How to install wallpaper from the gallery on Xiaomi Redmi 9: 3 working methods + error solving

Installing wallpaper from a personal gallery on Xiaomi Redmi 9 seems like an easy task, but many users face unexpected difficulties: the system does not see the photo, the picture is cropped or blurred, and sometimes there is no option “Install as wallpaper”. MIUI, which restricts access to certain features depending on the firmware version and regional settings.

In this article, we will look at three proven ways to install wallpaper from the gallery, including bypassing standard MIUI restrictions, and look at typical errors and their solutions. We will focus on the problems with the Redmi 9 screen resolution (720×1600 pixels) and optimal size of the original images. If you want the background of the desktop to look clear and distortion-free, read on.

Image Preparation: Optimal Sizes and Formats

Before you set the wallpaper, it is important to prepare the image itself. Xiaomi Redmi 9 has a screen with a resolution of 720×1600 pixels and an aspect ratio of 20:9. If your photo does not meet these parameters, the system will automatically trim or stretch it, which often leads to loss of quality.

Recommended parameters for wallpaper:

• 📏 Permission: minimum 1080×2340 pixels (for margins) Optimal — 1440×3120 perfect.
• 🖼️ Format:.jpg (for photos) or.png (for transparency images). Avoid.webp — MIUI It may not be properly handled.
• 🎨 Color profile: sRGB (standard) Images in Adobe RGB or ProPhoto RGB may be dimly displayed.

If your photo is less resolution, use programs to zoom in without loss of quality, such as Waifu2x or Topaz Gigapixel AI. Any graphics editor, including the standard Gallery app on Redmi 9, will suit for cropping under the ratio of 20:9.

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To avoid blurring when zooming, keep the original photo as high as possible. MIUI compresses wallpaper when installed, but the more pixels you have, the less visible the artifacts are.

Method 1: Standard installation through the Gallery appendix

The most obvious method is to use the built-in Gallery app, but there are some nuances: in some versions of MIUI, the "Set as Wallpaper" option is hidden or not working correctly.

1. Open the Gallery app and select the desired image.
2. Touch the badge. ⋮ (three points) in lower right corner.
3. In the menu, select Set How → Wallpaper.
4. On the preview screen: 🔄 Use two fingers to zoom in and move the image. ✅ Click Ready or Apply (depending on version) MIUI).

If you don't have wallpaper on the menu, your version of MIUI limits this function. Go to Method 2.

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Method 2: Installation via "Themes" (if the standard method does not work)

When wallpaper installation is not available in the Gallery, you can use the Themes app, which works even on custom firmware and older versions of MIUI.

Instructions:

1. Download any free theme creation app, like Zedge or WallpapersCraft.

Important: When using this method, MIUI can automatically crop the wallpaper to the theme pattern. To avoid distortion, pre-cut the photo manually to a ratio of 20:9.

Method 3: Manual replacement of wallpaper files (for power users)

If the first two methods didn't work, you can manually replace the wallpaper files in the system folders, which requires root or ADB permission, but gives you full control over the result.

Step-by-step:

1. Connect Redmi 9 to your PC and enable USB Debugging (Settings → About Phone → MIUI Version → 7 times press to unlock the developer options).
2. Download ADB Tools to your computer and open the command line in the folder with utilities.
3. Enter the commands: adb shell su mount -o rw, remount /system
4. Copy your image to the system folder of wallpaper: adb push /path/to/your/wallpaper.jpg /data/system/users/0/wallpaper Replace /path/to/your/wallpaper.jpg with the real path to the file.
5. Reset the device.

⚠️ Attention: Misuse of the right ADB This can cause system failures. Before executing commands, back up your data through Settings. → Additionally. → Backup and reset.

Solving common problems

Even after a successful wallpaper installation, Redmi 9 users may face a number of challenges, including the most common ones and how to fix them.

1. Wallpaper blurred or pixelated

Reason: MIUI automatically compresses wallpaper to screen resolution, so if the original image is of poor quality, the artifacts become visible.

• 🔍 Solution: Use source materials with at least a resolution 1440×3120.
• 🛠️ Alternative: Turn off compression through ADB: adb shell settings put global wallpaper_compress false

2. Wallpaper is cut at the edges

Reason: The aspect ratio of the original image does not correspond to 20:9.

• ✂️ Solution: Cut your photo manually in any editor (e.g. Snapseed or Lightroom).
• 📱 Quick way: In the standard Gallery, when installing wallpaper, use two fingers to zoom in.

3. Wallpaper is dropped after reset

Reason: Launcher failure or conflict with MIUI optimization

• 🔄 Solution 1: Install a third-party launcher (e.g. Nova Launcher or Lawnchair).
• 🗑️ Solution 2: Clear the Topic app cache (Settings) → Annexes → Application management → Topics → Warehouse → Clear the cache).

Optimizing wallpaper to save battery power

The dark wallpaper reduces energy consumption by AMOLED-screens, but the Redmi 9 is equipped with IPS-It's a matrix where background color doesn't affect battery consumption:

• 🌑 For AMOLED: Use dark or black wallpaper (if you plan to switch to a model with a new model). AMOLED-screen).
• 🔋 For IPS (Redmi 9): Give up animated wallpaper (GIF/Live wallpaper – they increase the load on the processor.
• 🎨 Universal Tip: Avoid wallpaper with fine details and texture – they make the screen work at maximum brightness for clarity of display.

To check the impact of wallpaper on autonomy, use built-in battery monitoring:

1. Go to Settings → Battery and Performance → Battery Use.
2. Click on the chart and select Details.
3. Compare the amount of money spent before and after the wallpaper change (especially if you used live wallpaper).

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Redmi 9s. IPS-The color of the wallpaper does not affect battery consumption, but animated background images can reduce autonomy by 5-15%.

FAQ: Frequent questions about installing wallpaper on Xiaomi Redmi 9