How to make a split screen on Xiaomi Redmi 9C NFC: way + mistake-making

Screen split feature on Xiaomi Redmi 9C NFC It allows you to work with two applications at the same time – for example, watch a video on YouTube and correspond to Telegram, or copy text from the browser into notes. Despite the budget price category, the smartphone supports this useful multitasking tool, albeit with some limitations compared to flagship models.

In this article you will find all the current ways to activate the multi-window mode on Redmi. 9C NFC steerable MIUI 12–14, including hidden gestures and customizations for developers, and we will also address common bugs (such as why the feature doesn’t work in some applications) and give recommendations for optimizing performance while working with multiple programs at the same time.

1.Official method: splitting through the panel of recent applications

The easiest and most recommended method Xiaomi – using a standard interface MIUI. It works on all versions of the firmware and doesn't require superuser rights. Here's how to do it:

1. Open the first app (like Chrome) you want to pin to the top of the screen.
2. Click the recent apps button (square in the navigation bar) or swipe up from the bottom edge of the screen and hold your finger for 1 second.
3. In the list of open apps, find the icon of the second app (such as Telegram) you want to open at the bottom.
4. Click on the app icon and hold it for 2-3 seconds until a backlight of the multi-window zone appears at the top of the screen.
5. Drag the icon to the top or bottom of the screen – the system will automatically split the display into two equal parts.

Once the windows are in mode, a dividing strip will appear with a dot in the middle, and if you drag it up or down, you can change the proportions of the windows (e.g., make one window 70% and the other one 30%), to close the multi-window mode, just drag the dividing strip to the top or bottom edge of the screen.

Both applications must be open in the background

- In the settings MIUI "Floating Windows" mode is enabled (Settings) → Special facilities → Floating windows)

Disabled navigation gestures from third-party applications (for example, Fluid Navigation)

- Free at least 1.5 GB of RAM (check in Settings) → The phone. → Status)

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2.Alternative method: gesture for rapid separation

In the firmware MIUI 13 and newer has a hidden gesture for a quick split screen, which many Redmi users 9C NFC It's a convenient way to do this if you use multi-windows a lot:

1. Open the first appendix (e.g., Gallery).
2. Swipe your finger from the top right corner of the screen down diagonally (as if drawing a line at an angle of 45).°).
3. Hold your finger at the bottom of 1-2 seconds until the recent app menu appears.
4. Select the second app from the list – the screen will split automatically.

This gesture does not work in all versions. MIUI for Redmi 9C NFC. If it doesn’t work, check your gesture settings:

• 🔧 Go to Settings. → Display. → Additional display settings → Gestures.
• 📱 Make sure the split screen gesture option is enabled (in some firmware it is called Fast Multi-Window).
• 🔄 If you do not have an option, update your firmware to the latest version via Settings. → The phone. → Updating the system.

Official (via recent appendices panel)

Diagonally gesture

Floating window mode

The application side (e.g. Split Screen Launcher)

I don't use multi-windows.-->

3. Floating window mode: mini version of multi-window

If you don't need a full split screen, but only a small window for a messenger or player, use floating windows. This mode is less resource-intensive and works even on weak smartphones like Redmi. 9C NFC.

It can be activated in two ways:

• 📲 Through Settings: Settings → Special facilities → Floating windows → Turn on the switch. After that, the recent app bar will have the option Open in a floating window.
• 👆 Gesture: Hold the app icon in the recent panel and select the Floating window in the context menu. You can drag and drop the window across the screen and resize it.

Floating window restrictions on Redmi 9C NFC:

• 🚫 Not all apps support this mode (such as Instagram and some games).
• 📉 Performance may fall when using 3 simultaneously+ floating-window.
• 🔒 In some firmware, floating windows are disabled by default – manual activation is required.

4. Settings for developers: advanced multi-window features

If you don't like the standard split-screen options, you can activate hidden options through the developer menu.

• 🔧 Change the proportions of windows with step 10% (not 50/50).
• 📱 Enable Forced Multi-Window Mode for all applications (even those that don’t support it).
• 🔄 Disable animations to speed up switching between windows.

To include a menu for developers:

1. Go to Settings. → The phone.
2. Click 7 times in a row on the MIUI version (you will be notified of becoming a developer!).
3. Go back to the main settings menu and open a new section for developers.

Next, scroll down to the Multi-October block and activate:

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If applications start to crash after the Forced Multiwindow is turned on, return the setting to the Off state and use the standard separation method. Some programs (such as WhatsApp) conflict with this option.

5. Problems and Errors: Why Screen Split Doesn't Work

Despite the support of multi-window users Xiaomi Redmi 9C NFC They're often the ones that make mistakes, and these are the most common causes and ways to fix them:

⚠️ Note: If after the update MIUI The split-screen button in the recent app panel has stopped working, reset your gesture settings. → System system → Resetting settings → Reset your gesture settings.

Problem 1: The multi-window button is missing from the recent app dashboard.

• 🔄 Solution: Update the firmware to the latest version. MIUI 12.5 and below, this function may have been hidden.
• 📱 Alternative: Use the gesture diagonally (described in section 2).

Problem 2: The app does not support split screen (black screen or error appears).

• 🚫 Reason: Some apps (such as Instagram or banking) block multi-window security policies.
• 🔧 Bypass: Try opening the application in a floating window or using a Forced Multi-Window (see Section 4).

Problem 3: Strong lags when working in multi-windows.

• 📉 Reason: Redmi 9C NFC It has only 2-3 GB of RAM, which is not enough for two heavy applications (for example, a game) to work simultaneously. + browser).
• ⚡ Solution: Close all background processes through Settings → Annexes → Clear. Turn off animations in the developer settings. Use Easy Mode in the developer settings. MIUI (Settings → Battery and productivity → Performance mode → Light).

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If the multi-window is unstable, try rolling back the firmware one version. MIUI for Redmi 9C NFC There are bugs with multitasking.

6. Performance optimization for multi-window

To ensure that the split screen works smoothly, follow these guidelines:

1. Limit the number of background processes: 📱 Go to Settings. → Annexes → Application management. 🔄 Select Auto Start and disable Autoboot for unnecessary programs.
2. Use lightweight versions of applications: 🌐 Replace Chrome with Chrome Lite or Opera Mini. 💬 Install Facebook Lite, Messenger Lite, Twitter Lite.
3. Turn off the visuals: 🎨 In the settings for developers, turn off window animation, transition animation and animation scale. 🖼️ Install static wallpaper instead of living.

It is also useful to set processor priority for frequently used applications:

1. Open Settings → Applications → Application Management.
2. Select the appropriate app (e.g. YouTube).
3. Press the Battery. → Prioritize the processor and set the high.

💡

For multi-window games (e.g. Brawl Stars) + Discord) Use Game Turbo mode (Settings) → Special facilities → Gaming turbo. This will reduce input delays.

Side of the split-screen annex

If integrated functions MIUI You don't like it, you can use third-party utilities. 9C NFC:

• 🔄 Split Screen Launcher: Allows you to create shortcuts for fast splitting of the screen. Supports template saving (for example, "YouTube") + Notes"). 🔗 Link to Google Play.
• 📱 Floating Apps: Creates floating windows for any application (even those that don't support multi-windows) and has a feature to "pin" windows on top of other programs. 🔗 Link to Google Play.

Warnings when using third-party applications:

⚠️ Note: Some split-screen utilities (e.g. Multi Window) require Draw over other apps and Accessibility Service permissions. This can create security vulnerabilities. Install such programs only from official sources (Google Play) and check reviews.

If after installing a third-party application, the multi-window works unstable:

1. Clear the cache. MIUI: Settings → Warehouse → Clear the cache.
2. Disable battery optimization for utility: Settings → Battery → Optimizing the battery → Find the app → No restrictions.
3. Reboot your smartphone.

8. Screen split in games and social networks: features

Many Redmi users 9C NFC want to use multi-window to run games and instant messengers at the same time (for example, PUBG Mobile + Discord. But there are nuances:

• 🎮 Games: Most 3D-Games (e.g. Call of Duty Mobile, Genshin Impact) block split screen. 2D-For example, among Us, Brawl Stars, you can use Forced Multiwindow to circumvent restrictions, but this often leads to departures.
• 📱 Social Media: Instagram and TikTok do not support multi-windows due to privacy policies. VK Telegram and Telegram work stable. YouTube is better to use the web version in the browser (Chrome in PC mode").

Tips for gamers:

• 🎧 Use floating windows for Discord or Telegram to avoid losing performance in the game.
• 📵 Disable notifications from other apps: Settings → Notifications → Don't disturb mode".
• ⚡ Activate Game Turbo to Prioritize Resources: Settings → Special facilities → Game turbo.

FAQ: Frequent questions about the screen section on Redmi 9C NFC