QR codes are like small data cubes. To unlock this data, you need a QR reader. These are annoying because you usually need to download a third-party app and some of these apps are shady. Fortunately, your Samsung Galaxy with One UI includes a hidden QR scanner.
Scanning QR Codes with Your Galaxy
Open the standard camera app on your Samsung One UI device. Find a QR code you want to scan and point the camera at the QR code. A pop-up is displayed – just tap to create a shortcut or go to a URL. You now have the most conveniently placed QR code reader on your device.
You can rotate This feature can be turned on or off in Camera Settings , If the QR Reader is not working and your device is running Android 9.0 or higher (One UI), make sure the setting is turned on by swiping right in your camera app and switching to settings. Above, you can use the Scan QR Codes button to enable scanning.