Xiaomi smartphone owners often face the desire to personalize the device, making it not just a utilitarian gadget, but a reflection of their own style. Wallpaper carousel is one of the most spectacular tools in the shell of MIUI, which allows you to automatically change the background image of the lock screen every time you wake up the device. On the Redmi Note 9 model, this feature is implemented quite flexibly, but has its hidden activation nuances that are not always obvious to beginners.
Unlike a standard gallery, where the image is static, the carousel is a dynamic stream of content that is uploaded from the manufacturer's cloud services or downloaded manually by the user. This creates a feeling of a "live" interface that is updated without human intervention. It is important to understand that this functionality is closely integrated with the system components of Themes, and its operation depends on the correct network settings and the region chosen in the system.
Next, we’ll take a closer look at all the steps of activation, from basic settings to advanced content management techniques, how to avoid common bugs when the carousel stops updating, and how to get the system to show exactly the images you’re interested in, rather than random advertising.
What is a wallpaper carousel and how does it work in MIUI
Technically, the wallpaper carousel is a dedicated service plugin built into Xiaomi’s system launcher, which is designed to periodically check servers for new images and then install them as a background to the lock screen. Unlike live wallpaper, which consumes significant CPU and battery resources, the carousel consumes minimal charge, activating only when the screen is turned on or on schedule.
The algorithm works quite simply: the system accesses categorized databases where images are sorted by subject matter (nature, architecture, abstraction, cars), and the user can choose one or more categories that will form his personal tape. Redmi Note 9, with the following IPS-screen with good color reproduction, perfectly demonstrates high-quality photos in high resolution.
⚠️ Warning: Wallpaper carousel requires a constant internet connection to upload new images. If you are roaming or using a limit tariff, it is better to upload image packets in advance via Wi-Fi or disable automatic updates.
It is worth noting that the management interface may differ slightly from one version of MIUI firmware (Global, EEA, China), but the logic remains the same: content is uploaded through the Themes system application and displayed with the system lock component, which means that removing standard Xiaomi applications can lead to a feature being disabled.
💡
Use high-resolution images for the carousel so that they look as clear as possible on the Redmi Note 9 screen and do not lose quality when zooming.
Basic activation of the function through screen settings
The easiest and most obvious way to enable a change of pictures is to use the standard smartphone settings menu, which is suitable for most users who want to quickly activate the feature without going into technical details.
In the menu that opens, you should scroll down to the look section. Depending on the version, the language pack can be called differently, but it's usually Always on and Lock screen. This is where you have all the controls on what you see before you enter the unlock password.
Inside this menu, you'll find the switch for wallpaper carousel or wallpaper change. Once the slider is activated, the system will suggest you select the source of the images. The default is "Recommended," but the list can be expanded. When you click on the selection, you'll see a list of available categories.
☑️ Activation of the carousel
After selecting categories, you need to confirm the action. The system can request permission to use the data if it is the first time. Agree to the request so that the service can download new content. Now, turning off the screen and turning it on again in a few minutes, you should see a new image if the network connection is active.
Setup through the “Themes” app
More flexible content management is possible through the Themes system application, which gives you access to advanced functionality that is hidden in the usual settings. Launch an application with a brush or package icon, usually located in the Tools folder or on the home screen.
At the bottom of the app interface, look for the Profile tab or the little man icon, and in the menu that opens, you'll find the Wallpaper Carousel, and it's much richer, so you can see previews of images, manage subscriptions to specific authors, and adjust the change rate.
Inside the carousel settings section, look at the Settings button. Here you can see important settings:
- 📶 Network: the ability to allow or prohibit downloading via mobile data (it is recommended to use only Wi-Fi to save traffic).
- 🔄 Frequency: adjusting the shift interval (with each switching on, once per hour, once per day).
- 📂 Folder: Selecting a specific folder in the device’s memory if you want to use your photos.
You can also turn on the “Receive Notifications” option here, which will allow the system to send push notifications about new interesting collections, but can annoy those who appreciate silence. For the Redmi Note 9, it is important to make sure that in the background the application is not “killed” by the energy saving system, otherwise the carousel will stop updating.
Hidden categories
Use of your own photos and gallery
Standard images can get boring quickly, and this is where personal shots come in. The Redmi Note 9 has a pretty good camera, and many users want to see their photos on the lock screen. The mechanism for working with user-generated content is different from the cloud.
To activate this mode, go back to the carousel settings via Themes. From the source list, select My Photos or Gallery. The system will offer storage access. It's important to understand that in this mode, the carousel will work locally, without accessing the Internet.
You can choose a particular album or individual images. The algorithm will randomly select a photo from a selected sample every time you turn on the screen. This creates the effect of a personalized digital frame. However, there is a nuance: horizontal photos can be cropped or scaled incorrectly, because the screen of the smartphone is vertical.
| Type of source | Network requirement | Battery consumption | Control of content |
|---|---|---|---|
| Online (Recommended) | I'll be sure. | Medium. | Low (random sample) |
| Local gallery | Not required | Low. | Complete (you choose) |
| Subscriptions (Themes) | I'll be sure. | Medium. | Medium (by topic) |
| Third-party widgets | Depends on the app. | High-pitched | Depends on the app. |
When using your photos, make sure they have sufficient resolution, with a minimum recommended width of 1080 pixels to avoid the soapiness of the image on the Redmi Note 9 matrix.
Troubleshooting: Carousel is not working or updated
Quite often, users are faced with a situation where the function seems to be on, but the picture does not change for days. The most common reason is aggressive battery optimization in MIUI. The system can force the background process of updating the wallpaper to save energy.
To fix this, go to Settings → Battery and Performance. Find Wallpaper Carousel or Themes in the list of apps and set No Limits mode, which will prevent the system from putting down an important service for you.
The second reason is crowded cache, and over time, temporary files may conflict with new data, and you need to clear the cache of the application.
- 🗑️ Go to Settings. → Annexes → All applications.
- 🔍 Find in the list of "Carousel wallpaper».
- 🧹 Click Clear and select Clear Cache (not data unless you want to reset your settings).
⚠️ Note: If you reset the carousel app data, all your selected categories and update frequency settings will return to factory values and will have to be reconfigured.
Also, the problem may be the wrong date and time, make sure that the settings are automatically synchronized over the network, and a time difference of even a few minutes can cause a security certificate error when connecting to Xiaomi servers.
💡
90% of problems with updating the carousel are solved by removing the restrictions of background activity in the battery settings or cleaning the cache of the system application Themes.
Frequent questions and additional settings
Despite its apparent simplicity, the feature has a number of hidden features, such as many people who don't know that you can turn off the display of captions for photos or descriptions of shooting locations if they interfere with the perception of widgets, this is done in the depth of the carousel settings, often hidden in a three-dot menu.
Another important aspect is compatibility with widgets. On the Redmi Note 9, large watch widgets can overlap important parts of the image. In the carousel settings, the option “Swift Image” or “Smart Framing” is sometimes available, which analyzes the position of the widgets and shifts the picture so that the person’s face or the center of the composition is not closed with numbers.
Security is also important. As the carousel downloads content from the network, there is theoretically a risk (though minimal) of downloading malicious scripts through vulnerabilities in the image parser. Always update your smartphone firmware to the latest available version to close security holes.
In conclusion, the merry-go-round setting turns a boring lock screen into inspiration: Experiment with categories, combine your photos with professional shots, and don’t be afraid to change settings to find the perfect balance between aesthetics and functionality of your Xiaomi.