Is the phone successfully scanning and decoding the QR? Or are you unable to navigate to the link that's been successfully scanned and decoded? I was under the impression that you were unable to successfully scan and decode the QR on this one particular device. If you're able to successfully scan and decode the QR but unable to successfully navigate to the link, that's not a problem with your phone or with scanning the QR. That's an issue of you being unable to contact the specific link contained in the QR for whatever reason.