Black bracket on the screen Xiaomi Redmi: why appears and how to remove forever

The black horizontal or vertical bracket on the Xiaomi Redmi screen is one of the most common hardware problems faced by smartphone owners of the brand, and it can appear suddenly after a fall, firmware update, or even for no apparent reason. In most cases, the bracket does not disappear on its own, but can eventually increase in size, blocking part of the display or completely disabling it.

The causes range from software failures to physical damage to the matrix or plume. In this article, we will look at all possible scenarios, from simple solutions (such as rebooting or resetting settings) to complex ones (replacing the display module), you will also learn how to diagnose the problem yourself and when to exactly contact the service center. Importantly, some methods can lead to data loss - back up in advance.

If the bracket is caused by a mechanical impact (hit, fall), it's probably a damaged plume or matrix, and then software won't help, and if the defect is caused for no apparent reason, try software solutions first.

Reasons for the appearance of brackets on the Redmi screen

The black bar (or "bracket") is the area of the display where the pixels stopped receiving the signal from the GPU, and the reasons can be divided into three categories:

• 🔧 Hardware malfunctions: damage to the flexible plume, detachment of the matrix contacts, cracks in the glass or substrate of the display, most often occurs after falls or heavy pressure on the screen.
• 📱 Software failures: errors in the graphics driver, conflicts after the update MIUI, Sometimes a bracket appears after a failed rooting or firmware.
• ⚡ Power problems: unstable voltage on the display line (for example, due to a discharged battery or a damaged power controller.

On the models of Redmi Note 10/11 Pro, Redmi 9/9A and POCO X3, the horizontal bracket at the bottom of the screen is most often found - this is due to the design features of the plume. Vertical stripes are typical for damage to the matrix (for example, after a strong impact on the corner of the screen).

To determine the cause, perform a simple diagnosis:

1. Connect your smartphone to your computer and check if the bracket on the Fastboot screen is displayed (click Loudness down + Power when your phone is off).
2. Try to start the phone in Safe Mode (hold the Power button, then press and hold "Switch off power" until the prompt to go to Safe Mode appears). If the bracket has disappeared, the third-party application is to blame.

Programmatic methods for removing brackets

If the cause isn’t physical damage, try the following methods: They don’t require disassembling the phone and are suitable for most Xiaomi models based on MIUI 12/13/14.

1. Forced reset

Sometimes the bracket appears because of a temporary failure of the graphics driver.

1. Hold the Power button for 10-15 seconds until the screen goes out.
2. Wait 30 seconds and turn the phone on again.

If the bracket has disappeared, but appears again at high load (games, video) - the problem may be overheating of the chipset or battery failure.

2. Resetting settings to factory

This method will delete all data from the phone, but will help if the bracket is caused by firmware errors. First make a backup through Settings → About Phone → Backup.

Save photos and videos to your PC or cloud|

Record logins/passwords from accounts |

Make sure your phone is at least 50% charged |

Untie your Xiaomi account (if you plan to sell your phone)-->

Instructions:

1. Go to Settings → Additional → Recovery and Reset.
2. Select Reset and confirm the action.
3. After you restart, check the screen. If the bracket is still there, it's a hardware problem.

⚠️ Note: On models with a locked bootloader (for example, Redmi Note 12 for the Russian market) after the reset may require re-authorization in the Xiaomi account!

3. Update or roll back firmware

If the bracket appears after the MIUI update, try:

• 🔄 Reverse to the previous version through Settings → The phone. → System update (click on the icon "⋮" in the upper right corner and select "Select the service pack").
• 📲 Install stable firmware through the Mi Flash Tool (requires unlocked bootloader). Download official ROM Xiaomi.

To run through Fastboot, use the command:

fastboot flash all [name file firmware].tgz

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If after firmware the phone does not turn on, try to pinch Volume up + Power for 10 seconds - this will forcibly restart the device in recovery mode.

Hardware methods: when without repair can not do

If the software didn't work, the problem is the hardware.

Critical information: Redmi Note 8 Pro and Redmi K30 models often have a plume defect due to its short length. When replacing the matrix, the wizard must use a reinforced plume (for example, from POCO X3), otherwise the problem will return in 1-2 months.

Self-repair is possible only with the experience and tools (dryer, solder, tweezers), for example, to replace the plume will require:

1. Remove the back cover (heating it with a hair dryer to 80-90 ° C).
2. Disconnect the battery and display module.
3. Replace the plume, pre-cleaning the contacts with alcohol.

⚠️ Warning: When disassembling the Redmi Note 11 and newer, be careful with the battery cable - it breaks easily! Use a plastic mediator, not metal tools.

Diagnosis in the service center: what will be checked?

If you decide to contact a specialist, here is what they should do first:

• 🔍 Checking the plume for micro-breaks with a magnifying glass or microscope, often the damage is not visible to the naked eye.
• 📊 Test matrix on a special stand (signaling directly, without the participation of the processor).
• ⚡ Voltage measurement on the display supply line (must be 3.7–4.2V).
• 🔧 Checking contacts on the motherboard (oxidation or cold soldering).

The cost of diagnostics in official Xiaomi services – from 500 to 1500 ₽. Unofficial workshops may offer free inspection, but the risk of running into unscrupulous craftsmen is higher.Always demand a check and a guarantee (at least 3 months to work).

Example of repair prices (Moscow, 2026):

• Redmi Note 10 Pro: Replacement of the plume – 2500 ₽, matrix replacement - 6,000 ₽.
• Redmi 9A: display replacement - 3,500 ₽ (touchscreen).
• POCO X3 Pro: Power Controller repairs - 4000 ₽.

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If the wizard proposes to replace the motherboard with only brackets on the screen, then this is a reason to doubt his competence. First, the plume, matrix and contacts must be checked!

Frequent mistakes in self-repair

Trying to eliminate the bracket without experience often makes the problem worse.

1. Use of non-original parts, such as cheap Chinese plumes for the Redmi Note 8 last 1-2 months, after which the problem returns.
2. Overheating when soldering. Temperatures above 300°C damage the motherboard contacts. Xiaomi is best positioned to use a soldering station at 260-280°C.
3. Wrong build. If you forget to plug in the touchscreen or the light sensor, the screen will work, but the sensor won't.
4. Ignoring post-repair tests, for example, if you don't check the display in Fastboot mode, you can miss hidden defects.

If you still decide to repair yourself, use original parts (for example, with AliExpress from sellers with a rating of 98%+) and follow the guides on iFixit. For Redmi there are detailed dismantlings with photos for most models.

Prevention: How to avoid the appearance of brackets

Preventing hardware defects is difficult, but you can reduce the risks of:

• 🛡️ Use a high-quality case with shock absorbing corners (for example, Spigen Tough Armor), which will reduce the load on the screen when falling.
• 🔋 Keep the battery from running out of power. 3.4V It can cause a failure of the display controller.
• 📱 Avoid pressuring the screen. Don't put your phone in the back pocket of your jeans or sit on it.
• 🌡️ Don't overheat your smartphone. Temperatures above 50°C accelerates the degradation of the plume. Use a cooling stand for games.

For models with AMOLED-screens (e.g. Redmi) K50) crucially:

• Turn off the display always on (Settings → Screen → Screen lock).
• Reduce the time of autobrightness to 30 seconds.

If you drop your phone frequently, consider a full-coated protective glass (such as the Whitestone Dome) that won’t prevent brackets from appearing when hit hard, but will reduce the risk of matrix cracks.

FAQ: Answers to Frequent Questions