How to scan. QR-Xiaomi Redmi Note 9 code: all methods from standard to hidden

Scanning. QR-The Xiaomi Redmi Note 9 seems like a simple task — until you face unexpected problems. MIUI, Others have a camera that stubbornly doesn't recognize the code, and others don't even know that their smartphone can do it without additional apps. In this article, we'll look at all the ways, from obvious to hidden firmware features that work even without the Internet.

The Redmi Note 9 (M2003J15SC, M2003J15SS and global) feature is that the manufacturer regularly updates the scanning logic through MIUI updates. For example, versions prior to MIUI 12.5 required a separate application to activate the scanner, and since MIUI 13, the function is integrated directly into the Quick Settings Panel. We will take into account all the nuances and show the current methods for any firmware version.

1. Built-in scanner QR-code MIUI: Where to look and how to turn on

The fastest way is to use a native scanner that's already pre-installed on the Redmi Note 9, and it's hidden in two places, and its behavior depends on the MIUI version:

• 📱 Through the notification bar: swipe down from the top edge of the screen to open the curtain, then click on the Scanner icon QR» (If it is not, tap on “Edit” and add the widget manually).
• 🔍 Through Search: Swipe down the main screen, type in the search bar «QR» — The system will offer to open the Scanner application.
• 📷 Through the camera: Open the standard Camera app, go to More mode and select Scanner QR».

If the scanner does not respond to the code, check:

⚠️ Attention: On versions MIUI 12.0.1-12.0.3 for Redmi Note 9, there was an error that caused the scanner to not work when the power saving mode was turned on. → Battery → Energy saving regime.

For convenience, you can put the scanner label on the main screen:

1. Hold the empty space on the desktop.
2. Select "Widgets" (Widgets).
3. Find the QR Scanner widget and drag it to the screen.

Make sure the code is clear and not blurred.

Turn on sufficient brightness of the screen

Turn off the energy-saving mode.

Check if there's any protective film on the camera.-->

2.Scanning through Google Lens: When a standard scanner refuses to work

If the built-in scanner MIUI It's buggy or not (like when you reset your settings), and Google Lens will come to the rescue. QR-It translates text, identifies objects, even copies phone numbers from business cards:

• 🔎 Google Photos: Open the Google Photos app, select any photo from QR-code (or make a new one), click on the Lens icon at the bottom.
• 📷 Through the camera: Open Google Camera (if not installed – download from Play Market), click on the Google Lens icon in the upper right corner.
• 🌐 Through the browser: in Google Chrome, click on the Lens icon in the search bar and hover the camera at the code.

Google Lens recognizes QR-codes even from screens of other devices (for example, from a PC monitor), whereas a standard scanner MIUI It's very useful if you need to quickly transfer the link from your computer to your phone.

The downside is that you need to connect to the Internet to process data. If you don't have a network, use the offline mode in the Google Lens app (after downloading the language package).

Integrated MIUI scanner

Google Lens

Third-party annexes

Another way.-->

Third-party applications: when you need advanced functions

Standard Redmi Note tools 9 They are suitable for basic tasks, but if you need to scan codes in batch mode, save history or work with damaged ones. QR, You'll have to install specialized software.-3 tested applications:

Before installing, check the permissions of the application. Real scanners only request access to the camera and storage (to save history). If the program requires access to SMS, Contacts or Geolocation, this is a reason to be wary.

⚠️ Note: Redmi Note 9 with firmware MIUI Global, some scanner applications may conflict with the built-in service miui.qrcode. If after installing third-party software, the native scanner stopped working, clear the system cache in Settings → Annexes → Application management → Three points. → Clear the cache.

4. Secret MIUI features: scanning without a camera

Few people know, but Xiaomi Redmi Note 9 can scan QR-This is useful if the main camera is broken or occupied (e.g. during a video call:

• 📁 Through the gallery: open any photo with QR-code in the Gallery app, tap the icon "More» (⋮) and select "Scan" QR-The function works even with screenshots.
• 🔗 Through the browser: in Mi Browser, type qr: (with colon) into the address bar, then insert the code text (for example, qr:https://example.com) — The browser will automatically redirect you to the link.

Another life hack: if you need to scan code from another device (like a laptop), but you don’t have a Redmi Note 9 on hand, use the Mi Remote feature, which can transfer data between Xiaomi devices over Bluetooth, including text links from QR.

To activate this function:

1. Open Mi Remote (if not, install from the Play Market).
2. Click on the + icon and select “Transfer File”.
3. Select “Text” and enter data from QR-code (can be copied from scan history).
4. Send to another Xiaomi device.

💡

If QR-The code contains a Wi-Fi password, scan it through a built-in scanner MIUI — It automatically suggests you connect to the network without manual input.

5. Problem Solving: Why the Scanner Is Not Working

Redmi Note 9 users are faced with three problems:

1. The scanner won’t open – check if it’s turned off in the security settings (Settings → Apps → Permissions → Camera).
2. The camera is not focused – wipe the lens with a napkin (greater traces interfere with autofocus) or reboot the phone.
3. The code is not recognized – try turning on the flashlight (Notification curtain → flashlight) or reduce the brightness of the screen (bright light interferes with scanning).

If the problem persists, reset the camera settings:

Settings → Applications → Application Management → Camera → Storage → Clear data

On versions of MIUI 14+, switching the camera mode from Photo to Document can help – it better recognizes contrast codes on paper.

⚠️ Note: If after updating the firmware scanner stopped working, check the version of the service miui.qrcode in Settings → The phone. → Version. MIUI → Three points. → Application versions. If version is below 1.2.0.14, update the firmware manually through Settings → Updating the system.

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On the Redmi Note 9 with older MIUI versions (below 12.0), the QR scanner may not be running in power saving mode.

6.Security: How not to run into scammers

QR-Codes are a handy tool, but they're also a great way for attackers to steal data. Here are 3 security rules that will save your accounts:

• 🔒 Do not scan codes from suspicious sources (such as streetlight stickers or in transport.
• 🌐 Check it out. URL before the transition, if the link contains typos (for example, paypa1.com Instead of paypal.com, don’t open it.
• 📱 Use link verification crawlers (e.g. Kaspersky) QR Scanner or Bitdefender Mobile Security).

On the Redmi Note 9 you can include additional protection:

1. Go to Settings → Privacy → Special Permissions → Access to the camera.
2. Limit access to the camera for unnecessary applications.
3. Include phishing protection in Settings → Security.

In 2023, fraudsters are actively using the QR-codes to steal credit card data through fake payment pages. Never enter card details on a site opened through QR, unless you are sure of its authenticity.

Frequently asked questions