When your Xiaomi Redmi stops responding to a change in position in space, it can be taken by surprise at the most inopportune moment. You try to watch a video in a horizontal orientation or easily type with both hands, but the image stubbornly remains vertical. It's not just a minor inconvenience, but a signal that one of the key sensors of the smartphone is working incorrectly or locked software. Understanding the nature of this failure is the first step to quickly restore the functionality of the device without going to the service center.
In most cases, the problem lies in the banal lock function in the notification curtain or temporary software failure of the MIUI operating system. However, if simple reboot methods do not help, it is worth digging deeper. Perhaps it is a physical malfunction of the accelerometer, which is responsible for tracking the orientation of the gadget in space. In this article, we will discuss in detail all possible causes, from the most obvious to complex hardware breakdowns, and provide step-by-step instructions for their elimination.
Sometimes users don't even know they've activated the screen locking function by accident, by hitting a button in their pocket or bag, which is why diagnosis always starts with checking the basic interface settings. If the software is OK, you'll have to resort to more radical methods, including resetting or calibrating the sensor. Let's go through all the stages of troubleshooting to get your smartphone back to its normal responsiveness.
Checking basic settings and blocking the function
The first thing to do if the screen autorotate on Redmi is not working is to make sure that the function is not manually locked. In the MIUI shell, this option is brought to the control center, but it is easy to miss due to the abundance of other icons. Often, the user accidentally presses the lock icon, after which the phone stops responding to turns. Check the top notification curtain: there should be a button with the image of the lock in the circle or arrows. If it is active (backlit), the rotation function is forced to turn off.
In some versions of the firmware, orientation settings can be duplicated in the special features menu. This is made for people with disabilities, but may interfere with normal use. Go to Settings → Advanced Settings → Special features. Here it is worth checking if any filters or gesture controls are included that can intercept screen control. Turning off unnecessary options often solves the problem instantly.
And you should also look at the particular app that you see a problem in. Not all programs support horizontal default. For example, some social networks or banking applications can be vertical regardless of the system settings. To make sure that the sensor is working, try running a standard gallery or browser and rotating the device. If it turns, then the phone is fine, and it's the limitations of the particular software.
⚠️ Warning: If you use a low-quality protective glass or thick case, they can create mechanical pressure on the edges of the display, which is sometimes interpreted by the system as a ban on changing orientation.
Diagnosis of accelerometer and gyroscope
Two main components are responsible for the correct operation of the autorotation in Xiaomi smartphones: an accelerometer and a gyroscope. The accelerometer measures the acceleration and position of the device relative to the gravity vector, and the gyroscope tracks the angle of inclination. If one of these sensors fails or begins to transmit incorrect data, the screen stops turning. In Android, there is a built-in engineering menu to check these components, which is available on most of the brand’s devices.
To run the diagnosis, open the Phone app and dial the code ##6484##. This will open the CIT (Customer Information Test) engineering menu. In the test list, find the Accelerometer or Gyroscope. Run the test and put the phone on a flat horizontal surface. The system will show the current XYZ coordinates. If the values are very different from zero or do not change when you turn the device, then the sensor is defective or requires calibration.
It's important to understand the difference between a software failure of a sensor and a physical breakdown. If after rebooting or calibrating tests still show an error, the plume inside the case may have moved away or the sensor is damaged by a fall. In such cases, the software methods will be powerless and it will require disassembling the device. However, before carrying the phone for repair, try recalibrating through the same engineering menu, following the instructions on the screen.
- 📱 Checking in CIT: Use the ##6484## code to access the hidden diagnostic menu of all components.
- 🔄 Calibration: The accelerometer test menu often has a "Calibrate" button that resets current readings to factory readings.
- 📉 Data analysis: In horizontal positions, the values of the X and Y axes should be close to 0, and the Z axis should show the value of gravity (about 9.8 m/s2 or 1g).
- 🛠️ Third-party apps: If the engineering menu is not available, use apps like the Sensor Test from Google Play for a similar check.
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If the accelerometer test shows constant jumps in the engineering menu, even on a stationary table, it may indicate a software driver conflict. Try updating the system or resetting to factory settings.
Software failures and application conflicts
The MIUI operating system, like any complex software product, is prone to errors. Temporary files, cache of system services or conflict of recently installed applications can block the operation of screen rotation services. This is especially common after a firmware update, when old settings conflict with new interface algorithms, in which case cleaning the cache of the Screen Rotation service or resetting the design settings helps.
Sometimes third-party launchers or gesture control apps are the culprit. If you have installed a new design theme or a navigation bar changer, try temporarily disabling them. Go back to the standard POCO Launcher launcher or system interface. If the problem has disappeared, it means that the conflict is in third-party software. It is also worth checking the list of running processes: some memory "optimizers" can aggressively terminate system services responsible for sensors.
In rare cases, the cause is a crowded cache of Google Play Services or the Android framework itself. Clearing these services will not delete your personal files, but will return the system settings to the default state. To do this, go to Settings → Apps → All apps, find “Google Play Services” and select “Clear Cache.” A similar procedure can be done for the Settings app, if the system allows you to do this without resetting all settings.
| Type of failure | Symptoms | Method of decision | Probability of success |
|---|---|---|---|
| Cash system. | Turning works in jerks or only in some applications | Clearing the cache in the application store | Tall. |
| Thematic conflict | The problem arose after the change of design | Resetting theme to standard (Classic/Default) | Medium |
| Update error | Failure after installing a new version of MIUI | Complete data reset (Hard Reset) | Tall. |
| Third-party software | Turning is blocked in specific scenarios | Removal of newly installed programmes | Medium |
☑️ Actions in case of software failure
Calibration of the screen and sensors through the engineering menu
If a simple check fails, you have to perform a forced calibration, which is a process where the system re-remembers the zero position of the sensors. On Xiaomi smartphones, this is done through the same CIT menu that we mentioned earlier. Find the Axelerometer test, press the calibration button, and put the phone on a perfectly flat surface. Don't touch the device until the process is complete.
There is also a hidden method of calibrating through the developer menu, although it is not available on all versions of Android. Activate the developer mode by seven times clicking on the build number in the About Phone section. Then look for items related to sensors or debugging in the developer menu. However, the most effective and safe way is to use the built-in engineering test, since it works at a low level of access to the hardware.
After calibration, be sure to restart the smartphone, which will allow the system to apply new parameters and re-initiate sensor drivers. If after rebooting and calibrating the autorotor still does not work, and there are obvious data distortions in the tests, the problem is likely hardware in nature, in which case software manipulations can only temporarily improve the situation, but will not eliminate the root of the problem.
⚠️ Attention: During calibration, the phone must lie on a completely flat and stationary surface. Even a slight shaking of the table or tilting can lead to incorrect recording of parameters, which will exacerbate the problem.
What if the #6484## code doesn’t work?
Hardware malfunctions and physical damage
When all software methods are exhausted, the only option left is physical failure. The accelerometer and gyroscope sensors in modern Redmi smartphones are miniature chips soldered on the motherboard. They are extremely sensitive to bumps, vibrations and falls. Even if the phone looks whole, the contact inside may have gone away or the sensor crystal may have been damaged.
Another reason could be battery bloating: The battery in Xiaomi smartphones is located directly under or near the motherboard. When it swells, it starts to press on the internal components, which can disrupt the plumes and contact sensors. If you notice that the back of the phone has started to recede or the screen is slightly bulging, immediately stop using the device and replace the battery.
It's also important to avoid moisture. Even if the phone has water protection, the leakage is broken over time. Microscopic moisture droplets can oxidize the sensor contacts, causing corrosion and closure. Visually, it's hard to notice, but sensor failure symptoms are common. If the phone has recently come into contact with water, don't try to charge it, but dry it in a silica gel environment or contact the service.
- 💥 Falls: A hit on a hard surface can tear the microscopic sensor off the board, requiring soldering at a service center.
- 🔋 Battery bloating: Battery pressure is a common hidden cause of electronics failure, requiring immediate replacement of the battery.
- 💧 Oxidation: The moisture that has fallen causes corrosion of contacts, which is treated only by ultrasonic cleaning of the board by a specialist.
- 🔌 Footage: When you replace the screen or battery yourself, you can accidentally damage the plume going to the sensor control board.
Radical measures: Resetting and reflashing
If you're sure the hardware is intact but the persists problem remains, the final software argument is a full factory reset: This action will remove all data, apps and settings, returning the phone to the "out of the box" state. Before doing so, be sure to back up important contacts and photos to the Mi Cloud cloud or computer. Reset often eliminates deep system errors that are not visible in normal use.
You can reset through the recovery menu. Turn off the phone, then press the power and volume buttons at the same time. In the menu that appears, select a language (usually English or Chinese) and find Wipe Data or Clear Data. Confirm the action. Once the procedure is complete, the phone will restart, and you will have to reset the original setting. If this does not work, you will likely need to flash the device through the computer using the Mi Flash Tool utility.
Flashing is a complex process that requires an unlocked bootloader and the original firmware file, and errors in the process can lead to a device building. So if you don't have experience with ADB and Fastboot, you'd better leave it to the professionals, but in 90% of cases, even a routine data reset solves the autorotation problem if it's caused by software.
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Hard Reset eliminates 95% of software causes of autorotation failure, but requires prior backup of important information.