Modern smartphones Xiaomi has become universal tools for interaction with the digital world, and one of the most popular functions is working with two-dimensional barcodes. Users often face the need to quickly read information from the label of the product, the menu of the restaurant or the advertising poster, but do not always know where exactly the desired option is hidden in the shell of MIUI or HyperOS. Unlike the “pure” Android, the system from the Chinese manufacturer has its own interface features and the logic of the built-in utilities.
In this article, we will discuss in detail all available reading methods. QR-codes on Xiaomi devices, ranging from standard system tools and ending with third-party solutions. You will learn how to activate hidden camera settings, why the scanner sometimes doesn’t see the code, and which apps do the best job if standard methods fail or cause crashes.
Special attention will be paid to security issues, since two-dimensional codes can contain not only links to sites, but also executable code for automatic actions. Understanding the principles of the scanner will help you avoid switching to phishing resources and protect personal data from leakage when using public access points or unknown sources of information.
Use of built-in scanner in the Camera application
The most obvious and quick way to read the code is to use the Camera app, which is pre-installed on every smartphone of the brand. In the latest versions of the MIUI shells and the new HyperOS, image recognition algorithms are significantly improved, allowing you to read data almost instantly after pointing the lens. However, in order for the function to work correctly, you need to make sure that the camera settings are activated with the appropriate artificial intelligence module.
To activate, open the camera app and find an icon in the top or side menu that resembles a square with dots inside or an inscription AI. Clicking on this element opens a menu with additional features, where the Scanner switch must be present or "QR-If the slider is turned off, the system will not analyze the image in real time, and you will have to take a picture for further analysis.
⚠️ Note: In some regions, firmware (e.g. Global) ROM) The feature can be called “Google Lens” or be integrated into the search widget rather than the native Xiaomi crawler.
If the standard mode doesn’t work, try switching to Photo or Video mode, as in specialized modes like Portrait or Night, the scanner can be software-disabled by developers to save CPU resources. Also make sure the camera lens is clean, as bold spots often interfere with algorithms focusing on the small details of the barcode.
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Wipe the camera with a soft cloth before scanning – even microscopic contamination can reduce the contrast of the image needed to recognize complex codes.
The reading process takes a fraction of a second: once the frame captures the code, a pop-up notification with the content will appear on the screen. If it is a link, the system will suggest clicking on it; if the text is copied to the clipboard, this integration makes working with the camera as convenient as possible for everyday tasks without the need to run unnecessary programs.
System application "Scanner" and its functions
In addition to the camera, Xiaomi users have a separate system application called the Scanner, which is usually located in the Tools folder on the desktop and is a more powerful tool that is designed specifically for working with codes and documents. Unlike the camera, there are no unnecessary exposure settings or filters, which allows you to focus solely on reading information.
When you launch the app, you'll see an interface with multiple tabs or buttons to choose the type of scan you want, and the main advantage of this tool is that it supports batch processing and different data formats, and it can not only open links, but also recognize products in stores, translate text, copy contacts from business cards, and even solve mathematical equations photographed from the screen.
- 📷 Smart Recognition: Automatic Content Type Determination (URL, text, Wi-Fi, goods) without manual switching modes.
- 🛒 Product search: Integration with marketplace databases to search for analogues and compare prices by image of packaging.
- 📄 Working with documents: Ability to scan documents in PDF Automatically aligning borders and improving readability of text.
An important feature is the ability to work with scan history, all previously read codes are stored in the application memory, which allows you to return to the right link or product number after a while, even if you did not click on them immediately, this is especially useful when visiting exhibitions or stores where you need to compare many positions.
For users who often work with large amounts of data, the app offers a Documents mode that uses HDR algorithms to eliminate glare from glossy paper, making the Scanner an indispensable tool not only for household needs, but also for office work, allowing you to quickly digitize paper media right in your phone.
Activation of scanning through the Control Center
For those who prefer minimalism and speed, Xiaomi has provided the ability to add a scanner button to the Control Center (notification curtain), which allows you to start the one-touch read function without unlocking the phone completely and not a kind of app icon, which is ideal in situations where you need to quickly pay for a fare or show a pass.
To add this button, swipe down from the top right corner of the screen (or bottom up, depending on the navigation settings) to open the Quick Settings panel. Find the button with the scanner icon; if it is not on the visible part of the screen, click on the edit button (usually it is a pencil icon or three dots in the corner). In the list of available widgets, find the Scanner and drag it to the active zone.
Once you add a widget, you make the scanning process as easy as possible: one swipe, one tap, and the camera is ready to go, and this is especially true for large-diagonal models, where it can take too long to find an icon in the app menu. The system automatically focuses on the code, and you just have to click on the link that appears.
☑️ Quick access settings
It is worth noting that in some versions of the firmware, this widget may be called “Scan” or have a composite icon. If the button does not work after adding, check the application permissions in the system settings, as sometimes after updating the software, access to the camera for system widgets can be reset for security purposes.
Comparison of scanning methods on Xiaomi
The choice of scanning method often depends on the specific situation and the type of code to be read. Each of the methods described has its advantages and disadvantages, which should be considered to achieve the best result. Below is a comparison table that helps determine the optimal tool.
| Method | Launch speed | Functional | Requirements |
|---|---|---|---|
| Appendix Camera | Tall. | Basic (references, text) | Activation. AI-regime |
| Appendix Scanner | Medium | Extended (goods, translation) | Separate launch |
| Centre for control | Maximum | Basic | Customization of the widget |
| Google lens | Medium | Universal. | Google services |
As you can see from the table, for simple tasks like connecting to Wi-Fi or going to a site, the best suited Camera or Control Center. They provide instant access without unnecessary interfaces. However, if you need to translate a menu in a foreign language or find a product by photo, the indispensable application becomes a specialized application Scanner or Google Lens.
Also, consider the resource intensity of the processes. AI-The camera mode can consume more battery power than the periodic launch of a single application, so if you rarely use codes, it makes sense to keep the function off and activate it as needed through a separate application.
Problem Solving: Why the Scanner Is Not Working
Despite the high reliability of the system, users sometimes face situations when the Xiaomi smartphone refuses to read the code, the camera focuses, but nothing happens, or there is an error message. Most often the problem lies not in the hardware, but in software conflicts or incorrect permission settings.
The first thing to check is that you have permission to use the camera for the scanner application. Go to Settings → Apps → All apps, look for Scanner or Camera, go to Application Permissions and make sure that access to the camera is allowed, sometimes after a system update, these settings are reset, blocking the functionality.
⚠️ Note: If the scanner stopped working after the update MIUI, Try clearing the app cache through the "Storage" menu in the settings of a particular application.
Another common cause is poor lighting or low camera resolution in current mode. Try changing the phone's angle to remove glare, or wipe the lens. If the code is damaged, printed on mint paper, or is very small, the standard algorithm may not be able to cope with the task, in which case manual focusing, if it is available in the interface, or using zoom.
What to do if the code is damaged?
In rare cases, the problem may be due to a conflict of third-party apps using the camera at the same time: Close all background processes, including instant messengers and social networks, and restart the device. If nothing helps, check for updates for the system and the applications themselves through the GetApps store or Google Play.
Safety in scanning QR-code
Using two-dimensional codes carries not only convenience, but also certain security risks. Attackers can create codes that lead to phishing sites that mimic bank or social media pages in order to steal your logins and passwords. The main rule of security is never enter personal data on a site by rechecking the address bar after clicking on a link from the scanner.
Modern versions of MIUI and HyperOS have built-in security mechanisms that check links to malicious sites in databases. If the system detects a threat, it will issue a red warning with a recommendation to refuse to switch.
- 🔒 Verification URL: Always look carefully at the site address before entering data; the domain must match the official.
- 🛡️ Antivirus: Use Xiaomi’s built-in security scanner that automatically checks for links you open.
- 🚫 Unknown sources: Avoid scanning codes pasted over original codes in public places (at stops, at ATMs).
And then there are codes that don't just open a site, but initiate an action, like sending an SMS to a paid number or adding a contact. Before performing any action proposed by the scanner, the system must request confirmation. Read pop-up dialogs carefully: if the code tries to send a message, you will see the text of the message and the recipient number.
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Security comes first: the scanner is only a reading tool, the final decision to click on a link or perform an action is always made by the user.
For maximum protection, additional antivirus software is recommended if you frequently use public Wi-Fi networks and scan codes in unknown places.A comprehensive approach to digital hygiene will allow you to enjoy the technology without risk to personal data and finances.