Why the keyboard is laid on Xiaomi: a full analysis of the causes and solutions

Xiaomi smartphone owners (including the Redmi, POCO and Mi series) often face a problem when the keyboard starts to slow down: characters appear with a delay, clicks are not recorded, or the application freezes at all. This problem can manifest itself in both the standard MIUI Keyboard keyboard and third-party solutions like Gboard or SwiftKey. In 80% of cases, it is not hardware defects, but software conflicts or incorrect settings – and today we will analyze all possible causes and ways to fix them.

It is important to understand that a lagging keyboard is not always a consequence of system overload. Sometimes delays are caused by specific MIUI functions, such as intelligent input (which analyzes your text in real time) or power optimization, which limits background processes. In this article, we will look at both basic methods (reboot, cache cleaning) and advanced ones - for example, disabling MIUI Optimization through ADB or resetting keyboard settings to factory ones.

If you notice that the problem occurred after the MIUI update (especially on versions 14.0+), after installing a new app or connecting Bluetooth devices, these are valuable clues. We have compiled a checklist for quick diagnosis, and we have prepared instructions for different scenarios, from simple to complex. Let's start with the most obvious, but not the least.

Basic causes: system overload and cache

The first thing to check is the RAM load and keyboard cache. Xiaomi smartphones (especially budget models like the Redmi 9A or POCO M3) often suffer from a lack of RAM, which leads to slowing down the interface. The keyboard is one of the most resource-intensive applications, since it works in real time and interacts with several services at the same time.

To check the system boot:

• 📱 Open the Settings. → The phone. → System status, and look at the RAM usage chart. If it's less than 500MB free, that's critical.
• 🔄 Restart your phone in Safe Mode (click the power button) → «Restart in Safe Mode. If the keyboard is working properly, one of the installed applications is to blame.
• 🗑️ Clear the keyboard cache: Settings → Annexes → Application management → [Your keyboard] → Warehouse → Clear the cache.

If the problem disappears after cleaning the cache, it means that temporary files that conflicted with the keyboard are to blame. However, if the delays remain, move to the next section. Particular attention should be paid to models with 4 GB of RAM or less - they have 3 times more lags of the keyboard.

2 Conflicts with MIUI Optimization and Energy Saving

One of the most common reasons for keyboard lags on Xiaomi is MIUI Optimization, which is enabled by default on all devices, designed to improve performance, but in practice often leads to input delays due to aggressive process control, and power saving mode can restrict keyboard performance in the background, causing slowdowns.

To disable MIUI Optimization:

1. Activate Developer Mode: Settings → About Phone → MIUI version (click 7 times).
2. Back to Settings → Additionally. → For developers and find an option MIUI Optimization (can be called Optimization) MIUI»). Turn it off.
3. Reboot the phone.

Also check the energy saving settings:

• ⚡ Open the Settings. → Battery and productivity → Energy saving and disable the "Ultra-energy saving" mode».
• 🔋 In the section Managing the power consumption of applications, find your keyboard and set the "No restrictions" mode for it».

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If you've been warming your phone up since MIUI Optimization was turned off, you can put the setup back and try other methods, which sometimes masks hardware issues with the processor.

3. Problems with MIUI updates and firmware

Many users have noted that the keyboard starts to lag after the MIUI update, especially on versions 14.0.3–14.0.6. This is due to bugs in the firmware that affect the processing of input. For example, MIUI 14 had a problem with the Android System Intelligence service, which conflicted with the keyboard, in which either a rollback to the previous version or a patch can help.

How to check if the update is to blame:

• 🔍 See the update history in Settings → The phone. → System update. If the lags came after the last update, it's probably a firmware bug.
• 📡 Check the forums (for example, XDA Developers or 4PDA) They're often posting temporary fixes to other users of your model.
• 🔙 If the problem is massive, wait for the next patch. If not, try resetting your keyboard settings (more on that below).

For advanced users, if you think it's firmware, you can try installing custom restore (TWRP) and flashing a modified version of MIUI without bugs. However, it's risky and unwarranted. The alternative is to use Gboard instead of the standard keyboard, as it's less dependent on MIUI system services.

4. Viruses, malware and application conflicts

If the keyboard starts to lag after installing a new application (especially from third-party sources), there is a high probability that malware or background conflict is to blame. Some programs (such as keyboard spies or optimizers) can intercept input, which leads to delays.

How to diagnose and eliminate:

1. 🛡️ Scan for viruses using Google Play Protect or Malwarebytes.
2. 🔍 Check the list of newly installed apps. uninstall suspicious ones (especially if they have requested special feature permissions or overlays over other windows).
3. 🚫 Disable special features for unnecessary applications: Settings → Special facilities → Established services.

Pay special attention to applications for:

• 🎮 Cheats in games (can use virtual keyboards).
• 📊 RAM optimizers (often killed by keyboard processes).
• 🔑 Password Managers (may conflict with autocomplete).

Remove unused apps | Check permissions in Settings → Apps | Turn off auto-run for suspicious programs |Reset security settings to factory-->

5. Hardware problems: touchscreen and input controller

If none of the software methods worked, maybe the problem is the hardware, and most of the time, it's the hardware.

• 📱 Faulty touchscreen (especially after falls or moisture infestation).
• 🔌 Oxidized contacts of the display plume (leads to signal delays).
• 🔧 Input controller problems (occurring on models with Mediatek chips, such as the Redmi Note 10).

How to check for hardware malfunction:

1. Connect the external keyboard via Bluetooth or OTG. If it works without lags - the problem is in the touchscreen or its drivers.
2. Run the display test through the engineering menu: ##6484## (some models may have different code) Check the response to touch - if there are dead zones or delays, the touchscreen is to blame.
3. Look at the accelerometer in an app like Phone Tester, and if it jumps for no reason, you might have a motherboard problem.

If the diagnosis confirmed a hardware malfunction, contact the service center. Self-repair touchscreen on Xiaomi without experience is fraught with damage to flexible plumes, which will increase the cost of repair 2-3 times.

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If the keyboard is only in certain applications (like Telegram or WhatsApp), the problem is more software-based. If the lags are everywhere — including locking the screen — it’s almost certainly a hardware malfunction.

6 Keyboard Settings: What You Can Optimize

Even if the keyboard is correct, incorrect settings can cause delays, such as key animations, vibrations when pressed, or text predictions, which increase the workload of the processor, and problems can cause:

• 🌐 Multilingual input (simultaneous work 3)+ Languages inhibit processing).
• 🎨 Keyboard themes (especially animated or high-resolution).
• 🔊 Voice input (if enabled by default).

The best settings for MIUI Keyboard are:

If you use Gboard, turn off:

• 🤖 «Show sentences when entering" (in text prediction settings).
• 📊 «Collection of usage statistics” (may delay work).

7. Resetting and flashing: extreme measures

If all previous methods have failed, there are radical solutions: resetting the keyboard or completely resetting the phone. The first option is less painful and helps in 60% of cases when the problem is caused by corruption of configuration files. The second one returns the phone to a factory state, but requires backup data.

Reset keyboard settings (without data loss):

1. Go to Settings. → Annexes → Application management → [Your keyboard] → Warehouse.
2. Click Clear Data (not cache!) and this will reset all keyboard settings to factory.
3. Reboot the phone.

Full reset of the phone (Hard Reset):

⚠️ Warning: This procedure will delete all data from the device, including photos, contacts and messages. pre-backup through Settings → Additionally. → Backup and reset.

1. Open Settings → Additional → Backup and Reset → Reset settings.
2. Select “Erase all data”.
3. After the reboot, set the phone up as new and check the keyboard.

If even after the reset, the problem persists, it may indicate:

• 🛠️ Damage to system files (requires flashing via Fastboot).
• 🔧 Hardware defect (input controller malfunction).

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Before you reset completely, try creating a new user on the system (Settings → System → Multiple users). If the new user has a normal keyboard, the problem is in the profile, not the hardware.

FAQ: Frequent questions about the laying keyboard on Xiaomi