Xiaomi and Redmi smartphone owners often see a system app called Lens on their desktop or in their tool folder, which many users ignore when relying on a standard Camera, but it is a powerful tool for analyzing the world around them that combines augmented reality, machine learning and computer vision to turn a smartphone into a universal scanner and translator.
The main purpose of this software is not just to take pictures, but to process visual information in real time. Unlike the usual photo mode, where the result is stored in a gallery, the Lens works interactively, overlaying data on top of the image, which can be instant translation of text from a signboard, search for goods from a photograph or identification of animal breeds.
The app's functionality is constantly updated by the developers of MIUI and HyperOS, with new algorithms, and understanding what this tool is designed for, allows you to significantly expand the capabilities of your device, and then we will discuss in detail the key modes of operation and technical features of this component of the system.
Main purpose and integration with MIUI system
The Lens app is a system component of Xiaomi’s ecosystem, deeply integrated into the operating system shell, and its main difference from third-party counterparts from the Google Play store is that it has direct permissions to interact with other services on the phone, which allows you to instantly save contacts from business cards to the phone book or add events from scanned text directly to the calendar.
And it's important to note that the app uses neural networks to recognize objects, which means that it's not just fixing the image, it's trying to understand the contents of the image, for example, if you point at a plant, the system will not only show the name of the plant, but also suggest similar images or places where you can buy one, and this depth of analysis requires constant data exchange with servers.
⚠️ Attention: Most functions, especially translation and product retrieval, require an active Internet connection. Without the network, functionality will be limited to basic scanning. QR-code.
Users often underestimate the speed of this tool, and by optimizing for the specific Snapdragon and MediaTek processors used in the brand’s smartphones, image processing is almost without delay, which is critical when using augmented reality or scanning documents on the go.
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To speed up the work of the “lens” clear the cache of the application in the “Memory” section if you notice slowdowns when recognizing complex objects.
Scanning and object recognition modes
One of the most popular features is universal scanning, and the app can distinguish between object types automatically, so you don't have to switch between text, product or animal modes, because the AI will determine what's in the frame and suggest the appropriate actions.
Let’s look at the main directions of the scanner:
- 🌿 Nature and animals: instant identification of a dog, cat or plant species with a brief help from Wikipedia.
- 🛍️ Shopping: search for analogues of clothes, shoes or equipment by photography in popular online stores.
- 🍽️ Food: recognition of dishes in the menu of restaurants with the display of approximate calorie content and composition.
- 🏛️ Attractions: getting stuck over a building or monument will display a historical reference and a place rating.
The accuracy of recognition depends on the quality of the original image and lighting. Computer vision algorithms work best in contrast light, where the object stands out clearly from the background. At dusk or when the camera moves, the probability of error increases significantly.
Translation and text management functions
For travelers and students, the Lens is becoming an indispensable handheld translator, and OCR (Optical Character Recognition) technology allows you to select text from an image and replace it with a translation, while retaining the original formatting, which is especially useful when reading menus, drug instructions or road signs.
The translation process takes place in several steps, first, the camera captures a text block, then sends it to the server for processing, then superimposes the translated text on top of the original, and supports a huge number of language pairs, including rare dialects, which makes the tool universal.
And it can also save recognized text in an editable format, so you can scan a book page or handwritten notes, and the system converts them into digital text that you can copy or send to the messenger, which eliminates the need to reprint large amounts of information manually.
⚠️ Note: When scanning handwriting with poor handwriting, error rates can be high.Always double-check important data, such as phone numbers or amounts of money, before using them.
Scanning of documents and business cards
The document mode deserves special attention: the Lens automatically aligns perspective, removes glare and shadows, making the scanned copy as similar as possible to the original obtained on the office scanner, which allows you to legalize photocopies of a passport, contract or invoice for sending by e-mail.
When scanning business cards, the app highlights key fields: name, phone number, email, company address, and once recognized, the system will prompt you to immediately save contact to the phone book or create a new event on the calendar if the business card has a date for a meeting, which saves time when networking.
For high-quality digitization of documents, it is recommended:
- 📄 Use a flat surface without foreign objects in the frame.
- 💡 Provide uniform lighting without sharp shadows from the hands or the camera itself.
- 📐 Hold your smartphone parallel to the document to avoid distortion of the geometry of the text.
☑️ Scan quality check
Technical specifications and requirements
The effectiveness of the application depends not only on the software, but also on the hardware of the smartphone. The quality of the camera matrix, the presence of optical stabilization and the speed of the processor play a crucial role in the speed and accuracy of recognition.
Below is a table of the dependency of functions on the characteristics of the device:
| Characteristics | Impact on work | Minimum requirement |
|---|---|---|
| Camera resolution | Clear recognition of small text | 8 MP |
| RAM | Processing speed without hanging | 3GB |
| Stabilization (OIS) | Quality of scanning from hands in motion | Preferably. |
| Android version | Access to the new camera API | Android 8.0+ |
On older smartphone models, some features require complex real-time computing (e.g., a few features, 3D-Tapping or instant speech translation may be delayed, and in such cases, the system may suggest that you take a picture and process it later, rather than in preview mode.
Hidden opportunities for advanced users
Privacy and data security settings
Using a Lens involves transferring visual data to the company's servers for analysis, which raises legitimate privacy questions, requests access to the camera, microphone (for voice search), and geolocation, and without these permissions, the functionality will be inoperable.
Xiaomi’s privacy policy states that images used for search and translation are not permanently stored on servers and are used solely to process the request.However, users should exercise caution when scanning sensitive information such as bank cards, passwords or personal documents with sensitive data.
It is recommended to periodically check the permissions of the application in the system settings, if you have not used the translation function for a long time, you can temporarily turn off access to the microphone, leaving only the camera, which will increase the overall level of security of your device.
⚠️ Warning: Never scan. QR-codes from unverified sources through Lens if they lead to suspicious sites. Although the app checks links, phishing resources can masquerade as legitimate pages.