How to turn off the screen on Xiaomi Redmi 9

Xiaomi smartphone owners often face a situation where the display suddenly changes orientation at the most inopportune moment. Especially relevant is the question of how to turn off the screen on Xiaomi Redmi 9 if you like to read in bed or control the device with one hand. Involuntary change of the picture can be annoying and prevent you from focusing on content.

Fortunately, the MIUI shell on Redmi 9 offers a few flexible ways to manage this feature. You can use standard system tools or resort to more advanced customization methods. In this article, we will break down all the options available so you can choose the most convenient one for yourself.

Sometimes the standard settings menu can hide additional options that even experienced users don’t know about. On Redmi 9, the orientation lock function works independently of the applications running, as long as it is activated globally, allowing you to capture the image in a vertical position even in those programs that usually force the format change.

Using notification curtains to quickly lock

The easiest and fastest way to block the display from turning on the Xiaomi Redmi 9 is to use the control center, which is just swiping your finger from the top edge of the screen down to open the notification panel and quick settings, and here are the main switches that control the operation of the smartphone.

You need to find an icon that usually looks like a lock in a circle or arrows forming a circle. Depending on the version of MIUI, this button can be called "Orientation" or "Block Turn." If you don't see it on the first screen, swipe your finger to the left to open the second page of the widgets.

Pressing this element activates the lock mode. When the function is on, the screen will remain upright even if you rotate the Redmi 9 horizontally, ideal for fast locking, without requiring a deep dive into the menu.

• 🔒 Activation occurs instantly after one touch of the icon.
• 👆 Access to the setting is possible from any screen, including locking.
• 🔄 Status indicator shows the current mode of operation of the sensor.

It's worth noting that some applications can ignore the system setting if they're designed with a forced orientation, but for most standard programs and browsers, this method works flawlessly, and if there's no button in the curtain, you can add it through the Quick Settings Editor, pulling the curtain down even further.

Configure through the system menu of parameters

If you prefer more detailed control of the device, the Xiaomi system settings provide advanced features. To get there, go to the main menu and select Settings. Next, scroll down to Additional Settings or Screen, depending on the firmware version.

Inside the menu, find a section associated with the display or interface. There may be a "Scream Turn" switch. Disabling this slider ensures that Redmi 9 will not respond to the accelerometer data. This is a more reliable way than using a curtain, since it works at the system level.

In some versions of MIUI, Xiaomi has a Touch Button feature that can also affect interface behavior. Make sure that no third-party themes conflict with standard system behavior. Changing theme to standard often solves problems with the disappearance of the desired switches.

⚠️ Warning: After updating the firmware, the location of menu items may change. If you do not find the right switch, search for settings by entering the word "rotation».

Using the system menu is especially useful if you need to adjust screen behavior for specific use cases. For example, you can turn off automatic orientation change, but leave the smart screen feature that adjusts brightness on.

Management through the Security app

A unique feature of Xiaomi smartphones is the built-in Security app, which not only protects the device from viruses, but also contains many useful utilities to optimize the work, among them are features that affect the display of content.

Open the Security app on your Redmi 9 and look for the Acceleration or Tools section. In some cases, you can find settings that limit background processes that can cause accelerometer failures. While there may not be a direct turn button here, cleaning the memory often solves interface lag problems.

Also in this section, there are often recommendations for battery optimization, which indirectly affects the operation of the sensors. If the Xiaomi Redmi 9 is running in energy saving mode, the frequency of the sensor survey may decrease, which makes the screen rotation less responsive or, conversely, more stable depending on the scenario.

• 🛡️ The application protects the system from malicious changes in settings.
• ⚡ Memory optimization improves sensory response.
• 🔋 Energy saving modes affect the operation of motion sensors.

Keep in mind to update the virus databases in the Security app regularly. It is a guarantee that no third-party software interferes with the standard MIUI functions. For Redmi 9, this is especially important, as the device is often used for multimedia, where screen stability is critical.

Use of special opportunities for fixation

Android and MIUI features powerful tools for people with disabilities that can be useful to ordinary users. Go to Settings → Advanced Settings → Special features. Here you can find gesture and screen behavior management features.

One of the useful features is the Special Opportunity Menu, which activates and gives you a floating button on the screen that allows you to quickly switch different settings, including orientation lock, if it's added to fast commands, which is handy if physical buttons or curtains are not available.

Using these features on Xiaomi Redmi 9 allows you to create a unique usage profile.You can customize the device to match your habits as much as possible, ignoring standard system behavior scenarios.

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Use the “Increase” feature with triple tap if you need to consider small details in vertical mode without turning the phone.

Third-party orientation management applications

If you don't have enough MIUI built-in tools, Google Play offers a lot of fine-tuning apps, like Rotation Control or Ultimate Rotation Control, which allow you to control your orientation with high precision, intercept system signals and impose rules.

By installing this app on Redmi 9, you can create profiles for different programs, such as disallowing the browser to turn, but allowing it in the gallery, giving a level of control that is not available with standard Xiaomi tools.

⚠️ Warning: Third-party apps require permission to draw over other windows, which can reduce device performance or cause conflicts with system dialogues.

When choosing an app, pay attention to the permissions it requests. For Xiaomi Redmi 9, it is optimal to choose lightweight utilities that do not consume battery power in the background. Some of them can work even without installation, starting as needed.

• 📱 Possibility of creating exceptions for individual applications.
• ⚙️ Fine tuning of accelerometer behavior.
• 🚫 Forced blocking even in games.

Remember that installing too many of these utilities can lead to unstable MIUI. It is enough to one proven application that will reliably perform its functions on your Xiaomi.

Sensor solution and diagnosis

Sometimes the problem is not the settings, but the sensor itself, or the software failure. If the Redmi 9 screen is behaving unpredictably, try calibrating. To do this, dial the code ##6484## in the Phone app to enter the engineering menu.

In the engineering menu, select the item associated with the accelerometer and follow the instructions on the calibration screen. Put your phone on a flat surface and press the calibration button, which will help the system correctly determine the position of the device in space.

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Calibration of sensors through the engineering menu is an effective way to eliminate software errors of the accelerometer without resetting data.

If calibration didn’t work, it could be physical damage or a major software conflict, and it’s worth checking if an app that may have disrupted the system has been installed recently, and removing suspicious software often returns the Xiaomi Redmi 9 to normal operation.