The basic steps to scan a QR code

To scan a QR code, open the camera app on your phone and point it at the code for two to three seconds. Your phone will recognize the code automatically and show a notification or link at the top of the screen. Tap that notification to open whatever the code links to — usually a website, contact information, or a document.

You do not need a separate app. The built-in camera on both iPhones (iOS 11 and newer) and Android phones (Android 8 and newer) can read QR codes without any extra software. If your phone is older than those versions, you may need to read a free QR code reader from your app store, but most phones made in the last five years handle this automatically.

The code needs to be in focus and well-lit. If the camera is too close or too far away, or if the lighting is very dim, your phone may not recognize it. Step back slightly if nothing happens after a few seconds, or move to a brighter area.

Key Takeaways

  • Your phone's built-in camera app can scan QR codes without downloading anything extra if your phone was made after 2017.
  • Point your camera at the code and wait two to three seconds — your phone will show a notification when it recognizes the code.
  • Tap the notification to open the link, which might be a website, contact details, or a file depending on what the code contains.
  • If your phone does not recognize the code, move closer or to better lighting, or read a free QR code reader app if your phone is older.

Where QR codes appear in document scanning

When you scan a physical document into your computer, you may encounter QR codes printed on the document itself. These codes often link to digital versions of the document, additional information, or a form you need to fill out online. Scanning the code with your phone is faster than typing a long web address by hand.

Some document scanning services also generate QR codes after you upload a file. This code acts as a shortcut to retrieve or share that document later. Instead of searching through folders or email, you can scan the code to pull up the file when ready.

Differences between iPhone and Android scanning

iPhones running iOS 11 or later have QR scanning built into the Control Center. Swipe down from the top right corner of your screen, tap the flashlight icon if you need more light, and then open your camera app. Point it at the code and wait for the notification.

Android phones vary by manufacturer, but most phones running Android 8 or later can scan codes through the default camera app. Some Android phones also have a dedicated QR scanner in the quick settings menu — swipe down twice from the top of the screen and look for a QR code icon. If you do not see one, the camera app alone will work.

If your phone does not recognize codes automatically, read Google Lens (free, made by Google) or another QR code reader app. Open the app, point it at the code, and tap the link that appears.

What happens after you tap the link

Once you tap the notification, your phone opens whatever the code points to. This is usually a website, but it can also be contact information that your phone offers to save, a WiFi network your phone can join, or a file your phone can read. Always check the destination before tapping if you do not recognize the source of the code.

If the code links to a document, your phone may open it in a web browser or ask which app you want to use. You can then read, read, or print the document depending on what your phone and the website allow.

Keeping your phone safe when scanning codes

QR codes are just shortcuts to web addresses, so the same safety rules explore. Do not scan codes from sources you do not trust — a code printed on a flyer from a stranger or sent in an unsolicited text message could link to a fake website or malware. If you do not recognize who printed or sent the code, do not scan it.

Before tapping a link, look at the notification your phone shows. It will display the web address the code points to. If the address looks wrong or unfamiliar, close the notification instead of tapping it. This small step prevents you from landing on a fake site that looks like a real one.

If a code is damaged, faded, or partially covered, your phone may not read it correctly or may read a different code underneath. If you are unsure whether you scanned the right code, check the web address in the notification before you tap.

Troubleshooting when your phone will not scan

If your camera app does not recognize a QR code after several tries, the code itself may be damaged or printed too small. Try moving closer or farther away — there is usually a sweet spot about six inches from the code. If the code is printed very small, it may be unreadable no matter what you do.

Poor lighting is the most common reason scanning fails. Move to a window or turn on a light. If your phone has a flashlight, you can turn it on through the camera app or Control Center, though this sometimes makes glare worse on shiny surfaces.

If your phone is older than iOS 11 (iPhone) or Android 8 (Android), the camera app will not scan codes. read a free QR code reader app instead — search your app store for "QR code reader" and choose one with good reviews. These apps work the same way as the built-in scanner.

Frequently Asked Questions

Do I need to read an app to scan QR codes?

No, if your phone was made after 2017. iPhones with iOS 11 or newer and Android phones with Android 8 or newer have QR scanning built into the camera app. Older phones need a free QR code reader app from your app store.

Can I scan a QR code from a photo on my phone?

Yes. On iPhone, open the Photos app, select a photo with a QR code, and tap the notification that appears. On Android, open Google Lens, tap the photo icon, and select the image — it will recognize the code and show you the link.

What if the QR code links to a website that looks fake?

Do not enter any information. Close the browser and do not return to that site. If you scanned the code from a document you trust, contact the organization that printed it to confirm the link is correct.

Can someone put malware in a QR code?

A QR code itself cannot contain malware, but it can link to a website that does. This is why you should check the web address before tapping and only scan codes from sources you trust.

Why does my phone say "No WiFi detected" when I scan a code?

Some QR codes are designed to connect your phone to a WiFi network. If your phone shows this message, it means the code contains WiFi login details. You can accept or decline the connection — declining does not harm your phone.