How to make a scan on Redmi: a complete guide

Smartphone owners Xiaomi i Redmi often face the need to quickly convert a paper document into a digital format. Fortunately, modern versions of the operating system Android and proprietary shell MIUI (or HyperOS) provide powerful built-in tools for this task. You don’t have to search for and install dubious applications from the Internet, since the basic functionality of the camera can already recognize text and save it in PDF or JPG format.

The process of creating a high-quality copy may vary depending on the specific model of your device and firmware version. However, the general algorithm of actions remains similar for the entire ecosystem of the Chinese manufacturer. In this article, we will analyze in detail all the available methods that will help you get a clear image of text without unnecessary glare and distortion.

It is worth noting that the quality of the final file directly depends not only on the software, but also on the correct preparation of the document itself. Lighting and the position of the camera plays a critical role in recognizing small characters. We will look at the technical nuances that will allow you to achieve results comparable to the work of an office scanner.

Using the built-in scanner in the Camera application

The fastest way to scan a QR code or text document on Redmi is to use the standard “Camera” application. Engineers Xiaomi integrated an artificial intelligence module AI Cam directly into the viewfinder interface, which greatly simplifies the work. You don't need to open separate menus, just point the lens at the object.

To activate the function, you need to launch the camera application and look for an icon in the upper corner that resembles a square with dots or a magnifying glass. After clicking on it, the system will prompt you to select an operating mode: text translation, document scanning or code recognition. In Document mode, the camera will automatically align the edges of the sheet and improve the contrast.

⚠️ Attention: On some global firmware versions, the “Documents” function may be hidden or renamed to “Translation” or “Google Lens”. If you don't see the button you need, try switching the region in your phone settings.

When the frame is hovered over the text, the device will take the photo itself while the image stabilizes. After this, you will be asked to save the file in the gallery or immediately send it via messenger. This is especially convenient when you need to quickly transfer a photo of a passport or contract.

Scanning through the Google Photos and Lens app

An alternative and often more powerful tool is the ecosystem of services from Google, which is preinstalled on most smartphones Android. The application Google Photos has a built-in scanning function, which is based on technologies Google Lens. This method is especially good for recognizing handwritten text or complex tables.

To use this method, open the Photos app, select any photo, or tap the camera icon in the search bar. The system will analyze the image and highlight text areas. You can copy the text, translate it, or save it as a separate file. The recognition accuracy here is often higher than that of standard solutions.

• 📸 Open the Google Photos application and click on the camera icon in the search bar.
• 📄 Point the camera at the document and wait for frames to appear around the text.
• 💾 Click the "Save" or "Copy Text" button for further work.

The main advantage of using Google Lens is the ability to edit scanned text on the fly. You can correct the recognition error before saving, which is impossible to do in standard camera mode. In addition, cloud processing allows you to work with documents even in imperfect lighting.

Using specialized scanner applications

If the built-in functions are not enough for you and you need professional processing, it makes sense to turn to specialized software. Applications like Adobe Scan, CamScanner or Microsoft Lens offer advanced capabilities for image cleaning, batch scanning and table recognition. They turn your Redmi into a portable office.

Such apps can automatically detect page boundaries, remove shadows from fingers and straighten perspective. After processing, the document looks as if it was reprinted on the printer. This is critical for official papers, where maximum readability of each character is required.

Installing third-party software requires careful attention to permissions. The app will need access to the camera, storage, and sometimes the microphone. Always check what data the app collects to prevent confidential information from leaking from your documents.

Setting quality and formats saving

The quality of the final scan directly depends on the resolution settings and compression format. In most cases, the default format JPGis used, which compresses the image well, but may lose clarity of fine details if it is heavily compressed. For text documents, it is preferable to choose the format PDF or uncompressed PNG.

In the camera settings of your Redmi you can find the “Resolution” or “Aspect Ratio” parameter. For scanning A4 documents, the 4:3 ratio is best suited, as it is as close as possible to the proportions of a standard sheet. Using 16:9 mode will cut off the edges of the document or add black margins.

Pay attention to the DPI (dpi) setting if your application allows you to adjust it. For regular correspondence, 150-200 DPI is sufficient, but for official documents and contracts it is recommended to set the value to at least 300 DPI. This will ensure readability even when the document is printed on a printer.

⚠️ Warning: High-resolution PDF files can take up a significant amount of memory. Regularly check the available storage space on your smartphone.

Don't forget about white balance. If the scan turns out yellow or blue, look in the camera settings for color correction modes. Correct color rendering is important for documents that contain stamps or color signatures.

Processing and enhancing scanned images

Once you have taken a photo, additional processing is often required. The built-in gallery editor MIUI allows you to quickly trim excess edges and apply filters. The Document filter usually makes the background white and the text black, which greatly improves the perception of information.

If the text in the scan is blurry, you can try using sharpening tools. However, be careful: excessive sharpening can create digital artifacts that will interfere with reading. It's better to take a new photo in better light than to try to salvage a bad shot.

• ✂️ Crop the image to just the edges of the document.
• 🎨 Apply the B&W or Document filter to increase contrast.
• 💡 Adjust brightness and shadows to remove highlights from flash.

For batch processing of many pages, it is convenient to use the sorting functions in the gallery. You can create a separate Scans album so you don't lose important files among thousands of personal photos. Structuring data saves time in the future.

Organizing storage and transferring files

Creating a scan is only half the task. It is important to save and transfer the file correctly. If you're scanning a multi-page document, combine the pages into one PDF file rather than sending ten separate images. It looks professional and convenient for the recipient.

Use cloud storage services such as Google Drive or Yandex.Diskto back up important documents. If your smartphone is lost or broken Redmi, you can quickly restore access to your data from any other device. Synchronization occurs automatically in the background.

When transferring files via instant messengers (WhatsApp, Telegram, Viber), always select the “Send as file” or “Document” option. If you send an image as a regular photo, the messenger will greatly compress it and the text will become unreadable. Maintaining the original quality is a priority.

Frequently asked questions (FAQ)