After updating my iPhone to iOS 11, I have noticed that my photos are in .HEIC file format rather than the usual .jpg format.
But, these files cannot be uploaded via the Survey123 field app.
To get around this, I have reverted my camera settings to take .jpg rather than .heic
But, it would be great if this could be fixed ASAP. As, most of my clients are on ios11
This is a known limitation of the QT framework Survey123 is built with. Once QT add support for the image format, we will add it into Survey123.
FYI here is the QT bug number: [QTBUG-63638] [iOS] Add support for HEIC image format - Qt Bug Tracker
You have implemented the recommended workaround.