Smartphones have long since ceased to be a means of communication, becoming powerful pocket offices capable of solving many everyday tasks. One of the most popular features for students, office employees and freelancers is the ability to quickly scan documents directly from the screen of the device, bypassing the need for bulky printers with scanning. Owners of Chinese-brand devices often wonder how to scan documents on Xiaomi to get a high-quality digital copy without distortion and unnecessary glare.
In the MIUI operating system and the new HyperOS, the company's engineers have provided several built-in tools that allow you to instantly translate paper media into PDF or JPEG format. You do not need to search for third-party applications in Google Play, since the basic functionality of the camera and system utilities often surpasses paid counterparts in terms of speed and image processing quality. Understanding how to set up this process will save you a lot of time when working with contracts, help or notes.
In this article, we will take a closer look at all the available ways to digitize text, including hidden features that not all users know. We will look at the settings for automatic boundary definition, working with multi-page files and the secrets of improving text readability. If you want to turn your Xiaomi into a real portable scanner, carefully read the instructions and tips below.
Built-in scanner in the Camera app
The fastest way to get a digital copy of a document is to use the standard Camera app, which is pre-installed on every device in the brand. In recent firmware versions, AI algorithms have learned to automatically recognize text and suggest switching to the appropriate mode. To get started, launch the application and hover the lens over a piece of paper; if the system sees text, a Documents or Text icon may appear in the bottom corner or in the mode menu.
However, standard photo mode often doesn’t give the perfect result, as it doesn’t align perspective or remove shadows. To activate a specialized mode, click on the “More” button in the bottom menu and select Documents. In some models, such as the Redmi Note series or Xiaomi Mi, this mode can be called “Scanner” or integrated into the “Text” section. After switching, hover the camera so that the document falls into the frame, and the system automatically takes a picture, aligning the edges of the sheet.
⚠️ Warning: When using the built-in scan mode, make sure the lighting is uniform. Sharp shadows from the phone may overshadow some of the text, and the automatic algorithm will not be able to correctly determine the boundaries of the document.
The quality of the final image depends on the purity of the lens and the stability of the hands at the time of shooting. It is recommended to wipe the camera with a soft cloth before starting work and use a tripod or stop if you want to scan a large number of pages.
Use of the System Application Scanner
Unlike many other manufacturers, Xiaomi includes a separate system application called the Scanner, which is available through the menu of all applications or through a widget on the desktop, often combined with a scanning function. QR-This application is designed specifically for document management and provides more flexible settings than a regular camera, allowing you to choose save formats and color profiles.
To get started, open the Scanner app and switch to the Documents tab at the bottom of the screen. Here you'll see a viewfinder-like interface with a shutter button. After pressing the button, you automatically recognize the boundaries of the sheet, trim the extra fields and improve text contrast. You can select the color mode in the settings: color, black and white or blackboard mode, which is especially useful for scanning handwritten notes.
- 📄 Automatic pruning: a smart algorithm finds the edges of the A4 sheet and removes the background of the table or hands.
- 🎨 Filters: the ability to apply filters to improve the readability of pale text or remove the yellowness of paper.
- 📑 Packet scanning: the feature allows you to shoot many pages in a row, and then save them in one PDF-file.
- ☁️ Cloud sync: the ability to immediately send scanned files to Mi Cloud or other storage.
The special feature of batch scanning, which turns a smartphone into a full-fledged office scanner with auto-submission, is that you can take pictures of the contract pages in sequence, and the application will assemble them into a single document, which is critical for lawyers and students who need to archive large materials.
☑️ Pre-scan check
Documents Mode in the MIUI Gallery
Many users don't know that the scan feature is built directly into the standard image gallery. If you've already taken a regular picture of a document but it's curved or glared, you don't have to reshoot it. Open the photo in the Gallery app, click Change, and find the Documents or Scan tool. The system will suggest that you automatically align the perspective and improve the text quality.
This is especially useful when you need to send a passport or ticket photo, and you don't have any software on hand. MIUI algorithms analyze the contents of the frame and use mathematical transformations to make the sheet flat and rectangular. You can manually adjust the angles if the automation is wrong, dragging the markers along the outline of the document.
Once processed, you can save the image as a copy or replace the original, and you can also use the text recognition (OCR) feature from this menu to copy the contents of the document to the clipboard, which eliminates the need to reprint the text manually, which is a huge advantage when working with large amounts of information.
High quality secret
Third-party applications for professional work
While Xiaomi’s built-in tools are powerful, more advanced tools may be needed to work professionally, with Google Play offering a host of apps that specialize in scanning and advanced features such as PDF editing, watermarking, and advanced text recognition, with Adobe Scan, Microsoft Lens, and TurboScan being the market leaders.
The main advantage of third-party applications is cross-platform and deep integration with cloud services. For example, Microsoft Lens works perfectly with OneDrive and Word, allowing you to convert a tableshot into an editable Excel file. Adobe Scan automatically cleans the image of noise and makes the text as clear as possible, simulating the work of expensive office equipment.
⚠️ Note: When installing third-party scanners, carefully check the permissions requested. Some applications may require access to contacts or geolocation, which is not necessary for their primary function and may not be secure for your data.
The choice of a specific application depends on your needs. If you just need to quickly send a passport scan to technical support, there is enough built-in tools. If you are preparing documents for a legal transaction or archive, it is better to install specialized software that guarantees standards of quality and compatibility.
Customization of quality and preservation formats
The key to digitizing is choosing the right save options: Scanner or camera settings can select the resolution of the image. Text documents usually have a resolution of 1920×1080 or 12 MP, which provides a good balance between quality and file size. However, for documents with small print or graphic elements, it is better to choose the maximum available resolution.
It's also important to decide on file format. For text documents that will be sent by email or uploaded to public service sites, the optimal format is PDF. It retains the structure of the page and does not allow you to accidentally shift text when viewed on different devices. JPEG or PNG format is better used for images, photos or documents that require further processing in graphic editors.
| Parameter | Recommended value | What's the point? |
|---|---|---|
| File format | Official documents, multi-page reports | |
| Permission | High (12 MP+) | Small print documents, drawings |
| Color mode | Black and white. | Text contracts, books (saves space) |
| Compression | Minimum | Archival storage of important papers |
Keep in mind that high resolution and no compression take up more space in the memory of the device. If you scan hundreds of pages, it makes sense to periodically clear the app cache or immediately transfer files to the computer or the cloud. Setting the balance between the quality and the size of the file is a skill that will be useful to every smartphone user.
💡
The optimal format for sending documents over the Internet is PDF with compression, and for archives – PNG without loss of quality.
Frequently Asked Questions (FAQ)
Why does Xiaomi's camera not see the boundary of the document?
Can I scan documents without the internet?
How to scan a document in PDF right away?
Where are the scanned documents stored?
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Use the Xiao AI voice assistant or Google Assistant to run the scanner without hands. Just say "Open the scanner" to get started quickly.