Screen flickering on Xiaomi Redmi 9A: 7 Proven Ways to Solve the Problem

Screen flickering on Xiaomi Redmi 9A — A common problem that can turn smartphone use into torture, where the screen starts to twitch, blink, or spontaneously change brightness, which interferes with reading, watching videos, and even normal application work. In most cases, it is not hardware breakdowns that are to blame, but software failures or incorrect settings that can be corrected on your own.

This article will help you understand why there is a flicker on Redmi. 9A We'll look at both simple solutions (like adjusting the refresh rate of the screen) and more complex methods like resetting or checking the plume. It is important to understand that not all methods are universal – the effectiveness depends on the root cause of the malfunction.

If you're Redmi. 9A It only flickers when the battery is low or in certain applications, but it's more software-based, and if the flicker appears immediately after it's turned on and doesn't go away, it could indicate a hardware defect that requires expert intervention.

1.The reasons for the screen flicker on Xiaomi Redmi 9A

Before we start repairing, we need to understand what exactly causes the flicker. - Redmi 9A There are a few “weak spots” that most often lead to this problem:

• 🔄 Automatic brightness control. Even in 2026, many users are experiencing a bug when the light sensor is too aggressive, causing the screen to blink at the slightest change in light.
• 📱 Unstable firmware MIUI. Official updates sometimes contain errors that affect the display, especially for versions. MIUI 12.5 and MIUI 13 on the Redmi. 9A.
• 🔌 Power problems: flickering can occur when the battery is discharged (below 15%) or when using a non-original charger.
• 🛠️ Hardware malfunctions: A damaged display plume, a detached contact, or a factory defect in a matrix, all of which require physical repair.

Interesting fact: on Redmi 9A (model M2006C3LG) flickering is often associated with cheap IPS-If the phone falls or is subjected to severe vibration (for example, in a car), the risk of hardware defect increases by 3 times.

2. Fast solutions: screen settings and brightness

Start with the simplest ways – they help in 60% of cases and do not require special knowledge.

Turning off the automatic brightness

Autobrightness algorithm in MIUI It often doesn't work properly, especially when there's a sudden change in lighting, to turn it off:

1. Go to Settings → Display.
2. Press Brightness.
3. Turn off the automatic adjustment slider.
4. Manually set a comfortable brightness level (recommended) 50-70%).

If the flicker disappeared, the problem was the light sensor. 9A Calibration of the sensor through the engineering menu (##6484###) helps, but this method is risky for beginners.

Change in the frequency of screen refresh

Redmi 9A supports a 60Hz refresh rate, but sometimes the system is knocked down to 30Hz or 90Hz (if a custom launcher was previously installed:

1. Open the Settings. → Display. → Screen refresh rate.
2. Select 60 Hz (standard value).
3. Reboot the phone.

If the menu doesn't have "Update Frequency" on it, your firmware doesn't support manual configuration, and then only the update will help. MIUI or reset to factory settings.

3. Software failures: update, reset and safe mode

If the flicker didn't go away after adjusting the screen settings, the problem lies deeper in the system software. Let's look at three key methods.

Update MIUI last-minute

Xiaomi regularly releases patches to fix the display bugs.

1. Go to Settings → About the phone → System update.
2. Click Check for updates.
3. If a new version is available, download it and install it.

⚠️ Warning: If the phone is under 30%, the update may interrupt and cause the device to be completely inoperable. 9A the original charger before the start of the process.

After the update, check the screen during the 10-15 If you have any flicker left, move on to the next step.

Launching in safe mode

Safe Mode helps determine if a third-party app is to blame for the flickering, so you can activate it:

1. Press the power button before the turn off menu appears.
2. Press and hold the item Turn off.
3. Confirm the transition to Safe Mode.

Only system applications work in this mode, and if the flicker is gone, uninstall the recently installed programs (especially launchers, optimizers, or games).

Reset to factory settings

An extreme measure if other methods have not worked: Reset will delete all data, so make a backup first:

1. Go to Settings → Additional → Recovery and Reset.
2. Select Settings Reset.
3. Confirm the action.

Once reset, the phone will reboot, and if the flicker was caused by a software conflict, it should disappear.

4.Power problems: battery and charging

A low battery charge or a faulty charger can cause voltage drawdowns that cause the screen to flicker. Here's how to check this:

Diagnostics of the battery

If the flicker is increased when the charge is below 20%, it's probably the battery that's worn out.

1. Install the AccuBattery app from Google Play.
2. Run a battery health test.
3. If your health is below 80%, it is time to change the battery.

For Redmi. 9A The original battery has a capacity of 5000 mAh. If the application shows 3,500-4000 mAh, this is a sign of severe wear and tear.

Checking of the charger

Unoriginal charges or damaged cables can cause power surges.

• 🔌 Connect the phone to another charger (preferably the original Xiaomi with output) 5V/2A).
• 🔄 Use the other USB-cable (better with labeling) USB 2.0).
• 📱 Charge the phone from the computer - if the flicker is gone, the problem is in the power supply.

⚠️ Warning: If the phone gets too hot when charging (above 45)°C), immediately disconnect it from the mains. Overheating can damage the power controller and aggravate flickering.

💡

To check the battery temperature, enter the dial code ##4636## and select Battery Information.

5. Hardware malfunctions: when a workshop is needed

If none of the software methods worked, the problem is probably hardware, and here are some signs to get in touch with the service:

• 💥 The flicker appears immediately after the phone is turned on (even before the system boots up).
• 🎨 On the screen you can see stripes, artifacts or “broken” pixels.
• 🔧 The phone fell or was subjected to severe vibration (for example, in a car without mounting).
• 🔌 The flickering is accompanied by spontaneous reboots.

The most common hardware reasons:

If you're Redmi. 9A warranty (up to 12 months from the date of purchase), contact the official service center Xiaomi. screen flicker is warranty cases, unless it is caused by mechanical damage.

💡

Don’t try to disassemble Redmi yourself. 9A It's a device that's attached to the glue, and if you're not done properly, you can damage the sensor layer.

6. Alternative methods: if nothing helps

Sometimes flickering is caused by non-obvious causes, and here are some of the non-standard solutions:

Power saving mode shutdown

Ultra-Saving or Energy Saving Mode May Limit Productivity GPU, And that leads to artifacts on the screen:

1. Go to Settings. → Battery.
2. Turn off the energy saving slider.
3. In the Battery Modes section, select Performance.

6.2.Verification for viruses

Some malware can interfere with the graphics driver, scan your phone with Malwarebytes or Dr.Web Light, and if viruses are found, remove them and restart the device.

Change of launcher

Stock launcher MIUI Try installing an alternative launcher (like Nova Launcher or Lawnchair) and check if there is any flicker left.

Calibration of the screen through the engineering menu

This is a method that's suitable for power users, and to open the engineering menu:

1. Enter the dialer code: ##6484##.
2. Select Display.
3. Calibrate the colors and brightness (do not change the parameters if you are not sure of their value!).

⚠️ Attention: Incorrect settings in the engineering menu can lead to complete loss of image. If you don't understand, you better skip this step.

7.Prevention: How to prevent flickering in the future

To avoid recurrence of the problem, follow these guidelines:

• 🔋 Do not let the battery run below 10% – this reduces the risk of voltage surges.
• 📱 Use only original or certified chargers.
• 🛡️ Update regularly MIUI last-minute.
• 🔄 Avoid extreme temperature changes (for example, do not leave your phone in the sun or in the cold).
• 🎮 Do not install heavy launchers or games if your phone is already slowing down.

If you're Redmi. 9A often falls or is subjected to mechanical stress, consider buying a cushioned cover and tempered glass, which will reduce the risk of damage to the display plume.

FAQ: Frequent questions about screen flickering on Redmi 9A