Xiaomi screen strip: why it appears and how to remove forever

The dark or colored stripe at the bottom of Xiaomi’s screen is a common problem faced by owners of both Mi TV/Redmi Smart TVs and the brand’s smartphones, most often after a firmware update, changing screen resolution or connecting external devices, but the reasons can be hardware, from a faulty plume to a factory matrix failure.

Many users mistakenly mistake this band for a matrix defect and carry the equipment to the service center, although in 80% of cases the problem is solved software - literally in 5-10 minutes. In this article, we will analyze all possible causes of the band, from simple (incorrect zooming settings) to complex (damage to the graphics chip), and also give step-by-step instructions for elimination for each case.

If you only see a bar when you view specific content (like YouTube or Netflix), it’s likely the app settings or video format, and if the bar is displayed continuously—on the desktop, on the menu, when you download—this is a systemic problem that requires a comprehensive approach.

Before you start setting up, answer two questions:

1. Did the band appear suddenly or have it been since the purchase?
2. Is it static (not moving) or flickering/changing?

The answers will help narrow down the range of possible causes.

1. Check the basic screen settings

To start with, the simplest of things is that maybe the bar at the bottom of the screen isn't a defect, but a consequence of the wrong display settings. Xiaomi (especially on TVs) often activates zooming or cropping features that can create a black bar visual effect.

On Mi TV/Redmi TV, follow the following steps:

• 🔍 Make sure that your model’s native resolution is selected (e.g, 3840×2160 for 4K-TV).

On Xiaomi/Redmi/POCO smartphones:

• 📱 Open the Settings. → Display. → Image size.
• 🔄 Check if Hide the notch is activated (sometimes it creates a black bar at the bottom).
• 🎯 B Additional settings → Scale return all parameters to factory.

If you have left the band after this manipulation, move to the next section, especially carefully check the settings if the band appeared after connecting a console, game console or computer on HDMI - often the problem lies in the discrepancy between the permissions of the source and the screen.

2. Update firmware and reset settings

The black bar at the bottom of Xiaomi’s screen often occurs after an incorrect software update or a graphics driver malfunction, in which case either a rollback to the previous firmware version or a forced upgrade to the last stable build will help.

For Mi TVs:

For smartphones:

• ⚠️ If the band appeared after the update, try clearing the cache through Settings. → Annexes → Application management → Three dots (menu) → Clear the cache of all applications.

⚠️ Warning: Resetting to factory settings will remove all installed apps, accounts and personal data. Xiaomi TVs may need to re-attach the remote after reset (keep it next to the TV while setting up).

If the problem hasn't gone away, it might be hardware acceleration. On smartphones, try turning it off:

Settings → Additional settings → Developer → Disable hardware acceleration (if option available)

3.Problems with HDMI-ports and external devices

If the bar at the bottom of the screen appears only when other devices are connected to the TV (confix, computer, game console), the problem lies in the incompatibility of resolutions or damage to the cable.

What to check first:

• 🖥️ At the signal source (e.g., on a PC), set the resolution supported by your TV (usually 1920×1080@60Hz or 3840×2160@30Hz).

If the band appears when you connect to a particular port, try using another port. HDMI-Damaged ports are a common problem in Mi models. TV 4S Redmi Smart TV X after 2-3 years of operation.

💡

If the band only appears when watching movies with black fields (for example, in the format 21:9), turn on the option to stretch or zoom in the settings of the TV.

4. Hardware causes: plume, matrix, graphics chip

If the bar at the bottom of the screen is constantly visible (even in the BIOS on a smartphone or on the Mi logo when you load the TV), there is a high probability of a hardware problem.

1. Damage to the matrix plume

Symptoms:

• The strip flickers when you press the screen or change the angle of inclination.
• The color of the strip changes (for example, from black to gray or red).
• Artifacts appear in other parts of the screen.

On Xiaomi smartphones (especially those with curved screens like the Mi 11 Ultra), the plumes often get rubbed over time; on TVs, the problem is typical of thin-framed models (Mi TV Q1E, Redmi Max 98).

Matrix failure

Symptoms:

• The strip is static, does not respond to settings.
• When pressing it with a finger, physical damage (cracks, bloating) is visible.
• The color of the stripe is uniform (for example, completely black or white).

If the matrix is damaged, it can only be replaced. In Xiaomi service centers, the cost of replacing the matrix on TVs starts from 15 000. ₽, on smartphones, from 5,000 ₽.

3.Graphics chip problems

Symptoms:

• The strip appears after the device overheats.
• Accompanied by freezes or reboots.
• The screen shows artifacts in the form of squares or stripes throughout the area.

In this case, the diagnosis of the motherboard is required. On Xiaomi smartphones, the Adreno graphics chip (in Qualcomm processors) often fails, on TVs, the MStar video chip or Amlogic.

⚠️ Warning: If the band appeared after a device fell or fluid was hit, do not try to solve the problem software - this can lead to a short circuit.

5. Features of models: what to do for owners of specific devices

Some Xiaomi models have unique problems with the bar at the bottom of the screen.

Mi TV 4S 55 and Redmi Smart TV X55

In these models, a bug with incorrect processing of the 4K signal is often found.

POCO F3 and Redmi Note 10 Pro

On these devices, the band may appear due to conflict with the MIUI shell.

• 🔄 Install an alternative launcher (e.g. Nova Launcher).

Mi TV Q1/Q2 with OLED-matrix

Nana OLED-In the panels, the bandwidth may be due to the pixel burnout:

💡

On Xiaomi Android TVs, the bar at the bottom may appear from behind the system notification panel. To remove it, turn off the option to Show system notifications in Android TV settings.

Alternative methods: from calibration to service commands

If standard methods don't work, try hidden features and service commands, which require caution, but sometimes solve a problem when nothing else works.

For Xiaomi TVs:

For Xiaomi smartphones:

⚠️ Attention: Service teams and ADB-instructions can disrupt the device if executed incorrectly.

If none of these methods worked, there are two options:

1. Contact the Xiaomi service center (especially if the device is warranty).

FAQ: Frequent questions about the stripe at the bottom of Xiaomi's screen