How to make a scan on Xiaomi 9: detailed instructions

The modern smartphone has long ceased to be just a means of communication, becoming a universal tool for working with documents. owners of flagship devices often wonder how to make a quality scan on Xiaomi 9 to quickly send a contract, certificate or check in digital format. Fortunately, you do not need to look for an office scanner, since your camera gadget can work wonders when set up correctly.

The process of creating a digital copy of a document on Xiaomi Mi 9 can be done in several ways, each with its own advantages. The built-in MIUI system offers basic functionality that in most cases fully covers the needs of the average user. However, for those who work with large volumes of paper media, there are more advanced methods and specialized software.

In this article, we will take a look at all the scanning options available, from native features to third-party solutions. You will learn how to set up automatic edge determination, improve text readability and keep the result in the right format. The main secret of a quality scan on Xiaomi 9 lies not only in the software, but also in the correct lighting and position of the device above the document.

Use of built-in scanner in the Camera application

The fastest way to get a digital copy of a document is to use the standard Camera app, which is pre-installed on each device. MIUI, In the Xiaomi Mi 9, the developers have integrated smart object recognition algorithms. You do not need to install additional programs to scan text or scan the text. QR-code.

To activate the scan mode, you need to run the camera app and find the appropriate mode, usually indicated by the document icon or the text "Documents" in the lower mode switching menu. If this mode is not available in quick access, click on the "More" button (or three dots) to deploy the full list of available features.

Once you select the mode, point the lens over a piece of paper, and the system automatically defines the boundaries of the document and illuminates them with a yellow or white frame, which indicates that the autocorrect algorithm is ready to work. Press the shutter button, and the phone will align the perspective, trim the extra fields and improve the contrast of the text.

⚠️ Note: When using automatic mode, try to keep the phone strictly parallel to the surface of the table. The tilt of the device can lead to distortion of the geometry of letters, which will make it difficult to subsequently recognize the text (OCR).

The result can be edited immediately: crop, rotate or apply the filter "Black and white" to save space when printing. the finished file is saved in the gallery in the folder "Scanners" or "Documents", where it is easy to send via messenger or email.

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Use Documents mode even to scan books. Xiaomi Mi 9 algorithms can align curved pages to make text straight.

Using Google Lens for Text Recognition

The second most powerful tool available out of the box on any Google smartphone is Google Lens. On Xiaomi 9, this feature is deeply integrated into the system and is often triggered by a long press on the power button or through a widget in the search bar, which is ideal if you need to not just take a picture, but recognize and copy text.

Run Google Lens through a search widget or Google app. Point the camera at text and select the text tab at the bottom of the screen. The system will analyze the image and highlight the recognizable characters, you can select all the text at once or select a specific paragraph with your finger.

The advantage of this method is that it can instantly translate or copy content to the clipboard, and once recognized, the "copy text," "translate," "listen" or "search" buttons are available, making Google Lens an indispensable tool for students and office workers.

• 📸 Instant copying of handwritten and printed text with high accuracy.
• 🌍 Automatic translation of scanned text into any language without leaving the application.
• 📑 Preserving paragraph structure when exporting to Google Documents.
• 🔍 Search for information on scanned fragments (for example, the names of books or products).

Importantly, Google Lens requires an active internet connection to work, as image processing takes place on the company’s servers, but the speed of running on the Snapdragon 855 processor that the Xiaomi 9 is equipped with provides almost instantaneous system response.

Third-party applications for professional scanning

If built-in capabilities aren’t enough, Google Play offers a variety of specialized applications that provide advanced functionality: batch scanning, multi-page PDF creation, advanced color correction and cloud storage. For Xiaomi 9 owners who often work with documentation, installing such software can be a great solution.

One of the market leaders is Adobe Scan, which automatically finds documents, removes glare and shadows, and also recognizes text (OCR). The application interface is intuitive, and the quality of image processing often exceeds the standard system tools.

Another popular option is Microsoft Lens, which is great for scanning boards, business cards and documents and then sending them to Word or OneNote, and it can even align images with a camera's tilt angle, which is useful in the field.

⚠️ Warning: Many free versions of scanners add watermarks or have a limit on the number of scans per day. carefully study the subscription terms before installing to avoid unexpected charge-offs.

The table below will help you compare the main characteristics of popular scanning apps:

When choosing a third-party application, pay attention to the permissions requested. The scanner only needs access to the camera and storage. If the application requires access to contacts or geolocation without an obvious need, it is better to refuse its use for security reasons.

Setting up quality and scanning permissions

The quality of the final file depends on the camera settings and save options. The Xiaomi Mi 9 has an excellent sensor that allows you to take high-resolution pictures. However, for documents, excessive megapixels can lead to the creation of too heavy files that are inconvenient to send.

In the camera or scanner application settings, find the section that is responsible for image quality. It is usually recommended to choose a balance between clarity and file size. For text documents, the optimal format is JPG with compression of 80-90% or PDF of medium quality.

If you plan to print scanned documents, make sure that you select a resolution of at least 300 DPI (dots per inch). In mobile applications, this often corresponds to the setting "High quality" or "For printing". For sending email or messengers, standard screen resolution is enough.

• 📉 Use a black and white filter for text documents – this reduces file size and increases readability.
• 🎨 For color graphics and photos, choose the "Color Original" or "Magic Color" mode".
• 💾 Keep important documents in format PDF, To preserve the structure of a multipage file.
• ☁️ Set up automatic scan sync with cloud storage to avoid losing data.

You should also pay attention to the focus settings. In most cases, autofocus works great, but for very small fonts, you can try manually touching the screen in the text area to capture focus and exposure.

Processing and editing of scanned files

Once you've done a scan, it often requires some rework, and the built-in MIUI gallery editor or tools inside the scanner applications allow you to do basic things, so you can cut the extra edges if the automation is wrong, or rotate the image 90 degrees.

One of the most useful features is filtering, and using a "Increase contrast" or "Black and white" filter makes the pale text bright and clear, removing the background, and this is especially true when scanning old documents or checks with faded thermal printing.

For more serious text work, you can use OCR (Optical Character Recognition) to convert text images to editable formats. On Xiaomi 9, this process is fast thanks to a powerful processor, you can fix recognition errors right in the application before saving.

⚠️ Warning: Always check scanned text for recognition errors, especially when it comes to numbers, dates, and proper names.

You can send the finished document directly from the app through the Share menu, and all the popular protocols are supported: Bluetooth, Wi-Fi Direct, email, messengers (WhatsApp, Telegram) and cloud drives, and the convenience is that you don't have to save the file to the gallery first and then search for it.

Frequent problems and ways to solve them

Despite the advances in technology, users may face some challenges. One common problem is blurry images, which often result from hand tremors or contamination of the camera lens.

Another issue is poor lighting, leading to noise and shadows, and try to scan documents in diffuse daylight or under multiple sources of artificial light to avoid hard shadows from your phone.

If the scanner app is slow or crashing, try clearing its cache. To do this, go to Settings → Apps → All apps, find the scanner you are using (Camera, Google or third-party), select Memory and click Clear Cache.

In some cases, the problem may be a lack of free memory of the device. Xiaomi 9 has enough resources, but if the memory is almost full, the image processing speed can fall.

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Regularly cleaning the cache of scanner apps and the camera helps to avoid hanging and speeds up the image processing process.

FAQ: Frequently Asked Questions