How To Build A Qr Scanner App For MacHow To Build A Qr Code For A Facebook PageHow To Build A Qr CodeHowever, if you just need to scan a QR code, here’s how to do it with your iPhone without needing to download a third-party app. Start by opening up the Camera app and make sure that it’s set to “Photo” or “Square”. Read reviews, compare customer ratings, see screenshots, and learn more about QR..