Black bar at the bottom of the screen Xiaomi: how to remove on TV and smartphone

The black bar at the bottom of Xiaomi devices is a common problem faced by owners of both smartphones (Redmi, POCO, Mi) and TVs (Mi TV, Redmi Smart TV), which can be caused by software failures, incorrect zooming settings or hardware limitations, and can be removed without going to the service center, but it is important to first determine the cause.

In this article, we will look at all the possible ways to eliminate the bandwidth, from basic settings to hidden engineering menus, and we will focus on the differences between TV and smartphone solutions, because the algorithms for these devices are fundamentally different. If you only see the black bar in certain applications (for example, YouTube or Netflix), the problem is likely to be the settings of the app itself, not the system.

Before you start fixing, check if the band is part of the interface. For example, on Xiaomi TVs with Android TVs at the bottom, a control panel (with home, back, etc. buttons) can be displayed, which disappears after a few seconds of inactivity. If the band is static and does not disappear, read on.

1. Causes of the appearance of black stripe on the screen Xiaomi

The strip at the bottom of the screen rarely occurs on its own, usually preceded by specific user actions or system failures.

• 📱 Overscan – More common on TVs where the image is cropped at the edges.
• 🔧 Update firmware - after the update, display parameters may be lost, especially on older models (Mi) TV 4A, Redmi Smart TV X55).
• 🎮 Game monitor mode – activated automatically when connecting consoles (PS5, Xbox) and cut the edges.
• 🛠️ Hardware restrictions on budget models (Redmi) A1, POCO M3) the band may be due to a fault of the plume or matrix.
• 📺 Permission incompatibility – if the source of the signal (e.g, HDMI-set-top box) transmits permission not supported by the TV.

On Xiaomi smartphones, the black bar is most often due to the activated navigation bar (virtual buttons Back, Home, Recent). In recent versions of MIUI, it can be hidden, but on some models (Redmi Note 8 Pro, Mi 9T) this requires editing system files.

⚠️ Note: If the strip appears after a device falls or moisture is ingested, do not attempt to eliminate it programmatically.This may be a sign of detachment of the matrix plume - in this case, repairs are required in the service center.

2. How to remove the strip on the Xiaomi TV (Mi TV, Redmi TV)

On Xiaomi TVs, the black bar is usually associated with the overscan settings, which can be fixed through the standard menu or engineering settings, starting with the simplest way.

Method 1: Disabling the "Game Monitor" mode

If you connect a game console or PC to your TV, the system can automatically activate Game Mode, which cuts the edges to reduce latency.

1. On the remote, press the Menu button (or Settings on new models).
2. Go to Settings → Image → Image Mode.
3. Choose Standard or Movie instead of Game.
4. Save the changes and check if the streak has disappeared.

Method 2: Scaling Configure (Overscan)

If the band remains, try adjusting the overscan settings:

1. Open Settings → Display and sound → Additional settings.
2. Find the image scale (or screen size on older models).
3. Choose Full Screen or No Trimming.
4. If you don’t have an option, go to Settings → Device → Device → About → Software Version and press 5 times on the Software Version to unlock the engineering menu.

Remember the current brightness and contrast settings

Disconnect all external devices (configures, receivers)

Use the Xiaomi remote (not universal)

Check that the TV is connected to the Internet (to reset settings)

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In the engineering menu, look for an HDMI Scaling or Display Area setting and set 0 for all fields (Left/Right/Top/Bottom).

Method 3: Change the resolution of the signal source

If the band only appears when connected via HDMI (for example, from a console or computer), the problem may be incompatibility of permissions.

• 🖥️ On PC: Go to Screen Settings → Permission and select 1920×1080 (full HD televisions) or 3840×2160 (for 4K).
• 🎮 On the console: in the video settings (PS5: Settings → Screen and Video → Resolution: Install Automatic.
• 📺 On TV: C Settings → Entrances → HDMI-Select mode PCM Bitstream (if the band is accompanied by a lack of sound).

3. strip removal on Xiaomi smartphones (Redmi, POCO, Mi)

On Xiaomi smartphones, the black bar at the bottom of the screen is most often associated with the navigation bar (virtual buttons) or gestures. In recent versions of MIUI, it can be hidden, but some models will require editing system files.

Method 1: Hiding the navigation bar

If you have virtual buttons (Back, Home, Recent) displayed, you can remove them:

1. Open the Settings → Display.
2. Select Full-screen Display (or Navigation buttons on older versions of MIUI).
3. Activate Gesture Mode or No buttons.
4. Reboot your phone to make the changes take effect.

On some models (POCO F3, Redmi Note 10 Pro) there is a thin black stripe left behind, which is a hardware feature (sensor area) that can only be removed completely through ADB (see Method 3).

Method 2: Scaling up in Safe Mode

If the band appeared after installing the application, start the phone in safe mode:

1. Press the power button before the turn off menu appears.
2. Press and hold Disconnect Power → a suggestion will appear to go to Safe Mode.
3. Confirm the transition. The phone will reboot with third-party apps disabled.
4. Check if the band has disappeared. If so, delete the newly installed programs.

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If the band is still in safe mode, check if the mode for the visually impaired is activated (Settings → Special features → Scale). Turn it off if it is on.

Method 3: Editing system parameters through ADB

For advanced users, if the band remains even after the navigation bar is turned off, it can be removed via ADB (Android Debug Bridge), which only works on smartphones with the bootloader unlocked and can lead to a loss of warranty.

Instructions:

1. Turn on USB Debugging in Settings → About Phone → MIUI version (click 7 times on the version to become a developer).
2. Connect your phone to your PC and execute the command: adb shell settings put global policy_control immersive.full=*
3. Reset the device.

If the navigation gestures are missing, return them with the command:

adb shell settings put global policy_control null*

⚠️ Attention: Misuse of the right ADB It can cause data loss or lock the device. Before executing commands, make a backup through Settings. → Additionally. → Backup.

4. Hardware reasons and when to contact the service

If none of the software methods worked, the problem could be hardware, and here are some signs you should contact a service center:

• 🔧 The strip appeared after the device was hit or fell.
• 💧 Telephone or TV exposed to moisture.
• 📱 On the screen you can see divorces, broken pixels or color distortions.
• 🔄 The strip blinks or changes size when pressed on the body.
• 🔌 On TV, the band appears only on a certain HDMI-port.

Average cost of repairs for hardware faults:

Xiaomi TVs are most often broken down HDMI-If the band only appears when you connect through a particular connector, try using another port. If the problem persists on all ports, it's a sign of a scaling processor malfunction (requires a motherboard replacement).

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Before contacting the service, check the warranty status of the device through the official Xiaomi website (mi.com/global/verify). Repair warranty will cost free if the band appeared through no fault of yours.

5. Frequent mistakes when trying to remove the strip

Many users compound the problem by following questionable advice from the Internet.

• 🔨 Disassemble the device yourself - without special tools you risk damaging the plumes or matrix.
• 🔥 Heat the screen with a hairdryer - this can lead to detachment of the liquid crystal layer.
• 📲 Install unofficial firmware - on TVs this deprives of warranty and can "brick" the device.
• ⚡ Reset settings via Recovery without backup – you’ll lose all data.
• 🛠️ Use software to repair the matrix – they often contain viruses and do not solve hardware problems.

Also, don’t trust the “magic commands” from the Internet like ##3644633## – on modern Xiaomi devices they do not work and can cause a system failure.

6.Prevention: How to avoid the appearance of a strip in the future

To prevent the bar at the bottom of the screen from reappearing, follow these guidelines:

• 📦 Update the firmware - in new versions MIUI Android TV Frequently corrected bugs with display.
• 🔌 Use quality cables – cheap HDMI-Cables can cause artifacts on TV.
• 🎮 Turn off Game Mode if you don’t play – it not only cuts the screen, but also increases the wear of the matrix.
• 📱 Do not install themes from unverified sources – they can knock down the interface settings.
• 🔄 Reset your TV settings periodically (every 3-6 months).

On smartphones, avoid using apps to change DPI (pixel density) — they often break the interface scaling. If you need to resize items, do so through standard settings: Settings → Display → Text Size.

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On Xiaomi TVs, it is useful to turn off the energy-saving mode (Settings → Eco-mode), as it can distort colors and crop the edges of the image.

FAQ: Frequent questions about the black stripe on Xiaomi