How to scan. QR-code on the smartphone Xiaomi Redmi 9 Pro

Owners of the smartphone Xiaomi Redmi 9 Pro often face the need to quickly read encrypted information from labels, advertising posters or screens of other devices. Modern mobile technology allows you to turn the camera gadget into a universal reader in a matter of seconds without requiring the installation of additional software. MIUI, the company's proprietary shell, already contains all the necessary tools for this, but they can be hidden from the eyes of the average user in the depth of system settings.

The process of recognizing graphic tags has become the de facto standard for authorization in messengers, paying for purchases and connecting to Wi-Fi. On the Redmi 9 Pro model, this feature is implemented through the Camera system application and a special scanner in the Security interface. Understanding the nuances of the operation of these tools will save you time and avoid errors when entering data manually.

In this article, we will take a closer look at all the ways to activate the scanner, adjust the recognition options, and look at the possible problems that arise when using this feature, learn how to optimize the camera to read corrupted codes and what alternative methods exist for owners of Android devices.

Use of built-in scanner in the Camera application

The fastest and most obvious way to count a square barcode on the Redmi 9 Pro is to use a standard camera app. Xiaomi's developers have integrated the recognition module directly into the viewfinder interface, which saves the user from having to search for individual icons in the menu. However, by default, this feature can be disabled or work incorrectly due to artificial intelligence settings.

To activate the mode, you need to launch the Camera app and pay attention to the top of the screen, and there is a menu bar with different modes of shooting, such as Photos, Videos, etc. Among them, you should find an icon signed as Scanner or having a characteristic icon of a square with lines, and if you switch to this mode, the system will automatically begin to analyze the image in real time.

⚠️ Note: In some regions or firmware versions MIUI Scanner mode may not be available in the camera's quick access, in which case you need to check the settings of the application itself or use an alternative method through the control center.

Once the lens is pointed, it automatically recognizes. If the code contains a link, a pop-up notification will appear on the screen asking you to go to the address. For text data or contact information, vCard will suggest saving the entry to the phone book. It is important to keep the device still while focusing, since the Redmi 9 Pro features macro photography, which can sometimes mistakenly switch to close objects, blurring the image of the code.

Setting up Google Lens for Advanced Search

An alternative to the standard tool is Google Lens, which is pre-installed on all certified Android smartphones, which has more powerful machine learning algorithms, allowing you to read even heavily damaged, inverted or printed on crumpled paper codes that can not cope with the standard Xiaomi camera.

There are a number of ways to launch Google Lens, and most often, the lens icon is located right in the Google search widget on the desktop or in the search bar, and you can access the feature through the Google Photos app by opening any image and selecting the appropriate option, which is especially useful if you have received a screenshot of the code in the messenger, and you do not want to open links in the browser.

Google Lens is more than just a link reader, and it can:

• 🔍 Recognise text from photos and translate it in real time.
• 🛒 Find products in online stores by image of packaging.
• 📞 Scan business cards and automatically save contacts.
• 📐 Measure objects in the real world with augmented reality.

For Redmi 9 Pro owners, using this tool could be a more robust solution in challenging lighting conditions.Google's algorithms better cope with glare and low contrast by automatically adjusting the image before decoding.

Activation of the scanner through the Security Center

In the MIUI ecosystem, there's a separate system application called Security that combines antivirus, memory cleanup and other utilities, and that's where one of the oldest and most proven code scanners works regardless of the camera settings, and it's "heavy artillery" for when other methods fail.

To use this method, look for a green icon on your desktop with a shield and lightning symbol. Inside the application, you need to scroll through the available tools to the scanner section. Here the interface is as simple as possible: a large viewfinder window and a switch button between modes «QR-This module is often updated separately from the main system, which ensures the relevance of malicious link databases.

Path to function: Security → Scanner → getting stuck to code

The main advantage of this method is increased security: before clicking on a link, the MIUI system checks the address in the cloud database of antivirus. If a site is marked as phishing or containing malware, the user will receive a red warning with the recommendation to refrain from clicking, which is critical when scanning codes from unknown sources.

Adding a quick scan widget to the desktop

For those who use QR-codes daily, constantly opening apps and finding the right icons can be an annoying factor. Android allows you to create shortcuts-widgets that run the scanner in one click, bypassing unnecessary steps of navigation. This greatly speeds up the process of interacting with the digital world.

You can create this shortcut through the widget menu, you can either pinch the empty space on your desktop or pinch it with two fingers to go into editing mode, and you can select "Widgets" from the menu that opens, and you can find "Scanner" or "Camera" from the list, and drag the desired item to the free area of the screen.

However, there is a more advanced way available in newer versions of MIUI: You can create a shortcut that will run the scanner at once in a certain mode, for example, only for payment or only for links, this allows you to customize the desktop to your habits, creating multiple icons for different use cases.

⚠️ Note: When adding widgets, keep an eye out for free screen space. Too many active widgets may slightly increase the battery consumption of the Redmi 9 Pro in standby mode.

The Quick Scanner widget is especially convenient when the phone is locked, and some settings allow the scanner to be launched even from the screen off by double tapping or through the sidebar, if this feature is supported by the current firmware version.

Comparison of scanning methods: Table of possibilities

To choose the best way to suit your situation, it is helpful to compare the characteristics of the different tools available on the Xiaomi Redmi 9 Pro. Each method has its own strengths and limitations, which become noticeable when used actively.

Below is a comparison table showing the key differences between embedded solutions:

As you can see from the table, for everyday use, when you need to quickly pay for a purchase in a store or open a menu in a restaurant, a standard Camera is best suited. If you work with archives, old documents or questionable sources, you prefer to use Google Lens or the security module.

It’s also worth noting that third-party apps from the Play Market can offer additional features like cloud-sync scan history or creating your own codes in a complex structure.

Problem Solving and Troubleshooting

Despite the system’s debugging, Xiaomi Redmi 9 Pro users may encounter situations where the scanner refuses to work, most often the problem lies not in the hardware, but in software conflicts or lack of permissions.

The first thing to check is the app permissions. If Camera or Security doesn't have access to the camera, scanning will be impossible. Go to Settings → Apps → All apps, find the app you want and make sure the Camera switch is activated. Sometimes, after a MIUI update, these settings can be reset.

The second common problem is poor lighting or glare. The smartphone matrix, despite its good performance, may not be able to cope with contrast light. In such cases, it is recommended to change the angle of the phone relative to the plane of the code. The optimal angle is considered to be 45 degrees, which avoids direct reflections of the flash or lamps into the lens.

If the camera sees the code but nothing happens, perhaps the encoding format is not supported by the system, which is rare, but happens with self-written or industrial-specific codes, and then installing a dedicated decoder application that works with raw flow data will help.

⚠️ Note: Never follow links obtained from QR-Intruders can paste their code over the original code, redirecting you to a phishing site to steal bank card data.

Also worth mentioning is the problem with macro photography. 9 Pro when holding the phone too close (less than a few) 3-4 (cm) the camera can automatically switch to a macro lens, which often has no autofocus or has a fixed focal length. 10-15 centimeter.

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Use a flashlight! At night, turn on the flash through the camera interface, which not only illuminates the code, but also helps the camera faster than the boundary of the black and white pattern, speeding up recognition.

Frequently Asked Questions (FAQ)

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The built-in MIUI tools provide a sufficient level of functionality and security for 99% of scanning tasks, making installing third-party software a redundant measure for the average user.