How to scan a document in a Xiaomi phone: full instructions

Smartphones are no longer just a means of communication, becoming powerful pocket offices that can solve complex workflow problems. Owners of Xiaomi devices often face the need to urgently send a copy of a passport, contract or certificate, but there is no printer at hand with scanning function. Fortunately, your camera, combined with the right software, can replace a bulky scanner, ensuring high quality and readability of text.

The process of digitizing papers on devices with a shell MIUI or the new HyperOS has become as simple as possible thanks to the integration of special image processing algorithms. You do not need to search and install heavy third-party programs, since the basic functionality of the system often covers 90% of the needs of the average user. We will analyze all the available methods, from embedded tools to professional applications, so you can choose the most convenient option for your situation.

Before we start setting up, it's worth noting that the quality of the final file is directly dependent on the lighting and hand stability during the shooting. Even the most advanced neural network will not be able to perfectly align the text if the original image is blurred or skewed, so preparing the workplace and understanding the principles of the lens are key factors for success.

Use of built-in scanner in the Camera application

The fastest way to get a digital copy of a document is to use the functionality that developers already put in the standard Camera application. In the latest versions of the MIUI and HyperOS shell, Xiaomi engineers have implemented a special mode that automatically determines the boundaries of the sheet and improves the readability of text, removing shadows and aligning perspective.

To activate this feature, you need to open the application and find the item "Eye" in the bottom menu, where additional shooting modes are often hidden, and you need to select the option "Documents" or "Scanner", then a frame will appear on the screen to help you position the sheet of paper correctly, the system itself recognizes the edges of the document and suggests taking a picture when the image is clear enough.

The feature of this method is the ability to batch scan, where you can shoot several pages in a row, and then save them to one file or gallery. This is extremely convenient when working with multi-page contracts or reports, where it is important to preserve the consistency and integrity of information. Processing is instantaneous, and you immediately see the result on the screen.

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For best results, place the document on a dark contrast surface to help the camera algorithms more accurately define the boundaries of the white sheet.

It's important to understand that the built-in scanner works in conjunction with artificial intelligence, which analyzes the content of the frame in real time. If you scan color graphics or photos with text, the mode can automatically switch to normal, so you should monitor the display on the screen, this approach saves time and does not require an Internet connection.

Scanning through the Google Drive app

If the built-in tools don’t seem functional enough, a great solution is to use the Google ecosystem, which is pre-installed on Xiaomi smartphones.The Google Drive app has a powerful built-in scanner that not only creates high-quality images, but also immediately saves them to the cloud storage, making them available from any device.

To get started, open the app and click on the floating new file add button, usually located at the bottom right of the screen. In the menu that appears, select Scan, then the camera interface with optimized document settings opens. Automatic cropping and filtering is also available to remove the yellowness of the paper.

The main advantage of this method is the built-in OCR (Optical Character Recognition) technology, which allows you to turn an image of text into an editable format. After scanning, you can send a file straight to a PDF, add a description, or even recognize text to search the contents of a document inside the repository, an indispensable tool for students and office workers.

Google Drive also allows you to flexibly adjust your save options, choosing between color, black and white or high contrast. You can scan documents of different sizes, from business cards to A3 format, if your camera matrix resolution allows. All files are automatically synchronized, eliminating the risk of data loss when your phone breaks.

Third-party applications for professional processing

For users who need advanced editing capabilities, such as batch renaming, complex color correction or table recognition, you should pay attention to specialized software. Market leaders are traditionally considered applications like CamScanner, Adobe Scan or Microsoft Lens, which offer functionality that exceeds standard solutions.

These programs can not only take pictures, but also deeply analyze the structure of a document, highlighting headings, tables and signatures in separate layers. For example, Microsoft Lens integrates perfectly with the Office suite, allowing you to immediately export scanned text to Word or table data to Excel.

However, it is worth considering that many advanced features in such applications are available only on a paid subscription or are limited to the number of scans in the free version, and they may require more CPU and RAM resources, which on older Xiaomi models can lead to a slowdown.

When choosing a third-party solution, pay attention to the permissions the app requests. If a simple scanner requires access to contacts, microphone and geolocation without an obvious need, this can be a signal of a potential leak of personal data. Always check the rankings and reviews on Google Play before installing.

Customization of quality and preservation formats

The quality of the final document depends not only on the chosen application, but also on the correct resolution and save format settings. In standard Xiaomi camera settings, the default is to compress images to save space, which is unacceptable for text documents with small print.

It is recommended to go to the camera settings via the Settings → Photo Quality menu and choose the maximum available resolution. For text documents, PDF is the optimal format for saving, since it is versatile, opens easily on any device and saves the layout of the original. JPG images are only suitable for fast sending in instant messengers.

Also worth noting is the aspect ratio and the presence of watermarks that some apps add automatically. In professional settings, you can turn off the date stamp or program logo to make the document look official. Remember to clear the scanner app cache so that it works quickly.

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The optimal balance between quality and file size is achieved by using a medium-level PDF format.

Improved text readability and image processing

Even after a good scan, text can look pale or have color distortions due to uneven lighting. Built-in editors in Xiaomi Gallery or scanning apps allow you to apply filters that make the text black and the background white, mimicking the work of a real scanner.

Use contrast and brightness tools to highlight letters against the background of paper. If a document is crumpled or photographed at an angle, the "Capacity and Rotation" function will help align text lines parallel to the edges of the screen, which is especially important for official papers, where curved lines can be perceived as negligence.

In some cases, it is useful to use a Magic Wand filter or similar in third-party applications that automatically removes the shadows from your fingers or the curves of the pages of the book. However, be careful: overprocessing can lead to the disappearance of part of the text or the appearance of artifacts, so always check the result before sending.

⚠️ Note: When scanning documents with protection (holograms, watermarks), do not use aggressive filters, as they can hide the security elements, and the document will be considered invalid.

To improve the readability of handwriting, you can try to sharpen the editor, which will make the lines clearer, but can add digital noise to monochromatic areas. Experiment with settings for each type of document individually.

Organization and storage of scanned files

Once you have created digital copies, it is important to organize them correctly so that you can quickly find the right file at the right time. Chaotic storage of scans in the shared Camera or Download folder will cause you to lose important documents among hundreds of other photos.

Create individual albums in a gallery or folders in a file manager for different categories of documents: Passport, Tax, Work, Medicine. Use clear file names that include the date and type of document, such as, 2023-10-25_Contract Lease.pdf. This will simplify the search through the built-in indexing system.

Don’t forget to back up regularly. Set up automatic scan folders sync to cloud services like Mi Cloud, Google Drive or Yandex.Disk, which will protect your data in case of loss or theft of your phone, and free up the device’s internal memory.

Regularly audit your archive and delete temporary files that are no longer needed, not only will it make space, but it will also speed up your search. For critical documents, consider storing copies on physical media, such as, USB-plug-in OTG.

Frequently Asked Questions (FAQ)

⚠️ Warning: Never store scans of documents in public clouds without a password, and do not send them through unsecured communication channels without prior archive encryption.