Use iPhone Camera first, then Code Scanner or Photos
Open Camera, select the rear camera, hold the iPhone so the complete QR code is visible, and tap the notification banner. If Camera does not recognize it, add Code Scanner to Control Center and scan there. For a QR in a screenshot or saved photo, open the image in Photos, press and hold the detected code or link, and choose the relevant action; when detection fails, upload the image to QRFlow's local browser reader. Improve lighting, clean the lens, avoid digital zoom, and keep the quiet zone in frame. Preview unfamiliar links before leaving the app.
Start with the rear Camera and tap its result banner.
Use Code Scanner or Photos for alternate input.
Use the local image reader when Photos cannot detect it.
Before this page is included in the public guide directory, its examples are compared with the payload produced by the linked QRFlow generator and with the export and scan-readiness controls available in the current build. Camera, lighting, paper, print size, and destination apps can still change the result, so important print runs should always be tested on the final material and real devices.
You normally do not need a separate QR scanner app on iPhone. Use Camera for a printed code, Code Scanner in Control Center for a focused scan, or Photos and the browser reader when the QR is already on your screen.
Diagnose a business card QR code that won't scan: test the file, then fix size, quiet zone, contrast, glare, blur, vCard density, styling, or print damage.