Collector for ArcGIS 17.0.4 is now available on iOS. This release addresses a few bugs introduced with 17.0.3, including BUG-000108532 (subtype codes show instead of descriptions).
The link below shows the bugs that were addressed with the latest releases of Collector. It's listed under "Get various bug fixes and improvements". The bugs are linked in the page.
Our iOS users are seeing this error when trying to connect to our portal url with data collector: "The server you are trying to connect to is using an untrusted certificate." We downloaded a certificate onto the phone, but are still experiencing this error. We have a firewall and use a vpn to access the portal url.
Our kids need GIS in their problem-solving toolboxes. I'm working to get digital maps into each K-12 classroom and the hands of each child. A long-time Esri employee, I've previously worked on Esri's mobile apps, focused on documentation and best practices. Out of the office I'm a runner often found on the trails or chasing my children.