Select the application → Do not optimize

Disconnection of MIUI services

Some system applications can be safely disabled:

To disable:

1. Go to Settings → Applications → Application Management.
2. Select the unnecessary application → Disable (do not delete!).

4. Battery setup: why energy saving is slowing down your smartphone

The Redmi 9C NFC is very much using power-saving modes that artificially limit performance, which is good for autonomy, but bad for speed, and let's figure out how to adjust the balance.

Disconnection of the adaptive battery

The adaptive battery function in MIUI analyzes your habits and limits the background activity of "rarely used" applications, the problem is that it often gets it wrong, to turn it off:

1. Settings → Battery → Battery settings.
2. Disable Adaptive Battery and Charging Optimization.

Performance modes

MIUI has hidden performance profiles to activate them:

1. Enable Developer Mode (see Section 3.1).
2. Go to Settings → Additional → For developers → Processor.
3. Choose Performance (instead of Balanced or Energy Saving).

Attention! ⚠️ On the Redmi. 9C NFC With 2GB of RAM Performance mode can cause reboots at high load (for example, in games). If you notice instability, return Balanced.

5. Firmware Update: Why It Matters

Xiaomi regularly releases updates for the Redmi 9C NFC, which optimize the processor and fix bugs, but many users ignore them for fear of breaking the phone.

5.1 Check the current version of MIUI

The latest stable update for Redmi 9C NFC (codenamed angelican) is MIUI 15 based on Android 12.

1. Settings → The phone. → Version. MIUI.
2. If the version is below V15.0.1.0, we recommend you to update.

5.2. Methods of updating

• 📱 By air (OTA): Settings → System upgrade: the safest method, but it requires a stable Internet.
• 💻 Through the Mi Flash Tool: for power users, download the firmware from the official website and flash it through the PC.
• 🔄 Through Recovery: Download ZIP-Firmware file, reboot to Recovery (clamb Power) + Volume up) and select Apply update.

💡

Before upgrading via Recovery or Mi Flash Tool, make sure to back up your data! Use Settings → Additional → Backup and Reset → Local Backup.

Attention! ⚠️ If after the update, the smartphone began to work slower - reset the cache via Recovery (Wipe & Reset). → This won't delete your data, but it will clear temporary system files.

6. Advanced methods: for experienced users

If the basics didn't work, you can try more radical measures, which require precision, but they give you a noticeable increase in productivity.

6.1. disabling MIUI Optimization

MIUI Optimization is a service that manages multitasking and animations, and disabling it may speed up the interface, but some features (such as gestures) will stop working.

1. Install ADB on PC (download from the official website).
2. Connect your phone to your PC, turn on USB Debugging (Settings → For developers).
3. Enter in the command line: adb shell pm disable-user --user 0 com.miui.systemAdSolution

6.2. Use of Lite versions of applications

Many popular apps have lightweight versions that consume fewer resources:

Transfer of annexes to SD-map

The Redmi 9C NFC supports memory cards up to 512GB, but not all applications can be moved to free up internal memory:

1. Put it in. SD-map (recommended class) A1 or A2 speed).
2. Go to Settings → Applications → Application Management.
3. Select the application → Warehouse → Change. → SD-map.

Attention! ⚠️ Don't put it on. SD-Map system applications or games - this will cause lags. Also do not use the card as an internal storage (Adoptable Storage function), as it greatly slows down the smartphone.

7.Extreme measures: reset to factory settings

If nothing works, the last chance to get your smartphone back to speed is a full reset. This will delete all data, so make a backup first.

7.1 How to Reset Your Settings Correctly

1. Save important data (photos, contacts, messages) to your PC or cloud.
2. Go to Settings → Additional → Backup and Reset → Reset settings.
3. Choose to erase all data and confirm.

What to do after discharge

• 🔧 Do not restore data from a backup right away – check the speed of a clean system first.
• 📥 Install applications gradually, watching the performance.
• 🔄 Turn off automatic app updates on Google Play.

💡

After reset, take your time to install antiviruses or “optimizers” – they often cause the brakes themselves. MIUI has built-in security, which is quite enough.

FAQ: Frequent questions about Redmi 9C NFC acceleration