Dividing the screen on Xiaomi Redmi 9T: a complete guide with MIUI secrets

The split screen (or multi-window mode) feature on Xiaomi Redmi 9T allows you to work with two applications simultaneously – for example, chatting in the messenger and watching videos, or copying text from the browser into notes. Despite the obvious benefits, many smartphone owners do not even know about its existence or face problems when activating. In this article, we will discuss all the ways to enable a multi-window on Redmi 9T, the nuances of working in different versions of MIUI, and give tips on how to optimize performance while working with several applications.

Importantly, the Redmi 9T (M2010J19SG) has a split screen feature implemented at the MIUI firmware level, not Android, which means that it works depending on the shell version (12, 13 or 14) and may differ even on the same device after the upgrade. If you recently upgraded your smartphone and the multi-window stopped working, don’t panic: most likely, the activation method has changed.

In the article you will find:

• 🔧 3 Ways to Enable Screen Split (Including Hidden Method for Screen Splitting) MIUI 14)
• ⚙️ Step-by-step setting up the multi-window mode with a photo
• 📱 List of apps that do not support screen splitting on Redmi 9T
• ⚡ Tips for speeding up the smartphone with an active multi-window
• 🚨 5 Common Problem Solutions (Black Screen, Hanging, No Button)

1. Does the Xiaomi Redmi 9T support split screen?

Redmi 9T It is equipped with Qualcomm Snapdragon chipset 662 It initially supports split screen at Android level. 10/11. However, its implementation depends on the version. MIUI:

On Redmi 9T with India firmware (model M2010J19SI), the multi-window function can be disabled by default due to performance optimization, in which case it can be activated via Settings → Special Features → Functions Lab (see section 3 for more details).

If your smartphone does not support split screen, check:

• 📱 Version MIUI In Settings → The phone.
• 🔄 System updates (sometimes the function appears after the update)
• 🌍 Regional firmware (on global versions multi-window works more stable)

Method 1: Splitting the screen through the notification panel (MIUI 12/13)

The easiest method is to use a button in the notification curtain, which works on most versions of MIUI, but may not be available on customized firmware.

Instructions:

1. Open the first app you want to use in a multi-window (like YouTube).
2. Swipe down from the top edge of the screen to open the notification bar.
3. Find the "Separate Screen" button, if it's not there, tap it on a pencil and add it manually.
4. Once you click, the screen splits into two parts, and at the bottom, you'll see a list of recently used apps -- select the second.

Important: If the button is not in the curtain even after editing, then your version of MIUI uses a different activation method (see Section 3).

First appendix opens

The notification panel is completely swiped

The "Share-Share" button is added to the curtain

The second app is selected from the list of recently opened-->

Method 2: Activate through application settings (MIUI 12.5+)

In MIUI 12.5 and later, the multi-window feature is often hidden in the multitasking menu, a method that works even on firmware that does not have a button in the curtain.

Step-by-step:

1. Open the first app (like Chrome).
2. Click on the square button (multi-tasking) and hold the app icon for 2-3 seconds.
3. In the menu that appears, select “Share Partition”** (or “Open in split mode”).
4. The screen will split, and at the bottom of the list of applications will appear – select the second.

If the “Share Sharing” item is not in the context menu:

• 🔧 Go to Settings. → Annexes → Application management, select the desired application and enable the option “Allow screen splitting».
• 🔄 Reboot your smartphone – sometimes it helps you get back hidden features.

💡

If the second app doesn’t open in the multi-window, try running it in normal mode first and then adding it through the multitasking bar.

Method 3: Hidden method for MIUI 14 (gesture + button)

In MIUI 14 (based on Android 13), Xiaomi developers have changed the logic of the multi-window, now activation requires a combination of gesture and pressing a button.

How it works:

1. Open the first appendix.
2. Swipe from the bottom up and hold your finger on the screen (multitasking call).
3. Without letting go of your finger, tap the application icon – a menu will appear.
4. Select “Share Sharing”** (Icon with Two Windows).
5. At the bottom of the screen will appear a panel with applications – select the second.

On the Redmi 9T with MIUI 14, this method only works if the navigation gestures option (not buttons) are enabled in the settings.

1. Select “Gests” (not “Buttons”).

5.Apps that do not support screen splitting on Redmi 9T

Not all programs can run in multi-window mode, but here is a list of the apps that most often refuse to open in split screen on Redmi 9T:

• 🎮 Games (PUBG Mobile, Genshin Impact, Call of Duty – blocked due to high load on the processor.

If you need to use an incompatible application in a multi-window, try:

• 🔄 Update the application to the latest version.
• 📥 Install an alternative client (e.g., Vance instead of YouTube).
• ⚙️ Enable Developer Mode and disable Multi-Window Restriction (see Section 7).

💡

Games and banking apps will never support split screen on Redmi 9T due to security and performance limitations.

6. Optimizing performance with split screen

The two apps simultaneously add load to the Snapdragon 662 processor and RAM (4GB in the base version of Redmi 9T). To avoid lags, follow these tips:

• 🧹 Close background processes before activating the multi-window: swipe up the screen and swipe unnecessary applications.
• ⚡ Enable Performance Mode in Settings → Battery and productivity → Performance mode.
• 🔋 Turn off battery saving for used applications in Settings → Battery → Choice of applications.
• 📶 Switch to the switch. 4G instead 5G (If you use mobile Internet – this will reduce the load on the modem.

If the smartphone is still slowing down:

• 🔄 Reduce the screen resolution to HD+ (1600×720) In Settings → Display. → Screen resolution.
• 🎨 Turn off interface animation in Settings → The phone. → Version. MIUI (tap 7 times to turn on the developer mode, then in Settings → Additionally. → For developers, set the "Scale of Animation" on 0.5x).

⚠️ Note: if two “heavy” programs are running in the multi-window (e.g., Chrome) + Google Maps, your smartphone can overheat. Monitor the temperature through the System Status widget in the notification curtain.°C. Forcedly close one of the applications.

7. Solving Screen Split Problems

If the multi-window is not working or is not working correctly, use these tips:

If none of the methods worked, try resetting (without deleting the data):

1. Go to Settings → About the phone → Reset settings.
2. Select Reset UI Settings** (not to be confused with a full reset!).

⚠️ Note: on some of the firmware Redmi 9T (Especially customized) split screen function can be completely removed, in which case only flashing to the official global version will help. MIUI.

FAQ: Frequent questions about splitting the screen on Redmi 9T