QR codes have become an integral part of everyday life: from paying for purchases to authorizing Wi-Fi networks. On Android smartphones, you can scan them either using built-in tools or through third-party applications. But not all users know that the functionality of a QR scanner depends on the version of Android and the device model —somewhere it is integrated into the camera, and somewhere it requires the installation of additional software.

In this article you will find detailed instructions on using a QR scanner on Android, including hidden features of standard applications, an overview of the top 5 alternative apps and solutions to common problems. We will also look at how to protect yourself from fraudulent QR codes that can steal your data or infect your smartphone with a virus.

Built-in QR scanner in Android: where is it located and how to enable it

Modern versions of Android (starting s Android 8.0 Oreo) have a built-in QR scanner that works through the standard application Camera. However, its location and functionality may differ depending on the manufacturer’s shell:

  • 📱 Stock Android (Pixel, Motorola): the scanner is activated automatically when you point the camera at the QR code. Just open the application Camera and point the lens.
  • 🤖 Samsung One UI: in the application Camera you need to switch to mode Bixby Vision (eye icon in the top menu) or use a separate application Samsung Internet.
  • 📲 Xiaomi MIUI: the application Camera has a separate tab Scanner (QR icon in the upper right corner). On older versions of MIUI, you may need to install the application Mi Scanner.
  • ⚡ Huawei EMUI: use the application Huawei Browser or the built-in scanner in Camera (QR icon in the top menu).

If the built-in scanner does not work, check:

  1. Is the smartphone firmware updated to the latest version (path: Settings → System → System update).
  2. Are permissions enabled for applications Camera (path: Settings → Applications → Camera → Permissions).
  3. Is the power saving mode disabled, which can block background processes.
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⚠️ Attention: Some budget models (for example Redmi 9A or Samsung Galaxy A03) may not have a built-in scanner. In this case, you will need to install a third-party one. applications.

Step-by-step guide: how to scan a QR code on Android

Consider the universal algorithm for scanning a QR code through a standard camera (relevant for most devices):

  1. Open application Camera. Make sure the main (rear) camera is selected.
  2. Point the lens at the QR code. The distance should be 10–30 cm —too close or far away may interfere with recognition.
  3. Wait for the notification. A pop-up window will appear on the screen asking you to follow a link or perform an action (for example, connect to Wi-Fi).
  4. Confirm the action. Click on the notification to open the link in the browser or apply the settings.

If the QR code is not recognized:

  • 🔦 Check the lighting - in low light, turn on the flashlight (Swipe down → Flashlight).
  • 📱 Make sure the code is not damaged (no blur, scratches or overlapped areas).
  • 🔄 Try restarting the application Camera or smartphone.

Check lighting|Clean the camera lens|Make sure that the code is not damaged|Turn on mobile data (if you need to follow the link)-->

On some devices (for example Google Pixel 6 and newer), scanning works even without an Internet connection - the code is decrypted locally. However, to open links or download content, you will need a network connection.

Top 5 Apps for Scanning QR Codes on Android

If the built-in scanner is missing or is unstable, install one of the specialized applications. We tested 5 best free solutions with additional functions:

Application Rating (★) Features Cons
QR & Barcode Scanner (Gamma Play) 4.8 Fast scanning, code history, QR generator, work without the Internet Advertising in the free version
Kaspersky QR Scanner 4.7 Checks links for viruses, blocks phishing sites, minimalistic interface Requires registration for some functions
Barcode Scanner (ZXing Team) 4.6 Open source, supports all barcode formats, exports data Outdated design
QR Code Reader (Scan) 4.5 Automatic data copying, night mode, widget for quick access Subscription to remove ads
NeoReader QR & Barcode 4.4 Screen code recognition, cloud history backup, NFC support Takes up a lot of space

For installation go to Google Play → find the application by name → Click "Install". After installation, provide permissions to access the camera and storage (if you need to save history).

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Before installing, check user reviews - some applications may contain hidden advertising or collect data. Give preference to apps with a rating above 4.5 and more than 10 million downloads.

⚠️ Attention: Applications like QR Scanner: Promo & Coupon or Fast QR Scanner often contain aggressive advertising or subscriptions. Avoid them if you don't want to pay for basic functionality.

Safety when scanning QR codes: how to avoid becoming a victim of scammers

QR codes can be dangerous if created by criminals. According to data Kasperskyin 2026 1 of 7 phishing attacks he used fake QR codes. Main risks:

  • 🕵️‍♂️ Phishing: code redirects to a fake page for entering logins/passwords (for example, a copy of a bank website).
  • 💻 Virus downloads: automatically downloads malware (especially dangerous on Android with unknown sources).
  • 📍 Tracking: The code may contain hidden JavaScript that collects data about your location or device.
  • 💰 Subscriptions and payments: automatically sends an SMS to a short number or confirms a payment (for example, in Apple Pay or Google Pay).

How to protect yourself:

  1. Use applications with link checking (for example, Kaspersky QR Scanner or Bitdefender Mobile Security).
  2. Do not scan codes from suspicious sources (stickers on street poles, unofficial sites).
  3. Before clicking on a link, check its address - phishing sites often imitate well-known brands (for example, paypa1.ru instead paypal.com).
  4. Disable automatic connection to Wi-Fi via QR (path: Settings → Network and Internet → Wi-Fi → Advanced → Auto-connect).
Signs of a fraudulent QR code

Too blurry or a pixel image of the code.

The code is pasted on top of the official one (for example, on payment terminals).

The link leads to a site with HTTP instead of HTTPS.

The requirement to enter personal data immediately after scanning.

If you have already clicked on a suspicious one link:

  1. Immediately close the tab in the browser.
  2. Check your device for viruses using Malwarebytes or Dr.Web.
  3. If you entered bank card details, block it through the bank's mobile application.

Common errors and their solutions

Even with proper scanning, users encounter problems. Let's look at typical situations and ways to solve them:

Problem Possible cause Solution
QR code is not recognized Poor lighting, dirty lens, damaged code Clean the camera, turn on the flashlight, try a different angle
The application freezes when scanning Lack of RAM, conflict with other apps Close background applications, restart your smartphone
Nothing happens after scanning There is no Internet or an ad blocker is preventing the link from opening Check your network connection, temporarily disable the VPN/blocker
The scanner asks for a fee to decrypt the code A fraudulent application is installed Remove the application, install a verified one (for example, QR & Barcode Scanner)
The code is recognized, but the data is incorrect The code is dynamic (changed after generation) or fake Try scanning the code again or request a new one

If the problem persists, try:

  • 🔄 Update the scanner application via Google Play.
  • 📱 Reset camera settings (path: Settings → Applications → Camera → Storage → Reset).
  • 🛠️ Install an alternative application from our rating.
⚠️ Attention: On some devices (for example, Samsung Galaxy S22 c One UI 5.1) the built-in scanner may conflict with third-party applications. In this case, disable duplicate services in the camera settings.

Hidden features of the QR scanner on Android

QR codes can be used not only to open links. Here 5 non-obvious functionsthat few people know about:

  • 📶 Automatic connection to Wi-Fi: scan the code with network data (name and password) to connect without manual input. Example code for generating: 
    WIFI:T:WPA;S:my_network;P:my_password;;
  • 📞 Quick dialing number: the code may contain a command to call (for example, tel:+79991234567). After scanning, just click "Call".
  • 📍 Saving geolocation: scanning a code with coordinates (for example, geo:55.7558,37.6176) will open a location on the map in Google Maps.
  • 📎 Transferring contacts: code in the format VCARD allows you to quickly add a contact to the phone book.
  • 🔑 Two-factor authentication (2FA): some services (for example, WhatsApp Web) use QR for authorization.

To create your own QR code with similar functions, use generators:

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QR codes can be used to automate routine tasks: for example, create a code with a command smsto:12345:Helloto quickly send an SMS to a short number.

On devices with Android 12 and newer, the built-in scanner supports dynamic QR codes (for example, for paying in stores). They are updated every 30–60 secondswhich increases the security of transactions.

QR scanner for business tasks: how to use at work

QR codes are actively used in business to optimize processes. Here are a few scenarios that will be useful for entrepreneurs or freelancers:

  • 🛒 Payment for goods/services: generate codes for clients via SberBusiness, Tinkoff Cashier or Yoomoney. Example code for payment: 
    ST00012|Name=Test|PersonalAcc=40817810999999999999|BankName=TOCHKABANK|BIC=044525999|CorrAcc=3010181 0145250000999|PayeeINN=7704203909|KPP=770401001|LastName=Ivanov|FirstName=Ivan|MiddleName=Ivanovich|Purpose=Payment order No. 123|Sum=1000
  • 📊 Collecting feedback: the code leads to a form in Google Forms or Typeform. Example link: https://docs.google.com/forms/d/e/1FAIpQLS.../viewform
  • 📦 Cargo tracking: logistics companies (for example, SDEK or Boxberry) use QR to identify parcels.
  • 🎫 Electronic tickets: the code contains booking data (air tickets, concerts). Example structure: BC:RU:AC:1234567890:SMITH/JOHN:E:1A:744:25AUG:JFKLAX

To generate business QR codes we recommend:

  • 📌 QR TIGER — support for logos and scan analytics.
  • 📌 Unitag — designer QR codes with a color palette.
  • 📌 Visualead — animated codes for marketing campaigns.
⚠️ Attention: When using QR for payments, make sure that the code is generated through the bank’s official service. Fake payment codes can redirect money to scammers.

FAQ: Frequently asked questions about the QR scanner on Android

Is it possible to scan a QR code from the screen of another phone?

Yes, but for this you need the screen brightness to be at maximum and the scanning device camera to maintain focus at close distances. Some smartphones (for example Samsung Galaxy S23) have a mode Screen scanner in the application Camera.

Why does the scanner ask for permission to access contacts or location?

This is required for functions like saving contacts from a QR or determining your location when scanning geo-tags. If you don't use these features, permissions can be turned off in the app settings. However, some functions (for example, automatically adding Wi-Fi) will not work.

How to scan a QR code if the smartphone camera is broken?

There are 3 options:

  1. Use the web version of the scanner (for example, webqr.com) - upload a photo of the code via your computer.
  2. Connect an external camera via USB (support required OTG).
  3. Restore the camera in a service center (the cost of repairing the camera module for Xiaomi Redmi Note 10 is from 3,500 ₽).
Is it possible to create QR code for your Wi-Fi without third-party services?

Yes, on Android 10+ this is done through the settings:

  1. Open Settings → Network and Internet → Wi-Fi.
  2. Click on the name of your network.
  3. Select Share (or QR code).
  4. Enter your Wi-Fi password to generate the code.

The finished code can be saved as an image or printed.

Why do some QR codes open not in the browser, but in application?

It depends on the type of code:

  • Links (https://...) are opened in the browser.
  • Special commands (for example, intent://...) are redirected to applications (for example, Telegram or VK).
  • Payment codes (payment://...) open banking applications (SberBank Online, Tinkoff).

If the redirection works incorrect, check the default application settings (Settings → Applications → Default applications).