How to Scan a QR Code on an iPhone, an Android Phone or a Laptop

Published 19 October 2026 by the QRCodeBarn team.

Most people never need a special app to scan a QR code. The camera that is already on your phone can almost certainly do it, and there are built-in ways to read a code from a screenshot or on a computer too. This guide walks through each method, explains what to do when nothing happens, and shows how to check where a code goes before you tap it.

The quick answer

Open your phone's camera, point it at the code so the whole square fits on the screen, and hold still for a second. A link or a small banner appears. Tap it to open the website, join the WiFi network or save the contact. You don't need to take a photo.

If that doesn't work, the sections below cover the other built-in options for your device.

Scanning a QR code on an iPhone or iPad

Apple added QR code reading to the standard Camera app in iOS 11, released in 2017, so any iPhone that has had a software update in the last few years can scan codes without an extra app.

1. Open the Camera app and use the normal photo mode with the rear camera.
2. Point it at the QR code. You don't need to line it up perfectly, as the phone finds the code at almost any angle.
3. When the code is recognised, a yellow link button or a notification appears near the code. It shows the web address or a short description, such as "Join network".
4. Tap it to open the link.

If nothing appears, check that QR scanning is switched on. In the Settings app, open Camera and make sure Scan QR Codes is turned on.

iPhones also have a dedicated Code Scanner, which you can add to Control Centre. It is handy in dim places because it has its own torch button, and it opens links in a small window instead of switching straight to your browser.

Scanning a code in a photo or screenshot on iPhone

Sometimes the code is already on your phone, for example in a screenshot of a ticket or an image someone sent you. On recent versions of iOS, open the image in Photos, then press and hold on the code. If the phone recognises it, a menu appears with the option to open the link. The Live Text button in the corner of the photo may also highlight the code.

Scanning a QR code on an Android phone

Android phones are made by many different companies, so the exact steps vary, but almost every recent phone has at least one of these built-in options.

Use the camera app

On most recent Android phones, including Samsung Galaxy and Google Pixel models, the standard camera app reads QR codes. Point the camera at the code and wait for a link or a pop-up to appear, then tap it. On Samsung phones, if nothing happens, open the camera settings and check that the option to scan QR codes is switched on.

Use the Quick Settings tile

Many phones running Android 13 or later have a Scan QR code tile in Quick Settings, the panel you get by swiping down from the top of the screen. Tap it, point the camera at the code and the link opens. If you can't see the tile, tap the edit (pencil) icon in Quick Settings to see whether it can be added.

Use Google Lens

Google Lens works on almost any Android phone with Google services. You can open it from the camera icon in the Google search bar, from the Google app, or from the Lens option in many camera apps. Point it at the code and tap the link it finds.

Lens is also the easiest way to read a code from a screenshot on Android. Open the image in Google Photos, tap the Lens button, and any QR code in the picture is read.

Scanning a QR code on a laptop or desktop computer

Most QR codes are designed for phones, but there are times you need to read one on a computer, such as a code in an email or on a web page.

• A code on a web page in Chrome. Right-click the image and choose the option to search the image with Google. Google Lens opens in a side panel and reads the code.
• A printed code on Windows. Recent versions of the Windows Camera app include a barcode or QR code scanning mode. Hold the code up to the webcam. On some versions you may need to switch the mode on in the app's settings first.
• A code in a file or screenshot. If your computer has no built-in option, the simplest route is often to open the image on screen and scan it with your phone.

When the code won't scan

If your camera doesn't react, try these fixes in order. Most problems are solved by the first three.

• Move back a little. The whole code, including its white border, needs to fit inside the frame. Holding the phone too close is the most common mistake, especially with small codes on business cards.
• Improve the light. Dim light, deep shadows and strong glare on laminated menus or glass all make codes harder to read. Tilt the phone slightly to move a reflection off the code, or turn on the torch.
• Clean the lens. A fingerprint smudge on the camera lens blurs the fine pattern. Wipe it with a soft cloth.
• Hold still for a second or two. The camera needs a moment to focus. Moving the phone around restarts the process.
• Try another method. If the camera app fails, try Code Scanner on an iPhone or Google Lens on Android. They sometimes cope better with damaged or low-contrast codes.
• Check the code itself. Some codes are simply hard to read because they were printed too small, in pale colours, or with text running into the margin. That is the fault of the code, not your phone.

If you created the code yourself and it doesn't scan for other people, our guide to why a QR code is not scanning goes through the common printing and design problems.

Check before you tap

A QR code is just a way of carrying text, usually a web address, so a scan is only as trustworthy as the code. Criminals sometimes stick their own codes over genuine ones on car park meters, posters and parcels, hoping you will pay or enter details on a fake site.

Both iPhone and Android show you the address before opening it. Take a second to read it.

• Check the domain name is the one you expect, such as your council's or the car park operator's real website, not a near-miss spelling.
• Be wary of a code stuck on top of another code or on a label that looks out of place.
• Don't enter card details or passwords on a page you reached from a code you aren't sure about. Go to the company's website or app directly instead.

Our article on whether QR codes are safe covers QR code scams in more detail.

Do you need a QR scanner app?

For most people, no. The built-in camera, Code Scanner or Google Lens covers almost everything. Many free scanner apps in the app stores are packed with adverts, ask for permissions they don't need, or open links in their own browser so they can track what you visit. If your phone is too old to scan codes with its camera, it is probably also too old to receive security updates, which is a bigger risk than missing a QR code.

The exception is work use. Warehouses, event check-in desks and ticket scanners often use a dedicated app or a hand-held scanner because they need to read hundreds of codes quickly and log each one.

Frequently asked questions

Can I scan a QR code without an app?

Yes. iPhones running iOS 11 or later scan codes with the standard Camera app, and most recent Android phones can scan with their camera app, a Quick Settings tile or Google Lens.

How do I scan a QR code that is on my own screen?

Take a screenshot, then open it in Photos on an iPhone and press and hold on the code, or open it in Google Photos on Android and tap Lens.

Why does my iPhone camera not scan QR codes?

QR scanning may be switched off. Open Settings, then Camera, and check that Scan QR Codes is turned on. Also make sure the whole code fits in the frame and is well lit.

Is it safe to scan any QR code?

Scanning on its own just reads the text inside the code. The risk comes from the page you open. Check the web address your phone shows before tapping, and avoid entering personal or payment details on a site you reached from an unexpected code.

Can a laptop scan a QR code?

Yes, in some cases. Recent versions of the Windows Camera app can read codes held up to the webcam, and Google Lens in Chrome can read a code shown in an image on a web page.

Want to make your own code? Use the free QR code generator, and read how to test a QR code before you print it. For what happens inside the phone during a scan, see how QR codes work.

This article was drafted with AI assistance and reviewed for accuracy. Read our editorial policy and AI content policy.