Any QR code in the vicinity can be easily scanned with the camera of the mobile phone. There is no need to bother with this. When you turn on the camera of the mobile phone and hold it in front of the QR code, the code is scanned immediately. But many times it is necessary to scan the QR code in the pictures or screenshots stored in the gallery of the mobile phone. In this case, there is a lot of trouble because there is no opportunity to scan the code with the camera of the mobile phone. No worries, however, using the Google Lens app, you can easily scan the QR code of an image stored in a mobile phone gallery or an image in a screenshot.
To scan the QR code of an image stored in a gallery or an image in a screenshot, you must first turn on the internet connection on your mobile phone. Now launch the Google Lens app and select the QR code image from the gallery. After waiting for a while, the code scan in the picture will end. After opening the QR-coded image in the Gallery app, you can also scan directly by clicking on the Google Lens icon at the top.
Most mobile phones running the Android operating system have Google Lens installed. If not, the app can be downloaded from https://play.google.com/store/apps/details?id=com.google.ar.lens.