How to scan. QR-code for Xiaomi Redmi Note 9

Modern smartphones have long become universal tools, and Xiaomi Redmi Note 9 is no exception. One of the most popular features is the ability to read two-dimensional barcodes for quick payment, Wi-Fi connection or clicking on links. Many users mistakenly believe that it is necessary to download third-party software, but the built-in functionality of MIUI allows you to do this natively.

The scanning process on these devices is as simple as possible for developers, but it can be hidden in different parts of the interface. Understanding where the barcode scanner is located will save you time in critical situations, such as paying in a store or entering a public place. In this article, we will discuss in detail all the available ways to activate the camera for reading matrix codes.

Owners of Redmi Note 9 should remember that the software is constantly updated, and the location of functions may vary from version to version. MIUI We'll look at the current methods for Android 10, 11 and 12 that are installed on most devices in this line. QR-Technology – the basic skill of a modern smartphone user.

Built-in MIUI camera capabilities

The most obvious and quick way to activate the scanner is to use the standard Camera app. In the MIUI shell that the Redmi Note 9 has, the image recognition algorithms are built directly into the viewfinder. You don't have to search for separate menus, just point the lens at the code, and the system will suggest the action.

However, automatic recognition can be disabled by default or not work properly in low light. To make sure the feature is active, open the camera app and find the "AI" icon or "Scanner" in the top corner of the screen. Pressing this element puts the camera in a special mode where QR recognition is prioritized.

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If the camera does not respond to the code, try to change the distance to the object: move the phone 10-15 cm or, conversely, bring closer to focus on the details of the matrix.

It is important to note that in some regions or firmware versions, this button may be called differently or appear as a square with stripes. If the standard photo mode does not read the code instantly, switching to Document or Text mode sometimes helps improve the contrast and clarity of the image for the algorithm.

Using the “Scanner” widget on the desktop

In the Xiaomi ecosystem, there's a separate system application called the Scanner, which is often hidden in the Tools folder on the desktop, and it's faster and more stable than the normal camera mode, because it's designed to read barcodes of any format.

For maximum convenience, you should display the scanner icon on the home screen or in Unclosed Applications, which will allow you to run the function in one touch, bypassing a long search on the menu. The algorithm here is simple: launch the application, hover the camera, and the link or text is read instantly.

• 🔍 Find the Tools folder on your Redmi Note 9 desktop.
• 📲 Open the app with an icon resembling a square code.
• ⚙️ When you first start, give the necessary permissions to access the camera.
• 🎯 Point the lens at the object to read the data.

If you can’t find a standard app, it may have been removed or hidden during system optimization, in which case it can be easily returned via settings or downloaded from the Google Play store, although the system option usually works better thanks to deep integration with MIUI.

Configure quick access through the sidebar

The MIUI shell offers a unique feature called Sidebar (or Toolbar) that is a floating menu that can be swiped from the edge of the screen in any app, and by adding a scanner shortcut, you can read codes from the comfort of your browser or messenger.

To set up this tool, go to the phone's settings. The path usually looks like: Settings → Special Features → Application Sidebar. Here you need to activate the switch and select the applications for which the panel will be available. You'd better choose "All Apps" for versatility.

⚠️ Warning: Don't add too many apps to the fast list, otherwise the panel will become bulky and uncomfortable.

Once activated, the swipe from the top or bottom corner of the screen (depending on the settings) will call a menu where you can select "Scanner," which is especially convenient when you are in correspondence and you have an image of the code sent to you, or read an article with a link as a picture.

Scanner through the control center and widgets

Another effective method is to use widgets on the desktop. Unlike app shortcuts, widgets can come in different sizes and functionality. The Xiaomi Redmi Note 9 has a Quick Access widget that often contains a scan button.

You can add a widget by tapping it over a blank space on your desktop and selecting "Widgets." In the list, find the "System Tools" or "Security" category, which often hides the right control, and dragging it onto the screen will give you instant access to the feature.

Also worth checking is the Control Center, which is called by swipe down from the top right corner. In the extended Quick Settings menu, you can sometimes find a scanner icon. If you don't have one, click on a pencil (edit) and drag the icon from the list of available to the active zone.

Third-party applications for complex cases

While Xiaomi’s built-in tools cover 95 percent of the needs, there are times when a standard scanner fails, whether due to corrupted code, low contrast, or the use of rare data encryption formats, and third-party solutions come to the rescue.

There are many apps on the Google Play store, such as Gamma Play’s “QR & Barcode Scanner” or Kaspersky’s counterparts, which often provide an extended scan history, batch readability, and more flexible flash settings.

When installing third-party software, carefully monitor the permissions requested. The scanner only needs access to the camera. If the application requires access to contacts, microphone or geolocation without an obvious need, this is a suspicious signal, and it is better to refuse to use such software.

Solving problems in scanning

Even on a device as productive as the Redmi Note 9, there can be failures, the camera may refuse to focus, or the system will not recognize the code, although it is clearly visible on the screen, most often the problem lies in the contamination of the lens or incorrect exposure settings.

The first thing you need to do is wipe the camera with a soft cloth, and the fatty stains on your fingers create a light scattering effect that prevents the algorithms from building a clear picture, and if that doesn't work, try manually adjusting your focus by tapping the screen into the code area.

• 🧹 Wipe the camera lens with a microfiber.
• 💡 Turn on the flash in poor lighting conditions.
• 🔄 Restart the device if the camera freezes.
• 📱 Make sure there is no protective film with strong glare on the screen.

⚠️ Warning: Never try to count. QR-codes from dubious sources, like flyers on the street, and criminals can encode a link to a phishing site that steals your data.

If the camera stopped working at all, check if access to it is blocked in the privacy settings. MIUI has a Privacy Protection feature that can block access to applications. Go to Settings → Privacy Protection → Permissions Management and check the status of the camera.

Frequently Asked Questions (FAQ)

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The built-in tools of Xiaomi Redmi Note 9 fully cover the needs of the average user, making the installation of additional software unnecessary measure.