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.
QRFlow guides are written against the current generator behavior, payload formatting rules, export paths, and print or scan checks in the product. They are meant to help users finish a QR workflow, not to exist as standalone SEO filler.
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.
When QR scans but the destination fails inside in-app browsers. Fix redirect chains, http/https issues, blocked links, and build a stable landing flow.
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.