I have an Honor5C on Android 7 (with EMUI5) and there's a QR code reader built in, but I only found it by accident.
After taking a picture of a QR code, view the image, tap 'more', wait 10s, if the image is good enough (and it really needs perfect focus and placement, it's very pinickety) then it will show "read QR code", if you choose that option it will then take you to a URL/text preview, and then you can open your browser to that URL, etc..
After taking a picture of a QR code, view the image, tap 'more', wait 10s, if the image is good enough (and it really needs perfect focus and placement, it's very pinickety) then it will show "read QR code", if you choose that option it will then take you to a URL/text preview, and then you can open your browser to that URL, etc..
Worst discoverability ever!