How to deploy screen on Xiaomi Redmi 9: all ways (including hidden)

Why the Xiaomi Redmi 9 screen flipped over and how to fix it

Did you take your smartphone in your hand and the picture is upside down? Or after the device fell, the screen suddenly turned to 90.°? Problem with display orientation on Redmi 9 (models) M2003J15SC, M2004C3LGG) It's more common than it seems, and 80 percent of the time, it's not a hardware failure, it's a software failure, and it can be fixed in a few clicks.

The causes of incorrect display of the screen are divided into three categories: software (failure of the orientation sensor, MIUI error), hardware (damage to the gyroscope after impact) and user (accidental activation of autorotation or gestures). In this article, we will analyze all the solutions from basic to advanced, including the diagnosis of hardware.

Important: If the screen flips over after a smartphone drops or moisture hits, first check the other features (camera, speakers, sensor) in which cases the problem may be deeper than it seems.

Method 1: Turning off the screen autoturn

The most common reason for an inverted display is the activated autorotation mode, which on Redmi 9 is activated either through the notification panel or in the system settings. Here's how to fix it:

1. Swipe down from the top edge of the screen to open the notification bar.
2. Find the Autoturn button (the icon with the phone and arrows) If it's illuminated, tap it to turn it off.
3. Check the orientation of the screen: if the image is back to normal, the problem is solved.

If there is no auto-turn button on the panel:

1. Go to Settings → Screen → Autoturn.
2. Turn off the slider Automatic turn of the screen.
3. Restart your smartphone (clip Power + Volume up for 5 seconds).

⚠️ Attention: On some firmware MIUI (for example, MIUI 12.5 Enhanced) Autorotation button can be hidden behind the button More (three dots) in the notification panel. If it is not, update the firmware or use an alternative method.

Method 2: Calibration of the orientation sensor

If the autorotation is turned off, but the screen is still not displayed correctly, the problem may be a gyroscope or accelerometer failure, which is responsible for determining the position of the smartphone in space, and can be recalibrated without root rights:

1. Open the phone app and enter the combination: ##6484###
2. You will be taken to the Manual Test Mode menu.
3. Select the Sensor Test option → Accelerometer Sensor.
4. Place your smartphone on a flat surface (screen up) and press Calibrate.
5. Wait until the process is completed (usually 10-15 seconds).

After calibration, check the screen in different positions.

• 🔄 Try repeating the calibration. 2-3 once.
• 📱 Reboot your smartphone.
• 🛠️ If it doesn’t help, reset the sensor settings (more on that below).

⚠️ Warning: Uncalibrated sensors can affect not only the orientation of the screen, but also the camera (for example, panoramic shooting), games (tilt control) and fitness trackers. If after calibration problems remain, this may indicate a hardware malfunction.

Method 3: Reset sensor settings (without data loss)

If calibration doesn't work, the next step is to reset the sensors, and it won't delete your files or your applications, but it will return all the sensors to factory settings.

1. Go to Settings → About the phone → All the characteristics.
2. Tap 5-7 times on the MIUI version until you become a developer!
3. Return to the main settings menu and open Additional → for developers.
4. Find the option Reset sensor settings and confirm the action.

After discharge:

• 🔄 Reboot your smartphone.
• 📲 Check the screen in portrait and landscape modes.
• 🎯 If the problem persists, try rolling back the update. MIUI (if it has been recently installed).

Method 4: Forced screen rotation through ADB (for the experienced)

If standard methods don't work, you can try to force the screen to be positioned via the Android Debug Bridge (ADB), which requires a computer and minimal technical skills.

Preparation:

1. Download and install Platform Tools on PC.
2. On your smartphone, enable debugging over USB (Settings → Additional → For developers).
3. Connect Redmi 9 to your computer via USB-cable (original!).

Execution of commands:

1. Open the command line (Windows) or the terminal (Mac/Linux) in the folder with the platform-tools.
2. Enter the command to check the connection: Adb devices should appear the name of your device.
3. Set a fixed orientation (e.g. portrait orientation): adb shell content insert --uri content://settings/system --bind name:s:user_rotation --bind value:i:0 Where 0 — portraiture, 1 — album screen), 3 — album screen).

To return automatic orientation determination, perform:

adb shell content insert --uri content://settings/system --bind name:s:accelerometer_rotation --bind value:i:1

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If, after the execution, ADB-commands the screen still does not turn, try to turn off and turn on the debugging again USB Sometimes it resets the cache of the connection.

⚠️ Attention: Misuse of the right ADB Do not change other parameters through this utility unless you are sure of their purpose. user_rotation 2 flip the screen upside down!

Method 5: Third-party applications for forced rotation

If system methods didn't work, you can use apps from Google Play that force you to capture the orientation of the screen.

• 📱 Rotation Control - allows you to block the rotation in any position, even if the sensors are not working correctly.
• 🔄 Set Orientation is a simple tool for manual orientation (portrait/album.
• 🛠️ Ultimate Rotation Control - Advanced turn settings for each application separately.

How to set up (in the example of Rotation Control):

1. Install the application and grant it Overlay rights over other windows (if requested).
2. In the main menu, select Lock to Portrait (block in portrait mode).
3. Activate the switch in the notification panel (will appear after installation).
4. Make sure the screen is no longer turning spontaneously.

Cons of this method:

• ⚠️ Applications require additional permissions, which may affect security.
• 🔋 Some utilities consume an additional battery (up to the end of the battery). 5-7% day-to-day).
• 📵 Can conflict with system updates MIUI.

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Third-party applications are a temporary solution, and if the sensors are in a hardware malfunction, they can't completely fix it, they can only mask the symptoms.

Hardware reasons: when to carry in the service

If all software methods have been tried, but the screen on Redmi 9 is still upside down, the problem may be:

• 💥 Damage to the gyroscope/accelometer after falling or impact.
• 💧 Corrosion of contacts on the motherboard (if the phone was in contact with moisture).
• 🔌 Oxidation of the display plume (a common problem after disassembling the smartphone).
• 🔋 Failure of the power controller, which also controls the sensors.

How to diagnose a hardware breakdown:

1. Check if autorotation works in other applications (like the camera or Google Maps). If not, the sensors are the problem.
2. Connect your smartphone to your computer and use the CPU-Z program (Sensors tab). If the accelerometer values do not change when you turn the phone, the sensor is defective.
3. See if there are artifacts on the screen (strips, flickering) - this may indicate problems with the plume.

A critical sign of hardware failure: if the screen only flips in certain applications (for example, in games or the camera), but the menu is displayed normally, the gyroscope is to blame, in which case self-repair is impossible: you need to replace the chip or the entire sensor module.

Cost of repairs in service centers:

Frequent questions about turning the screen on Xiaomi Redmi 9