How to use a scanner on Xiaomi: the complete guide

Modern Xiaomi and Redmi smartphones have evolved into versatile tools that can read real-world information in fractions of a second. Users often search for information on how to activate a scanner on Xiaomi, unaware that their device may have several independent modules for this task. The built-in camera, the shell developer’s “Scanner” app and third-party Google services all perform similar functions but have different use cases.

Understanding the differences between these tools makes it much faster to work with a gadget, for example, one method is more convenient for quickly translating text or buying goods in a store, and another method is completely different for connecting to a friend’s Wi-Fi network. In this article, we will discuss in detail all available methods of scanning codes, QR-tags and documents so you can choose the best option for your situation.

Special attention should be paid to security settings and access permission, as it is errors in these parameters that most often lead to the fact that the function stops working correctly. We will consider not only standard algorithms of actions, but also hidden features of the system that are often overlooked even by experienced owners of Xiaomi and Redmi equipment.

Built-in “Scanner” application: basic setting

On all devices under the control of shells MIUI And HyperOS, by default, has a system application called the Scanner, which is the most versatile tool, because it combines the reading functions. QR-You don't have to download anything to get started, you just have to find the appropriate icon in the Tools folder on your desktop.

When you first run, the system will request permission to access the camera and geolocate, and this is a critical point: without granting these rights, the scanner on Xiaomi simply will not be able to function. If you accidentally refused access earlier, you need to go to the application settings through the Applications menu and force you to turn on all the required permissions, then you will open an interface with a horizontal menu where you can switch between the modes: Code, Document, Product and Translation.

Code mode is designed for quick reading QR-It automatically focuses on the image and reads the link or text without having to take a picture. The Document mode allows you to take pictures of text pages with automatic edge alignment and improved contrast, which turns the camera into a portable scanner. The “Product” mode uses a database to search for analogues in online stores, and the “Translation” imposes a translation on the image in real time.

Importantly, recognition is directly dependent on lighting and optical purity. If the app can't focus for a long time, try to wipe the camera or change the angle of the device, sometimes with a tap-to-screen focus in the code area.

Using the scanner widget on the desktop

For those who use the scanner several times a day, it can be inconvenient to look for an icon in the Tools folder every time. The MIUI shell offers faster access through widgets or a negative first screen (App Vault), which allows you to run the scan function literally in one touch, which is especially important when paying for purchases or entering premises by passes.

To add a widget, you need to pinch the empty area on the desktop and select "Widgets" (or swipe right if the App Vault is activated). In the list of available widgets, find "Scanner." The system will offer several options for design, from a simple icon to a widget with a camera preview. When you choose the right one, place it on the main screen. Now, when you click on it, you will instantly start the code read mode.

• 📱 Widget on the desktop is the fastest way to start without unnecessary menus.
• 🔍 Negative screen – handy if you’re used to swiping left to search.
• ⚡ Widget camera – allows you to immediately see the image from the camera for quick guidance.
• 🎨 Design themes – some themes may hide standard widgets, check settings.

There is another hidden activation method that not everyone knows about: On many Xiaomi models, long-clicking on the Camera icon causes a context menu, where the Scanner option may also be present.

Scanner. QR-codes in the Camera appendix

The built-in scanning feature in the standard Camera app deserves special attention, and unlike the individual scanner application, it integrates the process directly into the viewfinder, which means you don't have to switch between applications: you just open the camera, point the lens at the code, and the system will suggest the action.

To activate this feature, open the Camera app and click on the menu icon (three bars or gears) in the corner of the screen. Find Document Scanner or Google Lens (depending on the software version) and make sure the switch is active. In new versions of HyperOS, intelligent scene analysis works all the time: if the camera sees QR-code, in the corner of the screen appears a yellow icon with a suggestion to click on the link.

The advantage of using the main camera is more advanced image processing algorithms. Autofocus and HDR work more efficiently, which allows you to read damaged or poorly lit codes that a regular scanner application does not take. In addition, the camera allows you to use zoom (approximation), which is useful when scanning codes located at a long distance, such as on billboards.

⚠️ Warning: When using a link scanning camera, always check the site address before you click.The camera can automatically open URL-Addresses and attackers can fake QR-code leading to a phishing resource.

Also worth mentioning is the Google Lens feature, which is often built into the Xiaomi camera interface, which allows you not only to read the code, but also to search for similar images, recognize dog breeds, plants or attractions.

Scanning of documents and translation of text

Xiaomi smartphones have powerful text tools that are often underrated. The built-in document scanner is able to take pictures that look like pages scanned on professional hardware. Algorithms automatically define the boundaries of the sheet, align perspective (remove distortion from shooting at an angle), and increase the readability of text, whitening the background and increasing the contrast of letters.

To scan a multi-page document, go to Document mode in the Scanner app, and after the first snapshot, the system will suggest adding the next page, you can scan the entire contract or book, and then save the result to a single PDF file, which is extremely convenient for students, office workers and anyone who works with paper workflow.

The translation function is even more impressive: if you select Translation mode, point the camera at the text in a foreign language, the system will replace foreign letters with translation in real time, retaining the original formatting, and it works for menus in restaurants, signs, instructions and books.

• 📄 Format PDF — Ability to save multi-page documents in one file.
• 🌐 Online translation – instant text replacement in an image with context in mind.
• ✏️ Text recognition (OCR) — Ability to copy text from the photo to the clipboard.
• 🎨 Color preservation – modes for business cards and documents retain original print colors.

The quality of text recognition (OCR) on the Chinese Snapdragon processors used by Xiaomi is traditionally high. Even handwritten text with clear handwriting is often recognized correctly, allowing for quick digitization of notes.

Comparison of scanning methods on Xiaomi

To make it easier for you to decide which tool to use in a particular situation, we have prepared a comparative table, each method has its strengths and limitations, depending on the software implementation and available system resources.

And you can see from the table that for everyday tasks like paying or logging in to Wi-Fi, it's best to use a widget or a fast app. For documents and complex images, a specialized app or Google Lens is best. The choice depends on your specific goal at the moment.

And you also need to consider resource consumption, because the camera and AI algorithms can be running constantly in the background, and if you don't use a scanner very often, don't keep the app open in the background.

Solving problems with the scanner

Despite the reliability of the system, users may experience situations where the scanner stops responding or gives an error, most often a software failure or contamination of the optics. Before carrying the phone to the service, try a series of simple diagnostic steps.

First, check if the lens is covered with a protective glass case or a layer of dust. Wipe the camera with a soft cloth. If that's not the problem, go to the Scanner (or Camera) settings and clear the cache. This action is safe and will not delete your personal data, but will reset temporary files that may have been damaged.

If the scanner "sees" the code but doesn't click on the link, check your Internet connection. QR-codes contain only a short link that requires data to be downloaded from the network, and make sure that the date and time settings are set to automatic mode, as synchronization errors can block secure connections.

⚠️ Warning: If the camera makes strange sounds when focusing or the image twitches, this may indicate a physical breakdown of the autofocus module (OIS). In this case, the software methods will not help, you will need to replace the camera.

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Use a flashlight: At night, turn on the flash in the scanner interface. Many codes are printed on glossy paper and require directional light to reflect clearly.

In rare cases, the issue may be related to access rights after a system update. Go to the Application Protection or Privacy section and make sure the scanner is allowed to use the camera and location.

FAQ: Frequently Asked Questions

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On Xiaomi smartphones, there are three main scanning methods, each of which is optimal for its tasks: a widget for speed, a scanner app for documents and a camera for universal use.