ArcGIS collector 10.3 for iOS does not honor AGOL attribute order, nor the field order that has been set from the arcmap for the layer that is published.
I haven't found this to be the case. Can you post an example?
What do you mean to post an example ? How can i post it if there are 5 systems involved in the data-flow.
Here is some more info.
1-) Added a new filed to an existing Geodatabase feature class.
2-) Promoted that field order on the MXD (via arcmap) and republished to ArcGIS server.
3-) AGOL was not showing the correct order.
4-) Promoted again that field through Popup Attributes Order.
5-) Downloaded to the collector. (The field was showing in the END)